Dunestar filters

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test, including Dunestar filters on both rigs and stubs on all the main feed lines. Including feeds to the VHF and WARC band antennas, we used a total of 1200 feet of coax. The tribander and 15-meter quad were fitted with 22-foot open and shorted stubs, respectively, allowing the tribander to be used on 10 and 20. Add To Cart. Some bandpass filters require an external source of power and employ active components such as transistors and integrated circuits; these are known as . € 232,00. 868MHz 50 Ohms Bandpass Filter Sound Meter Package Bandwidth 867-869MHz NEW. 3.0 out of 5 stars. 50% 72 . ... (SO2R) can benefit from good filters by reducing the. Jan 30, 2021 · Step 2: Define audio cables for each radio in the VAC Control program. Step 3: Start two intances of ExpertSDR2 and make sure that each radio is connected with separate IP adresses i.e. 192.168.0.195 port 50001 and 192.168.0.197 port 50003.. "/>. aria-label="Show more">. ICE filter sets utilize 1kV-rated capacitors for the lower frequency band filters, but only 500V caps for the higher frequency filters. Capacitors in the Dunestar filters whose ratings I could identify are 1kV-rated, and all but a few have NPO temperature stability ratings. Except for the 160M filters, all are ceramics. Single bandpass filters for 10, 15, 20, 40, and 80 meters. Very lightly used and in good condition. $200 plus shipping for all 5. An Inquiry into your eHam classifieds post : 5 single band Dunestar bandpass filters. 5 single band Dunestar bandpass filters. Send this to a friend with an introduction. Required!. ewfxnw
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Auto band-switched Dunestar 600 filters, using Top Ten band decoders, keep the inter-station interference to a minimum. W2IHY two band equalizers, with noise gates, keep the fan noise down between words. Yaesu u-tune filters allow greater selectivity on some bands during contests and crowded band conditions. It’s interesting to see that compared to the very popular Dunestar filters, the 5B4AGN TXBPF are superior in performance overall and at a much cheaper cost. I seem to remember these worked out at about £40 each to build. Of note is the exceptionally good insertion loss figures on these filters, varying from 0.19dB to just 0.31dB which.

I own two Dunestar 600 all-band filters and individual Dunestar 300 band filters for 10, 15, 20, 40 and 80 meters. I also use a Dunestar 2-radio headphone selector. Ron promptly answered my email and told me everything I needed to know about his triplexer, and as an added bonus, he offered to send me one to test.. To prevent from hf interferences between the stations I use Dunestar bandpass filters (2 x model 600). One of the next projects will be a few BCD-decimal decoder to automate the antenna and filter selection. This is currently done by hand. ... He took part from here with my FT1000D (80m) and his own FT1000MP (40m) as SO2R . He finished second.. We have a Dunestar 600 filter at each of the two operating positions. The filters offer excellent band-to-band rejection, low insertion loss and provide for efficient multi-transmitter operation. I recently had Ron (N7EA, owner of Dunestar) rework both filters. He did an excellent job and turnaround was fairly quick.

I own two Dunestar 600 all-band filters and individual Dunestar 300 band filters for 10, 15, 20, 40 and 80 meters. I also use a Dunestar 2-radio headphone selector. Ron promptly answered my email and told me everything I needed to. But the cost of the Dunestar 600 filters is slightly greater. Many contest operators are successfully using the ICE 419 filters so their performance is probably satisfactory for SO2R and MultiOp stations -- at least in some situations. As the saying goes, "Your mileage may vary". Figure #1 Internal view of ICE 419B The 160 meter filter.

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The designs herein are from W3NQN’s second-generationi bandpass filters utilizing the Cauer family of filters. The following pages are in frequency progression, beginning with 160m and working up through 10m. ... VE3YF Rating: 2010-12-17; Very Effective Time Owned: more than 12 months. I currently use a pair of Dunestar 600 Filters in my SO2R. 2 Dunestar Band filters: Ad Message: 2 Dunestar Band filters, one each 15 meter filter asking $70.00 shipped free to the lower 48 states 12 meter filter asking $60.00 shipped free to the lower 48 states Cost new for these filters is $99.95 each plus tax and shipping. PayPal payment can be sent to: bob at 2cls.com :. The Dunestar BPFs claim 40 dB adjacent band rejection which is to expected from a 3 pole design. The 5 pole 4O3A designs yield significant additional filtering. ... Series XL filters and other 4O3A Advanced Contest Solutions are helping achieve big scores at some of the world's greatest contest stations including 4O3A, OH8X, PY5EG, S51A and. 1 - 500 - 700M Hz Band Pass Filter 1 - 600 - 800M Hz Band Pass Filter 1 - Protective Weatherproof Hard Case Amphenol Broadband Solutions has the tools technicians will need to measure the high MER signals at the node output from DOCSIS 3.1 forward path signals. Our filter kit is essential for being able to correctly estimate. The DuneStar 504 is a relay-selected bandpass filter array that allows operating two stations on different bands simultaneously--without blowing up your receiver front-ends. This model consists of five bandpass filters, one each for 160m, 80m, 40m, 20m, and 15m.

DuneStar Model 600 Bandpass Filter Characteristics Bob Wolbert, K6XX The DuneStar 600 is a relay-selected bandpass filter array that allows operating two stations on different bands simultaneously-without blowing up your receiver front-ends. This model consists of six bandpass filters, one each for 160m, 80m, 40m, 20m, 15m, and 10m. Of course some of the biggest reflector battles have been over that statement. Compared in the graphs below are the Array Filtermax, the 5B4AGN and the Dunestar 600 6-band auto-switching filter sets, as well as some 5B4AGN single-band filters I had on the bench at the time from Field Day. The Filtermax performance owes two debts to it's nice. Band Pass Filter Fever - Guess-timating the Filter Efficacy - Part 5; Band Pass Filter Fever - The Guess-timated Scale and Actual Guess-timated Measurements - Part 6; NEW, 20190921 Retroactive Filter Tuning with NanoVNA; Photos of the filters as constructed by W4KAZ, based on NVARC and K4VX designs -. The K4D adds a second A-to-D converter and a second set of.

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And I manually switch the filter when changing bands using a Dunestar 800BPF manual band switch. A less expensive way of filtering is by the use of stubs. Bandpass filters built for low power (100-200 watts) are designed to go at the output of the radio whereas stubs (and high power filters) can be placed at the output of an external amplifier. Bandpass Filters vs Stubs The most expensive components in the whole system are the two Dunestar 600 bandswitching bandpass filters; I flinched for a long time before deciding that I simply wasn't sure enough of my ability to properly cut and tune stubs. I chose the Dunestars over ICE's similar units, despite their higher price, because their.

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Jan 30, 2021 · Step 2: Define audio cables for each radio in the VAC Control program. Step 3: Start two intances of ExpertSDR2 and make sure that each radio is connected with separate IP adresses i.e. 192.168.0.195 port 50001 and 192.168.0.197 port 50003.. "/>. Dunestar Bandpass Filters are 3-pole, capacitive coupled, with High-Q capacitors and inductors used for tuned circuits. Filters are conctructed on glass-epoxy PCB in Aluminum Enclosure. Inputs and outputs are at DC ground potentials. Dimensions: 51 x 152 x 44 mm (including mounting flange. Ihe insertion loss is typical 0.5 - 0.7 dB, with band.

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The Hobkin are an anthropomorphic race living within the magical forest crater called the grove. Possessing a druidic predisposition, these creatures use their abilities to guide the growth of plants and trees to build their homes and clothing.Rising majestically above the clouds, in the center of the grove, there grows a colossal tree; commonly believed to be the source of all. An RF filter is an electrical circuit configuration (network) designed to have specific characteristics with respect to the transmission or attenuation of various frequencies that may be applied to it. There are three general types of RF filters: A high-pass filter similarly has a cut-off frequency, above which there is little or no loss in. . Review Summary For : Dunestar Systems Model 300 Single Band Bandpass Filters; Reviews: 3 MSRP: 73.00; Description: The filters are 3-pole, top-C coupled. Hi-Q capacitors and inductors are used for tuned circuits. Filters are constructed on glass-epoxy PC boards. Inputs and outputs are at DC ground potentials. Aluminum Enclosure. Band Pass Filter Series XL. Product Code BPFXL. 399.00€. Choose options. These high-power (4,500 W ICAS) Band Pass Filters are to be fitted on the output side of your linear amplifier, filtering out not only harmonics but also.

2 Dunestar Band filters: Ad Message: 2 Dunestar Band filters, one each 15 meter filter asking $70.00 shipped free to the lower 48 states 12 meter filter asking $60.00 shipped free to the lower 48 states Cost new for these filters is $99.95 each plus tax and shipping. PayPal payment can be sent to: bob at 2cls.com :. Dunestar Bandpass Filters are 3-pole, capacitive coupled, with High-Q capacitors and inductors used for tuned circuits. Filters are conctructed on glass-epoxy PCB in Aluminum Enclosure. Inputs and outputs are at DC ground potentials. Dimensions: 51 x 152 x 44 mm (including mounting flange. Ihe insertion loss is typical 0.5 - 0.7 dB, with band. It’s interesting to see that compared to the very popular Dunestar filters, the 5B4AGN TXBPF are superior in performance overall and at a much cheaper cost. I seem to remember these worked out at about £40 each to build. Of note is the exceptionally good insertion loss figures on these filters, varying from 0.19dB to just 0.31dB which. New Advertiser - Dunestar Systems. Jan 11, 2022 | 1. Dunestar Systems manufactures RF Bandpass Filters, HF Highpass Filters, HF Triplexers, Portable Antennas and Switching Devices for amateur radio and commercial users. They are the originators of HF multiband switchable bandpass filters. Don't take our word for it, check them out:. Dunestar Systems - Manufacturer of single band and multiband transceiver bandpass filters for HF. High pass filters, two radoi headphones mix and switch, 6 meter portable antenna, antenna remote switching and steering. Duplexers.eu - We produce duplex filters for 6 m, 2 m, 70 cm, and 23 cm band but also for HF bands.

One of the items we need to stock up on is band pass filters. I'm interested in finding something like the Dunestar mult-band filter setups. However, due to the death of the founder of Dunestar, they are not producing anything right now. I found offerings at DX Engineering:. Homebrew automatic SO2R controller (two homebrew band decoders drive a two-of-ten homebrew SO2R antenna switch and two Dunestar model 600 bandpass filters) 2nd tower rotator box (Ham M) Yaesu FT-1000 (main station) Main tower rotators (upper for top KT-34XA and 2el 40, lower for lower KT-34XA and 6M).

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We have a Dunestar 600 filter at each of the two operating positions. The filters offer excellent band-to-band rejection, low insertion loss and provide for efficient multi-transmitter operation. I recently had Ron (N7EA, owner of Dunestar) rework both filters. He did an excellent job and turnaround was fairly quick. I recommend these filters. Audio Systems Group, Inc. Home Page. • Bandpass filters: LBS | Low Band Systems (10-160 Mtr) • Bandpass filters: Dunestar. The Dunestar BPFs claim 40 dB adjacent band rejection which is to expected from a 3 pole design. The 5 pole 4O3A designs yield significant additional filtering. ... Series XL filters and other 4O3A Advanced Contest Solutions are helping achieve big scores at some of the world's greatest contest stations including 4O3A, OH8X, PY5EG, S51A and.

Dunestar Bandpass Filters are 3-pole, capacitive coupled, with High-Q capacitors and inductors used for tuned circuits. Filters are conctructed on glass-epoxy PCB in Aluminum Enclosure. Inputs and outputs are at DC ground. JAVA SMITH CHART... Some years ago a company in the radio frequency field had a fine Smith Chart software program that ran in Windows 95 and 98.

We have a Dunestar 600 filter at each of the two operating positions. The filters offer excellent band-to-band rejection, low insertion loss and provide for efficient multi-transmitter operation. I recently had Ron (N7EA, owner of Dunestar) rework both filters. He did an excellent job and turnaround was fairly quick. I recommend these filters. New Advertiser - Dunestar Systems. Jan 11, 2022 | 1. Dunestar Systems manufactures RF Bandpass Filters, HF Highpass Filters, HF Triplexers, Portable Antennas and Switching Devices for amateur radio and commercial users. They are the originators of HF multiband switchable bandpass filters. Don't take our word for it, check them out:. Array Solutions FM-6 Filter Master Filter Switch. Dunestar Bandpass Filter FAQ. Dunestar Model 600 Multi-Band Remote Switched Bandpass Filters. Dunestar Model 300 Single-Band Bandpass Filters. I.C.E Bandpass Filters Datasheet (PDF) I.C.E. 419B Combination 200W Bandpass Filter. I.C.E. Individual Band 200W Bandpass Filters. One of the items we need to stock up on is band pass filters. I'm interested in finding something like the Dunestar mult-band filter setups. However, due to the death of the founder of Dunestar, they are not producing anything right now. I found offerings at DX Engineering:. But the cost of the Dunestar 600 filters is slightly greater. Many contest operators are successfully using the ICE 419 filters so their performance is probably satisfactory for SO2R and MultiOp stations -- at least in some situations. As the saying goes, "Your mileage may vary". Figure #1 Internal view of ICE 419B The 160 meter filter. Station "C" consisted of an Icom IC-751A with a 250 hz filter in the IF. I used the right channel of the sound card in the station "B" computer to decode the RTTY. I used an extra COM port on the same computer to key PTT and FSK. This station was dedicated to 10 meters only and used a Dunestar 10M filter.

Dunestar 14 MHZ (20M) band pass filter. More infos here.

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Buy it now - DUNESTAR BAND PASS FILTER for 20M (14 MHZ) Add to Watch list. More to explore: RF Pass Filters & Microwave Pass Filters, Test Equipment Multimeters Low Pass Filter, 20m HDMI Cable, Pass & Seymour Electrical Plugs, 1 MHz Oscilloscopes &. Band Pass Filter Fever - Guess-timating the Filter Efficacy - Part 5; Band Pass Filter Fever - The Guess-timated Scale and Actual Guess-timated Measurements - Part 6; NEW, 20190921 Retroactive Filter Tuning with NanoVNA; Photos of the filters as constructed by W4KAZ, based on NVARC and K4VX designs -. The K4D adds a second A-to-D converter and a second set of. Elecraft K3 (2) filters: 2.7kHz, 2.1kHz (8 pole) 1kHz (8 pole), 400Hz (8 pole), identical sub rx Kenwood TM-261 (2 Meters) Amplifiers: Elecraft KPA 1500 (2) ... DuneStar Band Pass Filter (4) Array Solutions 2KW 20M and 40M Low Pass Filters 4O3A 2KW 10M, 15M, 20M, 40M and 80M Low Pass Filters. A Honda generator was on hand for charging and powering the laptops used in logging and PSK operations. A pair of Dunestar filters were used for out of band rejection considering our antennas were only a couple of feet apart. The filters worked flawlessly and neither station experienced interference. tabindex="0" title=Explore this page aria-label="Show more">.

I have a pair of Dunestar 600's. Have you asked Ron for the component values ? Alternatively, open up your Dunestar and record the capacitor values. They aren't painted over, or any other camouflage to keep their value a secret. 73, Steve, N2IC On 06/26/2013 10:54 AM, Alan Dewey wrote: Has anyone had experience repairing Dunestar 600 filters?. is a switch that disables the DuneStar power when SWLing; even megapower broadcasters are hard to copy when the fil-ters chop them out! Operation This is the best part. Once the interface is built and con-nected, no user intervention is required. Change the frequency of the FT-1000MP and the DuneStar bandpass filter bank switches automatically. See Dunestar web site for details. I used these filters in SO2R setup, but eventually decided to give it up. Both filters work fine; the exterior has few light scratches, but no dents, dings, or other signs of rough use.

Subject: : Dunestar summary: From: : [email protected] ([email protected]): Date: : Tue Aug 2 11:07:00 1994. 2 Dunestar Band filters: Ad Message: 2 Dunestar Band filters, one each 15 meter filter asking $70.00 shipped free to the lower 48 states 12 meter filter asking $60.00 shipped free to the lower 48 states Cost new for these filters is $99.95 each plus tax and shipping. PayPal payment can be sent to: bob at 2cls.com :.

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. Where did you find it from Dunestar? > I have six mono band filters from I.C.E. They work pretty good but to > change them manually is time consuming "operation", and I decided to > buy Model 419B - Combination Bandpass Filter. > I spoke to I.C.E. and Array Sol.

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W3NQN Band Pass filters are the best single band filters you can buy. Each one is hand-made by K7MI to W3NQN's specifications. The performance of these W3NQN design filters , regardless of who assembles them is the same. ... To make the filters more flexible for an SO2R type of operation it is necessary for the operator to be able to listen on. But the cost of the Dunestar 600 filters is slightly greater. Many contest operators are successfully using the ICE 419 filters so their performance is probably satisfactory for SO2R and MultiOp stations -- at least in some situations. As the saying goes, "Your mileage may vary". Figure #1 Internal view of ICE 419B The 160 meter filter.

Dunestar Bandpass Filters are 3-pole, capacitive coupled, with High-Q capacitors and inductors used for tuned circuits. Filters are conctructed on glass-epoxy PCB in Aluminum Enclosure. Inputs and outputs are at DC ground potentials. Dimensions: 51 x 152 x 44 mm (including mounting flange. Ihe insertion loss is typical 0.5 - 0.7 dB, with band. DCI - Digital Communications Inc. - Bandpass filters; Denver Amateur Radio Supply; Digi-Key Corporation - Electronics supplier; Down East Microwave Inc. - VHF/UHF/SHF Equipment and Parts. Dunestar Systems - RF filters, antenna switching and coupling phasing devices. Durham Radio Sales and Service; DX System Radio High performances beams. is a switch that disables the DuneStar power when SWLing; even megapower broadcasters are hard to copy when the fil-ters chop them out! Operation This is the best part. Once the interface is built and con-nected, no user intervention is required. Change the frequency of the FT-1000MP and the DuneStar bandpass filter bank switches automatically. Filters—Band-Pass, TVI (Low Pass & High Pass) 4O3A.COM Bencher K-Y FIlter Radioware Dunestar Baluns and Impedance Transformers Balun Designs ... Dunestar Systems P.O. Box 37 St. Helens, OR 97051 U.S.A 800-457-1690: Orders Only 503-397-2918: All Other Inquiries 503-397-2918: fax [email protected] www.dunestar.com. Buy it now - DUNESTAR BAND PASS FILTER for 20M (14 MHZ) Add to Watch list. More to explore: RF Pass Filters & Microwave Pass Filters, Test Equipment Multimeters Low Pass Filter, 20m HDMI Cable, Pass & Seymour Electrical Plugs, 1 MHz Oscilloscopes &. DuneStar Model 600 Bandpass Filter Characteristics Bob Wolbert, K6XX The DuneStar 600 is a relay-selected bandpass filter array that allows operating two stations on different bands simultaneously-without blowing up your receiver front-ends. This model consists of six bandpass filters, one each for 160m, 80m, 40m, 20m, 15m, and 10m.

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The Hobkin are an anthropomorphic race living within the magical forest crater called the grove. Possessing a druidic predisposition, these creatures use their abilities to guide the growth of plants and trees to build their homes and clothing.Rising majestically above the clouds, in the center of the grove, there grows a colossal tree; commonly believed to be the source of all. DuneStar Model 600 Bandpass Filter Characteristics Bob Wolbert, K6XX The DuneStar 600 is a relay-selected bandpass filter array that allows operating two stations on different bands simultaneously-without blowing up your receiver front-ends. This model consists of six bandpass filters, one each for 160m, 80m, 40m, 20m, 15m, and 10m. A Honda generator was on hand for charging and powering the laptops used in logging and PSK operations. A pair of Dunestar filters were used for out of band rejection considering our antennas were only a couple of feet apart. The filters worked flawlessly and neither station experienced interference. Elecraft K3 (2) filters: 2.7kHz, 2.1kHz (8 pole) 1kHz (8 pole), 400Hz (8 pole), identical sub rx Kenwood TM-261 (2 Meters) Amplifiers: Elecraft KPA 1500 (2) ... DuneStar Band Pass Filter (4) Array Solutions 2KW 20M and 40M Low Pass Filters 4O3A 2KW 10M, 15M, 20M, 40M and 80M Low Pass Filters. Jan 30, 2021 · Step 2: Define audio cables for each radio in the VAC Control program. Step 3: Start two intances of ExpertSDR2 and make sure that each radio is connected with separate IP adresses i.e. 192.168.0.195 port 50001 and 192.168.0.197 port 50003.. "/>. Clean Up Your Signals with Band-Pass Filters - Part 1 QST May 1998, pp. 44-48 Clean Up Your Signals with Band-Pass Filters - Part 2 QST June 1998, pp. 39-42 A Diode-Switched Band-Pass Filter QST January 1991, pp. 24-26 How to use.

Homebrew automatic SO2R controller (two homebrew band decoders drive a two-of-ten homebrew SO2R antenna switch and two Dunestar model 600 bandpass filters) 2nd tower rotator box (Ham M) Yaesu FT-1000 (main station) Main tower rotators (upper for top KT-34XA and 2el 40, lower for lower KT-34XA and 6M). Clean Up Your Signals with Band-Pass Filters - Part 1 QST May 1998, pp. 44-48 Clean Up Your Signals with Band-Pass Filters - Part 2 QST June 1998, pp. 39-42 A Diode-Switched Band-Pass Filter QST January 1991, pp. 24-26 How to use. Buy it now - DUNESTAR BAND PASS FILTER for 20M (14 MHZ) Add to Watch list. More to explore: RF Pass Filters & Microwave Pass Filters, Test Equipment Multimeters Low Pass Filter, 20m HDMI Cable, Pass & Seymour Electrical Plugs, 1 MHz Oscilloscopes &. aria-label="Show more">.

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. title=Explore this page aria-label="Show more">. Andy, Take a look at Dunestar 300 series http://www.dunestar.com/model300.htm or W3NQN filters at http://www.arraysolutions.com/Products/wx0bbpf6.htm#200W or ICE. 1 - 500 - 700M Hz Band Pass Filter 1 - 600 - 800M Hz Band Pass Filter 1 - Protective Weatherproof Hard Case Amphenol Broadband Solutions has the tools technicians will need to measure the high MER signals at the node output from DOCSIS 3.1 forward path signals. Our filter kit is essential for being able to correctly estimate. Purchased bandpass filters for 160, 80, & 60 meters from Hamation to go along with the Dunestar filters I already had for the other bands. 28Jul22 - ZL7/K5WE Chatham Island Press Release #2 - Preparations are proceeding on schedule for a September 9 on-the-air date. I'm pleased to announce my son Scott - KD5GEY will be joining me as an. Dunestar bandpass filters allow simultaneous operation of the two stations on different bands without mutual interference. Antennas are on two towers - yagis for 40-10m and dipoles, together with a Titanex. A very short High Power 5th Chebyshev type Bandpass filter. Dunestar Systems, Saint Helens, OR. 271 likes. Dunestar Systems manufactures RF Bandpass & HF Highpass Filters, HF Triplexers, Portable Antennas and.

The Hobkin are an anthropomorphic race living within the magical forest crater called the grove. Possessing a druidic predisposition, these creatures use their abilities to guide the growth of plants and trees to build their homes and clothing.Rising majestically above the clouds, in the center of the grove, there grows a colossal tree; commonly believed to be the source of all. I've installed JT65-HF 1.0.9.3 and JT-Alert 2.0.9 on a second PC connected to a second radio. It's actually my SO2R RTTY contest setup complete with Dunestar filters, antenna switching, 2-radio headphone switch, etc and networked to the main shack PC. I can now run SO2R JT-65 on separate PCs. Andy, Take a look at Dunestar 300 series http://www.dunestar.com/model300.htm or W3NQN filters at http://www.arraysolutions.com/Products/wx0bbpf6.htm#200W or ICE.

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Array Solutions FM-6 Filter Master Filter Switch. Dunestar Bandpass Filter FAQ. Dunestar Model 600 Multi-Band Remote Switched Bandpass Filters. Dunestar Model 300 Single-Band Bandpass Filters. I.C.E Bandpass Filters Datasheet (PDF) I.C.E. 419B Combination 200W Bandpass Filter. I.C.E. Individual Band 200W Bandpass Filters. For radios this year we had the previously mentioned 480SAT, a FT-100MV Field, and two ICOM 706s. We were able to use Dunestar bandpass filters for two stations and an ICE 419B bandpass filter for the GOTA. We still need to improve filtering next year by having a stub filter for the 6m station to aid in keeping down interference. Dunestar Bandpass Filters are 3-pole, capacitive coupled, with High-Q capacitors and inductors used for tuned circuits. Filters are conctructed on glass-epoxy PCB in Aluminum Enclosure. Inputs and outputs are at DC ground potentials. Dimensions: 51 x 152 x 44 mm (including mounting flange. Ihe insertion loss is typical 0.5 - 0.7 dB, with band. We have a Dunestar 600 filter at each of the two operating positions. The filters offer excellent band-to-band rejection, low insertion loss and provide for efficient multi-transmitter operation. I recently had Ron (N7EA, owner of Dunestar) rework both filters. He did an excellent job and turnaround was fairly quick. I recommend these filters.

One option is to buy external bandpass filters--they are sold by Top Ten Devices and Dunestar for multi-transmitter contest stations. Below are published articles on building tight bandpass filters. Articles. Sep 1998 QEX . 57 . A Narrow 80 Meter Band-Pass Filter (RF) Lau, Zack, W1VT . Nov 1998 QEX . 58 . A Narrow-Bandwidth 40 Meter Band-pass.

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Add To Cart. Some bandpass filters require an external source of power and employ active components such as transistors and integrated circuits; these are known as . € 232,00. 868MHz 50 Ohms Bandpass Filter Sound Meter Package Bandwidth 867-869MHz NEW. 3.0 out of 5 stars. 50% 72 . ... (SO2R) can benefit from good filters by reducing the. Dunestar Model 600 (160-10 meter) multiband band pass filters - $50 each (4 available) Full Power Triplexer filter. Works on 20/15/10 meters (50dB cross band rejection) - $200; Yaesu FTV-1000 6 meter transverter - $50 ; Note: There are separate feed lines for each antenna that go into the shack. If you decide not the use the 3×11 switch. Station "C" consisted of an Icom IC-751A with a 250 hz filter in the IF. I used the right channel of the sound card in the station "B" computer to decode the RTTY. I used an extra COM port on the same computer to key PTT and FSK. This station was dedicated to 10 meters only and used a Dunestar 10M filter. Perhaps I should call my variants the W3NQN/K8GU filters so someone else shares the blame in this case! The connectors, magnet wire, and enclosures are all readily available. The total components cost, not including excess parts and mistakes, for one filter breaks down as follows: $6 capacitors, $15 cores, $4 mini-box, $6 connectors, $3 wire. Dunestar Bandpass Filters are 3-pole, capacitive coupled, with High-Q capacitors and inductors used for tuned circuits. Filters are conctructed on glass-epoxy PCB in Aluminum Enclosure. Inputs and outputs are at DC ground potentials. Dimensions: 51 x 152 x 44 mm (including mounting flange. 1-800-942-7873. Search for: HOME; Shop by Brand. Everpure. Everpure Chloramine Filter.

Purchased bandpass filters for 160, 80, & 60 meters from Hamation to go along with the Dunestar filters I already had for the other bands. 28Jul22 - ZL7/K5WE Chatham Island Press Release #2 - Preparations are proceeding on schedule for a September 9 on-the-air date. I'm pleased to announce my son Scott - KD5GEY will be joining me as an. . Contest Bandpass Filters Ethan Miller, K8GU 8 July 2004 Filters designed and fabricated by Ford Peterson, N0FP Commercial Filters provided by Al Dewey, K0AD. Contents ... Dunestar. 2468 10-30-25-20-15-10-5 0 80 Meters RL (dB) Frequency (MHz) N0FP Torpedo Dunestar. 468 10 12 14-80-75-70-65-60-55-50-45-40-35-30-25-20-15-10-5 0 5 40 Meters.The DuneStar 504.

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Rf Bandpass Filters will sometimes glitch and take you a long time to try different solutions. LoginAsk is here to help you access Rf Bandpass Filters quickly and handle each specific case you encounter. Furthermore, you can find the "Troubleshooting Login Issues" section which can answer your unresolved problems and equip you with a lot of. Jan 30, 2021 · Step 2: Define audio cables for each radio in the VAC Control program. Step 3: Start two intances of ExpertSDR2 and make sure that each radio is connected with separate IP adresses i.e. 192.168..195 port 50001 and 192.168..197 port 50003.. "/>. DuneStar Model 504 Bandpass Filter Characteristics By Bob Wolbert, K6XX The DuneStar 504 is a relay-selected bandpass filter array that allows operating two stations on different bands simultaneously—without blowing up your receiver front-ends. This model consists of five bandpass filters, one each for 160m, 80m, 40m, 20m, and 15m. aria-label="Show more">. DCI - Digital Communications Inc. - Bandpass filters; Denver Amateur Radio Supply; Digi-Key Corporation - Electronics supplier; Down East Microwave Inc. - VHF/UHF/SHF Equipment and Parts. Dunestar Systems - RF filters, antenna switching and coupling phasing devices. Durham Radio Sales and Service; DX System Radio High performances beams. Dunestar Systems - RF Filters, Antenna switching, etc. Heil Sound Ltd; ICE - Industrial Communications Engineers International Radio - Filters, Enhancement kits and more JPS Communications - Noise Cancellation Products LZ Engineering (makers of K1EA DVP Board) MFJ Enterprises.

With a MOSFET output, the 2.2k ohm resistor becomes 22k ohm and the 1N4001 diode is unnecessary. One final option is a switch that disables the DuneStar power when SWLing; even megapower broadcasters are hard to copy when the filters chop them out! Table 2. FT-1000MP BAND DATA Jack Pinout DIN # Name Function.

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We have a Dunestar 600 filter at each of the two operating positions. The filters offer excellent band-to-band rejection, low insertion loss and provide for efficient multi-transmitter operation. I recently had Ron (N7EA, owner of Dunestar) rework both filters. He did an excellent job and turnaround was fairly quick. I recommend these filters.

. Low Power HF 200W Triplexer; 200W HF Bandpass Filters ; I built two 5B4AGN sets of BPFs for my SO2R low power setup and found that the classic W3NQN 10M band BPF is not good.at least for me -25dB Isolation for 15M band looks like not a good number at all.. 5B4AGN BPFs are classic well-known W3NQN design 3rd order Chebyshev type BPFs.

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Dunestar - RF Bandpass Filters and Antenna Remote Switching and Coupling/Phasing Devices ElectronicsUSA.com - Pocket Mini-Keys, Mini-Paddles, Keyers, QRP accessories, ... Transmitter BP Filters 160 - 2M Riley's Accessories-- Amplifier Tuning Pulser Pro With Remote Head, Tune-It For FT1000MP Mk 5, Kenwood Relay/ALC Cable, ICOM.

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11 years ago
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To prevent from hf interferences between the stations I use Dunestar bandpass filters (2 x model 600). One of the next projects will be a few BCD-decimal decoder to automate the antenna and filter selection. This is currently done by hand. ... He took part from here with my FT1000D (80m) and his own FT1000MP (40m) as SO2R . He finished second.. ICE filter sets utilize 1kV-rated capacitors for the lower frequency band filters, but only 500V caps for the higher frequency filters. Capacitors in the Dunestar filters whose ratings I could identify are 1kV-rated, and all but a few have NPO temperature stability ratings. Except for the 160M filters, all are ceramics. Auto band-switched Dunestar 600 filters, using Top Ten band decoders, keep the inter-station interference to a minimum. W2IHY two band equalizers, with noise gates, keep the fan noise down between words. Yaesu u-tune filters allow greater selectivity on some bands during contests and crowded band conditions.

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11 years ago
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Audio Systems Group, Inc. Home Page. 200 W CW / 400 W SSB Band Pass Filter for 160 m Insertion Loss (S21) and Return Loss (S11) plots T.. $151.00 . Add to Cart. W3NQN Design mono band Cauer Elliptical filter for the 17 meters band by K7MI. 200 W CW / 400 W SSSB Band Pass Filter for 17 m Insertion Loss (S21) plot To see more about W3NQN. Dunestar Systems. January 22 ·. Happy New Year everyone! I'm happy to say we've made an improvement to our model 800 bandpass filter switch. From now on all switching units will have the DB9 connector for use with the RS232 cable that is included with the model 600 BPF. Also new is the fused 12V power cable with Anderson powerpole connectors. Roller Coasters of SeaWorld Orlando. Average Wait Times, What Time to Ride, Reviews. Austin Rdzanek Dec 02, 2021. A Guide to SeaWorld Orlando’s Roller Coasters.. Jan 18, 2017 · Kraken Virtual Reality, Central Florida’s first VR roller coaster, and a new Dolphin Nursery are coming to SeaWorld Orlando in 2017 as part of $175 million in new and upgraded attractions recently. The designs herein are from W3NQN’s second-generationi bandpass filters utilizing the Cauer family of filters. The following pages are in frequency progression, beginning with 160m and working up through 10m. ... VE3YF Rating: 2010-12-17; Very Effective Time Owned: more than 12 months. I currently use a pair of Dunestar 600 Filters in my SO2R.

Dunestar 14 MHZ (20M) band pass filter. More infos here. Dunestar Bandpass Filters are 3-pole, capacitive coupled, with High-Q capacitors and inductors used for tuned circuits. Filters are conctructed on glass-epoxy PCB in Aluminum Enclosure. Inputs and outputs are at DC ground. I just stripped out the old modem PCB and made a new front panel to hold the LEDs, rotary switch etc. It has a DB9 socket on the back to take the input from my FT1000MP, or from a PC printer port, and a pair of DB25 sockets to drive the remote relay box, and a DUNESTAR Band Pass Filter unit (at the same time).

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11 years ago
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Dunestar Systems - Manufacturer of single band and multiband transceiver bandpass filters for HF. High pass filters, two radoi headphones mix and switch, 6 meter portable antenna, antenna remote switching and steering. Duplexers.eu - We produce duplex filters for 6 m, 2 m, 70 cm, and 23 cm band but also for HF bands. Audio Systems Group, Inc. Home Page. Shop 200CC Youth 2 Seat Go Kart at Murdoch''s Ranch & Home Supply Single-Seater Gas-Powered Go-Kart Newest 2 seat 200cc gas powered go kart with fine quality and CE approved (MC-434) 1) Engine type: 200cc, single cylinder, 4-stroke, oil cooling, Automatic with reverse 2) Rating Power: 8 Go-Kart Plans Experience the joy of go-karting at a. The DuneStar 600 is a relay-selected bandpass filter array that allows operating two stations on different bands simultaneously-without blowing up your receiver front-ends. This model consists of six bandpass filters, one each for 160m,.

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11 years ago
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DCI - Digital Communications Inc. - Bandpass filters; Denver Amateur Radio Supply; Digi-Key Corporation - Electronics supplier; Down East Microwave Inc. - VHF/UHF/SHF Equipment and Parts. Dunestar Systems - RF filters, antenna switching and coupling phasing devices. Durham Radio Sales and Service; DX System Radio High performances beams. It's interesting to see that compared to the very popular Dunestar filters, the 5B4AGN TXBPF are superior in performance overall and at a much cheaper cost. I seem to remember these worked out at about £40 each to build. Of note is the exceptionally good insertion loss figures on these filters, varying from 0.19dB to just 0.31dB which.

title=Explore this page aria-label="Show more">. Single bandpass filters for 10, 15, 20, 40, and 80 meters. Very lightly used and in good condition. $200 plus shipping for all 5. An Inquiry into your eHam classifieds post : 5 single band Dunestar bandpass filters. 5 single band Dunestar bandpass filters. Send this to a friend with an introduction. Required!. DuneStar Model 600 Bandpass Filter Characteristics Bob Wolbert, K6XX The DuneStar 600 is a relay-selected bandpass filter array that allows operating two stations on different bands simultaneously-without blowing up your receiver front-ends. This model consists of six bandpass filters, one each for 160m, 80m, 40m, 20m, 15m, and 10m.

For radios this year we had the previously mentioned 480SAT, a FT-100MV Field, and two ICOM 706s. We were able to use Dunestar bandpass filters for two stations and an ICE 419B bandpass filter for the GOTA. We still need to improve filtering next year by having a stub filter for the 6m station to aid in keeping down interference.

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11 years ago
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A Honda generator was on hand for charging and powering the laptops used in logging and PSK operations. A pair of Dunestar filters were used for out of band rejection considering our antennas were only a couple of feet apart. The filters worked flawlessly and neither station experienced interference. I have a pair of Dunestar 600's. Have you asked Ron for the component values ? Alternatively, open up your Dunestar and record the capacitor values. They aren't painted over, or any other camouflage to keep their value a secret. 73, Steve, N2IC On 06/26/2013 10:54 AM, Alan Dewey wrote: Has anyone had experience repairing Dunestar 600 filters?. Dunestar Bandpass Filters are 3-pole, capacitive coupled, with High-Q capacitors and inductors used for tuned circuits. Filters are conctructed on glass-epoxy PCB in Aluminum Enclosure. Inputs and outputs are at DC ground potentials. Dimensions: 51 x 152 x 44 mm (including mounting flange.

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11 years ago
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Subject: [Elecraft] K3 Aux I/O and Dunestar 600 Bandpass filters To: elecraft at mailman.qth.net Message-ID: <4AD87253.4 at gmail.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed I have searched archives galore and cannot find, or do not know how to search properly for interfacing the K3 to the Dunestar 600 Bandpass filters. Dunestar Systems, Saint Helens, OR. 270 likes. Dunestar Systems manufactures RF Bandpass & HF Highpass Filters, HF Triplexers, Portable Antennas and Switching Devices for amateur radio and commercial. Subject: : Dunestar summary: From: : [email protected] ([email protected]): Date: : Tue Aug 2 11:07:00 1994.

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11 years ago
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Filter select relays to be located on individual filter boards. • Individual filters plug-in to motherboard or may be used stand-alone. • Motherboard to accommodate 6 plug-in filters and by-pass relays. • DB9 male connector on MB wired for plug-in replacement of Dunestar 600. Roller Coasters of SeaWorld Orlando. Average Wait Times, What Time to Ride, Reviews. Austin Rdzanek Dec 02, 2021. A Guide to SeaWorld Orlando’s Roller Coasters.. Jan 18, 2017 · Kraken Virtual Reality, Central Florida’s first VR roller coaster, and a new Dolphin Nursery are coming to SeaWorld Orlando in 2017 as part of $175 million in new and upgraded attractions recently.

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10 years ago
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I own two Dunestar 600 all-band filters and individual Dunestar 300 band filters for 10, 15, 20, 40 and 80 meters. I also use a Dunestar 2-radio headphone selector. Ron promptly answered my email and told me everything I needed to. Homebrew automatic SO2R controller (two homebrew band decoders drive a two-of-ten homebrew SO2R antenna switch and two Dunestar model 600 bandpass filters) 2nd tower rotator box (Ham M) Yaesu FT-1000 (main station) Main tower rotators (upper for top KT-34XA and 2el 40, lower for lower KT-34XA and 6M).

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Dunestar Systems, Saint Helens, OR. 270 likes. Dunestar Systems manufactures RF Bandpass & HF Highpass Filters, HF Triplexers, Portable Antennas and Switching Devices for amateur radio and commercial. I have a pair of Dunestar 600's. Have you asked Ron for the component values ? Alternatively, open up your Dunestar and record the capacitor values. They aren't painted over, or any other camouflage to keep their value a secret. 73, Steve, N2IC On 06/26/2013 10:54 AM, Alan Dewey wrote: Has anyone had experience repairing Dunestar 600 filters?.

A passive filter is a kind of electronic filter that is made only from passive elements -- in contrast to an active filter, it does not require an external power source (beyond the signal). High power co-axial stub filters to minimize inter station interference. Dunestar Model 600 Multi-Band Remote Switched Bandpass Filters. DUNESTAR 600 multiband filters The pictures which follow were made using an HP-141T-HP8552B-HP8553B spectrum analyzer with an HP8444A tracking generator. The scans were performed on June 8, 2008 on a DuneStar Model 600 which was delivered on June 2, 2008 and probably manufactured in late May 2008. The unit was run into a 50 ohm resistive load. i hate being blocked Clay County Detention Center Contact Information. Address and Phone Number for Clay County Detention Center, a Jail & Prison, at Alabama 77, Ashland AL. Name Clay County Detention Center Address 41771 Alabama 77 Ashland, Alabama, 36251 Phone 256-354-7713 Website clayso.net.

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10 years ago
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Summary Dunestar and I.C.E. filters: From: [email protected] (C.T. Morton) Date: Mon Nov 4 14:49:39 1996 > At NC0P Toni uses a Dunestar (we lovingly call them dungstars) on all four rigs. We are usually M/S but have the other rigs looking for mults. very gud results in my opinion. Seem to still get some 20-15 meter bleed over but this is in. It is a honour for us to support VP8/VP8PJ DX pedition to South Orkney Islands, 2020 with our NEW 1500DX, II SERIES PERFOBOX BANDPASS FILTERS . LowBandSystems 1500W DX SERIES II, PERFOBOX filters, nice 8 high stack of filters, cool idea for large, installation! 01/12/2019. Photo from A5A - Bhutan. Dunestar Systems, Saint Helens, OR. 270 likes. Dunestar Systems manufactures RF Bandpass & HF Highpass Filters, HF Triplexers, Portable Antennas and Switching Devices for amateur radio and commercial.

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10 years ago
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10 years ago
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Band Pass Filter Fever - Guess-timating the Filter Efficacy - Part 5; Band Pass Filter Fever - The Guess-timated Scale and Actual Guess-timated Measurements - Part 6; NEW, 20190921 Retroactive Filter Tuning with NanoVNA; Photos of the filters as constructed by W4KAZ, based on NVARC and K4VX designs -. The K4D adds a second A-to-D converter and a second set of. Things that helped were an inline Dunestar AM BCB filter, as I have two nearby AM stations. The biggest help was an inline RF choke at the antenna feed point. It reduced my noise floor about 2 S units which is significant. I use the MyAntennas choke balun. Some people need to use another RF choke just before their receiver as well, I do not.

DUNESTAR 600 multiband filters The pictures which follow were made using an HP-141T-HP8552B-HP8553B spectrum analyzer with an HP8444A tracking generator. The scans were performed on June 8, 2008 on a DuneStar Model 600 which was delivered on June 2, 2008 and probably manufactured in late May 2008. The unit was run into a 50 ohm resistive load.

Dunestar Systems manufactures RF Bandpass Filters, HF Highpass Filters, HF Triplexers, Portable Antennas and Switching Devices for amateur radio and commercial users. We are the originators of HF multiband switchable bandpass filters. For more information, click any product below. And, of course, if you have any questions, feel free to contact us!. Dunestar Systems, Saint Helens, OR. 270 likes. Dunestar Systems manufactures RF Bandpass & HF Highpass Filters, HF Triplexers, Portable Antennas and Switching Devices for amateur radio and commercial. Dipoles. Hexbeam - 10-20 meters. Crank-IR Vertical 10-80 meters. Shared Apex Loop Array RX Antenna. Filter select relays to be located on individual filter boards. • Individual filters plug-in to motherboard or may be used stand-alone. • Motherboard to accommodate 6 plug-in filters and by-pass relays. • DB9 male connector on MB wired for plug-in replacement of Dunestar 600.

One option is to buy external bandpass filters--they are sold by Top Ten Devices and Dunestar for multi-transmitter contest stations. Below are published articles on building tight bandpass filters. Articles. Sep 1998 QEX . 57 . A Narrow 80 Meter Band-Pass Filter (RF) Lau, Zack, W1VT . Nov 1998 QEX . 58 . A Narrow-Bandwidth 40 Meter Band-pass. is a switch that disables the DuneStar power when SWLing; even megapower broadcasters are hard to copy when the fil-ters chop them out! Operation This is the best part. Once the interface is built and con-nected, no user intervention is required. Change the frequency of the FT-1000MP and the DuneStar bandpass filter bank switches automatically.

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9 years ago
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The DuneStar 600 is a relay-selected bandpass filter array that allows operating two stations on different bands simultaneously-without blowing up your receiver front-ends. This model consists of six bandpass filters, one each for 160m,. DUNESTAR 600 multiband filters The pictures which follow were made using an HP-141T-HP8552B-HP8553B spectrum analyzer with an HP8444A tracking generator. The scans were performed on June 8, 2008 on a DuneStar Model 600 which was delivered on June 2, 2008 and probably manufactured in late May 2008. The unit was run into a 50 ohm resistive load.

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8 years ago
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The DuneStar 504 is a relay-selected bandpass filter array that allows operating two stations on different bands simultaneously--without blowing up your receiver front-ends. This model consists of five bandpass filters, one each for 160m, 80m, 40m, 20m, and 15m.

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7 years ago
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DuneStar Model 600 Bandpass Filter Characteristics Bob Wolbert, K6XX The DuneStar 600 is a relay-selected bandpass filter array that allows operating two stations on different bands simultaneously-without blowing up your receiver front-ends. This model consists of six bandpass filters, one each for 160m, 80m, 40m, 20m, 15m, and 10m. Where did you find it from Dunestar? > I have six mono band filters from I.C.E. They work pretty good but to > change them manually is time consuming "operation", and I decided to > buy Model 419B - Combination Bandpass Filter. > I spoke to I.C.E. and Array Sol. DUNESTAR 600 multiband filters Revised November 4, 2008 [added pictures of internals] The pictures which follow were made using an HP-141T-HP8552B-HP8553B spectrum analyzer with an HP8444A tracking generator. The inital scans were performed on June 8, 2008 on a DuneStar Model 600 which was delivered on June. DuneStar Model 504 Bandpass Filter Characteristics By Bob Wolbert, K6XX The DuneStar 504 is a relay-selected bandpass filter array that allows operating two stations on different bands simultaneously—without blowing up your receiver front-ends. This model consists of five bandpass filters, one each for 160m, 80m, 40m, 20m, and 15m.

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1 year ago
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One of the items we need to stock up on is band pass filters. I'm interested in finding something like the Dunestar mult-band filter setups. However, due to the death of the founder of Dunestar, they are not producing anything right now. I found offerings at DX Engineering:.

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