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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. 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. Find many great new & used options and get the best deals for TTE Filters 450Mhz bandpass filter 07766 CAGE CODE, H5783, K5304-450M-1.5P-50-A at the best online prices at eBay! Free shipping for many products! ... DUNESTAR BAND PASS FILTER for 160M (1.8 MHZ) $60.24 + $12.05 shipping + $12.05 shipping + $12.05 shipping. 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. 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. 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. 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. 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). Dans un état maniaque (qui précède le meurtre), le sociopathe est intrépide et pense qu'il est omnipotent, parfois le Mal incarné (c'était par exemple le cas de Richard Ramirez, le « Night Stalker »).Un autre sociopathe, lorsqu'il se préparait à « chasser », s'habillait en Indien et utilisait ses propres excréments comme.Ils essaieront constamment d’attirer l’attention sur eux. 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. 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. 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. 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 - 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. 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. 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. 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. 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. 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.

Dunestar filters

. Our BPF-Luxury kit includes 6 filters: BPF-1.8, BPF-3.5, BPF-7, BPF-14, BPF-21, BPF-28 (for 1.8, 3.5, 7, 14, 21 and 28 MHz respectively). The filters should be installed between the transceiver and amplifier . utilizing the SO-239 connectors. Filters provide tremendous interference attenuation to/from the stations operating in the other bands. Whereas the TinyPaddle is designed around being the most simple/minimalist backup paddle solution-basically a wee paddle with a male 3.5mm connector that plugs directly into a rig's paddle jack-the TPJ takes it one step further.. The TPJ is essentially the TinyPaddle with a female 3.5mm plug encased in a 3D-printed holder and protective cover. DuneStar builds a relay-switched bandpass filter array that speeds up the process (to instantaneously, if the rig is properly interfaced). Here are the measured filter characteristics of the (older) five-band 504 and the newer six-band 600. DuneStar 504 Filter Characteristics (HTML) [25 June 1998]. 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. 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 &. Welcome to Sunshine Filters Home Page. 12415 73RD COURT- LARGO, FLORIDA 33773. 800-423-7947 * 727-573-1897 (FAX) *** SERVING INDUSTRY SINCE 1985 ***. Sunshine Filters, located in west central Florida, is a manufacturer of top quality industrial filter elements for air and gas applications. Our company was founded on the philosophy of a quality. Dunestar 1.8 MHZ (160M) band pass filter. More infos here. Dunestar 1.8 MHZ (160M) band pass filter. More infos here. Skip to main content. Shop by category. Shop by category. Enter your search keyword. Advanced: eBay Deals; Find a. The band output port drives things like relay-switched DuneStar band filters The CI-V interface allows rig control via computer, and makes logging programs like TR-Log and CT really shine correspond with the values CI-V BAUD and CI-V ADDRES in the IC7100 [Updated 8 December 1997] The K6XX CI-V and Band Select Output Interface for Icom Rigs. 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. 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?. 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. Find many great new & used options and get the best deals for TTE Filters 450Mhz bandpass filter 07766 CAGE CODE, H5783, K5304-450M-1.5P-50-A at the best online prices at eBay! Free shipping for many products! ... DUNESTAR BAND PASS FILTER for 160M (1.8 MHZ) $60.24 + $12.05 shipping + $12.05 shipping + $12.05 shipping. 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. Dipoles. Hexbeam - 10-20 meters. Crank-IR Vertical 10-80 meters. Shared Apex Loop Array RX Antenna. 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. 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 - RF Bandpass Filters, HF Triplexer, K6KV Triplexer, HF Highpass Filters, Portable Antennas and Switching Devices, as well as custom applications for amateur radio and commercial users. Band-Pass Filters for HF Tranceivers (arrl.org) Universal HF Band Pass Filter Kit (kitsandparts.com) '. Building your own Band Pass Filters:. My experience has been with the Dunestar D600 six band filter. Here are my reasons: 1) If the CQ antenna is doing most of the transmitting, I would want the extra protection on the S&P side since it has to deal with the most RF. ... 2) My experience has been that the filters are better at filtering out harmonics (and other products) on the RX. 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. Whereas the TinyPaddle is designed around being the most simple/minimalist backup paddle solution–basically a wee paddle with a male 3.5mm connector that plugs directly into a rig’s paddle jack–the TPJ takes it one step further.. The TPJ is essentially the TinyPaddle with a female 3.5mm plug encased in a 3D-printed holder and protective cover. 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. 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). 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. With over 50 years' experience as the industry leading manufacturer of premium aftermarket motorcycle products, Performance Machine is bringing our award-winning design, engineering, and manufacturing expertise to the off-road market. MSRP: 429.00. Description: Station Master™ is unique controller on the market designed mainly for small or moderate, multiple antenna, single rotator/SteppIR stations. Provides radio control, antenna switch control, band pass filters switching, selective SteppIR tuning, computer controlled rotator interface, interface for automatic power. 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. 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:. 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. 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. Here is Dunestar specs for single band filters. Hope I’m not posting too much? ... CONSTRUCTION: 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. Dimensions: HWD 2.0 X 6.0 X 1.. Dunestar Systems, Saint Helens, OR. 271 likes. Dunestar Systems manufactures RF Bandpass & HF Highpass Filters, HF Triplexers, Portable Antennas and. 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. As some of you may know a couple years ago I took over building bandpass filters for Dunestar Systems. In the past we had a customer inquire about the duty cycle rating of our filters and I can't recall what we told him. So I now have another customer asking the same question stating his club activity frequently uses RTTY at 100 watts and in my.

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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. 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). 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. The Dunestar 400 HPF does what it is supposed to do - the cutoff is very sharp starting just below 1.8 mhz. Without the filter I would not have been able to operate on 160 meters from this QTH near a broadcast station in Guam. Many thanks to Dunestar - KH2/K4SXT. 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. Dunestar Systems, Saint Helens, OR. 271 likes. Dunestar Systems manufactures RF Bandpass & HF Highpass Filters, HF Triplexers, Portable Antennas and. reddit coolsculpting. 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.. • Filter select relays to be. 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. 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 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!. 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:. 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. Dans un état maniaque (qui précède le meurtre), le sociopathe est intrépide et pense qu'il est omnipotent, parfois le Mal incarné (c'était par exemple le cas de Richard Ramirez, le « Night Stalker »).Un autre sociopathe, lorsqu'il se préparait à « chasser », s'habillait en Indien et utilisait ses propres excréments comme.Ils essaieront constamment d’attirer l’attention sur eux. 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!. 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. 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 &. For audio switching I use a Dunestar 2-radio headphone switch. I also use two Dunestar 600 all-band filters. For audio filtering I use a JPS NIR-12 dual-DSP audio filter on each radio. A new 3 element SteppIR was installed in October 2010 but was damaged in Hurricane Isaac in August 2012. I relocated my smaller Rohn 25 tower from the back porch. 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. My experience has been with the Dunestar D600 six band filter. Here are my reasons: 1) If the CQ antenna is doing most of the transmitting, I would want the extra protection on the S&P side since it has to deal with the most RF. ... 2) My experience has been that the filters are better at filtering out harmonics (and other products) on the RX. 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 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. 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. 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. 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. Dans un état maniaque (qui précède le meurtre), le sociopathe est intrépide et pense qu'il est omnipotent, parfois le Mal incarné (c'était par exemple le cas de Richard Ramirez, le « Night Stalker »).Un autre sociopathe, lorsqu'il se préparait à « chasser », s'habillait en Indien et utilisait ses propres excréments comme.Ils essaieront constamment d’attirer l’attention sur eux. . 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:. 2 Dunestar Band filters 2 Dunestar Band filters, one each 15 meter filter asking $62.00 shipped free to the lower 48 states 12 meter filter asking $52.00 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. 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 &. 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. . Subject: : Dunestar summary: From: : [email protected] ([email protected]): Date: : Tue Aug 2 11:07:00 1994. 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 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. My experience has been with the Dunestar D600 six band filter. Here are my reasons: 1) If the CQ antenna is doing most of the transmitting, I would want the extra protection on the S&P side since it has to deal with the most RF. ... 2) My experience has been that the filters are better at filtering out harmonics (and other products) on the RX. 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. 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. 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. 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 &. . 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 &. 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. 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 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. Whereas the TinyPaddle is designed around being the most simple/minimalist backup paddle solution–basically a wee paddle with a male 3.5mm connector that plugs directly into a rig’s paddle jack–the TPJ takes it one step further.. The TPJ is essentially the TinyPaddle with a female 3.5mm plug encased in a 3D-printed holder and protective cover. . The band output port drives things like relay-switched DuneStar band filters The CI-V interface allows rig control via computer, and makes logging programs like TR-Log and CT really shine correspond with the values CI-V BAUD and CI-V ADDRES in the IC7100 [Updated 8 December 1997] The K6XX CI-V and Band Select Output Interface for Icom Rigs. 2 Dunestar Band filters 2 Dunestar Band filters, one each 15 meter filter asking $62.00 shipped free to the lower 48 states 12 meter filter asking $52.00 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. 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. 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.