Availability
Transmit Band Pass Filters
Antennas-Amplifiers 6290 2m 100W Transmit Band Pass Filters
Antennas-Amplifiers 6290 2m 100W Transmit Band Pass Filters are equally effective for both transmitting and receiving, boasting a super low insertion loss of just 0.15 dB. These Band Pass Filter are designed for use with transceivers and transverters up to 100W output. They are also ideal for placement before any wide band low noise amplifier (LNA) to protect against out-of-band signals. With their super low insertion loss, these 2m Transmit Band Pass Filters are excellent for use before any LNA or to protect receivers from HF transmitters. They effectively suppress signals from HF (1.8 – 28 MHz), 6 meters (50-54 MHz), and 70 cm (430 – 440 MHz) bands. Additionally, these filter helps reduce television interference (TVI) problems, making them particularly useful if you or your neighbors have strong HF, 6 meter, or 70 cm transmitters.
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$267.99
Antennas-Amplifiers 6530 70cm 200W Low Loss Band Pass Filters
Antennas-Amplifiers 6530 70cm 200W Low Loss Band Pass Filters are designed for stations requiring low insertion loss and reliable front end protection across the 430–450MHz range. Capable of handling up to 200 watts of transmit power, these filters are equally effective in both transmit and receive applications—introducing only 0.12dB of loss while sharply attenuating out of band signals. Installed after a 200 watt transmitter, the 6530 helps suppress unwanted emissions and reduces interference into neighboring bands. When positioned ahead of a wideband preamplifier, it prevents overload and desensitization caused by strong signals outside the passband, making it ideal for weak signal, contesting, repeater, and EME applications. The 6530 filter employs high Q coils and capacitors with unloaded Q values exceeding 1500, ensuring steep skirts and excellent selectivity. For durability, a rigid 0.8 mm brass enclosure provides mechanical stability and long service life. N type female connectors ensure secure, low loss connections.
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$288.99
Antennas-Amplifiers 15M High Power Band Pass Filters
Antennas-Amplifiers 15M High Power Band Pass Filters cover the 21.0-21.45MHz frequency range, with power handling capabilities up to 4,000W PEP and they are perfect for multi-station environments like special events, field days and portable operation to protect receivers from excessively strong out-of-band signals. The ATF-5540 is ideal for both reception and transmission and is designed to have an extremely insertion low loss of less than 0.12 dB from 21.0-21.45MHz (15 meters) and significantly suppresses out-of-band interference. All Measurements on the assembled filters were performed with a full 2-port calibrated HP8753ES network analyzer. The ATF-5540 Band Pass Filters are engineered with an advanced filter design, enclosed in a robust powder-coated aluminum enclosure. They are equipped with silver-plated SO-239 connectors, ensuring exceptionally low insertion loss, minimal SWR, and high attenuation of out-of-band signals across the entire 15M band.
Not Yet Reviewed
$392.99
Antennas-Amplifiers 6510 70cm 50W Narrow Band Pass Filters
Antennas-Amplifiers 6510 70cm 50W Narrow Band Pass Filters are low insertion loss, narrowband 70cm band pass filters engineered to deliver clean, interference free operation across the 430–450MHz frequency range. Designed for both transmit and receive operation, these filters support up to 50 watts of RF power while maintaining an exceptionally low insertion loss of approximately 0.15dB, ensuring strong signal integrity and protecting overall system sensitivity. When installed after a 50W transmitter, the filters effectively suppress unwanted out of band emissions, reducing interference into nearby services. Placed ahead of wideband preamplifiers, they help prevent overload and desensitization caused by strong adjacent band signals—making them well suited for weak signal work, repeaters, and RF dense operating environments. With their compact size and straightforward installation, 6510 filters integrate easily into a variety of UHF station layouts, providing a practical and reliable way to improve signal cleanliness and system performance.
Not Yet Reviewed
$251.99
Antennas-Amplifiers 6344 Double 2x200W 2m & 70cm Bandpass Filters
Antennas-Amplifiers 6344 Double 2x200W 2m & 70cm Bandpass Filters are a dual band, dual power 2×200W band pass filter engineered for clean, interference free operation on both 144–148MHz (2m) and 430–450MHz (70cm). This "double" filter design incorporates two independent high power bandpass sections, each rated for 200 watts, providing exceptional filtering performance for stations using a single feed dual band antenna. Built to dramatically reduce unwanted signals, the 6344 suppresses not only HF, 6m, 4m, and FM broadcast interference but also problematic intermediate VHF/UHF frequencies such as 170MHz and 210MHz, as well as key harmonic ranges including 288MHz, 720MHz, 880MHz, and more. The result is a cleaner signal path and significantly reduced receiver overload in busy RF environments. With very low insertion loss on both amateur bands, the filter maintains full transmit and receive performance while sharply attenuating out of band energy. Its dual band architecture makes it especially ideal for use with 2m/70cm dual band antennas that use a single connector, providing excellent front end protection without complicating station layout.
Not Yet Reviewed
$459.99
Antennas-Amplifiers 6311 2-meter 200W Narrow Band Pass Filters
Antennas-Amplifiers 6311 2 meter 200W Narrow Band Pass Filters are engineered to deliver reliable, high-performance signal conditioning across the full U.S. 2 meter amateur band (144–148 MHz). Designed to handle power levels up to 200 watts, these filters effectively refine transmitter output while also serving as protective front-end filters for broadband preamplifiers, shielding sensitive equipment from unwanted out-of-band signals. Built with precision high Q coils and premium capacitors, they achieve exceptionally low insertion loss while maintaining outstanding selectivity. These filters also help mitigate TVI issues and reduce interference from nearby strong transmitters on HF, 6m, or 70cm bands, ensuring smoother operation and improved coexistence with neighboring systems.
Not Yet Reviewed
$295.99
Antennas-Amplifiers 6340 2m/70cm Dual Band 200W Bandpass Filters
Antennas-Amplifiers 6340 2m/70cm Dual Band 200W Bandpass Filters are precision engineered for operators who demand clarity, power, and reliability. Designed with exceptionally low insertion loss and a 200 watt power rating, these filters excel at both transmit and receive, preventing receiver overload from HF, 6m, and 4m stations while powerfully suppressing harmonics above 450MHz, including 720MHz, 864MHz, GSM 930MHz, and even 23cm at 1296MHz. With an input return loss better than –26dB, a broad operating range of 144–450MHz, and features N type female connectors. Their precise bandpass design allows only the 2m and 70 cm bands to pass cleanly, ensuring that unwanted signals and interference are effectively eliminated for consistently clear communications. Compact, easy to integrate, and especially well suited for dual band antennas, these filters bring professional grade performance to your shack.
Not Yet Reviewed
$318.99
Antennas-Amplifiers 10M High Power Band Pass Filters
Antennas-Amplifiers 10M High Power Band Pass Filters cover the 28.0-29.0MHz frequency range, with power handling capabilities up to 4,000W PEP and they are perfect for multi-station environments like special events, field days and portable operation to protect receivers from excessively strong out-of-band signals. The ATF-5550 is ideal for both reception and transmission and is designed to have an extremely insertion low loss of less than 0.15 dB from 28.0-29.0MHz (10 meters) and significantly suppresses out-of-band interference. All Measurements on the assembled filters were performed with a full 2-port calibrated HP8753ES network analyzer. The ATF-5550 Band Pass Filters are engineered with an advanced filter design, enclosed in a robust powder-coated aluminum enclosure. They are equipped with silver-plated SO-239 connectors, ensuring exceptionally low insertion loss, minimal SWR, and high attenuation of out-of-band signals across the entire 10M band.
Not Yet Reviewed
$392.99
Antennas-Amplifiers 6320 2-meter 1500W Transmit Band Pass Filters
Antennas Amplifiers 6320 2 Meter 1500W Transmit Band Pass Filters are engineered for high performance 144–148MHz operation, delivering exceptionally low loss and outstanding harmonic suppression for demanding transmit and receive environments. Built with ultra high Q coils and capacitors—each exceeding a Q factor of 4500—these filters achieve their low loss performance through precise component selection and meticulous factory alignment. Designed primarily for high power transmitting applications, the 6320 also excels as a receive chain protector, making it suitable for placement ahead of wideband LNAs (low noise amplifier) to shield sensitive front end devices from powerful out of band RF energy. Supporting amplifiers such as the 8877, GS35, GS31, and other tube or transistor based stages up to 1.5kW output, the 6320 delivers exceptional stability under heavy load. Its integrated 12VDC cooling fan ensures reliable thermal management during extended operation, while rugged N type female connectors provide secure, low loss RF connections. The filter's performance makes it ideal for DXpeditions, multi multi contest stations, and installations where strong HF, 6 meter, 1.25 meter, or 70 centimeter signals would otherwise overload receivers or degrade system sensitivity. Offering deep suppression of unwanted signals from HF (1.8–28MHz), 50–54MHz, and 70cm (430–440MHz), the 6320 effectively eliminates harmonics and reduces the risk of TVI and RFI issues—an important advantage for operators working in close proximity residential environments. All performance data for the 6320 is verified using an HP8753ES network analyzer with full two port calibration, ensuring accuracy and real world confidence in its measured attenuation and insertion loss characteristics.
Not Yet Reviewed
$408.99
Antennas-Amplifiers 20M High Power Band Pass Filters
Antennas-Amplifiers 20M High Power Band Pass Filters cover the 14.0 – 14.35MHz frequency range, with power handling capabilities up to 4,000W PEP and they are perfect for multi-station environments like special events, field days and portable operation to protect receivers from excessively strong out-of-band signals. The ATF-5530 is ideal for both reception and transmission and is designed to have an extremely insertion low loss of less than 0.12 dB from 14.0 – 14.35MHz (20 meters) and significantly suppresses out-of-band interference. All Measurements on the assembled filters were performed with a full 2-port calibrated HP8753ES network analyzer. The ATF-5530 Band Pass Filters are engineered with an advanced filter design, enclosed in a robust powder-coated aluminum enclosure. They are equipped with silver-plated SO-239 connectors, ensuring exceptionally low insertion loss, minimal SWR, and high attenuation of out-of-band signals across the entire 20M band.
Not Yet Reviewed
$392.99
Antennas-Amplifiers 160M High Power Band Pass Filters
Antennas-Amplifiers 160M High Power Band Pass Filters cover the 1.8 – 2.0MHz frequency range, with power handling capabilities up to 4,000W PEP and they are perfect for multi-station environments like special events, field days and portable operation to protect receivers from excessively strong out-of-band signals. The ATF-5500 is ideal for both reception and transmission and is designed to have an extremely low insertion loss of less than 0.1 dB from 1.8 – 2.0MHz (160 meters) and significantly suppresses out-of-band interference. The second harmonic is suppressed by more than 40 db. All Measurements on the assembled filters were performed with a full 2-port calibrated HP8753ES network analyzer. The ATF-5500 Band Pass Filters are engineered with an advanced filter design, enclosed in a robust powder-coated aluminum enclosure. They are equipped with silver-plated SO-239 connectors, ensuring exceptionally low insertion loss, minimal SWR, and high attenuation of out-of-band signals across the entire 160M band.
Not Yet Reviewed
$392.99
Antennas-Amplifiers 40M High Power Band Pass Filters
Antennas-Amplifiers 40M High Power Band Pass Filters cover the 7.0 – 7.3MHz frequency range, with power handling capabilities up to 4,000W PEP and they are perfect for multi-station environments like special events, field days and portable operation to protect receivers from excessively strong out-of-band signals. The ATF-5520 is ideal for both reception and transmission and is designed to have an extremely insertion low loss of less than 0.12 dB from 7.0 – 7.3MHz (40 meters) and significantly suppresses out-of-band interference. All Measurements on the assembled filters were performed with a full 2-port calibrated HP8753ES network analyzer. The ATF-5520 Band Pass Filters are engineered with an advanced filter design, enclosed in a robust powder-coated aluminum enclosure. They are equipped with silver-plated SO-239 connectors, ensuring exceptionally low insertion loss, minimal SWR, and high attenuation of out-of-band signals across the entire 40M band.
Not Yet Reviewed
$392.99
Antennas-Amplifiers 5940 200W 6-meter Band Pass Filters
Antennas-Amplifiers 5940 200W 6-meter Band Pass Filters are extreme low loss 6 meter band pass filters engineered for both transmitting and receiving applications in the 50–52MHz range. Designed for operators who demand clean signals and maximum weak signal performance, these filter excel at pulling DX out of the noise while maintaining exceptional stability under real world RF conditions. With an impressively low insertion loss, and attenuation of just 0.11dB, they are ideal for placement ahead of any LNA (low noise amplifier) , safeguarding sensitive receiver front ends from strong HF transmitters during DXpeditions and multi multi contest environments. The Antennas-Amplifiers 5940 band pass filters deliver powerful suppression of unwanted harmonics—including those around 100MHz, 150MHz, and beyond—ensuring smooth operation and preventing interference from creeping into nearby bands. Built with premium grade components and meticulous filter design, the 5940 provides reliable, repeatable performance while eliminating harmonic emissions from linear amplifiers. Whether used for transmission, reception, or both, these Antennas-Amplifiers 5940 200W 6-meter Band Pass Filters deliver the clarity, protection, and efficiency serious VHF operators expect.
Not Yet Reviewed
$273.99
Antennas-Amplifiers 5960 6-meter 1500W Transmit Band Pass Filters
Antennas Amplifiers 5960 6 Meter 1500W Transmit Band Pass Filters deliver exceptional performance on the 6-meter Magic Band, providing clean, reliable operation across 50–51MHz for high power stations. Engineered with precision wound high Q coils and capacitors boasting a Q factor exceeding 4000, this filter achieves remarkably low insertion loss through meticulous component selection and exacting tuning. Designed to operate seamlessly with high power linear amplifiers—including 8877, GS35, GS31, 2×GI7B, and other tubes up to 1.5kW output—the 5960 ensures pure, interference free transmission while offering equally strong performance as a receiving filter. Ideal for protecting sensitive front end devices, the 5960 can be placed ahead of a wideband LNA (low noise amplifier) such as those using the PGA 103+, safeguarding against damaging out of band energy in demanding multi multi setups, DXpeditions, or high RF noise environments. These filter deliver outstanding harmonic suppression, effectively eliminating spurious energy around100MHz, 150MHz, and beyond, while also shielding equipment from nearby HF transmitters. The result is a filter that not only enhances transmission purity but also fortifies receiving chains against interference. Through careful engineering and superior component quality, the 5960 provides the robust performance, stability, and signal cleanliness expected from a premium Antennas Amplifiers RF solution.
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$368.99
Antennas-Amplifiers 80M High Power Band Pass Filters
Antennas-Amplifiers 80M High Power Band Pass Filters cover the 3.4 – 4.0MHz frequency range, with power handling capabilities up to 4,000W PEP and they are perfect for multi-station environments like special events, field days and portable operation to protect receivers from excessively strong out-of-band signals. The ATF-5510 is ideal for both reception and transmission and is designed to have an extremely low insertion loss of less than 0.12 dB from 3.5 – 4.0MHz (80 meters) and significantly suppresses out-of-band interference. All Measurements on the assembled filters were performed with a full 2-port calibrated HP8753ES network analyzer. The ATF-5510 Band Pass Filters are engineered with an advanced filter design, enclosed in a robust powder-coated aluminum enclosure. They are equipped with silver-plated SO-239 connectors, ensuring exceptionally low insertion loss, minimal SWR, and high attenuation of out-of-band signals across the entire 80M band.
Not Yet Reviewed
$392.99
Antennas-Amplifiers 5980 6-meter 1500W Transmit Bandpass Filters
Antennas Amplifiers 5980 6 Meter 1500W Transmit Bandpass Filters are engineered for operators who demand absolute performance across the full 50–54 MHz 6 meter frequency range. Designed to partner effortlessly with high power amplifiers—including 8877, GS35, GS31, 2×GI7B, and a wide range of tube or transistor based stages—these filters confidently manage up to 1500 watts, making them an essential addition to any serious station. These filters employ high Q coils and capacitors rated above 4000, achieving remarkably low insertion loss through careful component choices and precise alignment. While the 5980 series is optimized for clean, high power transmission, its architecture also excels in receive chain protection; when placed ahead of wideband LNAs such as those based on the PGA 103+, these filters shield sensitive front end devices from powerful out of band energy. With outstanding suppression of harmonics—including deep attenuation at 100MHz, 150MHz, and beyond—these filters further deliver exceptional rejection of third order harmonics, as well as strong isolation on the 144MHz and 432MHz bands. A specially engineered notch provides deep FM band attenuation from 100–108MHz, and with more than 50dB of suppression on second harmonic content, the 5980 ensures that transmitted signals remain clean, compliant, and interference free. Antennas-Amplifiers 5980 6-meter 1500W Transmit Bandpass Filters are Built for operators who expect both rugged reliability and top tier RF purity, these 6 meter bandpass filters set the standard for high performance Magic Band operation.
Not Yet Reviewed
$386.99
Antennas-Amplifiers 5970 6-meter 4kW Low Loss Band Pass Filters
Antennas-Amplifiers 5970 6 meter 4 kW Low-Loss Band Pass Filters are designed for high-performance operation in demanding RF environments. Built with precision high Q inductors and capacitors (Q > 4000), the filter achieves exceptionally low insertion loss through careful engineering and tuning. Intended to be used with linear amplifiers 8877, GS35, GS31, 2xGI7B, and with other tubes with up to 4 kW output. When placed ahead of sensitive front-end equipment, it provides effective protection and signal conditioning, shielding LNAs such as the PGA 103+ from strong out-of-band signals while improving the performance of wideband SDR receivers on the 6 meter band. It is well suited for challenging applications including DX expeditions and multi multi station environments, offering strong suppression of harmonics (100 MHz, 150 MHz, and higher), reducing HF interference, and minimizing out-of-band noise across a wide frequency range.
Not Yet Reviewed
$428.99
DX Engineering 902-928 MHz Racing Timer Filter and Cable Set
The DX Engineering 902-928 MHz Racing Timer Filter Set is a custom solution that enhances the operation of the Farmtek Basic Roping Timer Package, which is also suitable for use on other IOT, ISM, RFID, M2M LPWAN and LoRa applications. Interference is eliminated and range extended when using this specific 902-928 MHz band pass filter with custom low loss coaxial cables, which help to provide accurate signals, including start/stop signals for the Farmtek timing unit. DX Engineering collaborated with the Akron Sports Car Club to enhance their racecourse timing accuracy with the Farmtek system for sports car events. The DXE-900M-BPF Filter Set includes: 1 pc. - Band Pass Filter, 915 MHz center frequency (recommended for 902 to 928 MHz use) with type N female connectors. 1 pc. - Low-loss coaxial cable assembly, 14 in., Right-Angle Reverse Polarity (RP) SMA connector (for timer unit) to a type N male connector to connect the filter 1 pc. - Type N male to RP SMA Adapter. The supplied adapter is to facilitate a seamless connection to an appropriate 900 MHz magnetic mount antenna (not included) to allow mounting the antenna outside of an enclosed space such as a scoring trailer. Optional high gain 900 MHz whips with Reverse Polarity (RP) SMA are available from DX Engineering DXE-900M-ANT-5-2, for connection directly to the timer, the filter or to an appropriate RP SMA antenna mount. Custom low loss coaxial cable assemblies are also available from DX Engineering.
Not Yet Reviewed
$399.99
Clearance
Low Band Systems HF Transmit Band Pass Filters
NOTICE: Due to materials supply and logistical issues, resupply of Low Band Systems products will be delayed for an indefinite period. Low Band Systems HF Transmit Band Pass Filters are very high quality multi-stage devices designed to specifically limit the RF band pass to a single Amateur band. They eliminate image and harmonic RF interference issues for dedicated mono-band operations in multi-radio contesting environments. Required for use with transmit multiplexers, these passive filters provide the additional isolation needed to allow multiple transceivers to be operated on different bands simultaneously on the same antenna. Used individually on mono-band radio and antenna combinations, these filters provide the isolation required in multi-radio contest stations. Low Band Systems band pass filters are available for each of the ten HF Amateur Bands in 200, 500 and 1,500 watt models, and 2,000 watt models for the main contesting bands of 160, 80, 40, 20 ,15 and 10 meters. Their unique aluminum enclosures, some with fans, are laser cut with "Perfo-Box" on the side and their power handling and band of operation are stenciled chassis cutouts in European nomenclature, such as "3,5 MHz" for the 80 meter filter, for example. Their permanent demarcation allows immediate identification, preventing any future trouble with faded or missing printed labels. Supplied only with standard UHF Female/SO-239 connectors, these HF Transmit Band Pass Filters achieve over 60 dB of out-of-band suppression that virtually eliminates out of band noise and interfering signals. They are designed to provide a sharp roll off just outside each Amateur band; just below 3.5 MHz and just above 4.0 MHz for the 80 meter filter for example. Low Band Systems filters are the first choice of major multi-multi contest stations around the world! They provide the clear benefit of a dramatically lower noise floor for enhanced single-band weak signal reception desired for elite contest and Field Day operations. Low Band Systems Band Pass Filters are used in conjunction with their multiplexers, also known as multi-band transmit combiners. Low Band Systems Diplexers, Triplexers, Quadplexers and Pentaplexers, also available from DX Engineering, provide good levels of isolation between band ports, but band pass filters are also needed for multi- transmitter operation. This is because the multiplexer's main purpose is to balance the impedances for the multiple-transceiver/single multi-band antenna stations. They provide UHF Female/SO-239 connections for multiple 50-ohm transceivers to be connected to a single 50-ohm feedline. So, band pass filters are REQUIRED for each multiplexer band input to provide the additional isolation required to allow multiple transceiver setups to work. The transceivers for each band are connected to their associated band pass filter, and then to the multiplex device such as a triplexer, which is connected to a tri-band beam, for example. All transceivers can operate simultaneously with up to 80 dB of isolation, unhindered by the signals from the other connected radios operating on the other bands on the same antenna! Achieve the advanced operational advantages that these exceptional filters and multiplexers provide. Order Low Band Systems HF Transmit Band Pass Filters from DX Engineering! NOTE: Filters made for 160 meters are 2.0 MHz low pass models to prevent harmonics on higher bands. They do not reject frequencies below 1.8 MHz. If AM broadcast interference is a problem, an additional BCI filter should be used. After better antennas, these filters are suggested as the most important multi-radio station upgrade by top contest station builders and operators. Low Band Systems HF Transmit Band Pass Filters simply allow more contacts to be made with worldwide DX stations and DXpeditions.
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$359.99
$269.99
RF Meca 1.25 Meter Low Pass Filters
RF Meca 1.25 Meter Low Pass Filters helps to prevent spurious emissions outside of the 1.25 Meter band. These high-quality low pass filters suppress second harmonics of your fundamental frequency at -64 dB and third harmonics at an impressive -90 dB, meaning that very little outside of your fundamental frequency will be blocked, ensuring that you are transmitting a clean signal. These Low Pass Filters are rated for up to 2000 watts CW and feature N-female connectors resulting in an insertion loss of just -0.15 dB and a return loss of -30dB. Features: Frequency range: 220-223.4 MHz Power rating: 2000 watts CW (continuous) Return Loss: -30dB H2/H3: -64/-90 dB
Not Yet Reviewed
$439.99