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6 Results Found For "preamp"
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
QRO.cz OLI 12 IP-Based Station Controllers
QRO.cz OLI 12 IP-Based Station Controllers are compact web-controlled IP relay controllers designed for seamless integration with K9AY++, 4-WAY beverage antenna systems, and 7ANT remote antenna controllers. Housed in a rugged aluminum enclosure, these controllers offer 12 positive-voltage outputs with built-in electronic fuse protection, making them ideal for remote antenna switching, preamp control, and band-pass filter selection. With a web-based user interface, support for Node-RED, Stream Deck, and Touch Portal, the OLI IP Controllers enable intuitive and flexible station automation. They connect via a standard DB15 cable and LAN port, requiring no firmware uploads or complex configuration—just plug in and go.
Not Yet Reviewed
$258.99
QRO.cz OLI 16 IP-Based Station Controllers
QRO.cz OLI 16 IP-Based Station Controllers are compact, universal web-controlled IP relay controllers housed in a rugged aluminum enclosure, these controllers offer 16 positive or negative (GND) voltage outputs with built-in electronic fuse protection, making them ideal for remote antenna switching, preamp control, and band-pass filter selection. With a web-based user interface, support for Node-RED, Stream Deck, and Touch Portal, the OLI IP Controllers enable intuitive and flexible station automation. They connect via a standard DB25 male cable and LAN port, requiring no firmware uploads or complex configuration.
Not Yet Reviewed
$271.99
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 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 6550 70cm 2500W Band Pass Filters
Antennas-Amplifiers 6550 70cm 2500W Band Pass Filters are extreme power 70cm band pass filters engineered to handle the most demanding UHF stations. Designed for operation across the 430–450MHz amateur band, these filters support RF power levels up to 2.5kW, making them suitable for high power stations and commercial grade 70cm linear amplifiers. Despite their high power capability, the 6550 series achieves an exceptionally low insertion loss of just 0.06 dB, and with the integrated 12VDC cooling fan, they maintain efficient signal transfer while keeping thermal rise to a minimum even during continuous high power operation. Installed after a powerful amplifier, the filter provides outstanding suppression of unwanted emissions—attenuating lower frequency signals by 23 to 100dB and reducing harmonics by 26 to 60dB, depending on frequency. Thanks to its ultra low loss and clean passband, the 6550 also performs exceptionally well in receive only applications. It can be used ahead of sensitive low noise preamplifiers employing ATF, PGA, SAV, or SKY devices, offering overload protection without degrading noise performance.
Not Yet Reviewed
$534.99