Availability
Transmit Band Pass Filters
DX Engineering HF QRP Bandpass Filters
DX Engineering HF QRP Bandpass Filters are designed to tightly confine both transmitted and receive signals to one specific Amateur band, these filters significantly reduce out of band noise, resulting in a noticeably lower noise floor and improved weak signal reception. In multi operator contest or portable operations, they deliver the essential isolation needed to eliminate image and harmonic interference, ensuring clean mono band performance even in close quarters environments. Each filter features a sharp roll off just outside the band edges, providing exceptional rejection of adjacent band signals and maintaining maximum operating efficiency for QRP applications. Offered for the 80, 40, 20, 15, and 10-meter amateur bands, they install easily in line with the coax feedline using the BNC connectors provided on each end. With power ratings of 20 watts SSB and 5 watts digital, they are ideal for QRP enthusiasts participating in multi operator events such as Field Day, POTA, and SOTA.
Not Yet Reviewed
$69.99
SOTAbeams Bandpass Filter for 2 Meters
SOTAbeams Bandpass Filter for 2 Meters is made by SOTAbeams for the top of a handheld transceiver that is being used in areas with high RF levels with multiple transmitters. In these places, the HT (Hand-Talkie) can suffer from front end overload and signal blocking. This bidirectional bandpass filter can prevent that out-of-band signal overload. It is completely assembled into a very lightweight nylon case and is ready for use. It has SMA female connectors at each end and can be adapted to any low power 144-148 MHz radio or antenna. Here are the detailed specifications for the SOTAbeams Bandpass Filter for 2 Meters: Power Rating: -FM/DATA, 5 watts max., 2 watts continuous, (30% duty cycle recommended, max. continuous TX approx. 90 seconds) -SSB, 5 watts PEP max continuous Filter Bandwidth: 144 - 148 MHz Filter Attenuation: -In-band typically < 3dB -433 MHz > 70dB -155 MHz approx. 25dB -FM broadcast band >70dB -Air band > 50 dB Temperature Range: 32-122 degrees F (0 – 50 degrees C) Weight: 0.88 oz. (25 g) Dimensions: 1.77 x 0.79 x 0.71 in. (45 x 20 x 18 mm)
( 2 )
$77.99