6 meter Band Pass Filter 1.5 kW with Extreme Low Loss
50 MHz Band pass Filter BPF uses high Q coils and capacitors with Q more than 4000. Low loss of the filter is achieved with careful design and adjustment.
Intended to be used with linear amplifiers 8877, GS35, GS31, 2xGI7B and with other tubes up to 1.5 kW output.
Although this filter is intended to be used as a transmitting filter, its design also allows it to be used as a receiving filter. It can be used before Wide Band LNA with PGA-103+ to protect sensitive device from strong out-of-band signals.
Low Insertion loss filter is excellent to be placed before any LNA to protect the receiver from HF transmitters in DX expeditions or in multi-multi environment. This BPF will suppress any harmonic on 100 MHz, 150 MHz and more, and it will protect it from HF stations.
The recorded data on the assembled filter with HP8753ES full 2-port calibrated are presented below.
Measured Return Loss – S11 (CH 1) and Insertion Loss – S21 (CH 2). Characteristics of 50 MHz Bandpass filter for up to 1500 W transmitter.
Achieved results on build Band-pass Filter (Attenuation) |
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HF Band
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Bandwidth: 50 – 51 MHz
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FM attenuation
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144 MHz / 432 MHz Band Attenuation
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All band-pass filters are here: HF, VHF and UHF Band-Pass Filters
Direct link to all 6 meter filters. We have 50 W, 100 W, 200 W, 300 W, 1500 W and 4000 W versions: 6 Meter Band-Pass Filters
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