2 meter Receiving Band Pass Filter with High Q Components to Achieve 144 MHz to 146 MHz Super Low Loss
2 meter Band pass filter uses high Q coils with unloaded Q of more than 1000, and capacitors with Q more than 1200. Low loss of filter achieved with careful design and adjustment. Best receiving RFI band-pass filter for Ham Radio designed for 2 meter band.
Achieved results on a built Band pass filter:
50 MHz = -68.4 dB
88 MHz = -45.6 dB
108 MHz = -31.5 dB
144 MHz = -0.21 dB
146 MHz = -0.21 dB
432 MHz = -75 dB
These excellent results were achieved by careful selection of components and design of the filter.
Outdoor version + 9EUR
Measured Return Loss – S11 (CH 1) and Insertion Loss – S21 (CH 2). Characteristics of 144 MHz Receiving Bandpass filter.
1. Filter characteristics ”zoomed”.
2. Measured data of 144 – 146 MHz RFI band-pass filter. Insertion loss – S21 (Attenuation) is set to 0.3 dB per division!
Feel free to send e-mail if you need something more specific.
All band-pass filters are here: HF, VHF and UHF Band-Pass Filters
Direct link to all 2 meter filters. We have 50 W, 100 W, 200 W, 300 W, 1500 W and 4000 W versions: 2 Meter Band-Pass Filters
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