Magic Band 6m 50-54MHz Economical Band Pass Filter

Put this 6m 50-54MHz Economical Band Pass Filter on the receiving side before any SDR or wideband receiver. You will be surprised how this filter cleans everything except 6m such as signals from HF stations, 4m, FM, 2m, or 70cm.

 

6m 50-54MHz Economical Band Pass Filter appearance:

 

Measured data on the assembled 6m 50-54MHz Economical Band Pass Filter:

1.8 MHz < -100 dB
3.8 MHz < -100 dB
7.1 MHz < -89 dB
14.15 MHz -71 dB
21.2 MHz -58 dB
28.4 MHz -47 dB
50 MHz -0.4 dB
52 MHz -0.4 dB
54 MHz -0.55 dB
70 MHz -38 dB
70.5 MHz -39 dB
88 MHz -66 dB
98 MHz -68 dB
108 MHz -64 dB
144 MHz -55 dB
146 MHz -54 dB
288 MHz -38 dB
432.1 MHz -44 dB
440 MHz -38 dB

These excellent results were achieved by careful selection of components and design of the filter.

 

6m 50-54MHz Band Pass Filter 6m signal pass and 4m attenuation

 

6m 50-54MHz Economical Band Pass Filter HF attenuation:

 

50-54MHz Economical Band Pass Filter harmonics and UHF attenuation:

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