Nine band-pass bandpass filter for shortwave transceiver / receiver 1-30 MHz

Switching ranges is made by a decoder (CD4028) which supports almost all frequency synthesizers.

The board has an attenuator with a -20 dB attenuation and a pre-amplifier of +20 dB

The attenuation in the pass band of the filters is -9 dB on the average

To switch the filters, use the PIN diodes BAR64


Overlapped filter frequencies

Band - Bandwidth in the range - Attenuation in the bandwidth of -3dB

160m - 400 KHz (~1,7-2,1 MHz) - (-9dB)

80m - 470 KHz (~3.4-3.9 MHz) - (-7dB)

40mz - 1.48 MHz (~6.4-7.9 MHz) - (-7.5 dB)

30m - 1.12 MHz (~9.5-10.6 MHz) - (-7 dB)

20m - 1.15 MHz (~13.6-14.8 MHz) - (-10 dB)

17m - 1.12 MHz (~17.7-18.5 MHz) - (-10 dB)

15m - 1.18 MHz (~20.5-21.7 MHz) - (-10.5 dB)

12m - 2.3 MHz (~23.8-26.1 MHz) - (-9 dB)

10m - 2.38 MHz (~27.6-30.1 MHz) - (-9.6 dB)



The size of the board is 100x50mm

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Finished modules - 9 Bands BPF R1

  • Product Code: bpf-r1
  • Availability: In Stock
  • $50.00


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