Nine band-pass bandpass filter for shortwave transceiver / receiver 1-30 MHzSwitching ranges is made by a decoder (CD4028) which supports almost all frequency synthesizers.The boar..
Octave band bandpass filter for the direct conversion transceiver "Pilgrim". The card offers a UHF (PRE) and ATT (attenuator). Managed by the synthesizer for DC transceive..