The original filters had a very high impedance whereas the new series are 2000 ohms. The resulting signal level through the adapter board is very close to that of the original filters. The adapter is constructed on a double sided FR4 pc board with plated through holes. Surface mount components are used in the production units. The board contains pads for through hole components which can be supplied for special uses.
Installation consists of plugging the adapter, assembled with the filter of choice, into the radio.
Mode CW CW SSB AM Center Freq. Comes on custom pc board. All Rights Reserved.