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> Mfj cwf-2 active audio cw filter with mods
Mfj cwf-2 active audio cw filter with mods
This is MFJ's very first product that they ever mass produced or so I'm told. It is a fine working CWF-2 active audio CW filter and boy does it work great! Has three bandwidths of 180, 110 and 80Hz. Runs on an internal 9v battery (included). No paperwork but it's pretty straight forward on the operation. Center frequency is about 700Hz. The added jack and pot are for an external speaker and volume for the speaker. Everything else works as it should. This filter came with an OHR-500 QRP transceiver. The resistor on the input is simply and input level PADDER so can be removed if not desired or needed.
