Looking for a 3.75 or 5 Khz Heath AM filter for a friend. Anyone one have one they are willing to part with? Thanks, 73, Mark WB8JKR Novice 3/71, General 8/72, Advanced 6/80, Extra 8/88 Member Society of Cable Telecommunication Engineers Member ARRL, QCWA, WAC, WAS, DXCC, VUCC 2 meters, GJDXCC, OTC, RCC