For Sale... Heath extender board - SOLD UNBUILT Heath IM-4100 frequency counter - Best offer UNBUILT Heath HD-1982 DTMF hand mic - Best offer Heath HW-104 hf rig (no pwr supply) $150 US ***Will consider trades for a HP-24 power supply (used on a HA-14 amp) Pictures available, shipping extra. 73 Mike VE3MKX / VA3HKT