Hi All Does anyone have info about the HEATHKIT AMP SB221. Cover 80 - 10 metres. Mods for 160 m, cct details etc I have tried the internet but cannot get a hit on this amp. 73 de Mal/G3KEV
Hi Mal, The SB-221 was a latter-day version of the SB-220 (I think the only significant difference was that 10m was hard to enable, following the FCC's anti-CB ploy). Search for SB-220 instead. You s