For Sale - Heath Model HRA-10-1 Plug in 100 Khz Calibrator. This unit
uses a 6BA6 tube with a 100 khz crystal and plugs into the optional 8
pin socket on the HW-12 type series mono band SSB transceivers and
several other Heath tube type rigs.

$28.85 which includes priority postage.

73 Bob W7AVK