FOR SALE: 1. Heathkit SB-303 SSB Crystal Filter, P/N 404-283 $35.00 2. Heathkit SB-104 S-meter, P/N 407-187, new in box, $20.00 3. Heathkit Signal Tracer, model T-3 with probes and manual $50.00 Please add shipping and CONUS sales only, please. I prefer payment by USPS money order. 73’ Dan KO4RA