QRPGuys 40/30/20m DSB Digital Transceiver Kit – Retired   Bare board set (main board and 3 module boards) are still available for $10 a set     This kit has been retired and replaced by the new QRPGuys 40/30/20m DSB Digital Transceiver II Kit. It is improved and the same price as the original. Click … Continue reading QRPGuys DSB Digital Transceiver Kit