Second Hand Icom IC-7610 HF SDR Transceiver, The Icom ic-7610 SDR hf/50mhz transceiver, whether it is poor band conditions, or battling to pick out a call in a large pile-up, faint signals have always been a challenge for dxers and contesters around the world. The difference between putting the QSO in the log or trying another time is your receiver's capability. One key factor is the rmdr capabilities, the ability to pick out a faint signal in the presence of stronger, adjacent signals. The ic-7610 introduces dual rf direct sampling receivers, achieving 110db rmdr, rivalling that of top-of-the-line transceivers. Innovative rf direct sampling system achieves 110db (typical) of rmdr at 2khz frequency separation.