Is the RV-3 Remote VFO compatible with the TR-4? +-++-++-++-++-+ John L. Sielke |W||2||A||G||N| http://www.w2agn.net [UPDATED] +-++-++-++-++-+ Ex-K3HLU,TF2WKT,W7JEF,W4MPC,N4JS