Hi, I have a E-tek FR-4 frequency readout/counter designed for the Drake R4/T4 series now excess to my needs available. The unit is in excellent cosmetic/operating condx and comes with the original manual. My price is $225 shipped/insured to the CONUS OR I will trade for a Drake R-4B or R-4C. Tnx for reading, 73, Joel AE2JL