I have for sale a new-in-box (unused) PR6 6M preamp for the K3. I converted the transceiver over to the PR6/10/12 and this item is surplus to my needs. The PR6 E850347 6M preamp comes with two 31-218-RFX male-to-male BNC adapters, and the E85034B power cable assembly. $95 shipped CONUS 73 Bill N4LG