[Elecraft] KRX3 Issue - Jumper W4

[Jim Denneny]

I could not get KRX3 or Main to RX after KRX3 install.  After checks and rechecks with Rene of Elecraft, we discovered the W4 jumper had not been removed.

Now here is the "gotcha".  Manual shows jumper across two pins of a connector.  I saw none and moved on.  My RF board is a Rev A.  The KBPF3 module mounts over the top of the RF board.  Guess what? The KBPF3 board covers the W4 jumper which is soldered to the RF board.  Cut the jumper and RX comes alive.  

I wish to thank Rene for his exemplary support.  He called me on a SUNDAY and spent hours on the phone sleuthing this problem.  Do you think K-I-Y would help you like that on Sunday?

Jim
K7EG