[Elecraft] Interfacing Ke with MFJ929?

[Brian Hunt]

I have a MFJ-927 which is probably the same circuit board in a different, water resistant box. It's powered over the coax with a bias-T. It's set up to automatically tune when it sees RF. I give it about 5 watts of "TUN PWR" and it finds a match, usually pretty easily. Sometimes it's. Little flakey and seems to depend on where it's tuning from. You can watch it tune on the K3 display and see what it arrives at. 

I use the 927 on 80-30m with a 92 ft doublet, 450 ohm window line and a 1:1 choke balun. SWR < 1.5:1 most of the time. Helps keep the losses in 130 ft of coax under control. 

73,
Brian, K0DTJ