[Elecraft] KAT500 Re-Tuning

[Jim Brown]

On Sat,11/14/2015 8:37 PM, Byron Peebles wrote:
> I will put the antenna analyzer on it tomorrow and make sure it's 
> still solid after all this wind.

Other suggestions. First, put it on bypass and see what the SWR 
indication is. If it's reasonable, go to MAN mode, force a tuning (put 
K3 in TUN mode) and let it tune.

Carefully check the entire coax path between K3 and the antenna. All 
connectors should be finger tight, then tighten with gas pliers.

Any indication that the coax is wet? Moisture entering anywhere along 
the run will usually migrate all the way down to the lowest point. Open 
connectors to see if there's any moisture. A good way to test is to use 
a tissue or paper towel as a probe.

If you have TDR capability, look at the feedline for any 
discontinuities. You should see connectors, the antenna, and any 
switching between the antenna and your test point. Most vector analyzers 
can do TDR. If you don't have one of them, ask around your ham neighbors 
to borrow one (and ask them to help you do the measurement).

73, Jim K9YC