[Elecraft] K3-100 #1433: K3 ATU MALFUNCTION

[Jack Regan]

Greetings to all,

 

Here is the text of a note I sent to k3support.  I hope someone has some
ideas.

On Saturday the 16th I noticed that the ATU gave a higher SWR than bypass
when transmitting to a resonant antenna. The difference was small so I
thought I would just note it and observe.

 

Today, Sunday the 17th I found that on 14.050 in bypass mode at 14.050 I get
a 1.1 to 1 reading but in ATU mode I get higher that 2 to 1 and a HI SWR
message.

On 7.050 I get 1.0 to 1 in bypass and 1.4 to 1 in ATU mode. 

 

This is a change from when the rig was first built on Friday the 8th.
Originally if I had 1.1 in bypass I would get 1.0 in ATU mode.

 

Help! I thought I was up and running after a week of problems and now a new
one! Any suggestions would be appreciated.

 

Jack