[Elecraft] K2 KAT2 Lo P

David Woolley (E.L) forums at david-woolley.me.uk
Sun Apr 6 06:39:07 EDT 2008


Clark Macaulay wrote:
>    
> I think the KAT2 is acting wierd. When to to TUNE with a dummy load,
* the display flashes in sequence ATU, then 10:1, then Lo P. If the KAT2
* is in CAL P or CAL S to bypass the little critter, the same three
* messages occur.

The classic cause of this is trying to tune in the CW test mode.  Even 
when you have an SSB mode selected, CW test mode still inhibits power 
when the tune button is pressed.

>    
> In the ATU mode, when I rotate amongst the various, I do NOT hear
* relays clicking in N1, N2, or CAL P. Is this normal? Relays do click in
* all the C and L settings as well as for AUTO.

The relay clicking is based on the transitions, so it depends on in 
which direction you went through the settings.  Going clockwise, I don't 
get any changes between CAL S and CAL P, which is reasonable as they are 
both straight through configurations. I do get transitions going into 
net1 and net2.

No click between net1 and net2 suggests a problem with K17 or its relay 
coil drive.

>    
> It looks like the KAT2 is not even trying to tune to the dummy load
* unless the reset position for all relays is 50 ohm. I've tried this at
* 5w and for all the bands.

The reset position is the last remembered one for the band and antenna, 
so, if you last used the dummy load on the band and antenna, you would 
not expect any activity, as the reflected power will already be low enough.



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