[Elecraft] K1 KAT1 ATU is ending w/P L O

[Don Wilhelm]

Petr,

LO P indicates Low Power, and if the actual power output is less than 
1.5 watts when a TUNE is done, that is the message that will be displayed.
When that happens, it is quite likely that the antenna tuning did not 
complete correctly.

The first course of action is to check the menu OUT parameter to see if 
it is 1.5 or greater, and do another TUNE.
If that does not correct it (eliminate the message), then there may be a 
fault with the K1 which is causing low output power.
In that case, after setting the OUT parameter and trying the TUNE, check 
the OUT parameter again - if it has been changed to something lower than 
what it was set to, that is an indication that the K1 is not capable of 
producing the proper power output.  The OUT parameter will be reset to 
the actual power output.

One thing that should be checked before doing the above is to make 
certain the jumper on the 3 pin header next to the BNC jack is set 
correctly.  With the KAT1 installed, it must be in the KAT position in 
order for the MCU to properly measure the power output.

73,
Don W3FPR


On 5/18/2015 7:07 AM, ok1rp wrote:
> Hi all,
>
> I am sorry to bother you over here...
>
> My daddy Jul, OK1SP is using intensively K1 these days (until his K2 light
> repairing will be finished by myself) and he reported to me last week that
> his K1 is showing P L O after KAT1 tunning sequence on some bands.
>
>