[Elecraft] Re: Lo P ATU -- help!

[Wayne Burdick]

Bill,

The Lo P message usually means that the KAT2 is working into a very low
impedance load--so low that it can't develop sufficient voltage to
accurately measure the SWR. If this is the case, your mag mount or its
coax may have changed in some way that affects these two bands. 

Since Lo P could also indicate that the power output was too low from
the K2, you should check output on 15 and 17 meters into a dummy load.
There are some filters in the K2 that are shared on these two bands, so
it may be more than a coincidence that they're the only ones affected.

If 15 and 17 meter output seem OK and the antenna does, too, try the
troubleshooting procedure in the KAT2 manual. You may have lost a
component or relay. We included menu entries for all 8 inductors and
capacitors, allowing you to step through them individually and make sure
each has the expected effect on SWR when working into a dummy load.

73,
Wayne
N6KR


WA5PB wrote:
> 
> Hey Gang,
> 
> I am in need of some assistance.  Today, while taking the K2 mobile I have
> experienced a little problem.  My standard mobile operation with the K2 has
> always consisted of the K2 w/ its ATU running into a 10m mobile magmount
> whip.  Up till today, I have been able to tune at least 10-20 and often 40
> using the ATU without any error displays.  Today, while trying to tune on
> both 15 and 17 meters I keep getting at Lo P reading while I hit TUNE.....