Help K3 KAT3 No readout no tx carrier

[Christopher Soames]

Help needed by myself a self confessed technical idiot.
Hi All I am having a problem with my K3 when I built it last December I
did so with the KAT3 auto tuner built in.
It has worked fine for me since then until about a week ago when for
some reason it changed its mind.
Now when I press ATU TUNE button on the front of the K3 the following
happens ,,
  the KAT3 whirrs and clicks like it is tuning but I no longer get the
SWR readout on the screen instead I get 2 -- marks also when I TX the
rig TxX light illuminates red but apparently no carrier is TX'd.

I have tried several time to call colleagues that I know can usually  
hear me, I have heard them but they are no longer RX'ing me.
I have searced the manual but can find no symptom in it let alone a cure
so guys I am open to suggestions.

Yes the KAT3 is set to Auto.
Yes it makes all the right noises.
Yes I have tried different antenna's.
Yes I have tried different Coax's.
Yes I have tried resetting the KAT3 and waiting the 5 second however
after doing so nothing seems to happen at all
Yes I have tried both Ant 1 and Ant 2.

It just don't seem to work.

Chris
G0TZZ
In desperation.
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[Don Wilhelm-4]

Chris,

First simplify your setup by eliminating the antenna from the equation.
If you have an in-line wattmeter, connect it between the K3 and the
dummy load.
Do an ATU TUNE - make sure you have the correct ANT selected.
What do you see for the SWR?
When you transmit, what do you see for the power output?

If you can tune into a dummy load, and the power output is close to the
power setting on the K3, then you can look to your antenna system for
your answers, but if you get "crazy" results into the dummy load, first
check the coax between the K3 and the dummy load, and then blame the K3.

73,
Don W3FPR

On 7/22/2011 3:38 PM, Chris Soames wrote:

> Help needed by myself a self confessed technical idiot.
> Hi All I am having a problem with my K3 when I built it last December I
> did so with the KAT3 auto tuner built in.
> It has worked fine for me since then until about a week ago when for
> some reason it changed its mind.
> Now when I press ATU TUNE button on the front of the K3 the following
> happens ,,
>    the KAT3 whirrs and clicks like it is tuning but I no longer get the
> SWR readout on the screen instead I get 2 -- marks also when I TX the
> rig TxX light illuminates red but apparently no carrier is TX'd.
>
> I have tried several time to call colleagues that I know can usually
> hear me, I have heard them but they are no longer RX'ing me.
> I have searced the manual but can find no symptom in it let alone a cure
> so guys I am open to suggestions.
>
> Yes the KAT3 is set to Auto.
> Yes it makes all the right noises.
> Yes I have tried different antenna's.
> Yes I have tried different Coax's.
> Yes I have tried resetting the KAT3 and waiting the 5 second however
> after doing so nothing seems to happen at all
> Yes I have tried both Ant 1 and Ant 2.
>
> It just don't seem to work.
>
> Chris
> G0TZZ
>

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Elecraft mailing list
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Help: http://mailman.qth.net/mmfaq.htm
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Please help support this email list: http://www.qsl.net/donate.html