[Elecraft] KX3 tuner getting stuck at 25.4:1 SWR

[Walter Underwood]

25.4:1 SWR is what the KX3 reads for a short or an open, if I remember correctly.

Agreed, open it up, make sure everything is tight, include the ribbon cable.

wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)

> On Apr 17, 2017, at 11:20 AM, Don Wilhelm <donwilh at embarqmail.com> wrote:
> 
> Nate,
> 
> Since the problem is intermittent, I would not suspect a problem with an active component.
> 
> You might want to remove the bottom cover and check to be certain the hardware on the BNC jack is tight and the LPF on the BNC connector is properly positioned.  You may have to lift the KXAT3 to check - see Figure 43 of the KX3 Kit Assembly Manual.
> 
> 73,
> Don W3FPR
> 
> On 4/16/2017 4:55 AM, nate t wrote:
>> Hi,
>> I was working with my KX3 earlier today, RX only, using an endfed, while running on batteries, RXing WSPR and PSK31.
>> After running for a bit, the ATU seemed to stop working. Attempting to retune on 40m, it would stick at a 25.4:1 SWR.
>> Tried switching down to 20m and it retuned right away to a 1.3:1. Applying external power to the unit, I tried tuning again on 40m (battery was reporting 10V if I recall correctly); It then tuned the end fed up, but only to a 1.7, which it will typically match to a 1.0:1, it would also get stuck at the 25.4:1 SWR on some of the attempted tunes.
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to wunder at wunderwood.org