[Elecraft] PX3 Problem?

[Dave Sublette]

Good point.  However I am on 20 meters, which really doesn’t need the preamp.  Besides, the spikes are 40 dB high or so.  No, this behavior is definitely looking like a failure.  I have one more thing to try.  I will carry it out to the shop in my garage and plug it in.  If it is the same there as in here, it’s not any external influence.  Thanks for hanging in there with me.

73,

Dave
> On Jul 16, 2017, at 9:56 PM, Dale Boresz <dmboresz at gmail.com> wrote:
> 
> Dave, make sure that the preamp is engaged on your KX3. If the preamp is off and you are receiving on a quiet band, you'll see "stuff" that would normally be covered by the band noise. Turn on the preamp, and the artifacts that you're seeing should be pushed below the noise floor of just about any band. 
> 
> 73, 
> 
> Dale - WA8SRA
> 
> 
> On Sun, Jul 16, 2017 at 6:06 PM, Dave Sublette <k4to at arrl.net <mailto:k4to at arrl.net>> wrote:
> I have had my PX3 for a little over a year (I think).  It has been used sparingly.  Until this afternoon, it has worked perfectly.  Now I see a spike in the center of the display and periodic spikes across the entire screen. Almost all are symmetrical in frequency and amplitude about the center line. There are some that are not symmetrical.  I have plugged and unplugged all the cables, taking care to see that each is fully into the socket.
> 
> So, perhaps I have a failure that requires returning to Elecraft?  Have any of you had the same experience?
> 
> 73,
> 
> Dave, K4TO
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft <http://mailman.qth.net/mailman/listinfo/elecraft>
> Help: http://mailman.qth.net/mmfaq.htm <http://mailman.qth.net/mmfaq.htm>
> Post: mailto:Elecraft at mailman.qth.net <mailto:Elecraft at mailman.qth.net>
> 
> This list hosted by: http://www.qsl.net <http://www.qsl.net/>
> Please help support this email list: http://www.qsl.net/donate.html <http://www.qsl.net/donate.html>
> Message delivered to dmboresz at gmail.com <mailto:dmboresz at gmail.com>