Re: [Elecraft] [PX3] Does not respond to the knob being rotated

Hi Brian, The PX3 encoder interface was changed in revision 1.25 (4/17/2015). This change greatly enhanced the operation of the select knob encoder. If you're experiencing severe 'jerkiness' of the encoder, it's usually a sign that the encoder is bad. It would however be interesting to see

Re: [Elecraft] [PX3] Does not respond to the knob being rotated

Hi Jim, It sounds to me like your encoder is bad. You will either need to send your PX3 back to Elecraft for repair or contact Elecraft for a replacement encoder (if you would like to do the work yourself). Please contact Elecraft support directly. They can be reached via email at:

Re: [Elecraft] [PX3] Does not respond to the knob being rotated

I will pile on and corroborate Steve's observations. I too have noticed the same behaviour on my PX3. I don't use the knob all that often. While I can't rule out a mechanical problem, I did notice this slow versus fast knob-turning behaviour after I loaded in one of the PX3 firmware updates. It

Re: [Elecraft] [PX3] Does not respond to the knob being rotated

It's the same behavior, whether you move the knob slow or fast, kind of like one of the channels on the encoder is being lost. Elecraft told me I need to send it in to be repaired. Jim/KA2RVO On Tue, Oct 18, 2016 at 5:55 PM, Steve wrote: > I have seen a similar issue

Re: [Elecraft] [PX3] Does not respond to the knob being rotated

Steve, Just another data point ... My PX3 exhibits the same behavior in a system that includes the KXPA100. I see it happen when I twist the KX3's OFS knob to quickly QSY. However, if I turn OFF the the KXPA100 via the KX3 "PA MODE" menu option, the PX3 responds immediately to a twist of the KX3

Re: [Elecraft] [PX3] Does not respond to the knob being rotated

I have seen a similar issue with my PX3 but it may not be the same or it may be related to the root of the problem. What I notice is what "in the old days" would be switch bounce. What I notice (like you) is when I turn the knob fast the value bounces around but doesn't go anywhere. I find

[Elecraft] [PX3] Does not respond to the knob being rotated

My PX3 no longer responds to the knob being turned. The only indication I see when turning it is when the marker frequency is being displayed. When turning the knob, the displayed marker frequency bounces back and forth between something like 14.050.80 and 14.050.85. The PX3 is otherwise