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

2016-10-19 Thread n6hz
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 what your PX3 would
do with older firmware.  Email me directly if you'd be interested in trying
that out.  My email is pauls at you know where dot com.

-Paul 



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

2016-10-19 Thread n6hz
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:  k3support at
you know where dot com. 

Kindly, 

Paul




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

2016-10-19 Thread Brian Waterworth
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 was likely the second to last firmware update currently available, but I
can't recall specifically which firmware update.

regards,
Brian
VE3IBW

On Tue, Oct 18, 2016 at 6:55 PM, Steve  wrote:

> 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 that if I turn the knob real slow it will
> work.  The knob is an encoder and must be seeing  CW/CCW pulses out of sync
> or something like that?
>
> Does slow work?
>
> steve WB3LGC
>
>
> On 10/16/2016 12:34 PM, James Austin wrote:
>
>> 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 functional.
>>
>> Any suggestions? I opened it up and all the solder connections for the
>> encoder are solid.
>>
>> 73,
>>
>> Jim/KA2RVO
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Re: [Elecraft] [PX3] Does not respond to the knob being rotated

2016-10-19 Thread James Austin
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 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 that if I turn the knob real slow it will
> work.  The knob is an encoder and must be seeing  CW/CCW pulses out of sync
> or something like that?
>
> Does slow work?
>
> steve WB3LGC
>
>
> On 10/16/2016 12:34 PM, James Austin wrote:
>
>> 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 functional.
>>
>> Any suggestions? I opened it up and all the solder connections for the
>> encoder are solid.
>>
>> 73,
>>
>> Jim/KA2RVO
>> __
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>>
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Re: [Elecraft] [PX3] Does not respond to the knob being rotated

2016-10-18 Thread Dale Boresz
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 OFS knob. If I turn the KXPA100
"ON" again, a quick turn of OFS results in the original sluggish PX3
response. Perhaps communications between the KX3 and the KXPA100 is at a
higher priority than between the KX3 and the PX3.

73,

Dale - WA8SRA



> 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 that if I turn the knob real slow it
> will work.  The knob is an encoder and must be seeing  CW/CCW pulses out
> of sync or something like that?
>
> Does slow work?
>
> steve WB3LGC
>
>
> On 10/16/2016 12:34 PM, James Austin wrote:
>> 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 functional.
>>
>> Any suggestions? I opened it up and all the solder connections for the
>> encoder are solid.
>>
>> 73,
>>
>> Jim/KA2RVO
>> __
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>>
>
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Re: [Elecraft] [PX3] Does not respond to the knob being rotated

2016-10-18 Thread Steve
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 that if I turn the knob real slow it 
will work.  The knob is an encoder and must be seeing  CW/CCW pulses out 
of sync or something like that?


Does slow work?

steve WB3LGC


On 10/16/2016 12:34 PM, James Austin wrote:

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 functional.

Any suggestions? I opened it up and all the solder connections for the
encoder are solid.

73,

Jim/KA2RVO
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