Should have searched on Nabble first.  Finally found some discussion of this 
PX3 cursor lag issue when running a KXPA100 back in 2017.

Elecraft apparently recognized it as a bug, and talked about a fix, but I guess 
nothing has been forthcoming.

Grant NQ5T
KX3 (8342)/KXPA100


> On Aug 18, 2019, at 7:07 PM, Brian Hunt <[email protected]> wrote:
> 
> Just out of curiosity, is the serial speed set to 38400?  Running slower 
> would make a difference. 
> 
> 73,
> Brian, K0DTJ
> 
>> On Aug 18, 2019, at 15:41, Grant Youngman <[email protected]> wrote:
>> 
>> I fiddled with it a bit, and really didn’t notice any major changes in how 
>> the PX3 controls function.  Not that there aren’t any.
>> 
>> The simple solution is to simply set PA Mode: Off when generally tuning 
>> around.
>> 
>> Grant NQ5T
>> KX3 (8342)/KXPA100
>> 
>> 
>>> On Aug 18, 2019, at 5:30 PM, Donald Wines <[email protected]> wrote:
>>> 
>>> Grant,
>>> 
>>> Something else I've noticed since getting the KXPA100 is the Select knob on 
>>> the PX3 gets flaky if it's turned too fast. It seems to work fine if you 
>>> turn it slowly. For instance when setting the Ref Level if the Select 
>>> control is turned very fast the display just jitters and doesn't change the 
>>> level. But when turned at a very slow rate the level changes appropriately. 
>>> I didn't notice this behavior before I put the KXPA in line.
>>> 
>>> You might try that and let me know what happens.
>>> 
>>> Thanks,
>>> Don, K5DW
>> 
>> ______________________________________________________________

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