[Elecraft] P3 SPAN Instability

Victor Rosenthal 4X6GP k2vco.vic at gmail.com
Sun Mar 10 13:13:42 EDT 2019


I've never had any trouble with REF LEVEL, but it can't hurt to try the 
save / reset / restore routine and see if it helps.

73,
Victor, 4X6GP
Rehovot, Israel
Formerly K2VCO
CWops no. 5
http://www.qsl.net/k2vco/


On 10/03/2019 18:14, Dave Cole (NK7Z) wrote:
> I am seeing something similar to this as well...  Not in SPAN, but in
>  REF LVL.  I set REF LVL while on 30 Meters, and leave the band. 
> Ssometimes when I return to 30, I need to touch the REF LVL level to
> get it to return...
> 
> By touch, I mean I select REF LVL, then just turn the knob ever so 
> slightly.  The P3 then reverts to where it should be...
> 
> P3 with SVGA, and power monitor.  Only on 30 meters...  Any
> suggestions?
> 
> 73s and thanks, Dave (NK7Z) https://www.nk7z.net Award Manager, 30MDG
> Grid Awards ARRL Technical Specialist ARRL Volunteer Examiner ARRL
> OOC for Oregon
> 
> On 3/10/19 8:06 AM, Victor Rosenthal 4X6GP wrote:
>> I had a problem in which both SPAN and CENTER changed arbitrarily
>> (it seemed) on band changes. I finally saved the configuration
>> using the P3 Utility, reset the P3 to factory parameters (power
>> off, hold LABELS while powering on, wait for 2 seconds, let go of
>> LABELS), and finally used the utility to restore the
>> configuration. The problem hasn't recurred -- it's been a few weeks
>> and it was pretty much a daily occurrence. YMMV.
>> 
>> 
>> 73, Victor, 4X6GP Rehovot, Israel Formerly K2VCO CWops no. 5 
>> http://www.qsl.net/k2vco/
>> 
>> On 10/03/2019 16:51, Gary J Ferdinand wrote:
>>> Various searches dredged up nothing helpful.  I recently
>>> developed a P3 problem.  The SPAN does not get saved.  Whenever I
>>> change bands to a band I had set it, say, to 50 kHz, the SPAN
>>> resets itself to 5 kHz. Sometimes I can even watch the display as
>>> it cranks down the bandwidth.
>>> 
>>> This is a P3 *without* SVGA, but *with* TXMon.  It has 1.60
>>> firmware installed and reloaded without effect.  It is not
>>> directly connected to a PC. The transceiver to which it is
>>> connected is a K3S.
>>> 
>>> P3 SPAN settings:  SpanScale: REF LEVEL ONLY, SteppedSpan:  OFF
>>> 
>>> I appreciate any pointers to where I should look.  Thanks.
>>> 
>>> 73/Gary W2CS


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