[Elecraft] P3 center frequency

[Fred Jensen]

Not sure who I'm talking to here, no signature, no call.  It's a little 
hard to explain but ...

Assume you set SPAN=100 KHz and put the left edge at the bottom of each 
band.  Changing bands back and forth using the BAND ^/v switch will 
preserve these settings, and every time you come back to a previous 
band, they will appear ... so long as you don't touch any of the P3 
controls.  However, using CAT commands [e.g. from a logger], you can 
change to a new band and the settings will hold, however returning to 
the previous band, the SPAN will still be 100 KHz but the center 
frequency will have moved and the left edge will no longer be at the 
bottom of the band.  Admittedly, it's a bit hard to duplicate but the 
circumstances that cause it are common in contesting and it has been 
duplicated by several folk, including me.

The issue has been raised here on the list more than once.  I think it 
first came up several years ago, which could be 1 or 6, even Apollo 11 
seems like yesterday to me these days. [:-)  It has some of the earmarks 
of an intentional attempt to "do something good" in the firmware which 
turned out to be not so good, but I really don't know.  For whatever the 
reason, I expect it to come back to the settings it had when I left that 
band.

As Randy said, it is really annoying.  I, and I think most, use the P3 
visually instead of looking at the K3.  If I set the left edge at the 
bottom of the band and the SPAN at 100 KHz, I automatically visualize 
the 1st 100 KHz directly from the screen. If it's changed as a result of 
band changes, my mental picture of that band segment is wrong.

73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

On 7/21/2019 4:20 PM, Tom wrote:
> Hi,
> What exactly do you mean?
> It is always set to whatever you send.  If you explain this a little more perhaps I can help.
> 73
>
>
>
> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net <elecraft-bounces at mailman.qth.net> On Behalf Of Randy Farmer
> Sent: July 21, 2019 2:44 PM
> To: elecraft at mailman.qth.net
> Subject: Re: [Elecraft] P3 center frequency
>
> It's been brought up several times in the last two or three years. No response from the P3 software guys. It's EXTREMELY annoying that the P3 won't respect the center frequency setting if the radio is tuned via any CAT command. I've given up on hoping it will ever be fixed. My guess is that it's all hands and the cooks working on K4 software these days.
>
> 73...
> Randy, W8FN
>
> On 7/21/2019 12:45 PM, Fred Jensen wrote:
>> Jim: In general, yes, if you change bands with BAND ^/v.  When you
>> change bands via the CAT, the P3 center freq won't always end up where
>> you last had it.  I believe SPAN width is preserved but the span
>> limits show up strange.  It's a known issue, has been discussed at
>> some length here a few months ago.
>>
>> 73,
>> Fred ["Skip"] K6DGW
>> Sparks NV DM09dn
>> Washoe County
>>
>> On 7/21/2019 10:31 AM, Jim N7US wrote:
>>> Should the P3 center frequency and span be remembered when changing
>>> bands?
>>> Rephrasing, can they be remembered when changing bands?
>>>
>>> Jim N7US
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