I think that may be a clue Ed, my K3 is ancient [#642] but has current FW and new synth.  The computer connects to it and the P3 connects to the K3 serial port ... otherwise fixed-tune mode wouldn't work.  I've never seen the issue when changing bands with the BAND U/D switch, or from macros executed from the KPOD, only when the commands start at the computer and go thru the P3 to the K3.  N1MM+ is the only control software I use.

73,

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

On 10/26/2018 2:30 PM, AB4IQ wrote:
Sorry guys but N1MM+ works fine here.  I went to several bands and modes
with no change in the P3's span.  I am running WIN4K3SUITE and COM0COM and
all three programs at the same time with no issues.  I am using just a
standard (Printer Cable) to the PC but it is connected to the K3S rather
than the P3.  I thought it ran to the P3 at first but after further
inspection I was wrong.  (as Usual)

Ed..AB4IQ

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of AB4IQ
Sent: Friday, October 26, 2018 4:13 PM
To: 'Fred Jensen' <[email protected]>; [email protected]
Subject: Re: [Elecraft] P3: Span limits move when changing bands

I guess maybe I need to fire up N1MM+ to see what happens here.  Dxbase
seems to work fine and so does DX4WIN.

Ed.. AB4IQ

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Fred Jensen
Sent: Friday, October 26, 2018 3:52 PM
To: [email protected]
Subject: Re: [Elecraft] P3: Span limits move when changing bands

It may be a timing issue.  It only happens when the software [N1MM+ in my
case] sends a frequency command.  It rarely happens for me when I make the
first frequency change.  Returning to the first band, it usually happens.
And you're right, it is annoying.

73,

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

On 10/26/2018 10:01 AM, Randy Farmer wrote:
First sent this to Skip rather than the list...

This appears to have been a problem from the time of the introduction
of the P3. It seems to be triggered when a frequency command is
issued to the radio via the P3 comm port. Is there any hope on the
horizon for curing this extremely annoying "feature"? There's
absolutely NO reason for the P3 to decide to change the span limits
by itself once they've been set up on a band. Maybe if we complain
every couple of months someone at Elecraft will take notice and get
it fixed.

73...
Randy, W8FN

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