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P3 Showing Transmit Signal

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Bud Governale, W3LL

P3 Showing Transmit Signal

I noticed this weekend that occasionally during transmit instead of the scan
freezing in place it would continue scanning showing only my transmit signal
with only that signal appearing in the black waterfall.

I don't have the P3TXMON. It never did this before.

I was viewing the external SVGA monitor.

Any idea why?

73,

Bud W3LL

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Alan Bloom

Re: P3 Showing Transmit Signal

The K3 is supposed to send a command to the P3 to tell it whether it is
in transmit or receive mode. Apparently sometimes that isn't happening
for some reason. It could be an intermittent RS-232 connection between
the K3 and the P3 or perhaps some software running on a PC is
overloading the RS-232 with tons of commands.

Alan N1AL

On 11/24/2015 08:55 AM, Bud Governale wrote:

> I noticed this weekend that occasionally during transmit instead of the
> scan freezing in place it would continue scanning showing only my
> transmit signal with only that signal appearing in the black waterfall.
>
> I don't have the P3TXMON. It never did this before.
>
> I was viewing the external SVGA monitor.
>
> Any idea why?
>
> 73,
>
> Bud W3LL
>
>
>
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
>

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EUGENE GABRY

Re: P3 Showing Transmit Signal

In reply to this post by Bud Governale, W3LL

I noticed this a few times as well with my K3S and P3. When it happened, I
was running a frequency, and I would go into TX sometimes before the P3
would unfreeze and the P3 would display my TX peak, following my modulation.
Seemed to maybe happen at some transition of the P3 going back to RX when I
keyed the microphone. Also noticed sporadic freeze decay of P3 after
stopping TX. Most times it switched to RX right away, but sometimes it hung
up for a second or two. I thought I was seeing things!

Any ideas out there?

Gene, N9TF
K3S 10057

-----Original Message-----
From: Elecraft [mailto:[hidden email]] On Behalf Of Bud
Governale
Sent: Tuesday, November 24, 2015 10:56 AM
To: [hidden email]
Subject: [Elecraft] P3 Showing Transmit Signal

I noticed this weekend that occasionally during transmit instead of the scan
freezing in place it would continue scanning showing only my transmit signal
with only that signal appearing in the black waterfall.

I don't have the P3TXMON. It never did this before.

I was viewing the external SVGA monitor.

Any idea why?

73,

Bud W3LL

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delivered to [hidden email]

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EUGENE GABRY

Re: P3 Showing Transmit Signal

In reply to this post by Alan Bloom

I wonder if this phenomenon could be related to N1MM+. I have never seen
this happen before (without N1MM+ running). I was using N1MM+ logging with a
lot of functions running. That might explain the delay. Interesting.

Gene N9TF

The K3 is supposed to send a command to the P3 to tell it whether it is in
transmit or receive mode. Apparently sometimes that isn't happening for
some reason. It could be an intermittent RS-232 connection between the K3
and the P3 or perhaps some software running on a PC is overloading the
RS-232 with tons of commands.

Alan N1AL

On 11/24/2015 08:55 AM, Bud Governale wrote:

> I noticed this weekend that occasionally during transmit instead of
> the scan freezing in place it would continue scanning showing only my
> transmit signal with only that signal appearing in the black waterfall.
>
> I don't have the P3TXMON. It never did this before.
>
> I was viewing the external SVGA monitor.
>
> Any idea why?
>
> 73,
>
> Bud W3LL
>
>
>

EUGENE GABRY

Re: P3 Showing Transmit Signal

Just wanted to share this tip from Al, as it worked. Although, I started by reducing the polling by 50% first, and that did it. Ran a bunch of CQs with quick TX/RX switching and all N1MM+ functions running, and no freeze ups. Still don't know what path switched though on three of those hang ups over the weekend when I saw my TX signal in the P3 without the P3TXMON.

Thanks for the info Al.

73 Gene N9TF

K3S 10057

-----Original Message-----
From: Al Lorona [mailto:[hidden email]]
Sent: Tuesday, November 24, 2015 7:56 PM
To: Gene Gabry
Subject: Re: [Elecraft] P3 Showing Transmit Signal

Gene, you can tell N1MM+ to reduce the Radio Polling rate.

Go to Config --> Configure Ports, Mode Control, Audio, Other...

On the Hardware tab, click on the Set button for your K3 port and then select "100% Slower" from the Radio Polling list. This may help.

R,

Al W6LX

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