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AFSK

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Larry K1UO

AFSK

I'm unable to transmit an AFSK signal in DATA mode, although I can transmit
via the same LINE IN
in DATA A mode. The line output from my SignaLink USB soundcard does have
the audio signal on it and is connected to the Line In mono jack on the K3.
For MIC SEL in configuration, I have Line In selected. DATA MD is set to
AFSK A and shows 45 bps. PITCH is set to 915-170. Using MMTTY software and
the latest K3 firmware the K3 goes into transmit mode (audio signal is
present on cable feeding K3's Line In) but no modulation. What am I
missing??

I should mention this was working as early as 3 weeks ago and I have NO idea
what has changed. Just reloaded the K3 firmware and checked all MTTY
option parameters but all look good and as I mentioned..Data A xmits the
RTTY signals but not AFSK.

Larry K1UO

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n7ws

Re: AFSK

Is MMTTY set to transmit 915 Hz?

Wes N7WS

--- On Fri, 12/17/10, Larry K1UO <[hidden email]> wrote:

> From: Larry K1UO <[hidden email]>
> Subject: [Elecraft] AFSK
> To: [hidden email]
> Date: Friday, December 17, 2010, 10:51 AM
>
> I'm unable to transmit an AFSK signal in DATA mode,
> although I can transmit
> via the same LINE IN
> in DATA A mode. The line output from my SignaLink USB
> soundcard does have
> the audio signal on it and is connected to the Line In mono
> jack on the K3.
> For MIC SEL in configuration, I have Line In
> selected. DATA MD is set to
> AFSK A and shows 45 bps. PITCH is set to
> 915-170. Using MMTTY software and
> the latest K3 firmware the K3 goes into transmit mode
> (audio signal is
> present on cable feeding K3's Line In) but no
> modulation. What am I
> missing??
>
> I should mention this was working as early as 3 weeks ago
> and I have NO idea
> what has changed. Just reloaded the K3
> firmware and checked all MTTY
> option parameters but all look good and as I
> mentioned..Data A xmits the
> RTTY signals but not AFSK.
>
> Larry K1UO
>
>
> --
> View this message in context: http://elecraft.365791.n2.nabble.com/AFSK-tp5845592p5845592.html
> Sent from the Elecraft mailing list archive at Nabble.com.
> ______________________________________________________________
> 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
>

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Greg - AB7R

Re: AFSK

In reply to this post by Larry K1UO

Wes is correct. Please make sure you check:

1. Baud rate on the K3 should be 45 (if that is what your software is
using)
2. If you have the mark freq set to 915 Hz (pitch) on the K3 then your
soundcard software for RTTY must also be 915 Hz.

73
Greg
AB7R

On Fri, Dec 17, 2010 at 9:51 AM, Larry K1UO <[hidden email]> wrote:

>
> I'm unable to transmit an AFSK signal in DATA mode, although I can transmit
> via the same LINE IN
> in DATA A mode. The line output from my SignaLink USB soundcard does have
> the audio signal on it and is connected to the Line In mono jack on the K3.
> For MIC SEL in configuration, I have Line In selected. DATA MD is set to
> AFSK A and shows 45 bps. PITCH is set to 915-170. Using MMTTY software
> and
> the latest K3 firmware the K3 goes into transmit mode (audio signal is
> present on cable feeding K3's Line In) but no modulation. What am I
> missing??
>
> I should mention this was working as early as 3 weeks ago and I have NO
> idea
> what has changed. Just reloaded the K3 firmware and checked all MTTY
> option parameters but all look good and as I mentioned..Data A xmits the
> RTTY signals but not AFSK.
>
> Larry K1UO
>
>
> --
> View this message in context:
> http://elecraft.365791.n2.nabble.com/AFSK-tp5845592p5845592.html
> Sent from the Elecraft mailing list archive at Nabble.com.
> ______________________________________________________________
> 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
>

Larry K1UO

Re: AFSK

In reply to this post by Larry K1UO

All fixed.. The only thing I did was reload my saved options file in MMTTY and all is well again!! Somehow something got scrambled.

73
Larry K1UO
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