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Distorted TX audio with RTTY decode enabled

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Tyler Stewart

Distorted TX audio with RTTY decode enabled

I just about went crazy finding this one last night. I've got two K3's @ N3HBX running 2.67 and 2.73 and both have the same problem. Setup is Data/AFSK A and 2125/170.

With the K3's RTTY decoder function enabled so it displays running text on the front panel, intermittent distortion is introduced into the TX AFSK audio, usually when set above a certain level. Actually, one of them had it at any level and the other would only kick in once the input level reached a certain level. With the decoder turned off, it does not exist at all. To describe the noise, it's like a high-frequency burping or buzzing noise.

See also unflat audio response in separate message.

Suggestions or confirmations?

Ty K3MM

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wayne burdick

Re: Distorted TX audio with RTTY decode enabled

Administrator

Lyle and I will team up on this as soon as possible.

tnx
Wayne
N6KR

On Jan 2, 2009, at 5:31 AM, [hidden email] wrote:

> With the K3's RTTY decoder function enabled so it displays running
> text on the front panel, intermittent distortion is introduced into
> the TX AFSK audio...

---

http://www.elecraft.com

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Doug Alspaugh

Re: Re: Distorted TX audio with RTTY decode enabled

Wayne,

See my other posts on this. I don't believe you have to have text decode on to experience this problem. I have had dialog with Lyle for sometime on this problem.

73 Doug N3QW

----- Original Message -----
From: "wayne burdick" <[hidden email]>
To: [hidden email]
Cc: [hidden email]
Sent: Friday, January 2, 2009 1:04:19 PM GMT -05:00 US/Canada Eastern
Subject: [Elecraft] Re: Distorted TX audio with RTTY decode enabled

Lyle and I will team up on this as soon as possible.

tnx
Wayne
N6KR

On Jan 2, 2009, at 5:31 AM, [hidden email] wrote:

> With the K3's RTTY decoder function enabled so it displays running
> text on the front panel, intermittent distortion is introduced into
> the TX AFSK audio...

---

http://www.elecraft.com

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Iain MacDonnell - N6ML-2

Re: Re: Distorted TX audio with RTTY decode enabled

FWIW, the problem seems clearly linked to the text decoder for me. I
don't believe I've ever observed it with the decoder turned off.

K3MM, see:

http://n2.nabble.com/Obscure-RTTY-bug--td2097526.html#a2098849

~Iain / N6ML

[hidden email] wrote:

> Wayne,
>
> See my other posts on this. I don't believe you have to have text decode
> on to experience this problem. I have had dialog with Lyle for sometime
> on this problem.
>
>
>
> 73 Doug N3QW
>
>
> ----- Original Message -----
> From: "wayne burdick" <[hidden email]>
> To: [hidden email]
> Cc: [hidden email]
> Sent: Friday, January 2, 2009 1:04:19 PM GMT -05:00 US/Canada Eastern
> Subject: [Elecraft] Re: Distorted TX audio with RTTY decode enabled
>
> Lyle and I will team up on this as soon as possible.
>
> tnx
> Wayne
> N6KR
>
> On Jan 2, 2009, at 5:31 AM, [hidden email] wrote:
>
> > With the K3's RTTY decoder function enabled so it displays running
> > text on the front panel, intermittent distortion is introduced into
> > the TX AFSK audio...
>
>
> ---
>
> http://www.elecraft.com
>
> _______________________________________________
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