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Re: [RTTY] (no subject)

To: "Joe Subich, W4TV" <lists@subich.com>
Subject: Re: [RTTY] (no subject)
From: Ed <autek@comcast.net>
Date: Tue, 23 Aug 2011 18:31:39 -0400
List-post: <rtty@contesting.com">mailto:rtty@contesting.com>
On 08/23/2011 06:26 PM, Joe Subich, W4TV wrote:
>
>   >  I may be missing something here, but how are the newer rigs generating
>   >  FSK ? Are they shifting xtals or just sideband tones ?
>
> Depending on the design they are using different approaches ... some
> are generating audio tones (at a fixed level relative to the carrier
> oscillator into the balanced modulator),  some are directly shifting
> the frequency of the carrier oscillator (a synthesizer, not a crystal)
> and one is directly generating the FSK signal using DSP at a low IF.
>
> 73,

So then none are using a true FSK generator ???

Ed W3NR
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