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Re: [RTTY] what mode is this?

To: RTTY List <rtty@contesting.com>
Subject: Re: [RTTY] what mode is this?
From: Kok Chen <chen@mac.com>
Date: Mon, 30 Jul 2007 12:05:06 -0700
List-post: <mailto:rtty@contesting.com>
From KE1JF's wav file, it is Multi-toned FSK of some sort, close to 400 Hz wide


I took a look at the bins in cocoaModem's MFSK16 tuning indicator and see this:



The separation of the tones is wider than MFSK16. The red ticks are 31.25 Hz apart and MFSK16 tones fall neatly in them. The tone separation of this signal appears to be about 1.5 times wider.


I am going to try resampling the pitch next to see if it is just upsampled MFSK16 :-).

73
Chen, W7AY

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