[RTTY] The uknown signal

[Kok Chen]

On Jul 30, 2007, at 1:36 PM, Phil Cooper wrote:

> Using MultiPSK, I checked Olivia, and apart from the usual 32 tones  
> at 1kHz
> width, there are the following also available:
> 4-250, 8-250, 4-500, 8-500, 16-500, 8-1000 and also 16-1000.

This one is definitely 16 tones, so you can count out the 4-, 8-  
variants, and also count out the 16-1000 since it is definitely not  
that wide.

Someone with Olivia capability might try the sound file with the  
Olivia 16-500 variant.

It is so close to being a double rate MFSK16 but I just could not  
decode any English when I slowed it down to half speed.

73
Chen, W7AY