[GreenKeys] ITTY question

[Nick]

Thanks Duncan

The only two things I can change on Eric's board is a bridge, WIDE to NARROW - it is bridged to NARROW at the moment and an adjustment screw, named and marked on the board as CENTER.

Nick  -  N0NCQ




Sent from my T-Mobile 4G LTE Device


-------- Original message --------
From: Duncan Brown <duncanancy at earthlink.net>
Date: 11/19/17 8:18 PM (GMT-05:00)
To: greenkeys at mailman.qth.net
Subject: Re: [GreenKeys] ITTY question

Nick,

ITTY Europe uses different tones than ITTY US - you should be able to
hear the difference.  Your AFSK converter/demodulator must be set up for
the proper tones. US tones are 2125/2295 Hz. Europe tones are 1275/1445
Hz. Go to RTTY.com and see


    Our RTTY over Internet Services

for details.

I'm not familiar with Eric's board. Does it have capability of switching
tones?

have fun,

Duncan
K2OEQ


On 19-Nov-17 19:32, Nick wrote:
> Hi gang,
>
> As I posted last week, I aquired a Siemens T37h in a beautiful wooden
> case (oak) and like to use that machine in the near future with
> iTelex. I got the machine running and the dialing until is repaired.
> Our iTelex-guru, Henning from Germany want me to do a final test
> before we go iTelex. He want me to copy ITTY EUROPE (50 baud, I guess)
> to see if absolute everything is in order with the T37 and the dialing
> until.
> Using Eric's demodulator board, I can copy ITTY news America on my
> 28KSR without a problem. Trying to copy ITTY EUROPE on the T37, the
> demodulator board doesn't do a thing, but I can hear the tone coming
> out of my PC and/or phone. It is not about what machine I am using,
> it's about that the demodulator is not kicking in. I know, on the
> demo-board is an adjustment screw for fine-tuning but I still can't
> get the board into action.
>
> Anybody with any info on my little challenge ???
>
> Nick  -  N0NCQ
>
>
>
> Sent from my T-Mobile 4G LTE Device
>
>
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