[GreenKeys] ITTY 850 shift?

Alf Fisher alffisher2 at gmail.com
Sun Feb 5 08:19:46 EST 2023


Having said that Nick, the centre frequency of a Navy Department Bureau 
of Ships CV-89A in wide shift is 2550 c/s which with ± 425 shift makes 
the tone frequencies 2125 c/s and  2975 c/s.

That's the great thing about standards, there are so many to choose from!

I've got a CV-89A in the museum that I would love to be able to use but 
the discriminator frequencies don't fit with present day tone frequencies.

73,
Alf
G3WSD



On 05/02/2023 01:52, Nick England wrote:
> Paul, definitely use these military tones and not the ham ones that 
> Jim Haynes discussed. No one is running 850 shift any more except us 
> guys running military gear. Our equipment is not retunable to the ham 
> tones.
> Thanks
> Nick
>
>
> On Sat, Feb 4, 2023 at 8:29 PM W2HX <w2hx at w2hx.com> wrote:
>
>     That would be cool! Center freq 2000 Hz, shift is +/- 425 Hz so
>     that means the tones are 1,575 Hz and 2,425 Hz. Mark is low.
>     Someone correct me if I’m wrong.
>
>     73 Eugene W2HX
>     Subscribe to my Youtube Channel: https://www.youtube.com/@w2hx/videos
>
>     *From:* Paul Heller <paul0926 at comcast.net>
>     *Sent:* Saturday, February 4, 2023 7:58 PM
>     *To:* W2HX <w2hx at w2hx.com>
>     *Cc:* Daniel Jones <djones at k6yic.com>; Greenkeys
>     <greenkeys at mailman.qth.net>
>     *Subject:* Re: [GreenKeys] ITTY 850 shift?
>
>     Let me see what I can do. What are the frequencies for 850 shift,
>     mark and space?
>
>     Paul
>     W2TTY
>
>     ITTY: HTTP://INTERNET-TTY.NET:8000/ITTY
>     <http://internet-tty.net:8000/ITTY>
>     ITTY100: HTTP://INTERNET-TTY.NET:8010/ITTY100
>     <http://internet-tty.net:8040/EUROPE>
>
>     AUTOSTART: HTTP://INTERNET-TTY.NET:8030/AUTOSTART
>     <http://internet-tty.net:8030/AUTOSTART>
>     EUROPE: HTTP://INTERNET-TTY.NET:8040/EUROPE
>     <http://internet-tty.net:8040/EUROPE>
>
>
>
>         On Feb 4, 2023, at 5:53 PM, W2HX <w2hx at w2hx.com> wrote:
>
>         
>
>         Thanks, Dan. I can generate the tones ok. I was just hoping
>         that I could get some news stores to print. It would be great
>         if the ITTY powers that be could just pipe the same data to
>         both a 170 Hz shift and an 850 Hz shift audio stream. Dunno
>         what is involved with that but just curious.
>
>         73 Eugene W2HX
>         Subscribe to my Youtube Channel:
>         https://www.youtube.com/@w2hx/videos
>
>         *From:* Daniel Jones <djones at k6yic.com>
>         *Sent:* Saturday, February 4, 2023 7:46 PM
>         *To:* W2HX <w2hx at w2hx.com>
>         *Cc:* Greenkeys <greenkeys at mailman.qth.net>
>         *Subject:* Re: [GreenKeys] ITTY 850 shift?
>
>         I had a cast set up to broadcast tty over the internet.  Let
>         me look this week and see if it’s still running on my site and
>         the feed something into it at 850 shift.
>
>         You can also change the settings on the itty software to the
>         required tones to test it in-house.
>
>         Daniel
>
>         www.K6YIC.com <http://www.K6YIC.com>
>
>         DJones at K6YIC.com
>
>         HH#11973
>
>
>
>
>             On Feb 4, 2023, at 16:34, W2HX <w2hx at w2hx.com> wrote:
>
>             
>
>             Anyone know if there is a URL for ITTY for 850 shift?
>
>             73 Eugene W2HX
>             Subscribe to my Youtube Channel:
>             https://www.youtube.com/@w2hx/videos
>
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>
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>     >>> Jordan Spencer Cunningham's GreenKeys Search Tool:
>     https://teletype.net/gksearch
>     >>> 2002-to-present greenkeys archive:
>     http://mailman.qth.net/pipermail/greenkeys/
>     >>> 1998-to-2001 greenkeys archive:
>     http://mailman.qth.net/archive/greenkeys/greenkeys.html
>     >>> Randy Guttery's 2001-to-2009 GreenKeys Search Tool:
>     http://comcents.com/tty/greenkeyssearch.html
>
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>     Please help support this email list: http://www.qsl.net/donate.html
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> -- 
> Nick England K4NYW
> www.navy-radio.com <http://www.navy-radio.com>
>
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>>>> Jordan Spencer Cunningham's GreenKeys Search Tool:https://teletype.net/gksearch
>>>> 2002-to-present greenkeys archive:http://mailman.qth.net/pipermail/greenkeys/
>>>> 1998-to-2001 greenkeys archive:http://mailman.qth.net/archive/greenkeys/greenkeys.html
>>>> Randy Guttery's 2001-to-2009 GreenKeys Search Tool:http://comcents.com/tty/greenkeyssearch.html
> This list hosted by:http://www.qsl.net
> Please help support this email list:http://www.qsl.net/donate.html
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