[GreenKeys] 10 Hz shift RTTY?

[Nick England]

Sorry, I should have said. Just change V204 from a 12AU7 to a 12AX7.
This was done in the field for 10 cps shift operation and in all CV-89A
produced on contract NObsr-64205.
Beyond that I know nothing!
Cheers
Nick



On Sat, Jul 29, 2017 at 6:07 AM Alf Fisher <alffisher2 at gmail.com> wrote:

> Nick,
> What have they done to make this even possible?
> I read that the CV-89 was designed for 850 Hz shift and worked OK with 425
> Hz but 170 Hz was a bit tricky.
> If there is a mod to improve its performance at 170 Hz or lower, please
> let us all know.
>
> Alf, G3WSD
>
>
> *From:* Nick England <navy.radio at gmail.com>
> *Sent:* Tuesday, July 25, 2017 9:55 PM
> *To:* Greenkeys <greenkeys at mailman.qth.net>
> *Subject:* [GreenKeys] 10 Hz shift RTTY?
>
> So, who used 10 cps shift?
> I just noticed that the AN/URA-8B (CV-89A) manual has a change notice
> (T-4) to improve operation when using 10-cycle shift deviation. My, that
> isn't very shifty!
>
> Nick England K4NYW
> www.navy-radio.com
>
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-- 
Nick England K4NYW
www.navy-radio.com
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