[GreenKeys] M28 gears and typebox

[Nick England]

Definitely contact him and ask for part numbers. There is a 96 tooth 45
baud gear used in one of the triple TD bases. See
https://www.navy-radio.com/tty/tty-td-gears.htm
So maybe not useful for a regular TD.


On Thu, Nov 23, 2023 at 2:29 PM Stan Voynick <svoynick at selmar.com> wrote:

> Thanks for the note, Nick!
>
> Did anyone else do a screen grab and try to estimate the teeth on the
> nylon driven gear? (I agree - seems like a TD gear...)
>
> I drew some dividing lines and tried to count the teeth in two
> semi-circles - from 12:00 to 6:00 and from 9:00 to 3:00, and both of those
> semi-circle estimates were 48 teeth, i.e. 96 total.
>
> Problem is, I don't see 96 on the chart of driven gears for the M28 TD!
> maybe I drew poor lines and I'm off by a count ... there are entries in teh
> manual for 94 and 98 teeth, but those are 75 and 67 WPM gears,
> respectively.
>
> 73,
>  - Stan
> WB7RPG
>
> On 11/23/2023 9:45 AM PST Nick England <navy.radio at gmail.com> wrote:
>
>
> Not mine, I know nothing, etc.
> Looks like maybe 60wpm gears for a KSR and for a TD.
> But you better check the part numbers...
>
> https://swap.qth.com/view_ad.php?counter=1664915
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