[Milsurplus] Looking for a Navy ATD 9050-15,800 Tuning Unit

[Michael Hanz]

Nope - I have seen several 200-540 TUs around over the years, one of 
which is in mine at http://aafradio.org/flightdeck/ATD.jpg

  - Mike  KC4TOS

On 4/25/2017 12:38 PM, Rob Lee wrote:
> Interesting dialog on the ATD. Wondering if the same holds true for 
> the 200-540 tuning unit?
> Rob
>
>     ----- Original Message -----
>     *From:* Hubert Miller <mailto:Kargo_cult at msn.com>
>     *To:* Military Surplus Mail List <mailto:milsurplus at mailman.qth.net>
>     *Sent:* Tuesday, April 25, 2017 1:10 AM
>     *Subject:* Re: [Milsurplus] Looking for a Navy ATD 9050-15,800
>     Tuning Unit
>
>     ATD could not have met the Navy specs to replace GO series. The
>     ATD proposed top frequency was 15 MHz, not meeting the apparent
>     long distance patrol spec of 18 MHz.
>
>     By inspection, i would not think the ATD would deliver respectable
>     stability on any frequency around even 15 MHz.
>
>     -H
>
>     >The ATD was apparently a competitor to the Collins ATC to replace
>     the GO's and GP's.  Neither it nor the ATC would have been
>     installed in a multi-engined aircraft along with either of those
>     older sets.  Plus four of the GO's went up to 13575 KC and three
>     went to 26500.  Only the final three stopped at 9050.  The RAT and
>     RAV were reportedly built to go with the first seven models,
>     either in addition to a Liaison RU or standalone.
>
>     Robert Downs - Houston
>     wa5cab dot com (Web Store)
>     MVPA 9480
>
>     In a message dated 04/25/2017 01:42:10 AM Central Daylight Time,
>     Kargo_cult at msn.com <mailto:Kargo_cult at msn.com> writes:
>
>
>         I wager no one outside the manufacturer's labs saw the high
>         tuning unit.
>         Consider this also. The matching receiver would have to be the
>         RAX. That means a large PB class plane, where the transmit job
>         was already being
>         handled by the GO transmitter. There was no Navy use for the
>         ATD high tuning unit. TB class planes only had a receiver
>         going to 9050, even when
>         fitted with a transmitter going to 18 MHz.
>         -Hue
>
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