[Milsurplus] My Latest Project ART-13/B AM Transmitter

[Mike Morrow]

Todd wrote:

> I'm still confused as to why my ATC has TCZ slides on the bottom, unless
> the Navy used this rail system before the later shock mount system was
> available?

Mike wrote:

> Exactly right.  For some reason, the original ATC had the same system 
> that was used on the GP-7 and ATD, all of which had a 'female' set of 
> rails that then required mounting to an external shock system if any 
> life was to expected from the tubes in an aircraft.

That always made sense to me, because the ATC and ATD were contemporary
and competing designs.  But considering the long life of the AN/ART-13A
(into the early 1970s on some older USAF aircraft) its a good thing
someone came up with a much better mount.  I suspect that hard experience
drove that change.

Even the early T-47/ART-13 (not sure if they were just re-labeled ATCs
or newly-made T-47s) used that old GP-*/ATD type mount.  It had a JAN
nomenclature of MT-161/ART-13 for the stationary rail part.  They were 
apparently almost all replaced by the MT-283/ART-13 attached to the
transmitter and the MT-284/ART-13 stationary shock base.  IIRC, the
conversion involved not only installing the MT-283 to the bottom of
the transmitter, but also removing the bottom plate that spanned the
two old mounts.

I think any ATC that has the old mounting system should also have the
8Q-1 MCW-CFI unit if the transmitter is in original as-made condition.
I don't know about the TCZ-* units.  I suspect they also used (at least
when made) the 8Q-1 as well.

Mike / KK5F