[Milsurplus] APN-1 vs C-1

[J. Forster]

Michael Tauson wrote:

> Hi, Larry,
>
> I wonder what the APN-1's autopilot coupling connected
> to then.

Me too. Does anyone know anything it was connected to?

> On staring at the schematic for a while,
> there are two pots that form a trimmable portion of
> the altitude limit circuit and two inductors which I
> assume are relay coils for a kind of bang-bang
> altitude control.

There are 3 states: High, OK, and Low. Not really bang-bang.  More like
tri-state.

> Since the APN-1's upper limit was 4,000 feet [snip]

The APN-1 had two ranges 0 to 400 and 0 to 4000. The Navy version was single
range.

> Okay, I guess I add copies of the APN-1 manuals to the
> ever growing list.  [snip]

There will be a full set on Trackpads in the next couple of months (both Op and
Maint, both Army & Navy,  and the TS-10 also)

BTW, does anyone have a TS-16 manual??  PLEASE ??

-John