[Milsurplus] old IFF systems control panels

[William Donzelli]

> radar  identification transmitters  is they were not remote operated by
> the
> crew  and the type of radar target generation symbol  that would be
> transmitted by their aircraft would be  be preset by the aircrew or by
> maintenance.

Mk III could have the codes set during flight, but there were only six
combinations _total_. One of the six was used as "Emergency". Mk IV could
not be
changed in flight, as the codes were stored on little disks that sat
indise the dynamotor unit.

Mk I and II did not have codes, basically.

William Donzelli
aw288 at osfn.org