[Milsurplus] ID an IFF (or possibly radar)

[Ian Wilson]

Hi Marty,

This is a single unit, RX/TX combined. It is pretty compact (perhaps
16" x 10" x 8") and probably weighs less than 20 pounds. Looking at
the APN-1 schematic, it could be similar (minus all the power supply,
relays, etc) although the pair of 8025 argues for considerably more
TX power, and I wonder what the 829B modulator is for. Perhaps
this is a tail-end radar?

Any pics of SCR-518 on the web? Didn't find any.

73, ian K3IMW