[Milsurplus] Mystery box3

[J. Forster]

Sounds a lot like a ASB-5 Rx. The radar used a L-R lobe switch  to route the
input from two antennas to the Rx and to send the corresponding video to the
indicator channels. The Rx was essentially time division multiplexed between L
and R channels.
-John

Ray Fantini wrote:

> Mystery Box pt 3 Thanks for all the response, now led to think it might
> be a primitive radar receiver, although I always thought they would be
> larger. The front of the receiver has one coaxial connector that is the
> antenna input labeled "antenna unit" a video output that appears like a
> old style signal pin microphone connector labeled "antenna unit, one
> missing cannon plug labeled "power unit " and the cylinder that contains
> the oscillator tuning plate labeled "tune". That has the same spine
> connector as an ARC-5, that's where the ARB coffee grinder head was, the
> head was calibrated for an ARB and not for this box. Will be connecting
> a power supply to it tonight and get an idea where the oscillator
> operates and what the IF is. Please understand that I did not have any
> idea of this thing having any value, other then the tuning head and only
> listed it because of it uniqueness. This item is in no where near mint
> condition, has been ham modified by someone drilling a couple holes in
> the front and is missing its case. If there is someone who is collecting
> or restoring these systems will send it to them for what I have into it
> plus shipping, after I am don playing with it.
> Ray Fantini KA3EKH