[Milsurplus] ASB-5 Antenna question

[J. Forster]

It sounds like a reversing switch:

Tx to L ; Rx to R

then

Tx to R; Rx to L

repeat.

There must be some kind of L-R syncronizing signal to the Tx and Display unit at
a minimum also to trigger the Tx and sweep

Could you scan the cabling page from the book and email it to me?.

Thanks very much,
-John



Mike Morrow wrote:

> John wrote:
>
> >Does anyone know how many antennas the ASB-5 radar uses? It clearly has a
> left
> >and right receive antenna, but is the antenna switch a DPDT (reversing)
> switch
> >so the Tx and Rx use the same antenna alternately or does the Tx use a
> dedicated
> >antenna, like the AN/APN-2?
>
> John,
>
> William Donzelli can give you the real technical info on how the switching
> unit does its job, but until he replies I'll provide what the ASB-5
> operating manual that I got from Fair Radio says.  There are only two (port
> and starboard) antennas for the ASB.  They connect to the antenna switching
> unit CRR-14AAG.  Also connected to the CRR-14AAG is the transmitter RF
> output cable, the receiver RF input cable, the receiver output cable, the
> indicator unit's port and starboard input cables, and the power cable to the
> rectifier unit.  That's a bunch of cables and I'm not sure what some of them
> do, but there are only the two antenna cables.
>
> Mike / KK5F