[Milsurplus] R-442 Antenna Connections

[Gene Smar]

Gents:

     Found this:  https://www.youtube.com/watch?v=aUh2jSvvBVM .  The
engineers were geniuses.


73 de
Gene Smar  AD3F



-----Original Message-----
From: Milsurplus [mailto:milsurplus-bounces at mailman.qth.net] On Behalf Of
Mike Morrow
Sent: Saturday, October 01, 2016 7:13 PM
To: B. Smith <smithab11 at comcast.net>; Milsurplus
<milsurplus at mailman.qth.net>
Subject: Re: [Milsurplus] R-442 Antenna Connections


> Why does the R-442 have two antenna connections? Both antenna input 
> BNC's are connected in parallel. Enquiring minds want to know.

There are two versions of the AN/VRC-12 that use two R-442A/VRC
receivers...the AN/VRC-44 (with RT-246A) and the AN/VRC-48 (with RT-524A).
The receivers were always connected to an auxiliary antenna separate from
the RT-unit antenna.  Usually there was only one antenna for both receivers
connected to one receiver directly.  The other receiver was connected to
that antenna by a short coax cable CG-1127/U running between the remaining
BNC connector on the one receiver to either of the BNC connectors on the
other receiver.

I like the AN/VRC-12.  It had a 47-year service history with US forces,
length unmatched by any other US radio gear in history.  The last units were
removed from reserve unit service in 2008.  In the mid-1960s, it was
fabulously expensive...with a RT-246A/VRC costing taxpayers close to $20,000
in 1968...about $100,000 today.

Mike / KK5F
  
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