[ARC5] [Milsurplus] More Guided Bomb Control Box Stuff

[jcoward5452 at aol.com]

All this reminds me of a Man From U.N.C.L.E. episode where a "hit" was made useing a radio controled model airplane. Brings up recent news item where a guy was recently arrested for attempting to do same in D.C.
 A friend of mine who is an avid R/Cer got an email from his club that there would be no R/C flying while POTUS was in the Bay Area (CA) recently.
 And what to do about 20,000 shoulder fired weapons now loose on the balck market due to lapses of security in foreign lands?
 Argh!,
         Jay



-----Original Message-----
From: J. Forster <jfor at quikus.com>
To: armyradios <armyradios at yahoogroups.com>
Cc: arc5 <arc5 at mailman.qth.net>; milsurplus <milsurplus at mailman.qth.net>
Sent: Fri, Sep 30, 2011 10:12 am
Subject: Re: [Milsurplus] More Guided Bomb Control Box Stuff


It's interesting to me how far this technology has come in our lifetimes,
rom the AZON to today's Predators, Reapers, and Grey Eagles that killed a
ouple of Jihadists in Yemen this morning.
YMMV,
-John
=============

>> http://www.ebay.com/itm/360397107215

 There are a couple of too-short (less than 1 minute) video clips on
 youtube that show the BC-1156-A control box in use.

 Vertical Bomb VB-3 (RAZON) and VB-2 (AZON):

   http://www.youtube.com/watch?v=W20ayF7e9NI

 Glide Bomb GB-4:

   http://www.youtube.com/watch?v=LaU7prmBkPk

 The GB-4 clip shows the TV video coming from an actual bomb drop test
 in 1944.

 The VB-3 and GB-4 were not used in combat in WWII.

 Yesterday I posted a short description of the AN/CRW-3 control receiver
 in the GB-4, based on the BC-454-B or BC-455-B.  Dave Stinson some years
 ago posted the Operating Instructions AN 16-30CRW3-2, 21 April 1945, for
 the AN/CRW-3.  That manual contains the following statement:

 "1.e. Radio Receiving Set AN/CRW-3 is satisfactorily controllable at
  distances up to 15 miles from the control source, when the controlling
  transmitter is Radio Transmitter BC-375 or its equivalent."

 Apparently, the VHF 53 to 95 MHz RAZON equipment (AN/ARW-38 and AN/CRW-7)
 used for Vertical Bomb VB-3 was not satisfactory for the longer range
 Glide Bomb GB-4, which used HF control signals.  However, the 254 to 372
 MHz range was used to transmit video from the GB-4 using AN/AXT-2 to the
 controlling aircraft receiver AN/AXR-1.

 Somewhat related, the famous and problematic use of war weary B-17
 aircraft
 (re-designated BQ-7) or B-24 aircraft (re-designated BQ-8) as guided
 missiles used the AN/ARW-1 receiver (BC-617 or R-154/ARW) in the missile,
 and the AN/ARW-18 transmitter (BC-925 for 20 watts/18 mile range with
 AM-33/ART added for 100 watts/75 mile range) in the controlling aircraft.
 These controlled using FM signals in the 30 to 40 MHz range.  The 254 to
 372 MHz range was used to transmit video from the BQ-7 or -8 using
 AN/AXT-2
 to the controlling aircraft receiver AN/AXR-1.

 Mike / KK5F
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