[ARC5] ART-13 Use in WWII B-29

[Bill Carns]

You also have to remember that back in those days (and still in use somewhat
when I started flying in 1959) were LF beacons as ground Nav Aids for homing
and Enroute Beacons (A-N Range) and some of the still had hold-over comm
capability.  That was a long tome ago and all of that LF stuff is gone now.

In the very early days of Airborne Navigation, the frequency range in use
pretty much was only from 200 kc to just over 3 mc.

Bill
N7OTQ

-----Original Message-----
From: arc5-bounces at mailman.qth.net [mailto:arc5-bounces at mailman.qth.net] On
Behalf Of Robert Eleazer
Sent: Tuesday, September 10, 2013 9:01 PM
To: arc5 at mailman.qth.net
Subject: [ARC5] ART-13 Use in WWII B-29

Interesting item I found in a book I just received, "XXI Bomber Command
Combat Crew Manual May 1945"   Rather than a typical flight manual, this
book has specific procedures for the B-29's of the 21st Bomber Command,
operating from the Marianas Islands and attacking Japan.

Relative to liaison radio operations, it states:

"At least one aircraft per squadron will have eleven pre-tuned channels on
the ART-13.  This eleventh pre-set channel whether it be in the 200-600
kilocycle band or the 500-1500 kilocycle band may be used as a radio homing
aircraft in air-to-air homing for assembly purposes, target directors, or,
air-sea rescue purposes.  Frequencies to be used are listed in the S.O.I."

S.O.I is Signal Operations Instructions.

Don't know about y'all, but that answers a question I have had for some
time:  What were the low freq plug in oscillators for the ART-13 used for?
It appears one answer is that such equipment enabled the B-29's to use their
ARN-7 to home in on other B-29's broadcasting on the low or medium
frequencies.

The book has a lot of other interesting details, such as how to use the
radar and a detailed description of communications procedures.  They had a
50,000 watt station on Saipan beamed toward Japan, operating at all times to
provide a homer. 


Wayne  

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