[ARC5] A.R.C. engineer visit to COMAIRPAC, Pearl Harbor Dec 1942

[Robert Downs]

No, what the F4F's could not change was their HF transmitting frequency.
I've been unable to learn which radio set the fighters carried at Midway,
but it would have been either the GF/RU with ZB and dual RU tuning unit or
the ATA/ARA with ZB.  And more likely the former.  Unfortunately, with the
GF/RU, switching between HF and homing required some coffee grinding.  But
otherwise, the two sets are operationally equivalent.  Remote tunable
receivers and lock-tuned transmitters.

 

Robert Downs

 

From: arc5-bounces at mailman.qth.net [mailto:arc5-bounces at mailman.qth.net] On
Behalf Of Robert Eleazer
Sent: Tuesday, September 11, 2018 12:47
To: arc5 at mailman.qth.net
Subject: [ARC5] A.R.C. engineer visit to COMAIRPAC, Pearl Harbor Dec 1942

 

 

YE/ZB range was UHF and hence dependant on the curvature of the Earth in
terms of range.  Pilots were instructed to climb and when they received the
signal they had a chart that showed X thousand feet = Y miles from carrier.
The transmitted frequency and codes (e.g. Morse letter A = 030 deg bearing
from carrier) were changed not only daily but on multiple times during the
day.  Of course the F4F's could not change the received frequency but only
the "IF Frequency."

 

Wayne 

WB5WSV   

 


 
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