[Milsurplus] AC Fixed Antenna

[k2cby at optonline.net]

I can only speak for the B-17.

The hf radio gear consisted of two separate sets of equipment: (a) the
Command Set -- used to talk (am) between aircraft in flight or short-range
air-to-ground. And (b) the Liaison set - used to communicate long range
(primarily cw) to base.

The Command set, identified as SCR-274-N, typically consisted of three
separate receivers and two or three transmitters mounted on the starboard
side of the forward radio compartment bulkhead. A fixed antenna entered the
skin of the aircraft near the top of the bulkhead and fed the parallel-wired
antenna terminals of the transmitters and the receivers through a changeover
relay. The wire leading from the changeover relay to the feed-through was
bare and was insulated by small, rectangular ceramic beads. The distance
from the feed-through insulator to the changeover relay can't have been much
more than a foot.

The liaison equipment, identified as SCR-287, consisted of a BC-375E
transmitter (later replaced by AN/ART-13) mounted on the port side of the
after radio compartment bulkhead and the BC-348 receiver mounted on the
radio operator's desk, which was affixed to the port side of the radio
compartment forward bulkhead. The BC-375E principally used a retractable
trailing wire antenna reeled out from the port underside of the aircraft.
Again, the lead from the reel to the transmitter was short, but the antenna
to the receiver ran the full length of the radio compartment.

/Miles, K2CBY

 

Miles B. Anderson, K2CBY
16 Round Pond Lane
Sag Harbor, New York 11963-3821
Phone: (631) 725-4400
FAX: (631) 725-2223

e-mail: k2cby at optimum.net

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/milsurplus/attachments/20190601/b581a852/attachment.html>