Re: [MV] WWII Jeep Radio Antenna
OKMTRPOOL@aol.com
Tue, 24 Aug 1999 20:20:48 EDT
According to TM11-605 (15 Nov 43) for the radio sets SCR509 and 510:
(I quote)
(11) Tying down the antenna.
It may be necessary, to attract as little attention as possible to your
vehicle, or to avoid overhead obstructions when in motion, to tie down the
antenna. A ,metal fitting, a ceramic (porcelain) insulator and at least 15
feet of rope PR-5 are issued for use as the tie-down assembly. Proceed as
follows:
(a) Cut 1 1/2 feet of rope from the 15-foot length. Tie one end securely
through the 3/8 inch hole of the metal fitting and the other through one end
of the porcelain insulator. Attach the remaining rope through the other hole
of the porcelain insulator and tie it securely.
(b) Slip the lower end (the threaded portion of the plug end) of Mast Section
MS-52 through the 1/2 inch hole of the metal fitting and screw the mast
section back into the top of the lower Mast Section MS-53. the antenna down,
by means of the rope, until it is nearly horizontal. Fasten the rope with a
secure knot to a convenient point on the vehicle, approximately three feet
from the mast base bracket.
(end quote)
The metal piece they describe is a thin lozenge-shaped ( rectangle with round
ends) piece of metal with a 3/8" hole in one end and a 1/2" hole at the
other. The porcelain insulator is a cylindrical piece of porcelain with a
hole at each end. The installation manual for radio equipment in 1/4 ton
trucks (TM 11-2715) lists the insulator as IN-86. Fair Radio sells a Strain
Insulator RP-5, which is 4" x 0.8" with two 1/4" diameter holes, which is
similar to IN-88 and works nicely for this application. (Fair Radio stock
number #3G1250-64.15, priced at $1.25). The rope you can get from any hemp
dealer.
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