PS Magazine - TB 43-PS-585
PS, The Preventative Maintenance Monthly
ISSUE 585
AUGUST 2001
57
Vehicular Antennas.
..
H
ey, vehicle operators, some safety people are not too happy with some of you.
Seems they’ve spotted a whole lot of vehicular antennas waving in the wind as you
cruise around post. Tying down your antennas to keep them from striking a power
line or an overhead bridge is the only safe way to go.
The maintenance folks are not too happy with some of you, either. Seems they
have spotted a whole lot of vehicular antennas tied down while the vehicle is parked
overnight in the motor pool. That unnecessary stress on the base spring weakens it.
Also, an upright antenna keeps the base spring coils close together, which helps
keep out moisture and dirt.
When safety calls for your antenna to be tied down, do it right.
Tie down the antenna at a 45°-60° angle to the ground. That’s low enough to
avoid collisions with most overhead obstacles, but not so low that you risk cracking
antenna sections or the base.
Attach the antenna clip midway between the tip and the base. Too far forward and
you’ll bow the antenna. Too far back and you won’t get the right angle.
If your vehicle has more than one antenna, tie them down alongside the vehicle.
Never cross them. If you do, the transmitting antenna will feed its signal to the one it’s
touching. You’ll get interference and maybe even do damage to your radio’s circuits.
Get a tiedown kit for your AS-3900 antenna with NSN 4020-01-341-8795. NSN
4020-00-908-6416 brings a tiedown kit for the AS-1729 antenna.
When connie went for a
walk she spotted
lots
of tied down antennnas
on moving vehicles…
This one is too low…
This one is too high…
But this one is just right
Let them stand tall
in the motor pool
Tie ‘em down when
you’re on the move
PS 585
56
AUG 01
585. 56-57 (C)
6/28/01
4:18 PM
Page 1
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