VSWR Test

TM 11-5985-335-15

Deicer Test. Apply 115 volts, 60 Hz through Multimeter AN/URM-105 ( ) (set to its 500-MA range) to the

deicer. The deicer should draw 300 milliamperes, ±10%.

5-8.

VSWR Test

(fig. &a)

Test Conditions. The AS-1425/GRC must be mounted to radiate into free space. This requires that

obstructions are no closer than 500 feet from the AS-1425/GRC reflector. If required, the AS-1425/GRC may be either

elevated to

NOTE

The VSWR is measured at the input to the 60-foot run (minimum length)

of Waveguide Assemblies CG7/GRC that feeds the signal from the

AN/URM42( )

Change 1

39.1