400 SERIES MAINTENANCE MANUAL
Page 5-15
P/N 190-00140-05
Rev. C
3.
Transmit Mode: +14/+28 Volt Radios (J2-11 and 12):
Voltage _________ (+ 13.75 V)
Tolerance _________ (
r
0.2 V)
Max Current Avg
1
_________ (6.0 A)
5.7.2.2
RF Power Out
1.
Set input voltage to 27.5 VDC (10 W, 28V units only) in TX mode at Pins J2-11 and 12.
2.
Connect a wattmeter to the antenna output and record the following unmodulated values:
118.50 MHz _________ 10 Watts Min (-0 dB)
127.50 MHz _________ 10 Watts Min (-0 dB)
136.50 MHz _________ 10 Watts Min (-0 dB)
3.
Set input voltage to 13.75 VDC (10 W, 14/28V units only) in TX mode at Pins J2-11 and 12.
4.
Connect a wattmeter to the antenna output and record the following unmodulated values:
118.50 MHz _________ 10 Watts Min (-0 dB)
127.50 MHz _________ 10 Watts Min (-0 dB)
136.50 MHz _________ 10 Watts Min (-0 dB)
5.
Set input voltage to 27.5 VDC (16 W units) in TX mode at Pins J2-11 and 12.
6.
Connect a wattmeter to the antenna output and record the following unmodulated values:
118.50 MHz _________ 16 Watts Min (-0 dB)
127.50 MHz _________ 16 Watts Min (-0 dB)
136.50 MHz _________ 16 Watts Min (-0 dB)
7.
Verify that there is no more than 3 watts variation among the three values in steps 2, 4, and 6.
______OK
1
TX adjusted for a 10 watt carrier 80% AM, 1 KHz (both 10 and 16 watt versions).
Содержание GNC 420
Страница 22: ...Page 2 2 400 SERIES MAINTENANCE MANUAL Rev C P N 190 00140 05 This page left intentionally blank...
Страница 42: ...Page 3 16 400 SERIES MAINTENANCE MANUAL Rev C P N 190 00140 05 This page left intentionally blank...
Страница 64: ...400 SERIES MAINTENANCE MANUAL Page 5 13 P N 190 00140 05 Rev C Figure 5 4 Test Pages...
