Settings and adjustments, Jumper settings, Selector switches – GAI-Tronics 370-400 UHF and VHF Page/Party Radio Couplers User Manual
Page 9
Pub. 42004-432D
Model 370-400 UHF and 370-420 VHF Page/Party
®
Radio Couplers
Page:
9 of 13
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Settings and Adjustments
Jumper Settings
Radio Output Power, P5 - The radio can be configured for either high or low output power. Default is
high power (5 W).
Page Line Termination, P4 - The page line can be terminated locally or remotely in the system. The
default is for remote termination (open). The party line is always terminated internally to the unit.
Terminating the party line remotely will cause the off-hook detection circuit to fail.
Selector Switches
Radio Frequency Selector Switch, SW2 – The radio can be configured for one of eight programmed
frequencies. The switch is a hex type with 16 positions, so two positions can be used for the desired
frequency. Refer to Table 5 for the selector switch settings.
Table 5. Radio Frequency Selector Settings
Radio
Channel
Selector
Switch Position
1
0 or 8
2
1 or 9
3
2 or A
4
3 or B
5
4 or C
6
5 or D
7
6 or E
8
7 or F