6-24
SECTION 6
OPTIONS
4. Generate RF Field
Displays RF Generate Frequency of COM-120C. Value is dependent on Channel
Number (1) and Band Selection (2). Field is for display only. Formula for figuring
value is as follows where Channel # is Channel Number (1):
800 MHz Band Selection (2)
Frequency (MHz) = 806.0125 + [0.025 x (Channel # - 1)]
900 MHz Band Selection (2)
Frequency (MHz) = 896.0125 + [0.0125 x Channel # - 1)]
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Radios operating in 800 MHz Band within range of Canada or
Mexico must use a 12.5 kHz offset.
5. Level
Displays Output Level. Range is dependent on Output (6). Range for Output (6)
set to T/R is -130 to -20 dBm. Range for Output (6) set to AUX is -130 to
-13 dBm.
6. Output
Displays Output Connector. Selections are T/R (T/R Connector) and AUX (AUX
RF OUT Connector).
7. Transmit
Trunking Data Block
Displays current data being passed to mobile radio. Refer to 6-12-3 for additional
information.
8. Modulation Source Window
Displays active Modulation Sources (10). Inactive Modulation Sources (10) are
not shown. If two (or more) sections of the RF Modulator are set in conflict (e.g.
GEN1 set for PM and GEN2 set for FM, or GEN1 set for 0.01 kHz deviation and
GEN2 set for 2.60 kHz deviation) then the screen shows the invalid source grayed
out.
9. Modulation Source
Displays selected Modulation Source. Selections include GEN1 (Audio Generator-
1), GEN2 (Audio Generator-2), DTMF (DTMF Tone Generator) and DATA (DATA
Generator).
10. Modulation Type
Displays selected Modulation Type. Selections include OFF, AM, FM and PM.
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