1-18
SECTION 1
INTRODUCTION
AM MODULATION METER
Range:
Resolution:
Accuracy:
Modulation Rate:
Carrier Range:
Carrier Level:
T/R Connector:
ANT Connector:
AGC Attack Time:
1% to 100%
0.1%
± 5% of full scale, ± 1 count + source
residual AM (300 kHz IF BW, 1 kHz tone,
50% AM depth, C-Message weighted
filter)
50 Hz to 10 kHz
250 kHz to 1 GHz (The received
frequency must be within the IF
bandpass of the COM-120C.)
0 to +53 dBm
-60 to 0 dBm
50 ms maximum
RF POWER METER
Meter Ranges:
Resolution:
Accuracy:
Frequency Range:
RF Level Range:
Usable Level:
Operating Conditions:
VSWR:
Alarms:
2 mW to 200 W in a 1-2-5 sequence
1% of full scale or 0.1 mW, whichever is
greater
± 10%, ± 0.1 mW, ± 1 digit (>200 mW, 15° C
to 36° C)
± 15%, ± 0.1 mW, ± 1 digit (<200 mW
below 15° C and above 35° C)
1.5 MHz to 1 GHz
2 mW to 200 W average power
0.2 mW to 200 W average power
(characteristics below 2 mV not
specified)
50 W CW continuous (50°C)
100 W CW (90 sec/3 min, 50° C)
150 W CW (30 sec/3 min, 50° C)
200 W CW (15 sec/3 min, 50° C)
1.15:1 (0.25 to 100 MHz)
1.23:1 (100 to 400 MHz)
1.38:1 (400 MHz to 1 GHz)
Audible and visual (if applied power
exceeds 200 W in the 200 W range or the
COM-120C’s Power Termination
Assembly temperature exceeds 105° C)
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General