TM 11-6625-486-14&P
EL6625-486-14-TM-6
Control, indicator, or connector
Function
FUNCTION SW
Selects function that frequency meter is performing.
Switch position
Action
OFF
Turns frequency meter off.
OPER
Permits use of vfo to determine frequency of unknown signals
received by frequency meter, or to radiate a signal for test
purposes.
CHK
Turns on internal crystal calibrator. Permits checking vfo
frequency against crystal calibrator and crystal checkpoints on
filmstrip.
MOD
Modulates rf signal with 900 Hz.
AUDIO GAIN control
Adjusts audio output to headset.
TUNING control
Permits tuning vfo to desired frequency within range selected by RANGE SW.
Frequencies appear on lighted filmstrip.
DIAL LOCK
When turned clockwise, locks TUNING control.
Power receptacle
Used to connect power cable to frequency meter.
CORRECTOR control
Adjusts frequency of vfo to coincide with crystal checkpoints printed on filmstrip.
Internal crystal calibrator is turned on when FUNCTION SW is set to CHK.
RANGE SW
Selects one of three frequency ranges and operates a mask that covers all frequency
ranges printed on filmstrip, except range in use.
Switch position
Action
125KC-2.5MC
When used with TUNING control, allows tuning of frequency
A
meter from 125 kHz to 2.5 MHz.
2.5MC-65MC
When used with TUNING control, allows tuning of frequency
B
meter from 2.5 to 65 MHz.
65MC-1000MC
When used with TUNING control, allows tuning of frequency
C
meter from 65 to 1,000 MHz.
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