Section I
Paragraphs 1-22 to 1-23
TABLE II. TUBE COMPLEMENT (Cont)
AND ADJUSTMENTS (Cont)
TUBE
SYMBOL
FUNCTION
CONTROL
TYPE
FUNCTION
NUMBER
R-F CHASSIS
METER
Selects the meter function.
MICROVOLTS
Calibrated from 4 to
V1501A,B
5670
Fine frequency oscillator
200,000 microvolt for r-f
Coarse frequency oscillator
6AK5W
V1502
output control.
R-f mixer
6AK5W
V1503
6AK5W
R-f amplifier
V1504
MEGACYCLES
Adjusts the signal genera-
R-f quadrupler
6AK5W
V1505
6AK5W
tor frequency.
R-f amplifier
V1506
6AK5W
A-f amplifier
V1507
6AQ5
NAV-GS
Selects r-f frequency range.
Modulator
V1508
5751
V1509A,B
AUDIO SELECTOR
Selects audio signal for
modulating the r-f carrier.
UNIVERTER CHASSIS
12AT7
200 mc oscillator
V1510A,B
VOR
Phase shifts the 30 cps
component of the VOR
6AK5W
Univerter mixer
V1511
6AK5W
signal.
Univerter amplifier
V1512
6AK5W
Univerter amplifier
V1513
1 DEGREE
Phase shifts the 30 cps
1-23. OPERATING CONTROLS AND ADJUSTMENTS.
component of the VOR sig-
The operating controls and adjustments are listed with
nal one degree in either
their functions in table III and shown in figure 1-4.
direction.
LOC-GS
TABLE II OPERATING CONTROLS
Varies the ratio of 90 and
AND ADJUSTMENTS
150 cps tone localizer and
glide slope signals.
CONTROL
FUNCTION
METER ZERO
Sets the meter to zero.
SET LINE TO 21V
Power on-off switch and d-c
30~Frequency
input voltage control.
Adjusts frequency of 30 cps
Adjusts audio signal that
CARRIER SET
modulates the r-f carrier for
Adjusts frequency of 1000
1000~FREQUENCY
calibration of MICROVOLTS
cps oscillator.
control.
I
