TM 11-5826-225-35
erator for approximately 20 mw on
to 200 kc (the same as the receiver) as deter-
the audio output meter.
mined by a zero beat in the headset.
(8) Adjust T1 for a maximum indication
g. Disconnect the headset.
on the audio output meter.
(4) Repeat d through p above until no
h. Set the BFO-OFF switch on the control
further adjustment is required.
unit to OFF.
(6) Temporarily replace the cover of T1
i. Adjust R82 (fig. 2-8) for 100 mw on the
(do not solder).
audio output meter. Then tighten the locknut
on R82.
(6) Repeak C2 at 890 kc.
q. Check that the screwdriver slot in C2
j. Adjust the output of the signal generator
is not parallel to the front-to-rear axis of the
to 20 microvolt. Keep the modulation at 30
receiver. If the screwdriver slot is parallel to
percent.
this plane, readjust T1 at 200 kc. Then repeak
C2 at 890 kc.
audio output meter. Then tighten the locknut
r. Repeat the procedures in b through q above
on R90.
the chart below. If necessary, adjust the cor-
3-17.1 11 O-Hz Oscillator Frequency
responding transformer (fig. 2-9 or 2-9.1) for
each capacitor according to the requirement
of p above. Always disconnect the headset
when observing the audio output meter.
420
C3
900
C4
a.
2. It is not necessary to connect the `signal
a. Connect the equipment as shown in figure
generator, audio output meter, or headset.
2-2.
b. Set the switches on the control unit as
b. Set the switches. on the control units as
follows:
follows :
(1) BFO-OFF switch to BFO.
(1) BFO-OFF switch to OFF,
(2) Function switch to ANT.
(2) Function switch to ADF.
(3) GAIN control fully clockwise.
c. Set the switches on the test set as follows:
c. Set the switches on the test set as follows:
(1) DC POWER switch to OFF.
(1) DC POWER switch to ON.
(2) GONIO DRIVE switch to OFF.
( 2 ) RECEIVER-CONTROL switch to
( 3 ) RECEIVER-CONTROI, switch to
RECEIVER.
RECEIVER.
(3) GONIO DRIVE switch to ON.
d. Set the range switch on the control unit
d. Refer to figure 2-7. Unsolder and disconnect
to 190-400, and adjust the TUNE control on
the negative lead of capacitor C153.
the control unit to 200 kc.
e. Select a capacitor combination listed in the
e. Modulate the signal generator output 30
chart below. Connect the capacitor combination
between the positive leads of capacitors C151 and
"percent with 400 cps, and adjust the output
C153.
for 1000 microvolt.
3-26 Change 5
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