Yaesu FT-736R Technical Supplement page 129

E.
1.2 GHz PLL Overall Check (on 1.2
GHz PLL Unit - requires 50-ohm, 4-
watt resistor and RF voltmeter)
1. Disconnect the TMP plug from
PJ1002 and connect the 50-ohm
resistor and RF voltmeter in its
place.
2. Tune the transceiver to 1280.00000
MHz, FM mode, and confirm about
-15dBm on the voltmeter.
3. Move the resistor and meter from
PJ1002 to PJ1001 and confirm
about +5dBm on the RF voltmeter.
4. Remove the resistor and meter,
and replace the TMP plugs.
+ 1.2 GHz RX RF (on 1.2 GHz RF Unit-
requires tracking generator and spec-
trum analyzer)
1. Connect the tracking generator to
PJ2002 and the analyzer to PJ2003.
Set the tracking generator level to
about -30dBm, reducing the level
during adjustment, if necessary, to
avoid saturation.
2. Adjust CV2001
shown below.
3. Remove the test equipment.
for the passband
1270MHz
13OOMHz
1.2 GHz RX IF (on 1.2 GHz RF Unit
- requires RF generator)
1. Connect the RF generator to the
1.2 GHz antenna jack.
2. Set the transceiver to FM, METER
selector to S/PO and RF gain
fully clockwise.
3. Tune the RF generator and trans-
ceiver to 1280.00000 MHz, and
inject +7 kHz deviation of a 1
kHz tone at a level sufficient to
produce S-7 deflection on the S-
meter.
4. Adjust T2001-T2010 for peak S-
meter deflection.
(FEX-736-1.2) ALIGNMENT
H. 1.2 GHz Module Gain (on 1.2 GHz RF
Unit - requires RF generator)
1. Connect the RF generator to the
1.2 GHz antenna jack.
2. Set the transceiver to USB, METER
selector to S/PO and RF gain
fully clockwise.
3. Tune to 1280.00000 MHz.
4. Inject a 20dBu carrier with no
modulation 1.5 kHz above the
transceiver frequency, and adjust
VR2004 for S-9 S-meter deflection.
5. Tune the transceiver and RF gen-
erator as indicated below, and
confirm that the injection level
required for S-9 indication is
within +3dB of that required at
1280.00000 MHz.
Transceiver
1299.99999 MHz
1260.00000 MHz
RF_ Generator
1300.00149 MHz
1260.00150 MHz
6. Connect the jumper plug at J2001
and retune the transceiver to
1280.00000 MHz.
7. Inject a 40dB carrier with no
modulation 1.5 kHz above the
transceiver frequency, and adjust
TC2001 for S-9 S-meter deflection.
1.2 GHz Receiver Overall Check
1, Connect the test equipment as
shown below.
EXT SPRR
2. Select the FM mode, set the
METER selector to S/PO, SQL fully
counterclockwise, AF gain to 10
o'clock and RF gain fully clock-
wise.
3. Tune the transceiver and RF gen-
erator to 1280.00000 MHz. Inject a
1 kHz tone with +3.5 kHz
deviation, and confirm a 12dB
SINAD better than -9dB.