Yaesu FT-450D, Technical Supplement

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ALIGNMENT-2
Alignment
FT-450 Series Technical Supplement
Reference Frequency

Connect the Frequency Counter to TP2001 on the
RF-IF-Unit.

Adjust X2001 so that the Frequency Counter read-
ing is 22.625 MHz ±10 Hz.
2nd Local Carrier Output Level

Connect the RF millivoltmeter to TP2009 on the
RF-IF-Unit.

Adjust T2017 on the RF-IF-Unit for maximum
deflection on the RF millivoltmeter (more than
25 mVrms).
PLL VCV Voltage

Connect the Digital DC voltmeter (high-Z) to
TP2006 on the RF-IF-Unit.

Set the [ MODE ] switch to FM.

Referring to the table below, adjust the listed com-
ponents for the required voltage, or confirm that
the correct voltage is present on each frequency
listed.
RX IF Circuit (SSB/CW)

Set the following controls as indicated:
[
IPO ]: OFF
[ ATT ]: OFF
[ RF GAIN ] knob: Fully clockwise

Connect the AF millivoltmeter and 4 Ohm
dummy load to the EXT SPKR jack.

Connect the RF Signal Generator to the "ANT"
jack, and then set the output level to 0 dB
μ V at
the 51.995 MHz.

Set the transceiver to 51.995 MHz in the CW
mode.

Adjust T2020 on the RF-IF-Unit for maximum
deflection on the AF millivoltmeter.
RX IF Circuit (FM)

Set the following controls as indicated:
[
IPO
]: OFF
[
ATT
]: OFF
[ RF GAIN ] knob: Fully clockwise

Connect the SINAD meter and 4-Ohm dummy
load to the EXT SPKR jack.

Connect the RF Signal Generator to the "ANT"
jack, and then set the RF Signal Generator to
51.995 MHz at the level of 0 dB
μ V, ± 3.0 kHz de-
viation with a 1 kHz audio tone.

Set the transceiver to 51.995 MHz in the FM mode.

Adjust T2021 and T2022 on the RF-IF-Unit for
maximum deflection on the SINAD meter.
VFO-A F
REQUENCY
13.499 MHz
0.030 MHz
29.999 MHz
13.500 MHz
44.499 MHz
30.000 MHz
55.999 MHz
44.500 MHz
A
DJUST
/ C
ONFIRM
Adjust L2065
Confirm
Adjust L2066
Confirm
Adjust L2067
Confirm
Adjust L2068
Confirm
DC
VOLTMETER
5.2 V ± 0.1 V
At least 0.5 V
5.2 V ± 0.1 V
At least 0.5 V
5.2 V ± 0.1 V
At least 0.7 V
5.2 V ± 0.1 V
At least 0.7 V
TX IF Circuit (SSB/CW)

Connect the 50-Ohm Dummy Load and Wattme-
ter to the "ANT" jack.

Disconnect the TMP plug from J2002 on the RF-
IF-Unit, and then connect the RF millivoltmeter
and 50 Ohm dummy load to J2002.

Inject the 1 mV, 1 kHz audio signal to pin 5 of
MIC jack.

Set the transceiver to 7.000 MHz, USB mode.

Press the PTT button; adjust T2018, T2019, T2021,
and T2022 on the RF-IF-Unit for maximum de-
flection on the RF millivoltmeter.

Disconnect the RF millivoltmeter and 50 Ohm
dummy load from J2002 on the RF-IF-Unit, then
re-connect the TMP plug to J2002.