Yaesu FT-100 Technical Supplement page 8

Alignment
m Select "Alignment" menu item F-05 [144 RX IF G] and
adjust the main DIAL for a 1-dot S-meter deflection.
430 MHz Band RX Gain Adjustment
m Connect the RF signal generator to the VHF/UHF an-
tenna jack.
m Set the transceiver to 435.500 MHz, and select the USB
mode.
m Inject an RF signal from the signal generator at +1.0
dBµ on 435.500 MHz.
m Select "Alignment" menu item F-06 [430 RX IF G] and
adjust the main DIAL for a 1-dot S-meter deflection.
S-meter Full Scale Alignment
m Connect the RF signal generator to the HF/50 MHz an-
tenna jack.
m Set the transceiver to 14.200 MHz, and select the USB
mode.
m Inject an RF signal from the signal generator at +95dBµ
on 14.20000 MHz.
m Select "Alignment" menu item F-07 [S FULL SCALE]
and adjust the main DIAL for a S9+60dB reading on
the S-meter.
Squelch Threshold Level Adjustment
m Select the USB mode, and inject no signal to the anten-
na jack. Leave the radio set to 14.200 MHz.
m Set the SQL control to the 11 o'clock position. Select
"Alignment" menu item F-08 [SSB SQL] and adjust the
main DIAL so that the squelch just closes.
m Set the SQL control to the 1 o'clock position, and select
the FM mode. Select "Alignment" menu item F-10 [FM
RF SQL] and adjust the main DIAL so that the squelch
just closes.
m Set the SQL control to the 10 o'clock position. Select
"Alignment" menu item F-09 [FM N SQL] (Noise
Squelch) and adjust the main DIAL so that the squelch
just closes.
Noise Blanker Alignment
m Connect the RF signal generator to the HF/50 MHz an-
tenna jack, and connect the DC voltmeter to TP1010.
m Press the NB key to activate the Noise Blanker, then
press and hold in the NB key for ½ second to activate
Menu #60 (NB Level). Set the Noise Blanker level to
maximum. Inject an RF signal from the signal genera-
tor at +20 dBµ.
m Adjust T1029 and T1031 for minimum indication on
the DC voltmeter (the voltage will be at least 3.0 V).
8
TX Adjustments
HF/50 MHz band TX IF Transformers
m Connect the inline wattmeter and 50 W dummy load to
the HF/50 MHz antenna jack.
m Use Menu #21 to set the RF power for maximum, and
tune the transceiver to 14.2000 MHz. Select the CW
mode.
m Key the transmitter, and adjust T1008, T1011, T1014,
T1020, and T1022 for maximum indication on the in-
line wattmeter.
144/430 MHz band TX IF Transformers
m Connect the inline wattmeter and 50 W dummy load to
the VHF/UHF antenna jack.
m Use Menu #23 to set the 144 MHz RF power for maxi-
mum, and tune the transceiver to the 145.0000 MHz.
Select the CW mode.
m Key the transmitter, and adjust T1018, T1021, T1024,
and T1026 for maximum indication on the inline watt-
meter.
Trap Adjustment
m Remove the coaxial plug from J1012, and connect the
spectrum analyzer across its socket. Tune the transceiv-
er to 144.0000 MHz, and select the FM mode.
m Key the transmitter, and adjust TC1001 for minimum
indication on the 137.97 MHz spurious response on the
spectrum analyzer.
m Disconnect the spectrum analyzer, and replace the plug
into J1012.
CM Coupler Balance
m Connect the 50-W dummy load to the HF/50 MHz an-
tenna jack, and connect the DC voltmeter to L5028 lead
(near TC5002 side). Set the transceiver to 52.0000 MHz,
and select the FM mode. Use Menu #22 to set the 50
MHz RF power to maximum.
m Key the transmitter with no microphone input, and ad-
just TC5002 for 0 V on the DC voltmeter.
m Connect the 50-W dummy load to the VHF/UHF anten-
na jack, and connect the DC voltmeter to L5023 lead
(near L5029 side). Set the transceiver to 145.5000 MHz,
and select FM mode. Use Menu #23 to set the 144 MHz
RF power to maximum.
m Key the transmitter with no microphone input, and ad-
just TC5001 for 0 V on the DC voltmeter.
m Connect the DC voltmeter to L5024 lead (near JP5004
side). Set the transceiver to the 439.5000 MHz, and se-
lect FM mode. Use Menu #24 to set the 430 MHz RF
power to maximum.