Yaesu FT-100 Technical Supplement page 6

Alignment
Local Oscillator Adjustments
Reference Frequency Adjustment
m Remove the coaxial plug from J2005 and connect the
frequency counter across its socket.
m Adjust trimmer capacitor TC2801 or X2901 (use TCXO-
8) for 57.279999 MHz ± 60 Hz or 30 Hz (use TCXO-8)
on the frequency counter.
m Disconnect the frequency counter, and replace the plug
into J2005.
2 Local Adjustment
nd
m Connect the 50-W resistor and RF millivoltmeter to
J2005.
m Adjust T2003 and T2004 for maximum indication on
the RF millivoltmeter (at least 180 mV).
m Disconnect the frequency counter, and replace the plug
into J2005.
3 Local Adjustment
rd
m Set the RF power to the minimum (using Menu #21),
and select the CW mode. Connect the 50-W resistor and
RF millivoltmeter to J2004.
m Key the transmitter, and adjust T2001 and T2002 for
maximum indication on the RF millivoltmeter (at least
80 mV).
m Replace the RF millivoltmeter with the frequency
counter, and confirm that the local frequency is 11.705
MHz (±1 kHz) on the frequency counter.
m Disconnect the frequency counter, and replace the plug
into J2004.
PLL Adjustments
VCO VCV Adjustment
m Connect the DC voltmeter to TP2001, and referring to
table below, tune the transceiver to each frequency list-
ed. Then confirm that the correct voltage is present, or
adjust the listed component for the required voltage.
Tune to: Adjust/Confirm
449.99999 MHz Adjust TC2005
420.00000 MHz Confirm
381.99999 MHz Adjust TC2006
108.00000 MHz Confirm
245.99999 MHz Adjust TC2004
60.00000 MHz Confirm
197.99999 MHz Adjust TC2003
33.00000 MHz Confirm
170.99999 MHz Adjust TC2002
15.00000 MHz Confirm
14.99999 MHz Adjust TC2001
0.03000 MHz Confirm
6
1 Local Output Level
st
m With the 50-W resistor and RF millivoltmeter connect-
ed to the J2003, and referring to table below, tune the
transceiver to each frequency listed, then confirm that
the required output level is present at the listed frequency.
Tune to:
14.175 MHz
146.500 MHz
440.500 MHz
PA Unit Adjustments
Before beginning, remove the coaxial plugs from J3503
and J3005, and connect 50-W resistors across the sockets
for these jacks (shunt to ground at each jack).
HF/50MHz Driver Section Idling Current
m Remove the coaxial plug from J3001, and connect a 50-W
resistor across its socket. Remove the jumper connec-
tor at J3504. Connect the ammeter to J3504 (pin 1: "–"
lead, pin 2: "+" lead).
m Tune the transceiver to the 14.2000 MHz and select the
USB mode.
m Key the transmitter, and adjust VR3004 for a reading of
50 ~ 55 mA on the ammeter.
m Disconnect the ammeter, and reinstall the jumper con-
nector at J3504.
m Remove the jumper connector at J3003. Connect the am-
meter to J3003 (pin 1: "–" lead, pin 2: "+" lead).
m Key the transmitter, and adjust VR3001 for a reading of
1.1 A on the ammeter (within 60 mA).
m Disconnect the ammeter, and reinstall the jumper con-
nector at J3003.
HF/50 MHz Final Idling Current Adjustment
m Leave the coaxial plug disconnected from J3001, and
be sure that the 50-W resistor is connected across its
For
socket. Connect the ammeter between the transceiver's
7.4 V ±0.1 V
13.8VDC connector and the DC power supply.
2.0 V ~ 4.8 V
m Tune the transceiver to the 14.2000 MHz and select USB
7.4 V ±0.1 V
mode.
1.2 V ~ 4.0 V
m Key the transmitter, and adjust VR3002 for a reading of
7.4 V ±0.1 V
1.6 A on the ammeter (within 50 mA).
0.8 V ~ 4.0 V
m Adjust the VR3003 for a reading of 2.1 A (±50 mA) on
7.4 V ±0.1 V
the ammeter.
1.2 V ~ 4.0 V
7.4 V ±0.1 V
VHF/UHF Driver Section Idling Current
1.4 V ~ 4.2 V
m Remove the coaxial plug from J3501, and connect a 50-W
7.4 V ±0.1 V
resistor across its socket. Remove the jumper connec-
1.5 V ~ 4.0 V
tor at J3502. Connect the ammeter to J3502 (pin 1: "–"
lead, pin 2: "+" lead).
For
11 dBm ±3 dB
52.050 MHz 11 dBm ±3 dB
11 dBm ±3 dB
11 dBm ±3 dB