Yaesu FT-1807M, Technical Supplement

Page: 11 / 34

11
Squelch Threshold Level
ˆ
Inject a 435.100 MHz signal at a level of –14 dBµ
(with 1 kHz modulation @±3.5 kHz deviation)
from the RF signal generator.
ˆ
Rotate the
SQL
knob to the 10-o’clock position.
ˆ
Rotate the
DIAL
knob to set the alignment param-
eter to “
435.100 tL 435.100 tL
435.100 tL 435.100 tL
435.100 tL
.”
ˆ
Press the [
D/MR
(
MW
)] key to enable adjustment
of the “Squelch Threshold Level.”
ˆ
Press the [
D/MR
(
MW
)] key three times.
ˆ
Press the [
D/MR
(
MW
)] key.
S-meter Level (S-1)
ˆ
Inject a 435.100 MHz signal at a level of –5 dBµ
(with 1 kHz modulation @±3.5 kHz deviation)
from the RF signal generator.
ˆ
Rotate the
DIAL
knob to set the alignment param-
eter to “
435.100 S1 435.100 S1 435.100 S1 435.100 S1 435.100 S1
.”
ˆ
Press the [
D/MR
(
MW
)] key to enable adjustment
of the “S-meter Level (S-1).”
ˆ
Press the [
D/MR
(
MW
)] key three times.
ˆ
Press the [
D/MR
(
MW
)] key.
S-meter Level (S-9)
ˆ
Inject a 435.100 MHz signal at a level of +23 dBµ
(with 1 kHz modulation @±3.5 kHz deviation)
from the RF signal generator.
ˆ
Rotate the
DIAL
knob to set the alignment param-
eter to “
435.100 S9 435.100 S9
435.100 S9 435.100 S9
435.100 S9
.”
ˆ
Press the [
D/MR
(
MW
)] key to enable adjustment
of the “S-meter Level (S-9).”
ˆ
Press the [
D/MR
(
MW
)] key three times.
ˆ
Press the [
D/MR
(
MW
)] key.
TX Power (High)
ˆ
Rotate the
DIAL
knob to set the alignment param-
eter to “
435.000 HP 435.000 HP
435.000 HP 435.000 HP
435.000 HP
.”
ˆ
Press the [
D/MR
(
MW
)] key to enable adjustment
of the “TX Power (High).”
ˆ
Press the
PTT
switch to activate the transmitter,
adjust the
DIAL
knob so that the RF Power Meter
reading is 50 W (±1.0W).
ˆ
Press the [
D/MR
(
MW
)] key.
TX Power (Low 3)
ˆ
Rotate the
DIAL
knob to set the alignment param-
eter to “
435.000 L3 435.000 L3
435.000 L3 435.000 L3
435.000 L3
.”
ˆ
Press the [
D/MR
(
MW
)] key to enable adjustment
of the “TX Power (Low 3).”
ˆ
Press the
PTT
switch to activate the transmitter,
adjust the
DIAL
knob so that the RF Power Meter
reading is 25 W (±1.0 W).
ˆ
Press the [
D/MR
(
MW
)] key.
TX Power (Low 2)
ˆ
Rotate the
DIAL
knob to set the alignment param-
eter to “
435.000 L2 435.000 L2
435.000 L2 435.000 L2
435.000 L2
.”
ˆ
Press the [
D/MR
(
MW
)] key to enable adjustment
of the “TX Power (Low 2).”
ˆ
Press the
PTT
switch to activate the transmitter,
adjust the
DIAL
knob so that the RF Power Meter
reading is 10 W (±0.5 W).
ˆ
Press the [
D/MR
(
MW
)] key.
TX Power (Low 1)
ˆ
Rotate the
DIAL
knob to set the alignment param-
eter to “
435.000 L1 435.000 L1
435.000 L1 435.000 L1
435.000 L1
.”
ˆ
Press the [
D/MR
(
MW
)] key to enable adjustment
of the “TX Power (Low 1).”
ˆ
Press the
PTT
switch to activate the transmitter,
adjust the
DIAL
knob so that the RF Power Meter
reading is 5 W (±0.5 W).
ˆ
Press the [
D/MR
(
MW
)] key.
TX Deviation
ˆ
Inject a 1 kHz, 50 mV signal from the Audio Gen-
erator.
ˆ
Rotate the
DIAL
knob to set the alignment param-
eter to “
435.000 dU 435.000 dU
435.000 dU 435.000 dU
435.000 dU
.”
ˆ
Press the [
D/MR
(
MW
)] key to enable adjustment
of the “TX Deviation.”
ˆ
Press the
PTT
switch to activate the transmitter,
adjust the
DIAL
knob so that the Deviation Meter
reading is 4.2 kHz (±0.1 kHz).
ˆ
Press the [
D/MR
(
MW
)] key.
Alignment