Yaesu FT-7900E, Technical Supplement

Page: 11 / 50

FT-7900R/E Technical Supplement
Alignment
TX Power Output
1. Press the [ BAND
(
SET
)] key, then rotate the
DIAL knob
to set the display to “
B5006
”. Set the Transmit Power
Level to “LOW” by pressing the [ LOW
(
ACC
)] key
repeatedly.
2. Press the [ BAND
(
SET
)] key while pressing and hold-
ing in the [
(
L
)] key to set the Alignment parameter
to “
A-2 PWR.xxH
.”
3. Press the PTT switch to activate the transmitter, and
adjust the DIAL knob while pressing and holding in
the [
(
L
)] key, if needed, so that the wattmeter read-
ing is 5 Watts (±0.5 Watt).
4. Press the [ LOW
(
ACC
)] key to increase the Transmit
Power Level to “MID2”.
5. Press the PTT switch to activate the transmitter, and
adjust the DIAL knob while pressing and holding in
the [
(
L
)] key, if needed, so that the wattmeter read-
ing is 10 Watts (±0.5 Watt).
6. Press the [ LOW
(
ACC
)] key to increase the Transmit
Power Level to “MID1.”
7. Press the PTT switch to activate the transmitter, and
adjust the DIAL knob while pressing and holding in
the [
(
L
)] key, if needed, so that the wattmeter read-
ing is 20 Watts (±0.5 Watt).
8. Press the [ LOW
(
ACC
)] key to increase the Transmit
Power Level to “HIGH.”
9. Press the PTT switch to activate the transmitter, and
adjust the DIAL knob while pressing and holding in
the [
(
L
)] key, if needed, so that the wattmeter read-
ing is 45 Watts (±0.5 Watt).
10. Press the [ BAND
(
SET
)] key, then rotate the
DIAL knob
to set the display to “
B0206
”. Set the Transmit Power
Level to “LOW” by pressing the [ LOW
(
ACC
)] key
repeatedly.
11. Press the PTT switch to activate the transmitter, and
adjust the DIAL knob while press and holding the
[ (
L
)] key, as needed, so that the wattmeter reading
is 5 Watts (±0.5 Watt).
12. Press the [ LOW
(
ACC
)] key to increase the Transmit
Power Level to “MID2.”
13. Press the PTT switch to activate the transmitter, and
adjust the DIAL knob while pressing and holding in
the [
(
L
)] key, if needed, so that the wattmeter read-
ing is 10 Watts (±0.5 Watt).
14. Press the [ LOW
(
ACC
)] key to increase the Transmit
Power Level to “MID1.”
15. Press the PTT switch to activate the transmitter, and
adjust the DIAL knob while pressing and holding in
the [
(
L
)] key, if needed, so that the wattmeter read-
ing is 20 Watts (±0.5 Watt).
16. Press the [ LOW
(
ACC
)] key to increase the Transmit
Power Level to “HIGH.”
17. Press the PTT switch to activate the transmitter, and
adjust the DIAL knob while pressing and holding in
the [
(
L
)] key, if needed, so that the wattmeter read-
ing is 50 Watts (±0.5 Watt).
TX Deviation
1. Press the [ BAND
(
SET
)] key, then rotate the
DIAL knob
to set the display to “
B5006
”. Set the Transmit Power
Level to “LOW” by pressing the [ LOW
(
ACC
)] key
repeatedly.
2. Press the [ BAND
(
SET
)] key while pressing and hold-
ing in the [
(
L
)] key to set the Alignment parameter
to “
A-3 DEV.xxH
.”
3. Inject a 1 kHz audio tone at a level of 80 mV (–20 dBm)
from the Audio Generator.
4. Press the PTT switch to activate the transmitter, and
adjust the DIAL knob while pressing and holding in
the [
(
L
)] key, if needed, so that the deviation meter
reading is 4.5 kHz (±0.2 kHz).
5. Press the [ BAND
(
SET
)] key, then rotate the
DIAL knob
to set the display to “ B0206 ”. Set the Transmit Power
Level to “LOW” by pressing the [ LOW
(
ACC
)] key
repeatedly.
6. Press the PTT switch to activate the transmitter, and
adjust the DIAL knob while pressing and holding in
the [
(
L
)] key, if needed, so that the deviation meter
reading is 4.5 kHz (±0.2 kHz).
E-3