Yaesu FT-7800R, Technical Supplement

Page: 11 / 48

Alignment
TX Power Output
1. Tune the frequency to 440.050 MHz, then set the Trans-
mit Power Level to “LOW.”
2. Press the [ BAND
(
SET
)] key while pressing and hold-
ing in the [
] 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 [
] key, if needed, so that the wattmeter reading
is 5 Watts (±0.5 Watt).
4. 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 [
] key, if needed, so that the wattmeter reading
is 10 Watts (±0.5 Watt).
6. 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 [
] key, if needed, so that the wattmeter reading
is 20 Watts (±0.5 Watt).
8. 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 [
] key, if needed, so that the wattmeter reading
is 40 Watts (±0.5 Watt).
10. Tune the frequency to 146.050 MHz, then set the Trans-
mit Power Level to “LOW.”
11. Press the PTT switch to activate the transmitter, and
adjust the DIAL knob while press and holding the [%]
key, as needed, so that the wattmeter reading is 5 Watts
(±0.5 Watt).
12. 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 [
] key, if needed, so that the wattmeter reading
is 10 Watts (±0.5 Watt).
14. 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 [
] key, if needed, so that the wattmeter reading
is 20 Watts (±0.5 Watt).
16. 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 [
] key, if needed, so that the wattmeter reading
is 50 Watts (±0.5 Watt).
TX Deviation
1. Tune the frequency to 440.050 MHz, then set the Trans-
mit Power Level to “LOW.”
2. Press the [ BAND
(
SET
)] key while pressing and hold-
ing in the [
] 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 [
] key, if needed, so that the deviation meter
reading is 4.2 kHz (±0.2 kHz) (EXP Version: 4.5 kHz
(±0.2 kHz)).
5. Tune the frequency to 146.050 MHz, then set the Trans-
mit Power Level to “LOW.”
6. Press the PTT switch to activate the transmitter, and
adjust the DIAL knob while pressing and holding in
the [
] key, if needed, so that the deviation meter
reading is 4.2 kHz (±0.2 kHz) (EXP Version: 4.5 kHz
(±0.2 kHz)).
DCS TX Deviation
1. Tune the frequency to 440.050 MHz, then activate the
DCS with a “023” DCS code, and set the Transmit
Power Level to “LOW.”
2. Press the [ BAND
(
SET
)] key while pressing and hold-
ing in the [
] key to set the Alignment parameter to
“
A-4 DSC.xxH
.”
3. Press the PTT switch to activate the transmitter (with
no microphone input), and adjust the DIAL knob while
pressing and holding in the [
] key, if needed, so that
the deviation meter reading is between 0.50 kHz and
0.60 kHz.
4. Tune the frequency to 146.050 MHz, then activate the
DCS with a “023” DCS code, and set the Transmit
Power Level to “LOW.”
5. Press the PTT switch to activate the transmitter (with
no microphone input), and adjust the DIAL knob while
pressing and holding in the [
] key, if needed, so that
the deviation meter reading is between 0.50 kHz and
0.60 kHz.
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