Panel Tuning Mode; Preparations For Tuning The Transceiver; Transceiver Tuning (To Enter Tuning Mode); Analog Mode Signaling - Kenwood NX-300 Service Manual

NX-300

• Analog mode signaling

No. RX
1 None
2 None
LTR Data:
AREA=0, GOTO=12
3
HOME=12
ID=47, FREE=25
4 QT: 67.0Hz
5 QT: 151.4Hz
6 QT: 210.7Hz
7 QT: 254.1Hz
8 DQT: D023N
9 DQT: D754I
10 DTMF: 159D
11 None
2-tone:
12 A: 304.7Hz
B: 3106.0Hz
13 Single Tone: 979.9Hz
14 None
15 None
16 MSK
• NXDN mode signaling
No. RX
1 RAN1
2 None
3 RAN1
RAN: Radio Access Number
PN9: Pseudo-Random Pattern (for production only)

Panel Tuning Mode

■ Preparations for tuning the transceiver

Before attempting to tune the transceiver, connect the
unit to a suitable power supply.
Whenever the transmitter is turned, the unit must be
connected to a suitable dummy load (i.e. power meter).
The speaker output connector must be terminated with
a 8Ω dummy load and connected to an AC voltmeter and an
audio distortion meter or a SINAD measurement meter at all
times during tuning.

■ Transceiver tuning (To enter tuning mode)

To enter tuning mode, press the [ ] key while the trans-
ceiver is in test mode. Use the [ ] key to write tuning data
through tuning modes, and the [
requirements (1 to 4096 appears on the LCD).
Use the [ ] key to select the adjustment item through
tuning modes. Use the [ ] key to adjust 5 reference level
adjustments, and use the [Side2] key to switch between
Wide/Narrow/Very narrow.
38
ADJUSTMENT
TX
None
100Hz Square Wave
LTR Data:
AREA=0, GOTO=12
HOME=12
ID=47, FREE=25
QT: 67.0Hz
QT: 151.4Hz
QT: 210.7Hz
QT: 254.1Hz
DQT: D023N
DQT: D754I
DTMF: 159D
DTMF Code 9
2-tone:
A: 304.7Hz
B: 3106.0Hz
Single Tone: 979.9Hz
Single Tone: 1000Hz
MSK
MSK
TX
RAN1
PN9
Maximum deviation pattern
]/[ ] key to adjust tuning
• LCD display in panel tuning mode
CV voltage, AD value, etc
Sub LCD display 2.6
An
Main LCD display
Adjustment
point
L,L',C,H',H
An: Analog narrow mode
Aw: Analog wide mode
Nn: NXDN narrow mode
Nv: NXDN very narrow mode
■ Key operation
Key
Push
[Selector]
[ ] Adjustment value up
[ ] Adjustment value down
[Side1] Auto adjustment start
[Side2] Wide/Narrow/Very narrow -
[ ] Shift to panel test mode
To enter 5 reference level
[ ]
adjustments
Writes the adjustment
[ ]
value
Go to next adjustment
[ ]
item
[Orange]
[PTT]
[0] to [9]
and
[#], [ ]
■ 5 reference level adjustments frequency
K,K3
Tuning
point
RX (MHz) TX (MHz)
Low 450.05000 450.10000
Low' 467.55000 467.60000
Center 485.05000 485.10000
High' 502.55000 502.60000
High 519.95000 519.90000
CNTR 256
Adjustment value
(1~4096)
Proper value guide
(When the frequency
adjustment is necessary,
▼ or ▲ is displayed.)
Adjustment item
Function
Hold (1 second)
-
Continuation up
Continuation down
-
-
-
-
Back to last adjustment
item
-
Transmit
-
K2,K4
RX (MHz) TX (MHz)
400.05000 400.10000
417.55000 417.60000
435.05000 435.10000
452.55000 452.60000
469.95000 469.90000