Kenwood TK-8102 Service Manual

TK-8102
12
INSTALLATION
1. Optional Board
1-1. Voice Scrambler Board Connection
■ Modification
1. Remove the cabinet and shielding cover from the trans-
ceiver.
2. Delete R202 and R267 on the TX-RX unit.
A
9
8
7
D
C
B
A
A12
1
3
7
8
9
10
11
12
1
12
BA11
CA10
DA9
E
1
2
3
4
5B5
6B7
7A8
8A7
9A3
10B11
11B9
12B4
E18
Voice scrambler
board
12 pins lead wire
with connector (A)
E37-1081-05
CN2
12
6
5
11
10
1
4
5
7
9
11
1
11
11 pins lead wire
with connector (B)
E37-1080-05
CN3
■ Connection
The functions of pins of CN2 and CN3 on the TX-RX unit
are shown in the TERMINAL FUNCTION section (page 37).
Fig. 1
Fig. 2
R267
CN3
R202
TX-RX UNIT
Component side
■ Pins Connection
Voice scrambler 12 pins lead wire 11 pins lead wire
functions with connector (A) with connector (B)
A A-12 –
B A-11 –
C A-10 –
D A-9 –
5– B-5
6– B-7
7 A-8 –
8 A-7 –
9 A-3 –
10 – B-11
11 – B-9
12 – B-4
■ Setting With the KPG-70D
Select “External Devices” from the “Edit” menu and set
the “Scrambler”.
Note :
The voice scrambler board is connected subsequent to the
de-emphasis circuit.
Cushion (G13-1963-04)
Cushion (G13-1964-04)
Voice scrambler board
Front side
to CN2 and CN3
to CN2
and CN3
CN3
Voice scrambler
board
CN2
TX-RX UNIT
Component side
Fig. 3

Kenwood TK-8102 Specifications

Frequency and Channels

frequency range M	450 to 490MHz
frequency range M2	485 to 520MHz
frequency range M3	400 to 430MHz
number of channels	4 channels
channel spacing wide	25kHz
channel spacing narrow	12.5kHz
PLL channel stepping	5, 6.25kHz

Power

operating voltage	13.6V DC ±15%
current drain standby	Less than 0.4A
current drain receive	Less than 1.0A
current drain transmit	Less than 8.0A

Operating Environment

operating temperature range	–30°C to +60°C
dimensions	160 (W) x 43 (H) x 107 (D) mm
weight	Approx 1.0kg

Receiver Specifications

sensitivity 12dB SINAD wide	0.28µV
sensitivity 12dB SINAD narrow	0.35µV
selectivity wide	75dB
selectivity narrow	65dB
intermodulation wide	70dB
intermodulation narrow	60dB
spurious response	75dB
audio power output	4.0W
frequency stability	±2.5ppm

Transmitter Specifications

RF power output	25W
spurious and harmonics	70dB
modulation wide	16K0F3E
modulation narrow	11K0F3E
FM noise wide	45dB
FM noise narrow	40dB
audio distortion	Less than 3%
frequency stability	±2.5ppm