Kenwood TK-290 Service Manual page 40
Vhf fm transceiver
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Also See for TK-290:
- Service manual (65 pages) ,
- Instruction manual (25 pages) ,
- Quick manual (4 pages)
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TK-290
Common Section
Item
Condition
1. Varicap shift 1) Set panel tuning mode
voltage
Push Side2 to select
∗ ∗
Mid
VSWM
High
2) Push Side2 to select
∗ ∗ ∗
VSWH
2. Voltage change 1) Set panel tuning mode
frequency
Push Side2 to select
∗ ∗ ∗
∗ ∗ ∗
Low–Mid
.
RX
r1
TX
2) Push Side2 to select
∗ ∗ ∗
∗ ∗ ∗
.
t1
Mid–Hi
3) Push Side2 to select
∗ ∗ ∗
∗ ∗ ∗
RX
.
r2
TX
4) Push Side2 to select
∗ ∗ ∗
∗ ∗ ∗
.
t2
Transmitter Section
Item
Condition
1. Frequency
1) Set panel test mode
adjustment
CH No. : 3
Signalling No. : 1
Select FRQ
in panel tuning mode
PTT : ON
2. Maximum
1) Set panel test mode
power
CH No. : 3
check
Signalling No. : 1
BATT terminal voltage : 7.5V
Select POW 255
in panel tuning mode
PTT : ON
3. TX high
1) Set panel test mode
power
CH No. : 3
adjustment
Signalling No. : 1
Select POW
in tuning mode
Push Orange to 3 point
adjustment mode
Select POW
L
PTT : ON
2) Push Side2 to select
∗ ∗ ∗
POW
M
PTT : ON
3) Push Side2 to select
∗ ∗ ∗
POW
H
PTT : ON
40
Measurement
Test-
Unit
equipment
DC VTVM TX-RX TP2
Caution : When adjusting transmit power and sensitivity, connect the cable to the SMA antenna connector on
the top panel. At this time, use the antenna-less type jig connector (E30-3287-08) in the universal connector.
Measurement
Test-
Unit
equipment
Power meter Panel
f. counter
∗ ∗ ∗
Power meter Panel
Ammeter
∗ ∗ ∗
∗ ∗ ∗
Adjustment
Terminal
Unit
Parts
Panel
Top1/
–3V
Top2
–6V
TP1
4.15V
4.15V
4.15V
4.15V
Adjustment
Terminal
Unit
Parts
ANT
Panel
Top1/
155.100MHz
Top2
ANT
Check
Panel
Top1/
4.70W
Top2
Specifications/Remarks
Method
±0.1V
±0.1V
±0.05V
±0.05V
±0.05V
±0.05V
Specifications/Remarks
Method
±50Hz
5.0W or more
±0.1W
2.3A or less
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