Receiver Section; Adjustment Points - Kenwood TK-3230 Service Manual Addendum

Receiver Section

Item Condition
1. Sensitivity 1) Test mode
(Wide) CH: RX low, high
SSG output: –117dBm (0.32µV)
SSG MOD: 1kHz
SSG DEV: ±3kHz
(Narrow) 2) Test mode
CH: RX low, high
SSG output: –116dBm (0.35µV)
SSG MOD: 1kHz
SSG DEV: ±1.5kHz
2. Squelch 1) PC tune
level (open) CH: RX center (Wide)
SSG output: –121dBm
SSH MOD: 1kHz
SSG DEV: ±3.0kHz
2) PC tune
CH: RX center (Narrow)
SSG output: –120dBm
SSH MOD: 1kHz
SSG DEV: ±1.5kHz

Adjustment Points

TXD
LCD
ANT
BATT+
VR300
BATT–
TX-RX unit
Foil side
ADJUSTMENT
Measurement
Test-
Unit Terminal
equipment
SSG ANT
Oscilloscope Jig cable
AF V.M SP/MIC
Distortion jack
meter
PTT
LV
3C
RSSI
BUSY
3T
3M
TX-RX unit
Component side
J300
LV
EXT. SP/MIC
TC1
BPF
S1
PTT
Adjustment
Unit Parts Method
Check
PC Adjust to open the
key squelch.
BATT+
INT. SP+
INT. SP–
SB
BATT+/–: External power supply
terminal (Fasten it with an alligator clip)
BATT–
VR301
MIC
TC1: VCO lock voltage adjustment
LV: VCO lock voltage measurement
VR300: DQT balance adjustment
TK-3230
Specifi cations / Remarks
SINAD: 12dB or more
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