Kenwood TH-K20A Service Manual page 21

Item Condition
7. Battery 1) BATT terminal voltage: 7.1V
Detection PTT: ON
Check TX Power: Low
(User mode) Battery type: Li-ion
2) BATT terminal voltage: 7.8V
PTT: ON
TX Power: Low
Battery type: Li-ion
• This transceiver is designed to make adjustments simple.
• It is not necessary to adjust the fi xed values for the DTMF-DEV, DQT-DEV, QT-DEV, and MIC sensitivity.
• The TX-DEV Narrow setting uses the Wide calculated adjustment level value.
Receiver Section
Item Condition
1. Band Pass 1) Tuning point: Low, Center,
Filter High (3 points)
SSG output: –90dBm
(7.08µV)
SSG DEV: 3.0kHz
2. Sensitivity 1) Tuning point: Low, High
Check (2 points)
[Narrow] SSG output: –120dBm
(0.22µV)
SSG DEV: 1.5kHz
3. Squelch 1) Tuning point: Low, Center,
Level 2 Write High (3 points)
[Wide] SSG output: –121dBm
(0.2µV)
SSG DEV: 3.0kHz
[Narrow] 2) Tuning point: Low, Center,
High (3 points)
SSG output: –121dBm
(0.2µV)
SSG DEV: 1.5kHz
4. S Meter 1 1) Tuning point: Center
Write (1 points)
(RSSI) SSG output: –120dBm
(0.22µV)
SSG DEV: 3.0kHz
S Meter 2) Tuning point: Center
FULL Write (1 points)
(RSSI) SSG output: –105dBm
(1.26µV)
SSG DEV: 3.0kHz
• The Squelch Level 1 setting uses the Squelch Level 2 calculated adjustment level value.
ADJUSTMENT
Measurement
Test-
Unit Terminal
equipment
Power TX-RX ANT
meter BATT
terminal
DVM
Measurement
Test-
Unit Terminal Unit
equipment
SSG TX-RX ANT
DVM SP/MIC
Oscilloscope connector
AF VM
TH-K20A/K20E
Adjustment
Unit Parts Method
Check
Adjustment
Parts Method
MCP- [Automatic Adjust-
5T ment]
Press [Start] button
of "Auto Tuning".
Press [Apply] button
to store the adjust-
ment value after the
automatic adjust-
ment has fi nished.
Check
MCP- Write
5T
MCP- Write
5T
Write
Specifi cations / Remarks
Segment display: 4 dots
Segment display: 9 dots
Specifi cations / Remarks
12dB SINAD or more
S Meter Icon (2 dots)
S Meter Icon (9 dots)
21