Receiver Section - Kenwood 144MHz FM TRANSCEIVER K2E Service Manual

TH-K2AT/K2E/K2ET

Receiver section

Item Condition
1.RX BPF Squelch level: 0
Adjust 1) Frequency: 145.050MHz
Frequency: 146.050MHz
SSG output: –53dBm (501 uV) Dummy load
SSG MOD: 1kHz
SSG DEV: 3kHz
Switch to Adjustment mode
and carry out the operations
for adjustment item E.
(Refer to page 29)
2) LCD display: BPL
Frequency: 136.050MHz
SSG: –119dBm (0.25 uV)
3) SSG: –113dBm (0.501 uV)
4) LCD display: BPC
Frequency: 146.050MHz
SSG: –119dBm (0.25 uV)
5) SSG: –120dBm (0.22 uV)
6) LCD display: BPH
Frequency: 160.050MHz
SSG: –119dBm (0.25 uV)
7) SSG: –113dBm (0.501uV)
2.IF response 1) Frequency : 144.050MHz
Check SSG Frequency: 221.750MHz Oscilloscope
SSG output: –60dBm (224uV) Distortion meter
SSG MOD: 1kHz
SSG DEV: 3kHz
AF output: 0.63V/8Ω
3.Squelch / Switch to Adjustment mode
S-meter and carry out the operations
Write for adjustment item C.
(Refer to page 28)
1) LCD display: SQ1
Frequency: 145.050MHz
Frequency: 146.050MHz
SSG: –125dBm (0.126uV)
2) LCD display: SQ2
Frequency: 145.050MHz
Squelch
Frequency: 146.050MHz
SSG: –120dBm (0.22uV)
36
ADJUSTMENT
Measurement
Test equipment
SSG
(E, E3) Oscilloscope
Distortion meter
(K, K2, M, M2) AF V.M
SSG
SSG
(E, E3)
(K, K2, M, M2)
(E, E3)
(K, K2, M, M2)
Unit Terminal Unit Parts
TX-RX ANT VOL
(A/3) SP knob
Encoder
[MENU]
Encoder
[MENU]
Encoder
[MENU]
ANT
[MENU]
[MENU]
Adjustment
Specifications/
Remarks
Method
Turn the VOL knob 0.63V
to obtain 0.63V AF
output.
Write Max Sensitivity
Check 12dB SINAD or
more
Write Max Sensitivity
Check 12dB SINAD or
more
Write Max Sensitivity
Check 12dB SINAD or
more
Check 12dB SINAD or
less
Note: If the
specification is not
satisfied, repeat the
operations for
"1. RX BPF
Adjust".
Write Note: In the
Squelch adjust
ments, all 4
adjusting points
including the S-
meter must be
Write adjusted.