Kmc-25/26 (Speaker Microphone) - Kenwood TK-290 Service Manual

KMC-25/26 (SPEAKER MICROPHONE)

KMC-25 External View
KMC-26 External View
Note : Stubby antenna are options
KMC-25/26 Specifications
Microphone
Impedance ..............................2k
Sensitivity ................................ –65dB±4.0dB at 1kHz
Speaker
Impedance .............................. 16
Input ........................................ 0.5W
Maximum input ....................... 1.5W
Dimensions .................................. 62 W x 81 H x 29 D (mm)
Weight (With plug cord) .............. Approx. 0.17kg
KMC-25/26 Circuit Diagram
Universal
SP/MIC
connector
EXT. ANT
(KMC-26)
SP+
SP–
If the earphone jack output is too
high, adjust the value of resistor R12.
5V
Shield
(KMC-25)
MIC
+
10µ
KMC-
More
26
than
25V
0.01µ
ME
+
1mH
(KMC-26)
PTT
PF
SSW
MSW
E
KMC-25/26 Parts List
Ref. No. New Parts No.
parts
A02-2092-08
∗
A02-2253-08
A02-2093-08
∗
A02-2254-08
B09-0382-08
D10-0629-08
E30-3287-08
∗
E30-3322-08
J29-0644-08
J42-0495-08
S70-0459-08
T07-0359-08
T91-0584-08
N08-0535-08
TK-290
R12 0
2.2K
68K
10µ
22K
–
+
10µ
22K
+
NJM3404
+
2.7K
ECM
ECM
SUB MAIN
+
PF1
∗
: New parts
Description
Case (Front)
Case (Front)
Case (Rear)
Case (Rear)
Cap (Phone)
Lever (PTT)
Lead wire with plug assy
Lead wire with plug assy
Clip assy
Bushing
Tact switch
Speaker
MIC element
Dressed screw
SP
Earphone
jack ø3.5
+
SW2
PTT
PF2
Model
25
26
25
26
25
26
71 47