Equipment information

Kenwood TM-241A Transceiver
Manufacturer
Kenwood
Model TM-241A
Date 1994
Category: Radio, Communication
Group Transceiver
Description 144MHz FM Transceiver
Information
                                    General
Frequency range
...................................................136 to
174MHz : TM-241A (M2,M3), TM-241 E(E2)
144 to 148MHz : TM-241A <K,K2,P,P2,X,M)
144 to 146MHz : TM-241 E (E,E9,EM)
Mode......................................................................
F3E (FM)
Antenna
impedance............................................. 50C2
Power
requirements............................................
13.8V DC ± 15% (11.7 to 15.8V)
Ground
...................................................................
Negative
Frequency
stability...............................................
Less than ±10ppm
Current
drain.........................................................Transmit
mode : Less than 11A Receive mode with no signal: Less than 0.6A
Operating
temperature........................................-20°C to
+60°C (-4°F to +140°F)
Dimensions (W x H x D)......................................
140 x 40 x 160 mm (5-1/2" x 1-37/64" x 6-19/64")
Projection
included.......................................... 140 x 40
x 172 mm (5-1/2" x 1-37/64" x 6-25/32")
Weight....................................................................
1.2kg (2.65lbs)

These manuals are available for the above equipment:

Kenwood -- TM-241A -- Service Manual
File name Kenwood-890-Manual-Page-1-Picture
Manual Type Service Manual
Pages 71
Size 39.89 Mbytes (41822770 Bytes)
Language english
Revision
Manual-ID/Number B51-8059-10 (N)1177
Date May 1994
Quality Scanned document, very well readable.
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MD5 5476bb898a2641ee06bf9cba15caaab0
Downloads 8049 since 04 November 2008
Information
Please use this service manual together withe the previous B51-8059-00.
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Kenwood -- TM-241A -- Cirquit Diagram
File name Kenwood-8348-Manual-Page-1-Picture
Manual Type Cirquit Diagram
Pages 1
Size 28.16 Kbytes (28838 Bytes)
Language english
Revision
Manual-ID/Number
Date
Quality Scanned document, all readable.
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MD5 a44d08fc6ae72a8bfab095179f58a63d
Downloads 70 since 08 January 2017
Information
Kenwood-8348-Manual-Page-1-Picture
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Kenwood -- TM-241A -- Service Manual
File name Kenwood-8353-Manual-Page-1-Picture
Manual Type Service Manual
Pages 71
Size 39.89 Mbytes (41822770 Bytes)
Language english
Revision Revised
Manual-ID/Number B51-8059-101 N )1177
Date 01 May 1994
Quality Scanned document, all readable.
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MD5 f7f0c90cc73c2e0c1d2cb2299c15c009
Downloads 102 since 08 January 2017
Information
This service manual is the same as the service manual (B51
-8059-00) for TM-241A/E (TM-241A : K,P,M,M2 TM 241E : E,E2)
destinations except that this manual contains new items for
(TM-241A : M3,X,K2,P2 TM-241E : E9,EM) destinations.
Use it together with the previous service manual (B51-8059-00).

CIRCUIT
DESCRIPTION..............................................2
DESCRIPTION OF COMPONENTS.........................11
PARTS
LIST.................................................................15
EXPLODED VIEW
......................................................30
PACKING.....................................................................31
ADJUSTMENT...........................................................32
TERMINAL FUNCTION.............................................37
CIRCUIT DIAGRAMS / PC BOARD VIEWS
LCD ASS'Y (B38-0330-05)....................................38
PLL
(X58-3470-00)..................................................39
PLL
(X58-3500-11)..................................................41
APC
(X59-3130-00).................................................43
MIC AMP (X59-3610-00).......................................43
TX-RX UNIT (X57-369X-XX) ...............................44
SCHEMATIC DIAGRAM ...........................................47
BLOCK
DIAGRAM......................................................51
LEVEL
DIAGRAM.......................................................54
DRU-1 (DIGITAL RECORDING UNIT)....................55
DTU-2 (DTMF
UNIT)..................................................63
MC-44DM/MC-44DME (MULTI FUNCTION
MICROPHONE WITH AUTOPATCH) .....................65
MC-44 (MULTI FUNCTION MICROPHONE).........66
MC-44E (MULTI FUNCTION MICROPHONE).......67
TSU-6 (CTCSS UNIT)
................................................68
SPECIFICATIONS ..................................BACK COVER
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Kenwood -- TM-241A -- User Manual
File name Kenwood-8364-Manual-Page-1-Picture
Manual Type User Manual
Pages 57
Size 2.14 Mbytes (2247677 Bytes)
Language english
Revision
Manual-ID/Number B62-0031-30
Date
Quality Scanned document, reading partly badly, partly not readable.
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MD5 325979a0031803130bd7bd893da20108
Downloads 102 since 08 January 2017
Information
Instruction Manual

1. BEFORE OPERATION ............................... 4
2. SPECIFICATIONS ........................................ 6
3. ACCESSORIES .............................................. 7
4. INSTALLATION INSTRUCTIONS .......... 7
5. OPERATION
CONTROL FUNCTIONS.................................. 10
RECEIVER OPERATION
Reception
...................................................... 16
Frequency Selection .................................... 17
Frequency Step Selection .......................... 17
Programmable VFO Tuning Limits .......... 18
ALT(TM-541A/E only).................................. 19
TRANSMITTER OPERATION........................ 20
Time-out Timer (TOT) ................................ 20
MEMORY
Microprocessor Memory back-up ............ 21
Initial State
..................................................... 21
Microprocessor Initialization .................... 21
Memory Channel ........................................ 21
Memory Contents ........................................ 22
Memory Entry .............................................. 22
Memory Channel Recall ............................ 24
Memory Shift ................................................ 24
SCAN
Scan Operation ............................................ 25
Hold/Resume Programming .........................25
Band Scan
.........................................................26
Programmable Band Scan .............................26
Memory Channel Scan ...................................27
Memory Channel Lockout .............................27
Priority Alert Function ...................................28
REPEATER OPERATIONS
Transmitter Offsets .........................................28
Reverse Function .............................................29
Tone Operation ...............................................29
Tone Frequency Selection .............................29
Autopatch (U.S.A. version only) ..................30
TONE / CTCSS OPERATION......................30
DTSS (Dual Tone Squelch System)
OPERATION
.....................................................31
DRS (Digital Recording System)
OPERATION ....................................................34
PAGING
.............................................................41
TONE ALERT SYSTEM ................................47
APO (Automatic Power Off) ..........................48
DIM(Dimmer)
....................................................48
BEEP.....................................................................49
LOCK/A.LOCK ................................................49
6. BLOCK DIAGRAM and
SCHEMATIC DIAGRAM Another sheet
7. MAINTENANCE .............................................50
IN CASE OF DIFFICULTY ........................51
8. OPTIONAL ACCESSORIES ........................52
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