Schematic Diagram - Kenwood TH-25A Series Instruction Manual

Thank you for purchasing this new transceiver.
IMPORTANT:
Please read this instruction manual carefully before placing
your transceiver in service.
SAVE THIS INSTRUCTION MANUAL.
This Instruction Manual covers the following models:
TH-25AT :144 MHz FM transceiver with DTMF Pad.
TH-25A = :144 MHz FM transceiver without DTMF Pad.
TH-25E = :144 MHz FM transceiver with Tone.
(with Tone Burst for U.K. version)
TH-45AT :430/440 MHz FM transceiver with DTMF
Pad.
TH-45A = :430/440 MHz FM transceiver without DTMF
Pad.
TH-45E :430 MHz FM transceiver with tone.
(with Tone Burst for U.K. version)
TH-55AT :1200 MHz FM transceiver with DTMF Pad.
TH-55E :1200 MHz FM transceiver with Tone.
(with Tone Burst for U.K. version)
Under normal circumstances, the transceiver will operate in
accordance with these operating instructions. The
transceiver has been adjusted at the factory and should on-
ly be readjusted by a qualified technician with proper test
equipment.
Attempting service or alignment without factory authoriza-
tion can void the transceiver's warranty.
CAUTION:
Long transmission or extended operation in the HI power
mode might cause the rear of this transceiver to get warm.
Do not place the transceiver where the heat sink (rear
panel) might come in contact with plastic or vinyl surfaces.
Use of an extemal antenna for fixed station is recommended
Illustrations show the TH-25A.
co NTENTS
. SPECIFICATIONS and ACCESSORIES .
2 BATTERY PACK
3. OPERATION
OPERATING CONTROLS ....
RECEIVER OPERATION
TRANSMITTER OPERATION
ORY gsi anan nic teres peateantsconan saapwenasssnasaxsargize sce
AUTOMATIC MEMORY INITIALIZATION
MEMORY ENTRY
MEMORY SHUT ecrritcctiesanctersps pceenester'pegnonn ceases 14
MEMORY RECALL
ODD SPLIT
MEMORY CHANNEL LOCKOUT .. 315
CLEARING ALL MEMORY ..... -16
MEMORY BACK-UP BATTER
SCAN
REPEATERORERATION cascccesscccsssorebodaasaarens canes TH
TRANSMITTER OFFSETS
REVERSE FUNCTION
TONE OPERATION
PRITORP Col cctecaauitas riots reasecsdzoasetacvensdecsssede 19
BEEP TONE
TONEALERT/SYSTEM 3. ..csccscessssessdccveesssecessaseee 20
BATTERY SAVER
AUTOMATIC POWER OFF
BATTERY SAVER and AUTOMATIC POWER OFF
function CANCEL (TH-55AT/55E only)
4. BLOCK DIAGRAM and
SCHEMATIC DIAGRAM .. .-Another sheet
5. MAINTENANCE ............. ve 22
IN CASE OF DIFFICULTY He a
6. OPTIONAL ACCESSORIES .. ...Back cover