Kenwood TM-3530A - Manual (Page 9)

B. Connection of another DC source
TM-3530A/2570A/ Regulated DC
2550A/2550E/ power supply
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Standard voltage: 13.8 VDC
Current capacity: TM-2570A: 16 A
TM-2550A/2550E: 10 A
TM-3530A/2530A: 7 A
Note:
Preferably, the voltage should be adjusted to
1 3.8 VDC. The regulated supply should be
equipped with a built-in protection circuit for
both overcurrent and overvoltage.
Caution:
A battery charging power supply cannot be
used.
3-2-3. Mobile
A. Wiring on installation on the car.
Notes:
Before installing the power cable, be sure to remove the negative lead from the battery for safety.
After installation and wiring, be sure to double check for correct installation before reconnecting the negative lead to
the battery terminal.
If the fuse opens, be sure to check that each conductor has not been damaged by short-circuiting, etc. Then replace
with a new fuse of the same rating.
After completing the wiring, wrap the fuse holder with tape to protect against moisture.
Do not cut out the fuse even if the power cable is too long.
If the wiring hole in the fire wall or chassis is too small, disassemble the fuse holder to thread the wire through the
hole.
From passenger compartment
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B. Ignition noise
This transceiver is designed to suppress ignition noise;
however, if excessive noise is present, it may be neces­
sary to use suppressor spark plugs (with resistors).
The PG-3A DC line noise filter is available as an optional
accessory for additional filtering, if required. (Except
TM-2570A)
3-2-4. Antenna
Note that the SWR of your antenna should be less than
1.5. A high SWR will cause the TM-3530A/2570A/
2550A/2550E/2530A protective circuit to operate, re­
ducing the transmit output power.