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POWER SUPPLY
DC OPERATION:
While It is highly unlikely that you will use your H407 in an automobile, you may
desire to run it off a 12 Volt battery in case of emergencies. You can do this by
attaching the DC cord to the set. Attach the red (fused) wire to the battery plus (+)
terminal. Attach the black lead to the battery minus (-) terminal.
SHOULD YOU DESIRE TO OPERATE THE H407 IN YOUR VEHICLE. IT IS EQUIPPED TO
OPERATE EITHER POSITIVE OR NEGATIVE GROUND. CAREFULLY FOLLOW THE
INSTRUCTIONS BELOW.
NO MOBILE MOUNTING BRACKET IS SUPPLIED OR AVAILABLE.
NEGATIVE - POSITIVE GROUNDING
:
Almost all cars and most trucks currently manufactured are negative ground.
There are some large trucks and construction equipment which operate on
positive ground. Your Harvard H407 will operate on either. In the negative ground
systems, the minus (-) pole of the battery is attached to the car body, engine
block, etc.
NEGATIVE GROUND HOOKUP:
Attach the red (fused) wire to the fuse block terminal or any convenient plus (+)
lead. Devices operated by the Ignition key such as the radio, light etc. are best
since when you turn the ignition off, the unit will be turned off. Attach the black
lead to the car body via any convenient method.
NOTE: Many newer cars use plastic dash pieces. Make sure the screw or contact
you choose is attached to the metal framework of the car.
POSITIVE GROUND HOOKUP:
In the event that you do have a positive ground vehicle, the following hookup
must be made. Attach the red (fused) lead to the car body via any convenient
screw, bolt etc. Attach the black lead to the terminal block or any convenient wire
which goes to the minus (-) pole of the battery.
FAILURE TO MAKE THE PROPER CONNECTION COULD RESULT IN UNIT DAMAGE.
ANTENNA CONNECTION
Before operating the transceiver, you must connect a proper antenna system.
Operating the transceiver without an antenna or a dummy load may cause
damage to the expensive RF power transistors.
