Palomar SSB-500 Instruction Manual page 6

the engine running. Locate the accessory contact on most ignition switch­
es by tracing the power wire from the AM broadcast receiver in the car.
B. Connect the black lead to — 12V DC. This is usually the chassis of the
car. Any convenient location with good electrical contact (remove paint)
may be used.
4. Follow the instructions below if you are certain that your vehicle has a
Positive Ground System.
A. Connect the positive (red) wire to a screw boit on the metal frame sup-
porting the instrument panel, or to any metal point that is part of the
vehicle's metal structure. (Remove any paint or coating to ensure good
' electrical contact).
B. Connect black negative lead to - 12V DC. Usually, - 12V is obtained
from the accessory contact on the ignition switch or directly on the minus
battery terminal.
5. Mount the microphone bracket on the right side of the transceiver or near the
transceiver, using four screws supplied. When mounting in an automobile,
place the bracket under the dash so the microphone is readily accessible.
Ignition Noise Interférence
Use of a Mobile transceiver at low signal level is normally limited by the prés­
ence of noise. The primary source of noise in automobile installation is from the
generator and ignition system in the vehicle. Under most operating conditions,
when signal level is adéquate, the background noise does not present a serious
problem. Also, when extremely low level signais are being received, the trans­
ceiver may be operated with vehicle engine tumed off. The unit requires very
little current and therefore will not significantly discharge the vehicle battery.
Even though the PALOM AR SSB-500 has a selectable automatic noise
limiter, in some installations ignition interférence may be high enough to make
good communications impossible. The electrical noise may corne from several
sources. Many possibilities exist and variations between vehicles requires dif­
ferent solutions to reduce the noise. Consult with your PALOMAR dealer or a
CB Radio technician for help in locating and correcting the source of severe
noise.
Antenna
Since the maximum allowablè power output of the transceiver is limitted by
the FCC, the antenna is one important factor affecting transmission distance.
Only a properly matched antenna system will allow maximum power transfer