Grecom PSR-310 - Attach the Antenna; Turn the Radio on

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NOTE: Two battery holders are included with your PSR-310. The black bat-
tery holder should be used with non-rechargeable alkaline batteries. The
yellow battery holder should be used with rechargeable Ni-MH or Ni-Cd
batteries. The radio will charge the batteries when the yellow holder is used
in conjunction with the supplied AC adapter or other external 9 VDC power
supply rated at 400 mA. If desired, you may use rechargeable batteries in
the black holder. They will not be charged while installed in the radio.
WARNING: Never place non-rechargeable batteries in the yellow holder.
Intentionally or accidentally recharging non-rechargeable batteries will
cause them to overheat, leak or explode. Dispose of rechargeable batteries
properly by taking them to an approved battery recycling facility. Many com-
munities offer battery recycling services - check with your local solid waste
management agency.
WARNING: Always remove old or weak batteries. Batteries can leak chemi-
cals that destroy electronic circuits. Do not mix old and new batteries, differ-
ent types of batteries (alkaline, or rechargeable), or rechargeable batteries
of different capacities. If you do not plan to use the scanner with batteries for
a month or longer, remove the batteries. Batteries can leak chemicals that
can destroy electronic parts. When you charge rechargeable batteries, do
not over charge them. Overcharging shortens battery life.
Attach the antenna
Remove the antenna from its protective plastic wrapper. Align the slots on
the antenna's BNC male connector with the posts on the radio's BNC female
connector and slide the antenna in place, then rotate the antenna's BNC
connector 1/4 turn clockwise until it snaps in place.
NOTE: If desired, you may also connect a mobile or base station antenna
equipped with a BNC male connector to the antenna connector
Turn the radio on
Rotate the top knob of the VOLUME/SQUELCH control clockwise to turn
the radio on. Set both the VOLUME and SQUELCH knobs at their mid-point
(12 o'clock) position.
NOTE: While 12 o'clock is a good squelch setting to start with, it may cause
your radio to miss some calls with weak signals. You will probably want
to optimize the squelch setting to set it close to threshold. To optimize the
squelch setting to be close to the best threshold, press TUNE, then rotate
the squelch control counterclockwise until a rushing sound is heard from
the speaker. Rotate the squelch control clockwise just past the point where
the rushing sound stops. The squelch is now set to the optimum point.