Connecting The Microphone - Radio Shack TRC-503 Owner's Manual

21-1703a.fm Page 7 Thursday, August 5, 1999 4:41 PM
When you choose an antenna, keep in
mind that, for the best performance, you
should mount the antenna:
• as high as possible on the vehicle
• as far as possible from sources of
electrical noise
• vertically
Once you choose an antenna, follow its
mounting instructions. Then route the
cable to the transceiver and connect the
cable to the
ANTENNA
of the transceiver.
Cautions:
• Avoid routing the cable next to sharp
edges or moving parts, which might
damage the cable.
• Do not run the cable next to power
cables or other
cables.
• Do not run the cable through the
engine compartment or other areas
that produce extreme heat.
To take advantage of your radio's maxi-
mum range, adjust the antenna's Stand-
ing Wave Ratio (SWR) using an SWR
meter (not supplied).
Follow the instructions supplied with the
SWR meter and antenna to adjust your
antenna's SWR to the lowest possible
value. SWR values of 2.0:1 are general-
ly acceptable, with readings of 1.5:1 or
lower being more desirable.
CONNECTING THE
MICROPHONE
jack on the back
radio antenna
To disconnect the microphone from the
transceiver, press the tab on the side of
the plug. Then pull out the plug.
Caution: Never pull on the microphone
cable.
1. Press the tab on the side of the sup-
plied microphone's plug and insert
the plug into the
front of the transceiver. Be sure the
tab is aligned with the jack's notch.
Tab Notch
2. Slide the microphone onto the
microphone holder.
jack on the
MIC
7