Procom GF 2-70 - Manual (Page 2)

OPERATION USING A DIPLEXER
In case of operating two transceivers on one antenna at the same time, a
diplexer, type DIPX 225/330 is necessary to complete the system. The tasks
of the diplexer are to protect the two receiver inputs from being destroyed
by the transmitter in the contrary band, and to ensure a low-loss path
between the transceiver and the antenna, which is not loaded by the other
branch. For further details please see the separate data sheet on the DIPX
225/330. The diplexer fully covers both bands and, consequently, tuning to
specific frequencies is not required.
COUPLING DIAGRAM
INSTALLATION
1. BEFORE INSTALLATION
When selecting mounting location take into consideration: positions of
back view mirror, wiper blade paths and defogger wires (when mounting
on rear window). The driver’s view should not be obstructed.
Max. allowed curvature of the glass surface on the mounting spot is 2
mm deflection per 100 mm length.
Environmental- and car temperature must be above 15° C at installation,
and surfaces to be glued must be dry and clean.
2. INSTALLATION
3. AFTER INSTALLATION
Allow the silicone gluings to dry off 2 hours at a temperature above 15°
C. To ensure full strength of the glue, it is recommended to keep the
whip off the mount for 24 hours.
4. TUNING INSTRUCTIONS
Insert a forward/reflection-type wattmeter between the transmitter and
the antenna.
Key the transmitter on the 2 m band and observe the forward and the
reflected power.
Adjust the tuning screw marked “2 m” on the matching unit until
minimum returned power is obtained.
Repeat steps 2. and 3. with the transmitter on the 70 cm band and
using the tuning screw marked “70 cm”.
Check that the reflected power is still minimum at the 2 m band. Fine-
tune using the “2 m” tuning screw if necessary.
REINSTALLATION KIT
A reinstallation kit including all necessary parts for transfer of the antenna to
another vehicle is available under order No. »GF-RK«.
WARNING
SAFETY PRECAUTIONS
Antennas mounted on the windscreen may cause relatively high field
strengths in the passenger cabin and near the dashboard.
To prevent health hazard due to RF radiation, persons must not be 1.
closer than
30 cm to the antenna whip (transmitter output power to the matching
unit:
20 W). (DIN 57 848).
The RF signals at the dashboard may cause interference in the car’s
2.
electronic equipment such as broadcast radio, computer automatics,
braking systems, electronic ignition, relays etc. Some cars are more
susceptible to disturbances than others.
It is the responsibility of the installer to carry out a thorough check of
the proper functioning under any conditions of such circuits before
finishing installation.
The enclosed silicone adhesive contains acetic acid and fungicides. Keep out
of reach of children and dispose properly.
PROCOM A/S reserve the right to amend specifications
without prior notice.
28/11/11