CI-441 RFMT-DB-VHF-7-800 - STI-CO

CI-441 RFMT-DB-VHF-7-800 - STI-CO
Roof Mount Installation Considerations
Roof Mount Dual Band VHF/700/800 Antenna
RFMT-DB-VHF/7-800
VERIFY:
1. Part List: The package includes antenna, coupler, and hardware (See drawing). Use only the
components supplied with the antenna. I.e. mast and coupler.
2. Bandwidth: The VHF/7-800 broadband antenna is 24 MHz wide, within the range of 150-174 MHz and
106 MHz wide within the range of 760-870 MHz.
INSTALLATION:
1. Placement: Select a desired location for the antenna; it may be mounted on roof or trunk lid. When
mounting antenna on the roof, remember to allow room for duplexer unit and feedlines.
Note: Keep in mind that some vehicles will have composite trunk lids.
Drill 3/4" hole. Remove any burs above and below the hole.
Note: Be careful not to tear the sheath of cable when pulling through sharp body panels. If a hole
appears in the cable's sheath, cover with several layers of a high quality electrical tape.
MOBILE RADIO 1
(NOT INCLUDED)
(NOT INCLUDED)
VHF/7-800 DUPLEXER
LOCKING NUT
MOBILE RADIO 2
BASE
®
ci-441
Page 1 of 2
a 2002 STI-CO INDUSTRIES, INC., 11 Cobham Drive, Orchard Park, NY 14127-4187
Technical Support: E-mail: techsupport@sti-co.com Phone: 1-716-662-2680 Fax: 1-800-685-1122
Made in U.S.A.
REV 000
2. How to attach: Pass the NMO base cable assembly through hole from outside vehicle. Thread the
locking nut, with "O" ring seated in groove, onto base and tighten. Make sure mounting base is
centered and shoulder is seated properly. Locking nut must compress "O" ring and contact with vehicle.
3. Assemble: Attach the duplexer, residing in the headliner, to the NMO base cable assembly. Connect
the remainder of the antenna as shown.
4. Interconnect: Refer to the installation diagram on the previous page. Do not tape or secure any
feedlines to data or vehicle cables during installation. Connect the radios to the proper ports.
+TESTING:
Installation testing, if required, must take place at the transmitter side of the feedline. This will ensure
that the cable connectors and cables have the proper continuity. Make sure all doors, hood, and trunk
are closed. The coupler can is part of the tuning network and needs to be in line for proper test results.
Note: Some vehicles are sensitive to VHF frequencies. STI-CO suggests that you isolate feedlines and
check for unwanted interference with the ignition switch on.
5. Reflective Power - A measurement of reflective power using a wattmeter, you can expect up to 11%
reflected power. When results are greater than 11%, recheck grounding.
6. SWR - A measurement of SWR (standing wave ratio) will yield better than 2:1. If greater than 2:1,
recheck grounding.
ci-441
Page 2 of 2
a 2002 STI-CO INDUSTRIES, INC., 11 Cobham Drive, Orchard Park, NY 14127-4187
Technical Support: E-mail: techsupport@sti-co.com Phone: 1-716-662-2680 Fax: 1-800-685-1122
Made in U.S.A.
REV 000
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