PCTEL MOSAIC Series Quick start guide

TRUNK LID MOUNT (Model K721)
MOSAICTM SERIES ANTENNA
For 108-512 MHz
General Notes
The use of PTFE or similar lubricant, on the threaded portions of the antenna, prior to assembly, will protect from weather and
ease future diassembly.
If an o-ring exists with your existing mount, discard the old o-ring and use new o-ring supplied with Base Coil.
Use supplied Mylar Pad with Roof Mount Antennas only.
1.
2.
3.
For use on vehicles with thick (up to 1/2:”) mounting surfaces.
When mounting on a non-metallic surface, apply Model K-67 Ground Plane Kit
before installing antenna. Follow instructions supplied with kit.
Drill a 3/8” diameter hole in desired location. Mounting surface must be accessible
from both sides.
Route cable from radio to hole. Adjust toggle so that it is about one or two turns
from bottom of mount. Insert mount from underside of mounting surface (Fig. C1).
Insert o-ring in groove on underside of adapter. NOTE: Apply lubricant to o-ring
surface to help hold it in place in the adapter. Screw adapter onto mount so that
about .050” (thickness of a dime) of the white insulator is exposed over the top of
adapter (Fig. C2).
Screw toggle up until it touches underside of mounting surface. Secure by tighten-
ing adapter with spanner wrench supplied.
Peel backing from mylar
tape, supplied with base
coil, and place around the
adapter, sticking it to the
mounting surface. Apply
lubricant to o-ring, supplied
base coil, and slip it down
over adapter onto the mylar
tape surface. Assemble coil,
whip, and spring. Tighten
assembly securely. Refer to
27-8477 instruction sheet
for appropriate whip cutting
chart.
7. Firmly screw assembled antenna onto adapter. Obtain and install the appropriate
mating connector, as shown on page 2, and connect to radio.
1.
2.
3.
4.
5.
6.
THICK ROOF MOUNT (Models K794 and KE794)
Find suitable mounting location. This should be on the side of the trunk
lid near the back of the vehicle. The mounting location must be free from
obstructions, both the trunk lid as well as the whip area, when the trunk lid is
open.
Using a mild detergent and water, clean and dry the mounting location. Apply
the 2” x 1/2” mylar tape curled over the edge of the trunk for protection from
the mounting bracket when installed (Fig. D1).
Slide mounting bracket onto trunk lid edge over tape. Tighten nylon-tip
set screws, alternating from one screw to the other, until even tightness is
achieved. Do not over-torque.
Apply lubricant to o-ring, supplied with base coil, and slip it down over
adapter. Refer to 27-8477 instruction sheet for appropriate whip cutting
chart. Firmly screw assembled antenna onto adapter.
Obtain and install the appropriate mating connector, as shown on page 2,
and connect to radio.
1.
2.
3.
4.
5.
27-9736-1 Rev. B
11/2007

Cutting Chart for Standard ASPR795 (Whip Length in inches)
TUNING
For operation at 108-174 or 406-512 MHz, refer to chart below to find the
point closest to the desired frequency, and match it to the correct mount. If
equipment is available, the whip may be cut to cover any 20 MHz (or larger
as the frequency increases) segment of the 108-512 MHz spectrum. In the
region above 400 MHz, the bandwidth can exceed 80 MHz. After tuning, be
sure that the set screw bears against whip when tightened.
FREQUENCY K794 K721
108 25.75 25.25
111 25.00 24.25
114 24.25 23.50
117 23.50 23.00
120 22.75 22.50
123 22.25 21.75
126 21.50 21.25
129 21.00 20.75
132 20.50 20.25
135 20.00 19.75
138 19.50 19.25
141 19.00 18.75
144 18.75 18.25
147 18.25 17.75
150 18.00 17.25
153 17.00 16.75
159 16.50 16.50
162 16.25 16.25
165 16.00 15.75
168 15.75 15.00
171 15.50 14.75
174 15.00 14.50
406-440 5.25 5.00
415-455 5.00 4.75
435-470 4.75 4.50
455-490 4.50 4.25
475-512 4.25 4.00
485-530 4.00 3.75
495-550 3.75 3.50
FREQUENCY K794 K721
150-165 16.38 15.38
155-170 15.76 14.76
160-174 15.63 14.5
370-430 5.87 4.37
400-512 4.00 2.31
450-550 3.75 1.75
Cutting Chart for Standard ASPR7495 (Whip Length in inches)
TUNING
For operation at 150-174 or 406-512 MHz, refer to chart below to find the point
closest to the desired frequency, and match it to the correct mount. If equip-
ment is available, the whip may be cut to cover any 24 MHz (or larger as the
frequency increases) segment of the 150-512 MHz spectrum. In the region
above 400 MHz, the bandwidth can exceed 100 MHz. After tuning, be sure
that the set screw bears against whip when tightened.
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