User's Manual

Geophysical Survey Systems, Inc. Model 4105 Antenna
System Settings and User’s Notes
MN34-559 Rev C
3
Mounting and Data Collection Recommendations
Mounting Specifications:
The Model 4105 antenna mounting kit includes 2 square fiberglass tubes, 2 gusset plates and
associated hardware. Figure 1 shows a typical 4105 setup on the back of GSSI’s van.
Figure 1: Typical Model 4105 setup showing fiberglass rods and gusset plates.
The vertical metal pieces attached to the gusset plates are sold separately.
GSSI recommends that you follow the following specifications for mounting the
4105 antennas:
1.
Recommended antenna bottom height above pavement with vehicle stationary:
18-20” (46 – 51 cm)
2.
Recommended closest distance between antenna and significant metal (vertical metal rods
or the vehicle’s bumper) should be at least 40” (1 m).
3.
The control cable should be fastened to one of fiberglass rails to prevent cable movement.
4.
Excessive antenna bouncing should be minimized. The GSSI universal horn antenna
mounting kit includes 4 adjustable straps (ratchet straps) that minimize vertical and
horizontal antenna movement, especially on bumpy roads.
18-20” (46-51 cm)
40” (1 meter)
Control cable fastened to rail
Adjustable straps