User Manual

Geophysical Survey Systems, Inc. Model 5106 Antenna

System Settings and User Notes

Manual MN30-191 Rev -A 1

Model 5103 Antenna

The Model 5103 antenna has greatly improved resolution performance over previous GSSI

mid-frequency antennas, such as the Model 3105 (300 MHz). The Model 5103 can be used in

continuous, survey wheel or static stacking modes.

The Model 5103 can only be used with a “deadman” switch with the SIR-20 or SIR-3000 control

units. These systems are designed to drive the antenna at its maximum rated pulse repetition frequency

of 100 KHz. These limitations are imposed by the Federal Communications Commission (FCC)

System Setup - Standard Settings

Preset Settings: Range/Depth is approximately 2.5m (8 ft) assuming a dielectric constant of 9.

Setup Mode: Manual

System Run Mode: Survey Wheel (recommended) or Continuous

Range: 50 ns

Number of Gain Points: 5

Vertical Low Pass Filter: 800 MHz

Vertical High Pass Filter: 100 MHz

Samples per Scan: 512

Bits per Sample: 16

Scans per Second: Set to 64 (recommended).

Deep Profiling: For approximately 5 m (16 ft) with a dielectric of 9,

manually set range to 100 ns.