X-Detech - Portable Intermodulation Detector
  
Introduction
Remote Operation
Additional Uses
Site History
ASI Profile
Contact ASI

Site History

The Problem
Prior to the installation and commisioning of transmitting equipment, Sky Tower Engineers (Auckland New Zealand) used the xdetech to locate active intermodulation trouble areas.


The Solution
X-Detech identified areas of concern. Staff were able to immediately start eliminating the intermodulation sources. Trouble intermodulation areas of walk platforms, brackets, mounts, lighting equipment, earthing clamps, rail lock system, antenna supports and even reinforcing in the concrete were identified accurately.

The Problem
A low revenue VHF site with mixed linking services had intermittent interference from another on site VHF user.
The owner was reluctant to spend more money on another fruitless search for the source of the problem.


The Solution
X-Detech was handed to a rigger who had not used it before and who had no training in electronics work. Within half an hour he found the prime source of intermodulation, a structural beam some 2 meters from the VHF aerial.
X-Detech also identified a metal banding system causing further problems. The bands were removed and the rest of the site tested clean. No further problems with the site as the intermodulation source had been removed.

The Problem
There wasn't one until X-Detech was used to sweep five new antennas.
While the test sweep results were good, two of the antennas showed a higher than normal level of third order intermodulation mixing.
In one antenna, this level changed with temperature variations.


The Solution
The new, but faulty, antennas were returned to the manufacturer prior to the expense and inconvenience of installation, saving thousands of dollars.