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Matching Harnesses
           

 

 

 

Matching Harnesses

Antenna arrays can be built up by stacking and/or baying. This will achieve additional gain and directivity. By phasing two dipoles vertically with the MH 2 harness this will obtain a gain of 3 dB or 6 dB using 4 dipoles with the MH 4 harness.

The recommended spacing for antennas vertically stacked are listed in the section below. It is recommended that the distances be doubled for talk through applications. The correct phase will only be achieved when the live element on the dipoles are all upward or downward, when vertically stacked with a matching harness.

Frequency Mhz Stacking Distance Frequency MHz Stacking Distance
70 427 190 157
80 374 200 150
90 333 250 120
100 297 300 99
120 249 350 86
130 231 400 76
140 216 450 66
150 201 490 61
160 188 510 58
170 175 550 53

All the above dimensions are in centimetres

Matching Harnesses type MH 2 or MH 4 can also be manufactured to include a 5º or 10º electrical down tilt for applications that require a downtilt from the standard E-Plane configuration.

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Last modified: January 11, 2000