Codan-radio Radio Repeater Systems Training Guide Uživatelský manuál stáhnout pdf (Strana 14)

TRAINING GUIDE | RADIO REPEATER SYSTEM

Chapter 1: Repeater System BasicsPage 6

To determine if the site you have chosen will cover the required area, a coverage map should be drawn

for that site. A coverage map shows the areas that the proposed radio system will effectively cover

with line-of–sight paths. Mobile coverage maps are a bit of an “art form” because you have to use your

imagination. In spite of this, they end up being quite accurate, and are much less expensive than a ﬁ eld

survey. In addition, if more than one site is required, prepare proﬁ les of the path between the sites.

A coverage map and path proﬁ le are shown in Figure 1-5. Detailed information about drawing coverage

maps is available in appendix A, and detailed information on path proﬁ les can be found in Appendix B.

Figure 1-5: Coverage Map and Path Proﬁ le

Office

2020'

3000'

4000'

1000'

Obstructions

Hills Not Obstructing.

Signal O.K.

Line-of-sight

Elevation

Plan View

1000'

2000'

3000'

4000'

2000'

Line-of-sight (50 km)

Phillips Creek

Office

Obstructed Path

Portable

Poor or no Signal

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Codan-radio Radio Repeater Systems Training Guide Uživatelský manuál Strana 14