§80.767. Propagation curve. — Inbound Citations

The propagation graph, § 80.767 Graph 1, must be used in computing the service area contour. The graph provides data for field strengths in dBu for an effective radiated power of 1 kW, over sea water, fresh water or land (smooth earth); transmitting antena heights of 4,800, 3,200, 1,600, 800, 400, 200, and 100 feet; based on a receiving antenna height of 9 meters (30 feet), for the 156-162 MHz band. The use of this is described in this section.

(b) Determine for each radial the distance from the antenna site to the + 17 dBu point of field strength using procedures of §§ 80.765 and 80.767.