CFR > Title 47 - Telecommunication > CHAPTER I—FEDERAL COMMUNICATIONS COMMISSION > SUBCHAPTER D—SAFETY AND SPECIAL RADIO SERVICES (Parts 80–101) > PART 90—PRIVATE LAND MOBILE RADIO SERVICES > SUBPART S—Regulations Governing Licensing and Use of Frequencies in the 806-824, 851-869, 896-901, and 935-940 MHz Bands (§90.601 to §90.699) > 90.689—Field strength limits.

90.689—Field strength limits.

(a) For purposes of implementing §§ 90.689 through 90.699, predicted 36 and 40 dBµV/m contours shall be calculated using Figure 10 of § 73.699 of this chapter with a correction factor of −9 dB, and predicted 18 and 22 dBµV/m contours shall be calculated using Figure 10a of § 73.699 of this chapter with a correction factor of −9 dB.
(b) The predicted or measured field strength at any location on the border of the EA-based service area for EA licensees must not exceed 40 dBuV/m unless all bordering EA licensees agree to a higher field strength. In the event that this standard conflicts with the EA licensee's obligation to provide co-channel protection to incumbent licensees pursuant to § 90.621(b), the requirements of § 90.621(b) shall prevail.
[61 FR 6158, 6159, Feb. 16, 1996, as amended at 62 FR 41216, July 31, 1997]