GroundRules
47 CFR 90.689: Field strength limits.
Where this section sits in the code
- Title 47—Telecommunication
- CHAPTER I—FEDERAL COMMUNICATIONS COMMISSION
- SUBCHAPTER D—SAFETY AND SPECIAL RADIO SERVICES
- 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
(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.
Collected 2026-08-27T02:26:28Z. Source file · JSON