47 C.F.R. § 90.689 Field strength limits.
Title 47 - Telecommunication
(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]
Title 47: Telecommunication
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
Policies Governing the Licensing and Use of EA-Based SMR Systems in the 809–824/851–869 MHz Band
§ 90.689 Field strength limits.
