Sec. 90.689  Field strength limits.

    (a) For purposes of implementing Secs. 90.689 through 90.699, 
predicted 36 and 40 dBV/m contours shall be calculated using 
Figure 10 of Sec. 73.699 of this chapter with a correction factor of -9 
dB, and predicted 18 and 22 dBV/m contours shall be calculated 
using Figure 10a of Sec. 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 Sec. 90.621(b), the requirements of Sec. 90.621(b) 
shall prevail.
[ 61 FR 6158 , 6159, Feb. 16, 1996, as amended at  62 FR 41216 , July 31, 
1997]