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                                Before the
                     FEDERAL COMMUNICATIONS COMMISSION                     
                          Washington, D.C.  20554


In the Matter of)
     )
     )
Guidelines for Evaluating the Environmental  )    ET Docket No. 93-62
Effects of Radiofrequency Radiation    )
     )




                               THIRD ERRATUM


Adopted:  November 7, 1997              Released:  November 12, 1997


 This Third Erratum corrects the Second Memorandum Opinion and Order in the
above captioned proceeding, FCC 97-303 (released August 25, 1997), by correcting the 
footnote that appeared in the table contained in of Section 97.13 (c)(1) of the Final Rules, set
forth in Appendix A, to read as follows:
  

 (1)  The licensee must perform the routine RF environmental evaluation prescribed by
 1.1307(b) of this chapter, if the power of the licensee's station exceeds the limits given in
the following table:





                              Wavelength Band
 Evaluation Required if 
                         Power* (watts) Exceeds:            


MF


160 m
500


HF


80 m
500


75 m
500


40 m
500


30 m
425


20 m
225


17 m
125


15 m
100


12 m
75


10 m
50


VHF (all bands)
50


UHF

                                  
70 cm
70


33 cm
150


23 cm
200


13 cm
250


SHF (all bands)
250


EHF (all bands)
250



                       Repeater stations (all bands)          
non-building-mounted antennas:  height
above ground level to lowest point of
antenna < 10 m and power > 500 W
ERP
building-mounted antennas:  
power > 500 W ERP 


 * Power = PEP input to antenna except, for repeater stations only, power exclusion
is based on ERP (effective radiated power). 


      FEDERAL COMMUNICATIONS
COMMISSION




      Richard M. Smith
      Chief
      Office of Engineering and Technology