Sec. 15.205  Restricted bands of operation.

    (a) Except as shown in paragraph (d) of this section, only spurious 
emissions are permitted in any of the frequency bands listed below:

                                                                               
                                 
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---------------------------------
            MHz                          MHz                          MHz      
                   GHz           
-------------------------------------------------------------------------------
---------------------------------
0.090-0.110................               16.42-16.423                    399.9
-410                    4.5-5.15 
\1\ 0.495-0.505............          16.69475-16.69525                      608
-614                   5.35-5.46 
2.1735-2.1905..............          16.80425-16.80475                     960-
1240                   7.25-7.75 
4.125-4.128................                 25.5-25.67                    1300-
1427                   8.025-8.5 
4.17725-4.17775............                 37.5-38.25                  1435-16
26.5                     9.0-9.2 
4.20725-4.20775............                    73-74.6                1645.5-16
46.5                     9.3-9.5 
6.215-6.218................                  74.8-75.2                    1660-
1710                   10.6-12.7 
6.26775-6.26825............                 108-121.94                1718.8-17
22.2                  13.25-13.4 
6.31175-6.31225............                    123-138                    2200-
2300                  14.47-14.5 
8.291-8.294................               149.9-150.05                    2310-
2390                  15.35-16.2 
8.362-8.366................        156.52475-156.52525                  2483.5-
2500                   17.7-21.4 
8.37625-8.38675............                156.7-156.9                    2655-
2900                 22.01-23.12 
8.41425-8.41475............            162.0125-167.17                    3260-
3267                   23.6-24.0 
12.29-12.293...............               167.72-173.2                    3332-
3339                   31.2-31.8 
12.51975-12.52025..........                    240-285                  3345.8-
3358                  36.43-36.5 
12.57675-12.57725..........                  322-335.4                    3600-
4400                       (\2\) 
13.36-13.41................                                                    
                                 
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---------------------------------
\1\ Until February 1, 1999, this restricted band shall be 0.490-0.510 MHz.     
                                 
\2\ Above 38.6                                                                 
                                 

    (b) Except as provided in paragraphs (d) and (e) of this section, 
the field strength of emissions appearing within these frequency bands 
shall not exceed the limits shown in Sec. 15.209. At frequencies equal 
to or less than 1000 MHz, compliance with the limits in Sec. 15.209 
shall be demonstrated using measurement instrumentation employing a 
CISPR quasi-peak detector. Above 1000 MHz, compliance with the emission 
limits in Sec. 15.209 shall be demonstrated based on the average value 
of the measured emissions. The provisions in Sec. 15.35 apply to these 
measurements.
    (c) Except as provided in paragraphs (d) and (e) of this section, 
regardless of the field strength limits specified elsewhere in this 
subpart, the provisions of this section apply to emissions from any 
intentional radiator.
    (d) The following devices are exempt from the requirements of this 
section:
    (1) Swept frequency field disturbance sensors operating between 
1.705 and 37 MHz provided their emissions only

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sweep through the bands listed in paragraph (a) of this section, the 
sweep is never stopped with the fundamental emission within the bands 
listed in paragraph (a) of this section, and the fundamental emission is 
outside of the bands listed in paragraph (a) of this section more than 
99% of the time the device is actively transmitting, without 
compensation for duty cycle.
    (2) Transmitters used to detect buried electronic markers at 101.4 
kHz which are employed by telephone companies.
    (3) Cable locating equipment operated pursuant to Sec. 15.213.
    (4) Any equipment operated under the provisions of Sec. 15.253 or 
Sec. 15.255.
    (e) Harmonic emissions appearing in the restricted bands above 17.7 
GHz from field disturbance sensors operating under the provisions of 
Sec. 15.245 shall not exceed the limits specified in Sec. 15.245(b).
[54 1997 FR 17714 , Apr. 25, 1989, as amended at  55 FR 46791 , Nov. 7, 1990;  56 FR 6288 , Feb. 15, 1991;  57 FR 13048 , Apr. 15, 1992;  58 FR 33774 , June 
21, 1993;  60 FR 28068 , May 30, 1995;  61 FR 14503 , Apr. 2, 1996;  62 FR 4655 , Jan. 31, 1997]