[Code of Federal Regulations]
[Title 47, Volume 1]
[Revised as of October 1, 2001]
From the U.S. Government Printing Office via GPO Access
[CITE: 47CFR15.205]

 
                       TITLE 47--TELECOMMUNICATION
 
              CHAPTER I--FEDERAL COMMUNICATIONS COMMISSION
 
PART 15--RADIO FREQUENCY DEVICES--Table of Contents
 
                    Subpart C--Intentional Radiators
 
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              1435-1626.5                  9.0-9.2
4.20725-4.20775......................                  73-74.6            1645.5-1646.5                  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            1718.8-1722.2               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..........................
----------------------------------------------------------------------------------------------------------------
\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 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.

    (5) Biomedical telemetry devices operating under the provisions of 
Sec. 15.242 of this part are not subject to the restricted band 608-614 
MHz but are subject to compliance within the other restricted bands.

    (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 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; 62 FR 58658, Oct. 30, 1997]