[Code of Federal Regulations]
[Title 47, Volume 1, Parts 0 to 19]
[Revised as of October 1, 1999]
From the U.S. Government Printing Office via GPO Access
[CITE: 47CFR15.205]
[Page 693-694]
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
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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
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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.
[[Page 694]]
(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]