Goto Section: 15.227 | 15.231 | Table of Contents
Revised as of October 1, 2020
Goto Year:2019 |
§ 15.229 Operation within the band 40.66-40.70 MHz.
(a) Unless operating pursuant to the provisions in § 15.231, the field
strength of any emissions within this band shall not exceed 1,000
microvolts/meter at 3 meters.
(b) As an alternative to the limit in paragraph (a) of this section,
perimeter protection systems may demonstrate compliance with the
following: the field strength of any emissions within this band shall
not exceed 500 microvolts/meter at 3 meters, as determined using
measurement instrumentations employing an average detector. The
provisions in § 15.35 for limiting peak emissions apply where compliance
of these devices is demonstrated under this alternative emission limit.
(c) The field strength of any emissions appearing outside of this band
shall not exceed the general radiated emission limits in § 15.209.
(d) The frequency tolerance of the carrier signal shall be maintained
within ±0.01% of the operating frequency over a temperature variation
of -20 degrees to + 50 degrees C at normal supply voltage, and for a
variation in the primary supply voltage from 85% to 115% of the rated
supply voltage at a temperature of 20 degrees C. For battery operated
equipment, the equipment tests shall be performed using a new battery.
[ 54 FR 17714 , Apr. 25, 1989, as amended at 55 FR 33910 , Aug. 20, 1990]
Goto Section: 15.227 | 15.231
Goto Year: 2019 |
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