Goto Section: 90.359 | 90.363 | Table of Contents
Revised as of September 1, 2021
Goto Year:2020 |
§ 90.361 Interference from part 15 and Amateur operations.
Operations authorized under parts 15 and 97 of this chapter may not
cause harmful interference to LMS systems in the 902-928 MHz band.
These operations will not be considered to be causing harmful
interference to a multilateration LMS system operating in one of the
three EA sub-bands (see § 90.357(a)) if they are non-video links
operating in accordance with the provisions of parts 15 or 97 of this
chapter and at least one of the following conditions are met:
(a) It is a field disturbance sensor operating under § 15.245 of this
chapter and it is not operating in the 904-909.750 or 919.750-928.000
MHz sub-bands; or
(b) It does not employ an outdoor antenna; or
(c) If it does employ an outdoor antenna, then if:
(1) The directional gain of the antenna does not exceed 6 dBi, or if
the directional gain of the antenna exceeds 6 dBi, it reduces its
transmitter output power below 1 watt by the proportional amount that
the directional gain of the antenna exceeds 6 dBi; and
(i) The antenna is 5 meters or less in height above ground; or
(ii) The antenna is more than 5 meters in height above ground but less
than or equal to 15 meters in height above ground and either:
(A) Adjusts its transmitter output power below 1 watt by 20 log (h/5)
dB, where h is the height above ground of the antenna in meters; or
(B) Is providing the final link for communications of entities eligible
under subpart B or C of this part, or is providing the final link for
communications of health care providers that serve rural areas,
elementary schools, secondary schools or libraries.
[ 60 FR 15253 , Mar. 23, 1995, as amended at 62 FR 52044 , Oct. 6, 1997]
Goto Section: 90.359 | 90.363
Goto Year: 2020 |
CiteFind - See documents on FCC website that
cite this rule
Want to support this service?
Report errors in
this rule. Since these rules are converted to HTML by machine, it's possible errors have been made. Please
help us improve these rules by clicking the Report FCC Rule Errors link to report an error.
Helping make public information public