Goto Section: 90.235 | 90.238 | Table of Contents
FCC 90.237
Revised as of October 2, 2015
Goto Year:2014 |
2016
§ 90.237 Interim provisions for operation of radioteleprinter and
radiofacsimile devices.
These provisions authorize and govern the use of radioteleprinter and
radiofacsimile devices for base station use (other than on mobile-only or
paging-only frequencies) in all radio pools and services except
Radiolocation in this part.
(a) Information must be submitted with an application to establish that the
minimum separation between a proposed radioteleprinter or radiofacsimile
base station and the nearest co-channel base station of another licensee
operating a voice system is 120 km (75 mi) for a single frequency mode of
operation, or 56 km (35 mi) for two frequency mode of operation. Where this
minimum mileage separation cannot be achieved, either agreement to the use
of F1B, F2B, F3C, G1B, G2B or G3C emission must be received from all
existing co-channel licensees using voice emission within the applicable
mileage limits, or if agreement was not received, the licensee of the
radioteleprinter or radiofacsimile system is responsible for eliminating any
interference with preexisting voice operations. New licensees of voice
operations will be expected to share equally any frequency occupied by
established radioteleprinter or radiofacsimile operations.
(b) [Reserved]
(c) Transmitters certificated under this part for use of G3E or F3E emission
may also be used for F1B, F2B, F3C, G1B, G2B or G3C emission for
radioteleprinter or radiofacsimile, provided the keying signal is passed
through the low pass audio frequency filter required for G3E or F3E
emission. The transmitter must be so adjusted and operated that the
instantaneous frequency deviation does not exceed the maximum value allowed
for G3E or F3E.
(d) Frequencies will not be assigned exclusively for F1B, F2B, F3C, G1B, G2B
or G3C emission for radioteleprinter or radiofacsimile (except where
specifically provided for in the frequency limitations).
(e) The requirements in this part applicable to the use of G3E or F3E
emission are also applicable to the use of F1B, F2B, F3C, G1B, G2B or G3C
emission for radioteleprinter and radiofacsimile transmissions.
(f) The station identification required by § 90.425 must be given by voice or
Morse code.
(g) For single sideband operations in accordance with § 90.266, transmitters
certified under this part for use of J3E emission may also be used for A2B
and F2B emissions for radioteleprinter transmissions. Transmitters certified
under this part for use of J3E emission in accordance with § § 90.35(c)(1)(A),
90.35(c)(1)(B), 90.35(c)(1)(C) and 90.257(a) may also be used for A1B, A2B,
F1B, F2B, J2B, and A3C emissions to provide standby backup circuits for
operational telecommunications circuits which have been disrupted, where so
authorized in other sections of this part.
[ 43 FR 54791 , Nov. 22, 1978, as amended at 49 FR 48712 , Dec. 14, 1984; 51 FR 14998 , Apr. 22, 1986; 62 FR 18927 , Apr. 17, 1997; 63 FR 36610 , July 7, 1998;
63 FR 68965 , Dec. 14, 1998; 72 FR 35195 , June 27, 2007]
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Goto Section: 90.235 | 90.238
Goto Year: 2014 |
2016
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