Goto Section: 90.214 | 90.217 | Table of Contents
FCC 90.215
Revised as of October 1, 2008
Goto Year:2007 |
2009
Sec. 90.215 Transmitter measurements.
(a) The licensee of each station shall employ a suitable procedure to
determine that the carrier frequency of each transmitter authorized to
operate with an output power in excess of two watts is maintained within the
tolerence prescribed in Sec. 90.213. This determination shall be made, and the
results entered in the station records in accordance with the following:
(1) When the transmitter is initially installed;
(2) When any change is made in the transmitter which may affect the carrier
frequency or its stability.
(b) The licensee of each station shall employ a suitable procedure to
determine that each transmitter authorized to operate with an output power
in excess of two watts does not exceed the maximum figure specified on the
current station authorization. On authorizations stating only the input
power to the final radiofrequency stage, the maximum permissible output
power is 75 percent for frequencies below 25 MHz and 60 percent of the input
power for frequencies above 25 MHz. If a non-DC final radiofrequency stage
is utilized, then the output power shall not exceed 75 percent of the input
power. This determination shall be made, and the results thereof entered
into the station records, in accordance with the following:
(1) When the transmitter is initially installed;
(2) When any change is made in the transmitter which may increase the
transmitter power input.
(c) The licensee of each station shall employ a suitable procedure to
determine that the modulation of each transmitter, which is authorized to
operate with an output power in excess of two watts, does not exceed the
limits specified in this part. This determination shall be made and the
following results entered in the station records, in accordance with the
following:
(1) When the transmitter is initially installed;
(2) When any change is made in the transmitter which may affect the
modulation characteristics.
(d) The determinations required by paragraphs (a), (b), and (c) of this
section may, at the opinion of the licensee, be made by a qualified
engineering measurement service, in which case the required record entries
shall show the name and address of the engineering measurement service as
well as the name of the person making the measurements.
(e) In the case of mobile transmitters, the determinations required by
paragraphs (a) and (c) of this section may be made at a test or service
bench: Provided, That the measurements are made under load conditions
equivalent to actual operating conditions; and provided further, that after
installation in the mobile unit the transmitter is given a routine check to
determine that it is capable of being received satisfactorly by an
appropriate receiver.
Goto Section: 90.214 | 90.217
Goto Year: 2007 |
2009
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