[Code of Federal Regulations]

[Title 47, Volume 5]

[Revised as of October 1, 2005]

From the U.S. Government Printing Office via GPO Access

[CITE: 47CFR97.317]



[Page 597]

 

                       TITLE 47--TELECOMMUNICATION

 

                         COMMISSION (CONTINUED)

 

PART 97_AMATEUR RADIO SERVICE--Table of Contents

 

                      Subpart D_Technical Standards

 

Sec. 97.317  Standards for certification of external RF power amplifiers.



    (a) To receive a grant of certification, the amplifier must satisfy 

the spurious emission standards of Sec. 97.307(d) or (e) of this part, 

as applicable, when the amplifier is:

    (1) Operated at its full output power;

    (2) Placed in the ``standby'' or ``off'' positions, but still 

connected to the transmitter; and

    (3) Driven with at least 50 W mean RF input power (unless higher 

drive level is specified.)

    (b) To receive a grant of certification, the amplifier must not be 

capable of operation on any frequency or frequencies between 24 MHz and 

35 MHz. The amplifier will be deemed incapable of such operation if it:

    (1) Exhibits no more than 6 dB gain between 24 MHz and 26 MHz and 

between 28 MHz and 35 MHz. (This gain will be determined by the ratio of 

the input RF driving signal (mean power measurement) to the mean RF 

output power of the amplifier); and

    (2) Exhibits no amplification (0 dB gain) between 26 MHz and 28 MHz.

    (c) Certification may be denied when denial would prevent the use of 

these amplifiers in services other than the amateur service. The 

following features will result in dismissal or denial of an application 

for certification:

    (1) Any accessible wiring which, when altered, would permit 

operation of the amplifier in a manner contrary to the FCC Rules;

    (2) Circuit boards or similar circuitry to facilitate the addition 

of components to change the amplifier's operating characteristics in a 

manner contrary to the FCC Rules;

    (3) Instructions for operation or modification of the amplifier in a 

manner contrary to FCC Rules;

    (4) Any internal or external controls or adjustments to facilitate 

operation of the amplifier in a manner contrary to the FCC Rules;

    (5) Any internal RF sensing circuitry or any external switch, the 

purpose of which is to place the amplifier in the transmit mode;

    (6) The incorporation of more gain in the amplifier than is 

necessary to operate in the amateur service; for purposes of this 

paragraph, the amplifer must:

    (i) Not be capable of achieving designed output power when driven 

with less than 50 W mean RF input power;

    (ii) Not be capable of amplifying the input RF driving signal by 

more than 15 dB, unless the amplifier has a designed transmitter power 

of less than 1.5 kW (in such a case, gain must be reduced by the same 

number of dB as the transmitter power relationship to 1.5 kW; This gain 

limitation is determined by the ratio of the input RF driving signal to 

the RF output power of the amplifier where both signals are expressed in 

peak envelope power or mean power);

    (iii) Not exhibit more gain than permitted by paragraph (c)(6)(ii) 

of this section when driven by an RF input signal of less than 50 W mean 

power; and

    (iv) Be capable of sustained operation at its designed power level;

    (7) Any attenuation in the input of the amplifier which, when 

removed or modified, would permit the amplifier to function at its 

designed transmitter power when driven by an RF frequency input signal 

of less than 50 W mean power; or

    (8) Any other features designed to facilitate operation in a 

telecommunication service other than the Amateur Radio Services, such as 

the Citizens Band (CB) Radio Service.



[54 FR 25857, June 20, 1989, as amended at 63 FR 36611, July 7, 1998]



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