Question from the Extra License Class question pool:![]()
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" How does parallel conductor transmission line compare to coaxial cable with a plastic dielectric?![]()
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A. Lower loss![]()
B. Higher SWR![]()
C. Smaller reflection coefficient![]()
D. Lower velocity factor "![]()
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Question from the General License Class question pool:![]()
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" In free space, how does the gain of two three-element, horizontally polarized Yagi antennas spaced vertically 1/2 wavelength apart typically compare to the gain of a single three-element Yagi?![]()
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A. Approximately 1.5 dB higher![]()
B. Approximately 3 dB higher![]()
C. Approximately 6 dB higher![]()
D. Approximately 9 dB higher "![]()
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73 de STARC
Question from the Technician License Class question pool:![]()
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" In the United States, what circuit does black wire insulation indicate in a three-wire 120 V cable?![]()
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A. Neutral![]()
B. Hot![]()
C. Equipment ground![]()
D. Black insulation is never used "![]()
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73 de STARC
More FCC rules and regulations that you really should know as an ARO (Amateur Radio Operator).![]()
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" §97.13 Restrictions on station location.![]()
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(a) Before placing an amateur station on land of environmental importance or that is significant in American history, architecture or culture, the licensee may be required to take certain actions prescribed by §§ 1.1305-1.1319 of this chapter.![]()
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(b) A station within 1600 m (1 mile) of an FCC monitoring facility must protect that facility from harmful interference. Failure to do so could result in imposition of operating restrictions upon the amateur station pursuant to § 97.121. Geographical coordinates of the facilities that require protection are listed in § 0.121(c) of this chapter.![]()
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(c) Before causing or allowing an amateur station to transmit from any place where the operation of the station could cause human exposure to RF electromagnetic field levels in excess of those allowed under § 1.1310 of this chapter, the licensee is required to take certain actions.![]()
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(1) The licensee shall ensure compliance with the Commission's radio frequency exposure requirements in §§ 1.1307(b), 2.1091, and 2.1093 of this chapter, where applicable. In lieu of evaluation with the general population/uncontrolled exposure limits, amateur licensees may evaluate their operation with respect to members of his or her immediate household using the occupational/controlled exposure limits in § 1.1310, provided appropriate training and information has been accessed by the amateur licensee and members of his/her household. RF exposure of other nearby persons who are not members of the amateur licensee's household must be evaluated with respect to the general population/uncontrolled exposure limits. Appropriate methodologies and guidance for evaluating amateur radio service operation is described in the Office of Engineering and Technology (OET) Bulletin 65, Supplement B.![]()
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(2) If the routine environmental evaluation indicates that the RF electromagnetic fields could exceed the limits contained in § 1.1310 of this chapter in accessible areas, the licensee must take action to prevent human exposure to such RF electromagnetic fields. Further information on evaluating compliance with these limits can be found in the FCC's OET Bulletin Number 65, “Evaluating Compliance with FCC Guidelines for Human Exposure to Radio frequency Electromagnetic Fields.” "![]()
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73 de STARC