CAD CAD Antenna Designer Regulatory and Standards Compliance 2 — Questions and Answers
Question 1: In FCC licensing, what term describes an antenna system that operates below a certain power threshold and does not require an individual station license?
- License-exempt device (Correct answer)
- Experimental license
- Type acceptance
- Special temporary authority
Correct answer: License-exempt device
License-exempt devices (such as those under FCC Part 15) operate below defined thresholds and do not require individual station licenses.
Question 2: What is the purpose of RF shielding effectiveness testing per MIL-STD-461?
- To verify that enclosures attenuate unintended emissions and external interference (Correct answer)
- To measure antenna gain in an anechoic chamber
- To certify antenna connector torque specifications
- To validate transmission line impedance matching
Correct answer: To verify that enclosures attenuate unintended emissions and external interference
MIL-STD-461 shielding effectiveness testing verifies that equipment enclosures sufficiently attenuate both emitted and received electromagnetic interference.
Question 3: What does the term 'type acceptance' mean in FCC antenna certification?
- An FCC authorization confirming a device meets technical standards before sale (Correct answer)
- A field measurement confirming antenna gain meets specifications
- A self-declaration of conformity by the manufacturer
- An FAA approval for airborne antenna installations
Correct answer: An FCC authorization confirming a device meets technical standards before sale
FCC type acceptance is an authorization process confirming that a radio device meets applicable technical standards and may be marketed in the U.S.
Question 4: What antenna parameter does the FCC specifically regulate on cellular base station installations to limit human RF exposure?
- Minimum separation distance from the antenna (Correct answer)
- Antenna color and marking
- Connector type used
- Cable routing method
Correct answer: Minimum separation distance from the antenna
The FCC mandates minimum separation distances (exclusion zones) around cellular base station antennas to ensure RF exposure stays within MPE limits.
Question 5: ANSI C63.4 defines test methods for measuring emissions from which class of devices?
- Unlicensed intentional and unintentional radiators (Correct answer)
- Licensed broadcast transmitters
- Satellite uplink systems
- Military radar arrays
Correct answer: Unlicensed intentional and unintentional radiators
ANSI C63.4 specifies measurement methods for emissions compliance testing of unlicensed intentional and unintentional radiators under FCC Part 15.
Question 6: Which regulation governs antenna installations on aircraft in the United States?
- FAA Advisory Circulars and TSO standards (Correct answer)
- FCC Part 87
- IEEE Std 802.16
- OSHA 1910.97
Correct answer: FAA Advisory Circulars and TSO standards
The FAA issues Advisory Circulars and Technical Standard Orders (TSOs) that govern the design, installation, and testing of aircraft antenna systems.
CAD CAD Antenna Designer Regulatory and Standards Compliance 2
In FCC licensing, what term describes an antenna system that operates below a certain power threshold and does not require an individual station license?