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G1B01

COMMISSION'S RULES · - Antenna structure limitations; good engineering and good amateur practice; beacon operation; prohibited transmissions; retransmitting radio signals

G1B01§ 97.15(a)G1B →

What is the maximum height above ground for an antenna structure not near a public use airport without requiring notification to the FAA and registration with the FCC?

  1. A50 feet
  2. B100 feet
  3. C200 feet
  4. D250 feet
Why FCC rule 97.15(a) adopts the Part 17 antenna structure rules: any structure more than 200 feet above ground level generally requires notification to the FAA and registration in the FCC's Antenna Structure Registration system. Below that height, and away from airport glide slopes, no notification is needed. Near a public use airport the limit drops on a sliding scale based on distance from the runway, which is why the question specifies a site not near an airport.
Watch out The choice that says 100 feet is a common guess because many local zoning ordinances cap towers near that height, but zoning is a municipal matter, not the FCC's 200 foot federal trigger.
200 feet is the magic number: over 200 and you must call the FAA and register with the FCC.
HamSandwich explanation, first draft. The question and answers are the NCVEC text.
47 CFR 97.15(a) Station antenna structures.

(a) Owners of certain antenna structures more than 60.96 meters (200 feet) above ground level at the site or located near or at a public use airport must notify the Federal Aviation Administration and register with the Commission as required by part 17 of this chapter.

(b) Except as otherwise provided herein, a station antenna structure may be erected at heights and dimensions sufficient to accommodate amateur service communications. (State and local regulation of a station antenna structure must not preclude amateur service communications. Rather, it must reasonably accommodate such communications and must constitute the minimum practicable regulation to accomplish the state or local authority's legitimate purpose. See PRB-1, 101 FCC 2d 952 (1985) for details.)

(c) Antennas used to transmit in the 2200 m and 630 m bands must not exceed 60 meters in height above ground level.

eCFR text as of 1 Sep 2026 · read on ecfr.gov
All of G1B G1B02 →

The rest of G1B

  1. G1B01 What is the maximum height above ground for an antenna structure not near a public use airport without requir…
  2. G1B02 With which of the following conditions must beacon stations comply?
  3. G1B03 Which of the following is a purpose of a beacon station as identified in the FCC rules?
  4. G1B04 Which of the following transmissions is permitted for all amateur stations?
  5. G1B05 Which of the following one-way transmissions are permitted?
  6. G1B06 Under what conditions are state and local governments permitted to regulate amateur radio antenna structures?
  7. G1B07 What are the restrictions on the use of abbreviations or procedural signals in the amateur service?
  8. G1B08 When is it permissible to communicate with amateur stations in countries outside the areas administered by th…
  9. G1B09 On what HF frequencies are automatically controlled beacons permitted?
  10. G1B10 What is the power limit for beacon stations?
  11. G1B11 Who or what determines "good engineering and good amateur practice," as applied to the operation of an amateu…
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