Deep Dive: G1B09
The correct answer is D: 28.20 MHz to 28.30 MHz. Automatically controlled beacons are permitted on HF frequencies 28.20 MHz to 28.30 MHz (10-meter band). This is the designated beacon segment on 10 meters for automatically controlled beacons. For amateur radio operators, understanding beacon frequency allocations helps when operating or monitoring beacons. This 100 kHz segment is reserved for beacon operation on 10 meters.
Why Other Answers Are Wrong
Option A: Incorrect. Beacons aren't permitted on any frequency if power is less than 1 watt - power level doesn't determine where beacons can operate. They must use designated frequencies. Option B: Incorrect. Beacons aren't permitted on any frequency if transmissions are in Morse code - mode doesn't determine frequency. Beacons must use designated frequencies. Option C: Incorrect. 21.08-21.09 MHz is on 15 meters, not a designated beacon frequency. 10 meters has the HF beacon allocation.
Exam Tip
HF automatically controlled beacons = 28.20-28.30 MHz (10 meters). Think '1'0m 'B'eacons = '2'8.20-28.30 MHz. Designated 100 kHz segment on 10 meters for automatically controlled beacons. Not about power or mode - specific frequency range.
Memory Aid
HF automatically controlled beacons = 28.20-28.30 MHz. Think '1'0m 'B'eacons = '2'8.20-28.30 MHz. Designated segment on 10 meters for automatically controlled beacons. 100 kHz allocation.
Real-World Example
You want to operate an automatically controlled beacon on HF. The designated frequency range is 28.20-28.30 MHz on 10 meters. This 100 kHz segment is reserved for beacon operation. You cannot operate an automatically controlled beacon on other HF frequencies - they must use this specific range.
Source & Coverage
Question Pool: 2023-2027 Question Pool
Subelement: G1B
Reference: 2023-2027 Question Pool · G1 - Commission's Rules
Key Concepts
Verified Content
Question from the official FCC General Class pool. Explanation reviewed by licensed amateur radio operators and mapped to the G1B topic.