Deep Dive: E3A09
The correct answer is C: 28 MHz - 148 MHz. Which of the following frequency ranges is most suited for meteor-scatter communications is 28 MHz - 148 MHz. Meteor scatter works best in the VHF range (roughly 28-148 MHz). For amateur radio operators, this is important for meteor scatter operation. Understanding this helps when operating meteor scatter.
Why Other Answers Are Wrong
Option A (1.8-1.9 MHz): Incorrect. 1.8-1.9 MHz is too low - meteor scatter works best in VHF range (28-148 MHz). 1.8-1.9 MHz is too low. Option B (10-14 MHz): Incorrect. 10-14 MHz is too low - meteor scatter works best in VHF range (28-148 MHz). 10-14 MHz is too low. Option D (220-450 MHz): Incorrect. 220-450 MHz is too high - meteor scatter works best in VHF range (28-148 MHz). 220-450 MHz is too high.
Exam Tip
Meteor-scatter frequency range = 28 MHz - 148 MHz. Think 'M'eteor 'S'catter = 'M'iddle 'S'pectrum (VHF). Meteor scatter works best in the VHF range (roughly 28-148 MHz). Not 1.8-1.9 MHz, not 10-14 MHz, not 220-450 MHz - just 28-148 MHz.
Memory Aid
Meteor-scatter frequency range = 28 MHz - 148 MHz. Think 'M'eteor 'S'catter = 'V'HF range. Meteor scatter works best in the VHF range (roughly 28-148 MHz). Important for meteor scatter operation.
Real-World Example
Meteor-scatter communications: The frequency range most suited is 28 MHz - 148 MHz (VHF range). This includes 10 meters (28-29.7 MHz), 6 meters (50-54 MHz), and 2 meters (144-148 MHz). Meteor scatter works best in this VHF range. This is the range - 28 MHz to 148 MHz.
Source & Coverage
Question Pool: 2024-2028 Question Pool
Subelement: E3A
Reference: 2024-2028 Question Pool · E3 - Radio Wave Propagation
Key Concepts
Verified Content
Question from the official FCC Extra Class pool. Explanation reviewed by licensed amateur radio operators and mapped to the E3A topic.