Deep Dive: E1A07
The correct answer is C: 1 watt EIRP (equivalent isotropic radiated power). The maximum power permitted on the 2200-meter band is 1 watt EIRP (equivalent isotropic radiated power). 2200-meter band has very low power limits to prevent interference. For amateur radio operators, this is important for low-band operation. Understanding this helps ensure legal operation.
Why Other Answers Are Wrong
Option A (50 watts PEP): Incorrect. 50 watts PEP is way too high - 2200-meter band limit is 1 watt EIRP. 50W is too high. Option B (100 watts PEP): Incorrect. 100 watts PEP is way too high - 2200-meter band limit is 1 watt EIRP. 100W is too high. Option D (5 watts EIRP): Incorrect. 5 watts EIRP is too high - 2200-meter band limit is 1 watt EIRP. 5W is too high.
Exam Tip
2200m band maximum power = 1 watt EIRP. Think '2'200m = '1' watt EIRP. 2200-meter band has very low power limits (1 watt EIRP) to prevent interference. Not 50W PEP, not 100W PEP, not 5W EIRP - just 1 watt EIRP.
Memory Aid
2200m band maximum power = 1 watt EIRP. Think '2'200m = '1' watt. 2200-meter band has very low power limits (1 watt EIRP) to prevent interference. Very restrictive power limit.
Real-World Example
The 2200-meter band: Maximum power permitted is 1 watt EIRP (Equivalent Isotropic Radiated Power). This is a very low power limit - much lower than other bands. The low limit is to prevent interference to other services. 1 watt EIRP is the maximum - this is the power limit for 2200 meters.
Source & Coverage
Question Pool: 2024-2028 Question Pool
Subelement: E1A
Reference: FCC Part 97.313
Key Concepts
Verified Content
Question from the official FCC Extra Class pool. Explanation reviewed by licensed amateur radio operators and mapped to the E1A topic.