Deep Dive: E1C05
The correct answer is B: Only when transmitting RTTY or data emissions. Under what situation may a station transmit third party communications while being automatically controlled is only when transmitting RTTY or data emissions. Automatic control stations can only handle third party traffic with RTTY or data, not voice. For amateur radio operators, this is important for automatic control operation. Understanding this helps ensure legal automatic control operation.
Why Other Answers Are Wrong
Option A: Incorrect. Third party communications aren't never allowed - they're allowed with RTTY or data emissions. Never isn't correct. Option C: Incorrect. SSB or CW aren't allowed - only RTTY or data emissions are allowed for third party traffic with automatic control. SSB/CW isn't allowed. Option D: Incorrect. NTIA approval isn't the criterion - only RTTY or data emissions are allowed. NTIA approval isn't the criterion.
Exam Tip
Third party with automatic control = only RTTY or data emissions. Think 'A'utomatic 'C'ontrol = 'A'ccepts 'C'omputer data (RTTY/data only). Automatic control stations can only handle third party traffic with RTTY or data, not voice. Not never, not SSB/CW, not NTIA approval - just RTTY or data.
Memory Aid
Third party with automatic control = only RTTY or data emissions. Think 'A'utomatic 'C'ontrol = 'R'TTY/'D'ata only. Automatic control stations can only handle third party traffic with RTTY or data, not voice. Important for automatic control operation.
Real-World Example
A station operating under automatic control: It may transmit third party communications only when transmitting RTTY or data emissions. Voice modes (SSB, FM) cannot be used for third party traffic with automatic control - only digital modes (RTTY, data) are allowed. This is the limitation - only RTTY or data emissions for third party traffic with automatic control.
Source & Coverage
Question Pool: 2024-2028 Question Pool
Subelement: E1C
Reference: FCC Part 97.115
Key Concepts
Verified Content
Question from the official FCC Extra Class pool. Explanation reviewed by licensed amateur radio operators and mapped to the E1C topic.