Updated: Dec 9, 2025 | Source: 2024-2028 Question Pool | Topic: E2C
E2C07E2C

What is the Cabrillo format?

Deep Dive: E2C07

The correct answer is A: A standard for submission of electronic contest logs. What the Cabrillo format is a standard for submission of electronic contest logs. Cabrillo is the standard format for submitting contest logs electronically. For amateur radio operators, this is important for contest operation. Understanding this helps when submitting contest logs.

Why Other Answers Are Wrong

Option B: Incorrect. Method of exchanging information during contest QSO isn't correct - Cabrillo is for log submission, not QSO exchange. QSO exchange isn't Cabrillo. Option C: Incorrect. Most common set of contest rules isn't correct - Cabrillo is a log format, not contest rules. Contest rules isn't Cabrillo. Option D: Incorrect. Digital protocol for rapid contest exchanges isn't correct - Cabrillo is a log format, not a communication protocol. Communication protocol isn't Cabrillo.

Exam Tip

Cabrillo format = standard for submission of electronic contest logs. Think 'C'abrillo = 'C'ontest 'L'og format. Cabrillo is the standard format for submitting contest logs electronically. Not QSO exchange, not contest rules, not communication protocol - just log submission format.

Memory Aid

Cabrillo format = standard for submission of electronic contest logs. Think 'C'abrillo = 'C'ontest 'L'og. Cabrillo is the standard format for submitting contest logs electronically. Important for contest operation.

Real-World Example

Cabrillo format: It's a standard format for submission of electronic contest logs. When you participate in a contest, you submit your log in Cabrillo format. Most contest sponsors accept Cabrillo format logs. This is what Cabrillo is - a standard for electronic contest log submission.

Source & Coverage

Question Pool: 2024-2028 Question Pool

Subelement: E2C

Reference: 2024-2028 Question Pool · E2 - Operating Procedures

Key Concepts

Cabrillo format Electronic contest logs Standard format Contest log submission

Verified Content

Question from the official FCC Extra Class pool. Explanation reviewed by licensed amateur radio operators and mapped to the E2C topic.