Deep Dive: G8C12
The correct answer is A: Varicode. The type of code used for sending characters in a PSK31 signal is Varicode. Varicode is a variable-length code that assigns shorter codes to common characters. For amateur radio operators, this is how PSK31 encodes characters. Understanding this helps when operating PSK31.
Why Other Answers Are Wrong
Option B (Viterbi): Incorrect. Viterbi is an error correction algorithm, not a character code - PSK31 uses Varicode, not Viterbi. Viterbi is different. Option C (Volumetric): Incorrect. Volumetric isn't a code type - PSK31 uses Varicode. Volumetric isn't a real code. Option D (Binary): Incorrect. Binary is too general - PSK31 uses Varicode (a specific variable-length binary code), not just binary. Varicode is the specific code.
Exam Tip
PSK31 character code = Varicode. Think 'P'SK31 = 'V'aricode. Varicode is a variable-length code that assigns shorter codes to common characters. Not Viterbi (error correction), not volumetric, not just binary - just Varicode.
Memory Aid
PSK31 character code = Varicode. Think 'P'SK31 = 'V'aricode. Varicode is a variable-length code that assigns shorter codes to common characters. Standard PSK31 character encoding.
Real-World Example
PSK31 uses Varicode: Common characters like 'e' and space get short codes, less common characters get longer codes. This makes PSK31 efficient - common text transmits faster. Varicode is specifically designed for PSK31 - it's the character encoding used. This is how PSK31 encodes characters.
Source & Coverage
Question Pool: 2023-2027 Question Pool
Subelement: G8C
Reference: 2023-2027 Question Pool · G8 - Signals and Emissions
Key Concepts
Verified Content
Question from the official FCC General Class pool. Explanation reviewed by licensed amateur radio operators and mapped to the G8C topic.