G1B07 : What are the restrictions on the use of abbreviations or procedural signals in the amateur service?
A
Only Q signals are permitted
B
They may be used if they do not obscure the meaning of a message
C
They are not permitted
D
They are limited to those expressly listed in Part 97 of the FCC rules
Correct Answer: They may be used if they do not obscure the meaning of a message