The system combines a 36-character set—26 letters and base-10 numbers—with the 360 degrees of a compass. A selected keyword directs a changing rotational shift for each character, allowing messages to be manually encoded and decoded using basic field tools.
In this follow-up, we examine how the shifting system works, how the keyword affects the coded values, where the system is strongest, and what limitations must be considered. We’ll also address viewer questions about repeated keys, pattern recognition, breaking the cipher, and practical use during field-radio exercises.
This system is intended for education, experimentation, and field-expedient coded messaging—not as a replacement for professionally tested modern encryption.

