Part of our GMRS Radio: The Complete Guide.
I get this question constantly, usually from someone who just noticed their new GMRS radio has a scramble or voice inversion button. The short answer is no, and it’s worth understanding exactly why.
What the Rules Actually Say
Part 95 of the FCC rules, which governs GMRS, explicitly prohibits transmissions intended to obscure meaning, including codes and encryption. This is separate from CTCSS/DCS tones (PL and DPL), which just reduce annoyance from other traffic on a shared channel and don’t hide content, those are fine. Actual voice scrambling, encryption, or anything designed to prevent third parties from understanding your transmission is not.
Why Some Radios Have the Feature Anyway
Manufacturers sell the same hardware platform into multiple radio services worldwide, some of which do permit scrambling for licensed business or public safety users. The feature ships in firmware because it’s cheaper to build one radio than several, not because it’s legal to use on GMRS. The FCC has issued enforcement actions specifically targeting encrypted GMRS repeater traffic in recent years, so this isn’t a theoretical rule nobody checks.
What to Do Instead
If privacy on the air is the actual goal, the honest answer is that GMRS was never designed for it, anyone with a scanner can listen. Use it for what it’s good at, family and small group coordination, and if you genuinely need secure communications, that’s a different tool and a different license class entirely, not a workaround on GMRS.