In other parts of the world like the United Kingdom and much of Europe, it has been possible for legal use of FM mode using 27 MHz Citizens Band for many years.
The United States has not made any major changes to its unlicensed radio services since the introduction of the 5 channel VHF MURS plan starting in 2009 and fully adopted in 2014.
Opening up the use of FM on the "CB" spectrum in the United States which currently uses AM and SSB mode is going to introduce some interesting dynamics if this long overdue change to FCC Part 95 is adopted.
There are actually a number of other things mentioned in the July 15th 2021 WT Docket No. 10-119 that may catch your eye beyond just the petition raised by Cobra and President, two very well known vendors of legal (and semi-legal) CB capable equipment made for the US market.
What the Memorandum Opinion and Order on Reconsideration Would Do:
- Grant Cobra’s Petition requesting that the Commission allow FM as an optional modulation scheme for all existing 40 CB Radio Service channels (with AM remaining mandatory).
- Dual modulation would improve the user experience since FM provides benefits for some types of communications.
- Grant Motorola’s Petition requesting that the Commission allow automatic or periodic location and data transmissions in the GMRS and FRS. The Commission’s rules currently permit the transmission of location information and brief text messages initiated by a manual action and automatic responses of location information.
- This action would assist users in tracking friends and family in remote outdoor locations (e.g. hikers, skiers, hunters).
- This action would permit automatic location information transmissions, as conditioned, on all GMRS/FRS channels where the Commission has allowed manual data transmissions, subject to the same technical limitations as manual data transmissions.
- Grant Medtronic’s Petition requesting the correction of typographical errors and rule changes in the Part 95 Personal Radio Services Rules Report and Order that inadvertently altered the substance of the Medical Device Radiocommunications Service (MedRadio) rules.