This is a bit embarrassing. A reader found an error in my new book Radio Mastery for VFR Pilots. Let’s get right to it.
In Chapter 1, there is an exercise designed to teach yourself better radio transmission technique. One of the options I offer in this chapter involves using an aircraft radio or a portable aviation transceiver to practice your radio technique. I said you may practice your radio technique by tuning in the frequency 123.45 and using that as a chat frequency. This frequency is not available for this use. Use 122.75 instead. I’ll explain.
In 2008, the FAA changed a paragraph in Order 6050.32B, Spectrum Management Regulations and Procedures Manual. The change says, to match ICAO standards, the frequency 123.45 is reserved for air-to-air communication for ocean crossings beyond the range of VHF communication with ATC. Within the U.S. including Hawaii and Alaska, 123.45 may be reserved for communication during flight test operations.
The Aeronautical Information Manual, Chapter 4, Table 4-1-3, Other Frequency Usage Designated by the FCC says the frequency 122.75 is available for air-to-air communication between private fixed wing aircraft. You may use 122.75 to practice the transmission techniques recommended in Chapter 1 of my book.
I have updated the various versions of my book to reflect this change. If you have already bought the book, please make a simple write-in change, replacing 123.45 with 122.75. My apologies for the error.