CB Radios (Citizen Band) are generally used for short distance radio communications on public AM and FM frequencies. Useful for close proximity radio communications between 2 to 10 kilometers. CB Radios operating on AM frequencies have been around for many years and are popular with truck drivers who enjoy keeping in touch with their fellow drivers. Low Cost Communications - CB Radios operating on AM or FM frequencies offer a low cost communications option. The 26MHz (AM) frequency and 477MHz (FM) frequency is free to use in New Zealand and the CB sets are available at between $200 and $500. Instantly Available - CB Radios are hardwired into a vehicle or base station. They are always connected to a power supply and are always ready to use. CB Radio communications are also popular with clubs like 4 wheel drive clubs to facilitate communications at club events. Buy CB radio NZ.