How many channels do I need? Just like your radio or TV at home, walkie-talkies utilize channels to obtain their signal. FRS radios typically have either seven or 14 channels. Though, in most cases, the manufacturer will give you 38 possible CTCSS tones to use in the receiving and transmitting of your handheld radio. This means that, with a 14-channel radio, you could have up to 532 separate channel configurations or frequencies. GMRS units provide you up to 22 channels.
However, please note that when in a well-populated area, anyone with CTCSS disabled on their walkie-talkie will be able to hear your radio transmission on their radio. The tones, sometimes called interference or squelch codes, are meant to help prevent this. They help filter out static, noise and unwanted chatter on the two-way radio channels. Just select a predetermined channel and code, and you can communicate only with someone using the exact same channel and code. Just remember that your conversation may be semi-private and that privacy is not guaranteed.
Channels 1-7 are solely for use with the FRS/GMRS system; including the more common 2 channels and 4 channels. Eight through 14 channels are solely for FRS, and GMRS gives you between 15 channels and 22 channels for a wide range of communication options. Even though FRS offers 14 channels, some radios come with only one channel and some with only seven. These radios can cost half as much and, for most people, be completely adequate. The sturdy single channel radios are good for business use. Other cheaper models with one channel are just toys. The one and seven channel radios generally have the GMRS interstitial frequencies and not the FRS-only channels. Consider a 14-channel unit if you plan to use your radio in a large urban environment where GMRS is already popular.
Having a 15-channel or more GMRS unit definitely provides you with more choices for your business communications. Though, if you're on an FRS/GMRS system, having 2 channels or 4 channels might suit you just fine. Be sure to determine your use and functionality before making your final selection.