Hi Pat (Patrick? Patricia? The Puppet Formerly Known as ‘Postman’? – Just kidding!),
Happy New Year!
Now, to answer your question, two-way radios use a range of what are called ‘frequency bands’ – these are areas of the electromagnetic spectrum (a fancy name for the total range of electromagnetic radiation) that are used for audio communication.
Most radios will operate on either VHF (Very High Frequency – any frequency range between 30MHz and 300MHz) or UHF (Ultra High Frequency – any radio frequency range between 300MHz and 3GHz) modes, but the two types of radio are incompatible with each other, so a careful choice is required on the part of the user. Continue reading