VHF & UHF Radios (also known as big radios, two-way radios or company radios, sometimes even VHS radios) come in many shapes and forms. Hand held radios are used in applications where you need a battery powered radio that you can carry with you. Mobile radios are usually installed into a vehicle with an external antenna. Mobile Radios are a much higher power radio typically around 30W whereas portable radios are usually a 5W radio. What does that mean in real words? A mobile radio will have a range of around 40kms and a portable radio will have range of around 8 - 10kms.