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Antenna Basics
Your Mobile Radio Kit does not include an Antenna. It is VERY Important to NOT transmit without an
antenna or dummy load attached to the mobile radio. Doing so, will cause harm to the internal
components of your radio.
You will want to choose a suitable antenna for the bands you plan on transmitting and receiving on. If
you plan on transmitting on GMRS Channels you will want to ensure you have picked an antenna that
states it is capable of working with 462-467MHz. If an antenna is not properly tuned for the frequency
you transmit on – it can cause damage with the reflected power going back into the radio.
Pick an antenna with SWR of less than 1.5:1 to safely transmit
Ground Plane:
Antennas require an appropriate ground plane to properly work. This can be a car body (not a fiberglass
car body, but some metal), or a set of ground radials for homebrewed antennas or commercially
designed antennas which do not require an external set of radials.
Magnetically Mounted Antennas:
These antennas must be grounded to a metal surface, such as a vehicle body. Magnetic base antennas
do not properly operate unless they are fully magnetically grounded first. This is usually accomplished
via the metal car body. Magnetic Antennas do NOT function properly on Plastic or fiberglass bodies.