FRS (Family Radio Service)

FRS (Family Radio Service) is a walkie talkie system used in the United States. These radios use narrow band FM modulation over low power to communicate half-duplex over short distances. The maximum power allowed is .5 Watts. That is not a lot of power. Reach depends on the presence of obstacles such as trees and buildings. One can expect to maintain communications over a distance of a few hundred meters, to over a kilometer, depending on terrain.

These radios operate in the UHF (300 MhZ to 3 GhZ) band over 14 channels. The first 7 channels are shared with another, much more powerful system, called GMRS (General Mobile Radio Service). The FRS channels themselves start at 467.5625 MhZ and go up to 467.7125 MhZ. The spacing between the channels is 12.5 kilohertz. The channels shared with GMRS start at 462.5625 and go up to 462.7125.

Users do not need a license to use a FRS radio.

(Dave, 2014)

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s