(Continued from Part 2.)
Low-Power Radio, Communications Planning, and SOI
Several radio types that are relatively easy to use can used to complete a commo plan. To start, choose a primary platform such as either FRS, GMRS, MURS, or CB, and then choose an alternative to standardize on. Then select a primary and alternative channel for both your primary and alternative radio services. Expect to be jammed and be prepared with a set of Signals Operation Instructions (SOI) so that all understand when and how to quietly switch to the alternative channel or radio service.
For longer ranges, GMRS and SSB CB (or standard CB) complement each other. GMRS that can transmit with up to 50 watts requires a license and has only 8 channels, plus a repeater channel. Anyone with a FRS/GMRS could talk to you, or monitor your traffic and over time develop a good understanding of your operation and what resources you may have.
A 23-channel or 40-channel CB requires a large antennas to extend its range out to a practical maximum that might be as much as 12 miles, while a CB with Single Side Band (SSB) puts out a nominal 12 watts of power verses 3.5 watt for standard CB, and therefore will have a much greater range than standard AM or FM CB on whatever antenna is available. Modern handheld CBs are more compact than they once were, but not nearly as compact as an FRS or MURS handheld. FRS radios made after 2016 can have up to 2 watts Effective Radiated Power (ERP) but only on channels 8 through 14 (FRS only). They were formerly restricted to 500 mW ERP.Continue reading“Communications Options for the Common Man – Part 3, by Tunnel Rabbit”
