Quick Answer
For reliable survival communication, use frequencies between 2 MHz and 30 MHz, with specific channels like 146.520 MHz for FRS (Family Radio Service) and 444.100 MHz for GMRS (General Mobile Radio Service) being useful alternatives.
Reliable UHF Frequencies
When it comes to prepper communication, UHF frequencies offer a reliable alternative to traditional HF radio channels. In the United States, GMRS channels 15 through 22 are allocated for use by groups and offer a range of up to 50 miles, depending on terrain and antenna quality. The GMRS frequency 462.550 MHz is particularly useful for handheld radios due to its relatively low power requirement.
Choosing the Right HF Frequencies
In a grid-down scenario, HF radio communication becomes essential for long-range communication. For reliable communication, use frequencies between 2 MHz and 30 MHz, with bands like 20 meters (14 MHz), 40 meters (7 MHz), and 80 meters (3.5 MHz) being popular choices. The 20-meter band, in particular, is often considered the best choice for voice communication due to its relatively narrow bandwidth and consistent propagation conditions.
Antenna and Power Considerations
To maximize communication reliability, invest in a high-quality antenna designed for your chosen frequency range. For example, a 1/4 wave dipole antenna is suitable for the 20-meter band, while a vertical antenna is better suited for the 40-meter band. As for power, use a reliable power source, such as a battery or generator, and avoid overdriving your transmitter to avoid interference and potential damage.
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