In this simple how to we are going to make powdered alcohol using a maltodextrin, high proof (over 125) liquor and a whisk. This is a great addition to your pack and good to start a fire as it is highly flammable. Remember: "We are not responsible for anything you do."
The following chart shows FRS/GMRS and allowed wattage by channel. The lower frequency ranges from 467.7125 down to 462.5625 are set to lower transmission wattage making them excellent for close range communications. The higher frequency ranges from 462.5500 through 462.6500 and 462.7200 through 462.7250 are open for 50 watt transmission rates allowing for further distance with frequency 462.6750 reserved for emergency transmission. Repeaters triggered by CTCSS tones can be used to greatly increase the range of communication by prefixing the CTCSS tone when transmitting to trigger the repeater to listen and rebroadcast.
The mobile radio is a tried and true method for communications in the field. Modern technology has increased range and clarity while also allowing for add-ons like voice scrambling. The FCC regulates and licenses some of the more "prime" radio frequencies, but with the demise of UHF Analog Television Broadcast, there are now other frequencies that are available.