Then, you need to be able to identify which journals are peer-reviewed. There are generally four methods for doing this: 1  Limiting a database search to peer-reviewed journals only. 2  Some databases allow you to limit searches for articles to peer reviewed journals only.
A walkie-talkie (more formally known as a handheld transceiver, or HT) is a hand-held, portable, two-way radio transceiver. Its development during the Second World War has been variously credited to Donald L. Hings, radio engineer Alfred J. Gross, and engineering teams at Motorola.
All walkie talkies list a maximum effective coverage area. These range anywhere from 20 to 50 miles, but certain conditions must be met for you to reach these ranges. In actuality, your environment may shorten this range to a mile or less. Look for a walkie talkie with both FRS and GMRS frequencies. FRS frequencies are free to use but usually have shorter ranges. GMRS channels require an FCC license to access and provide longer ranges. You should also look for an emergency radio, or a walkie talkie that can access NOAA weather channels.