When an emergency situation arises in a remote location, the ability to communicate with outside sources of assistance can prove very valuable. This article reviews the different types of communications technologies available to individuals in remote locations, including satellite telephones, personal locator beacons, satellite messengers, cellular telephones, and the different licensed and non-licensed 2-way radio services available for personal use. It also discusses basic radio communications techniques, emergency communication, requesting ground or air casualty evacuation, and selecting communications devices for different applications.
This research output has an Altmetric Attention Score of 78. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 05 November 2026.
All research outputs
#700,517
of 34,778,077 outputs
Outputs from Wilderness & Environmental Medicine
#63
of 1,367 outputs
Outputs of similar age
#2,420
of 175,024 outputs
Outputs of similar age from Wilderness & Environmental Medicine
#1
of 9 outputs
Altmetric has tracked 34,778,077 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 97th percentile: it's in the top 5% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 1,367 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 16.1. This one has done particularly well, scoring higher than 95% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 175,024 tracked outputs that were published within six weeks on either side of this one in any source. This one has done particularly well, scoring higher than 98% of its contemporaries.
We're also able to compare this research output to 9 others from the same source and published within six weeks on either side of this one. This one has scored higher than all of them
