Everything You Need to Know about Emergency Locator Transmitters - FLYING Magazine
Find local stations (and unused frequencies) with Radio-Locator - CNET
Amazon.com: Key Finder, Esky Wireless RF Item Locator, 1 Transmitter with 4 Receivers, Item Tracker with 131ft Working Range and Led Flashlight Function, Key RF Locator, Pet Tracker Wallet Tracker : Electronics
BMK Beacon - Locator Transmitter for PMR / FRS / UHF-CB radios – BMK's Free Flight Store
STALKER Cable and pipe locators
Emergency Locator Transmitter (ELT) Function & Uses