There are two ways to deal with improving ham radio receivers, or — for that matter — any sort of receiver. You can filter and modify the radio frequency including the radio’s intermediate ...

A tool called the Automatic Packet Reporting System (APRS) is fairly robust in the very high frequency (VHF) part of the amateur radio spectrum ... equipped with a GPS receiver to gather its ...

HF radio refers to radio waves in the frequency range of 3 to 30 MHz. HF radio is known for its ability to provide long-distance communication by bouncing signals off the ionosphere (a process ...