Generally, the biggest problem a new ham radio operator will come across when starting out on the high frequency (HF) bands is finding physical space for the antennas. For a quick example, a dipole… ...

[G3OJV] knows the pain of trying to operate a ham radio transmitter on a small lot. His recent video shows how to put up a workable basic HF antenna in a small backyard. The center of the system ...

The procedure outlined below can help you understand the process of making and testing an HF RFID antenna. A loop antenna is a tuned LC circuit for a particular frequency, which is 13.56 MHz for the ...

At present, portable receivers generally use ferrite rod antennas for LF and MF (below 2 MHz), and whip antennas for HF (up to 30 MHz). Each type has proved effective in its particular application.

Cobham Wide Band HF antenna. Photo: Cobham [Avionics Today 09-17-2015] Cobham Aerospace Communications has developed a Wide Band High Frequency (HF) antenna capable of transmitting data at a rate ...

FORT HUACHUCA, Ariz., -- More than a century after Guglielmo Marconi helped pioneer trans-Atlantic communications, High Frequency (HF) has continued to be a consistent, economical and reliable ...

The labs also help with creative thinking in the world of HF communications. "Most often the antennas they have won't do what they need effectively, and we show them simple ways to add a lot of ...

Naval tech researcher Spawar has figured out how to use a jet of seawater as an antenna. By squirting a measured length of saltwater through a “current-probe”, various antennae can be formed ...