HF radios are powered by solar panel.

The electronics package of HF radios, radar, and sonar was installed at the Yard.

Trans-oceanic aircraft also carry HF radio and satellite transceivers.

Okay, so maybe some of them kept an HF radio after the CIA withdrew support.

Fictitious position reports were sent by HF radio as if the aircraft were mid-ocean following the stated route.

As the standards were adopted by other governments worldwide, more manufacturers produced competitively priced HF radios to meet this demand.

HF radio often has extremely high levels of background noise and can be difficult or distracting to listen to for long periods of time.

The stations were linked by tropospheric scatter and by HF radio.

The Company steadily grew and began exporting their first commercial HF radios in 1987.

He said he was listening on the HF radio and overheard a conversation.