The BBC has said shortwave broadcasts in English of World Service radio are being jammed in China.
Besides investing and government sites, there are links to overseas and shortwave radio sites, conferences and publications.
Audiences in Sri Lanka can continue to listen to the BBC on shortwave and via its online services.
Beaming shortwave broadcasts into the North was the idea of Kim Sung-min, a former North Korean military propaganda writer.
You may be getting a shortwave radio call from the director, thanking you.
Eventually they found one of the best ways was using shortwave radio transmissions.
Our star can sometimes despatch big bursts of shortwave and longwave radiation, superfast particles and colossal volumes of charged gas (plasma) in our direction.
Over the last four months, several hundred shortwave radios have been confiscated by the authorities, who say that have been illegally donated by Western organisations.
He says the NSA sent out a warning of a possible PLO attack, based on shortwave intercepts, that was inexplicably downgraded by the State Department.
South Pole explorer Admiral Richard Byrd used the company's shortwave in 1933 to communicate from just off the Chilean coast to CBS Radio in New York City.
Shortwave jamming is less frequent, it says, although it has hit transmissions by BBC Persian in Iran and was historically used to block broadcasts during the Cold War.
Many people in rural areas get most of their news from radio, which is dominated by the state broadcaster, although several stations based abroad broadcast to Zimbabwe on shortwave.
According to the affidavit, during this time frame, the CuIS often communicated with its clandestine agents in the United States by broadcasting encrypted radio messages from Cuba on shortwave radio frequencies.
CENTERFORSECURITYPOLICY: Cuban Intelligence Operations in the US
Many people in rural areas get most of their news from radio, which is dominated by the state broadcaster, although several stations based abroad broadcast to Zimbabwe on shortwave and medium wave.
Nine consumer electronics firm agreed in February to standardize and promote a new format called "Blu-ray Disc" that uses a shortwave blue-violet laser to read more than two hours of high-definition content stored on a DVD-size platter.
Clandestine agents in the United States monitoring the frequency on shortwave radio could decode the messages using a decryption program provided by the CuIS. Such methods were employed by defendants previously convicted of espionage on behalf of Cuba.
CENTERFORSECURITYPOLICY: Cuban Intelligence Operations in the US
Such shortwave transmitters have operated for decades in the United States and elsewhere without having any demonstrable adverse effect on either people living in proximity to or working in these facilities or on migratory birds and other wildlife.
At the time, prosecutors allege, Mrs Heidrun was sitting in her study in front of a wireless transmitter that was receiving encoded messages on a shortwave frequency and was hooked up by cable to a computer, reports the German news website Spiegel Online.
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