Many thanks to SWLing Post contributor, Vlado (N3CZ), for sharing the following story from the South African Radio League newsletter:
Broadcasters, jammers wreak havoc on amateur radio frequencies
The ARRL reports the battle in the amateur radio 7 MHz band continues between Radio Eritrea and Radio Ethiopia, which is said to be jamming the Eritrean broadcaster with broadband white noise
The problem for radio amateurs is that the battle is taking place in the 40 meter phone band 7,145 and 7,175 MHz with the jamming signal reported by the IARU Region 1 Monitoring System (IARUMS) to be 20 kHz wide on each channel.
The on-air conflict has been going on for years; Ethiopia constructed new transmitting sites in 2008 and is said to use two or three of them for jamming purposes. The interfering signals can be heard in North America after dark.
According to IARUMS Region 1 Coordinator Wolf Hadel, DK2OM, Radio Eritrea is airing separate programs on each frequency. He said in the IARUMS September newsletter that telecommunications regulators in Germany, Austria and Switzerland have been informed, so they could file official complaints.
Read the full ARRL story at
http://www.arrl.org/news/broadcasters-jammers-wreak-havoc-on-amateur-radio-frequenciesIARU Region 1 Monitoring System latest news
http://www.iarums-r1.org/iarums/latest.pdf