These "weeblies" are all over the 10 meter band here in northern Calif Monday through Saturday; gone on Sunday. Best I can find is that they are radiated emissions from HF ultrasonic welders (used to seal plastic packaging, emboss car mats, etc.) They sound like they are a high power oscillator which changes frequency during the welding operation; starting high and decreasing in frequency as the weld is accomplished. Such welders are not supposed to operate in the ten meter band in the US, so I suspect they are "rogue", operating international. Dan AC6DM
Anyone have any idea what those "weeblies" are on ten meters? They typically start high in frequency and flitter past the receiver then stop abruptly. They sound like a very unstable oscillator, -- View this message in context: http://elecraft.365791.n2.nabble.com/HF-noise-30m-tp7593789p7593884.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
