Jim Brown wrote: > Ethernet terminals (computers, routers, switches, hubs) are well > known to generate interfering carriers on 30M, 20M, 15M, 10M, and > 6M. The clocks are local to each system, so if you have neighbors, > it's common to hear a cluster of them around 14,029, 21,052, and > the low end of both 10M CW and 6M.
I host the wireless company's RAP on my tower and power it in exchange for free HS Internet. It has two transceivers ... one for the backbone [flat panel directional antenna, and an omni stick for all the neighbors. It is about 2m below my beam, and I hear a close spaced pair of signals on all the frequencies Jim mentioned. They are very weak and only audible on my K2 and K3. They're in the noise on my TS-850 and FT-847. The Cat5 cable comes down the messenger cable along with my coax runs. Strangely, 1KW into the beam or my low band antenna, the apex of which is about 2m from the RAP, on any band, has no effect on the wireless. 73, Fred K6DGW - Northern California Contest Club - CU in the 2009 Cal QSO Party 3-4 Oct 2009 - www.cqp.org ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
