[TenTec] RF gets into computer

John K Gotwals john at gotwals.com
Thu Oct 26 09:56:03 EDT 2006


When I operate on 75 meter SSB with my Orion, my computer beeps and 
disconnects/reconnects my USB connected keyboard. Note that I do not have 
this problem on 40 meter SSB. My computer is located on the second floor of 
a brick house, and one end of my dipole is about 15 feet from my shack.

>From comments made by others on this list, I may have to put RF filters on 
the cables and wires connected to my computer. I am contemplating the use of 
Amidon FT-240-77 ferrite toroids, which have an I.D. of 1.4 inches and cost 
$9 each. If I buy in quantities of 10, is there a cheaper source for this 
toroid?

Any comments or suggestions on this problem would be appreciated. 



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