[Elecraft] 14.03 MHz Continuous Tone/Carrier?@#$

[Jim Brown]

On Tue, 14 Aug 2007 15:25:06 -0700, Leigh L Klotz, Jr. wrote:

>Also 21.060.  It is from 100 megabit ethernwt devices.  Switch your 
>shack to 10 megabit ethernet and it will be only your neighbors QRP 
>transmitters with end-fed long wire antennas (CAT5 wiring) that you 
>hear.

Not that easy. If your 100MBit system is connected to a 10 MBit device 
(like most Internet modems), it will carry that traffic as 10 MBit 
traffic, and you'll hear the birdies. 

See my RFI tutorial for more details and fixes. 

http://audiosystemsgroup.com/RFI-Ham.pdf 

>I have two 100 megabit switches within six feet of the radio, and can
>barely hear the spur on 14.030, so experience varies. 

No, experience doesn't vary, it has NOTHING to do with proximity to 
your radio. What matters is proxmity to your ANTENNA, the degree to 
which that RF trash is suppressed by the router, and the ANTENNAS 
connected to the router (the Ethernet cables and the power cable)!

73,

Jim Brown K9YC