[TenTec] Argo RF In to computer Speakers..

Jim Brown jim at audiosystemsgroup.com
Wed Aug 11 08:08:33 EDT 2004


On Wed, 11 Aug 2004 03:10:01 -0400 (EDT), Larry Greenberg N5BEA wrote:

>What do I need to do keep hearing myself in the external computer speakers? 

This is caused by the cable to these loudspeakers acting as an antenna, and a 
pin 1 problem inside either the computer's sound card or an active amplifier in the 
external loudspeaker. Winding the cable that feeds them multiple turns through a 
ferrite toroid will usually reduce the current enough that the interference will 
become inaudible. The number of turns required depends on the type of ferrite 
and the transmitter frequency (lower frequencies require more turns). 

Jim Brown  K9YC 




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