[TenTec] RF gets into computer

[Jim Brown K9YC]

>Any comments or suggestions on this problem would be appreciated. 

The link below is to my tutorial on RFI to and from our ham 
stations. It addresses exactly the problems you are having. 

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

The most likely cause of this kind of RFI is a "pin 1 problem" in 
the computer. Most serial interfaces and most sound cards have pin 
1 problems. 

73,

Jim Brown K9YC