[Amps] RF ?

Jim Brown jim at audiosystemsgroup.com
Wed Feb 4 12:31:59 EST 2009


On Wed, 4 Feb 2009 07:08:21 -0500, Francis Sanita wrote:

>I have not eliminated this issue to any particular band and no other  
>equipment in my shack affects the garage door opener ( not even my  
>30L-1). 

Frank,

You've gotten excellent advice for fixing an overload problem, but one 
part of your post raises a red flag -- "not even my 30L-1"  I interpret 
that to mean that the 30L-1 doesn't bother the GDO. That suggests that 
the SB-200 may be putting out a harmonic or spur that is causing the 
problem. 

By all means, DO follow the good advice you've received (cap on 
terminals going to remote wiring, ferrite choke on power cable). The 
choke needs to be multiple turns around a toroid per my tutorial. But 
if that doesn't fix it, suspect the amp. 

73,

Jim Brown K9YC




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