RFI
[Top] [All Lists]

[RFI] HF RFI from digital displays on big Farad caps?

To: RFI List <rfi@contesting.com>
Subject: [RFI] HF RFI from digital displays on big Farad caps?
From: kd4e <doc@kd4e.com>
Reply-to: doc@kd4e.com
Date: Thu, 18 Jun 2009 12:13:30 -0500
List-post: <rfi@contesting.com">mailto:rfi@contesting.com>
I am going to be using a somewhat modified Messenger M4V 
solid state
amp for 160-10M.

I will be adding a bandswitched filter, a SWR protection 
circuit, some bias
mods, and will make various other tweaks so that it runs 
clean and safe.

In order to prevent FMing or audio oscillations I will add 
one of the big
Farad caps to the DC supply line to keep the voltage from 
varying during
modulation peaks and dips.

I notice that some of those caps have a digital display.  I 
am guessing that
the circuitry is really cheaply made with little or no 
bypassing or shielding.
Has anyone tested them for RFI?

-- 

Thanks! & 73, doc, KD4E
FS/Swap/Wanted: http://kd4e.com/swapn.html
Free OS : http://www.PuppyLinux.com
Personal: http://kd4e.com
             |_|___|_|
             | | & | |
        /\      {|
       /  \     {|
      /    \    {|
     /   @  \   {|
     |   |~_|~~~~|
     |   -| |    |
============\ # KD4E
Have an http://ultrafidian.com day!
_______________________________________________
RFI mailing list
RFI@contesting.com
http://lists.contesting.com/mailman/listinfo/rfi

<Prev in Thread] Current Thread [Next in Thread>