[R-390] Line input filter safety diatribe

n4buq at knology.net n4buq at knology.net
Tue Apr 25 09:24:16 EDT 2006


On Mon, 24 Apr 2006 21:59:27 -0700 (PDT), Perry Sandeen 
<sandeenpa at yahoo.com> wrote :

<snip>

> A bit more difficult.
> Use any major parts suppliers catalog, paper or on-line.  Go to the line 
input filter section. 
> "Corcom/Tyco" is a major brand.  Look at the rated leakage specs for  the 
filters.  Either use one
> with an IEC power connector or you can buy them with solder lugs.  There 
are a bizillon types. 
> All you need is a 3 amp unit.  Pick the performance you want. Buy.  
Install.  THROW AWAY THE
> ORIGINAL FILTER.  Enjoy your safe radio.

Another option.  Gut the original filter and connect the wires directly to 
where the filter connections used to be.  This will allow you to maintain 
the original look-n-feel of the radio from the back side without modifying 
the back panel.  Feed the radio with a filtered line of your choice.  I did 
this by building a box onto the back panel of the cabinet that contains a 
modern filter that feeds a standard power recepticle.  My radio plugs into 
this recepticle.  Concievably, you could mount this in a small aluminum box 
that could be attached to the back of the radio using some existing holes.

Someone correct me if I'm wrong, but the radio can be run without any line 
filter, right?  Sure, you'll get more noise, but you also won't run the 
risk of having a hot chassis.  As long as you aren't running the radio with 
very dirty power, it shouldn't hurt, right?  Again, someone correct me on 
this.

Barry - N4BUQ


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