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Re: Power Supply Woes Solved!



Yes, Jeff, adding small value caps will shunt (short) the RF to ground I 
recomend using a .1 uF non-electrolitic. That should do the trick.  
Larger value caps, such as electrolytics, also have internal inductances 
that can act as an RF choke and block the signals from being shunted to 
ground.


>Date: Tue, 19 Jan 1999 15:54:02 -0600
>From: Jeff Johns <jeffj@scott.net>
>To: amsat-bb@AMSAT.Org
>Subject: [amsat-bb] Power Supply Woes Solved!
>
>Thanks to everyone that answered my plea for help with my power supply.
>Almsot everybody seemed to think that there was some type of RF getting 
in
>the power supply and causing the problem (provided the power supply was
>proven to be able to run another appliance). Today I proved this 
theory, by
>relocating the transceiver further away from the power supply and the 
radio
>and powe supply now work together in harmony! Many people suggested 
putting
>a capacitor between the + and - outputs on the power supply. Since I 
have
>determined that it's an RF problem, would the addition of capacitors 
really
>solve anything? I _really_ do appreciate everyones input, I bet I got 
almost
>75 answers from people trying to lend a hand. Instead of trying to 
thank
>each individual, I hope you will accept my thanks in this form!
>
>73 Jeff W4JEF
>
>    *=-=-=-=-=-=-=-=-= Jeff Johns W4JEF - AMSAT# 32615 
-=-=-=-=-=-=-=-=*
>    |jeffj@scott.net  w4jef@amsat.org |     Reserve Patrol Captain     
|
>    |  Satellite: Mir R0MIR-1, AO-27  | Jefferson County Sheriff's 
Dept|
>    |200LX+BayPac+FT50=Portable Packet|     QTH Birmingham, AL USA     
|
>    
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>
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