[R-390] in rush current limiters

[Jim Shorney]

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On Sun, 22 Dec 2002 20:18:26 -0600, Cecil Acuff wrote:


>        The issue, as I understand it, with the three terminal voltage
>regulators is that they are noisy.  They generate hash as they do their jobs
>that adds to the receivers internal noise level.  I think you will agree,
>any mod that detracts from the performance of the radio is not an acceptable
>mod!


Agreed.  That subject has been discussed in several circles involving
sand-state radios, and anecdotal evidence exists claiming that proper
bypassing can resolve this.  I've seen lots of commercial designs (not
just in radios) where the manufacturer ignores the bypassing
recommendations provided by the device manufacturer.  The way I figger
it, they put that stuff in the databooks for a reason.


>Talk with Chuck Ripple....he has been down this road...that is how he came
>to develop the device he offers.


I wouldn't expect Chuck to reveal his trade secrets to us... :-) 
Frankly, I'm leaning towards the guys who say to get rid of the dern
thing entirely and run the tubes from 6.3v.  And I haven't even begun
working on my 390a yet...

- --
Jim Shorney      -->.<--Put complaints in this box
jshorney@inebraska.com
nu0c@amsat.org
Ham Radio NU0C
Lincoln, NE, USA
EN10PT
http://incolor.inetnebr.com/jshorney/
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