[R-390] The saga cont pt 7

Bruce Hagen b_hagen at sbcglobal.net
Mon Sep 13 16:19:08 EDT 2010


I suppose one reason could be that if you find a piece of consumer goods
built way back when with orange drops you will find that most if not all of
them are still good.

Bruce

-----Original Message-----
From: r-390-bounces at mailman.qth.net [mailto:r-390-bounces at mailman.qth.net]
On Behalf Of Tom Norris
Sent: Monday, September 13, 2010 4:05 PM
To: r-390 at mailman.qth.net
Subject: Re: [R-390] The saga cont pt 7

Why the insistence on Orange Drop type caps when the original layout was
built to use axial caps?  I've yet to find any problems using axial packaged
film capacitors instead, in fact most I've found have cost less and had
similar specs re: temp range, ESR etc. (ESR shouldn't matter diddly squat in
an R390, etc)  Other than those who were used to using Orange Drop caps from
when they worked in TV-Radio shops and were simply "more familiar with them
and think they are better" or such, why not put in the type of package that
was there to begin with rather than wrestling OD's into place?  Besides,
Sprague doesn't make them any more... 

;-)

Tom NU4G

"Don't be Vague, Ask for Sprague"
-----------

On Sep 13, 2010, at 8:55 AM, Walter Wilson wrote:

> I've done it many times. Pictures on my website at www.r-390a.us
> 
> On Sep 13, 2010 9:33 AM, "Barry" <n4buq at knology.net> wrote:
> 
> It can be done - I have done it.
> 
> What voltage ODs are you considering using?  I went with 400V.  If you're
> considering 630V, that really might get very tight in some places.
> 
> The last IF deck I did, I decided to use some good axial-lead caps.  Much
> easier and they should outlast me.
> 
> Barry - N4BUQ
> 
> 
> On Mon 13/09/10  8:27 AM , ka9egw at britewerkz.com sent:
> 
>> I'm staring at this IF deck, trying to figure out how the heck to get
>> allthose Orange Drops in there, if that's the route I go...and going into
>> totalinformation overload reading the "Capacitors" thread in Wei Li's
> 
>> "pearls".
>> Anyone got a pic of a deck with all Orange Drops just to reassure it can
>> bedone?
>> 

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