[R-390] HOW to .....?

[Fernando]

I just did a set and agree, the pins on mine are steel and

the leads from the capacitor foils are crimped on. Not enough

material to make threads on what was left over. Used so much

heat on the pins that the bakelite was sizzling.

Had to order octal plugs and used capacitors with axial leads.

If I were to do it again, I would cut up from the seam up a tad

in the hope the foil leads stay in tack and work with that. 

Or as suggested, wire them from the bottom, not on the

same pins as the old caps.


Just a beginners experience for what its worth.


Still looking for RF and AF gain controls though.


Fernando N2FQ/6
n2fq at sbcglobal.net




> On Mar 9, 2018, at 6:22 PM, jbrannig <jbrannig at verizon.net> wrote:
> 
> The R-390A cap was a bit more complicated.
> The base pins are aluminum and can't be soldered.I drilled and tapped the pins to accept brass screws and soldered the capacitor leads to the screwsI don't remember where I saw this.
>  A pipe cutter opened the cans and Epoxy closed 
> If there is room under the chassis, just solder the caps to the bottom of the sockets.It is a lot easier
> Jim
> Sent from my Galaxy Tab® A
> -------- Original message --------From: Al Parker <anchor at ec.rr.com> Date: 3/9/18  8:45 PM  (GMT-05:00) To: jupete at internode.on.net, r-390 at mailman.qth.net Subject: Re: [R-390] HOW to .....? 
> Hi Pete,
> 	Ihave some info and pix on how I've done it for several different caps 
> on one of my webpages.  Don't picture the R-390A ones there I don't 
> think, but I've done them similarly.
> <http://www.boatanchors.org/filtercap.htm>
> 73,
> Al, W8UT
> 
> On 3/9/2018 8:34 PM, Pete Williams wrote:
>>    G'day    list....  There is a reference  somewhere as to method
>> /details of  opening  and  restuffing the  electrolytics in  the
>> R-390A  power  supply.
>> Would  someone give  me  the reference  for  this  activity please?
>> Tks
>> Pete  VK3IZ
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