[Hammarlund] SP600 ReCap BBODs

[Richard Knoppow]

----- Original Message ----- 
From: "bill kirkland" <kirklandb at sympatico.ca>
To: <anchor at ec.rr.com>; "'Wes Bolin'" <k5apl at yahoo.com>; 
<hammarlund at mailman.qth.net>
Sent: Friday, January 25, 2013 4:33 PM
Subject: Re: [Hammarlund] SP600 ReCap BBODs


> James (Andy) Moore (Jammin Power) has a web page with 
> manuals.
> One of which he annotate the parts - very helpful.
>
> -----Original Message-----
> From: hammarlund-bounces at mailman.qth.net 
> [mailto:hammarlund-bounces at mailman.qth.net] On Behalf Of 
> anchor at ec.rr.com
> Sent: January-25-13 5:46 PM
> To: 'Wes Bolin'; hammarlund at mailman.qth.net
> Subject: Re: [Hammarlund] SP600 ReCap BBODs
>
>
> Hi Wes,
>  I'm away from home this wkend, email is a bit difficult. 
> Just for reference, go to
> www.hammarlund.info   On the intro page, download the 2 
> parts of "The SP-600 Compendium", put together by Perry 
> Sandeen.  Also, go into the site to the service section, 
> and look at/download the large section on recapping the 
> SP-600 that was written by Ray Vasek.
>  That should help you out.  You'll get lots of replies on 
> how to do it, my recommendation is to work with the 
> schematic at hand, and identify every cap you replace as 
> you do it.  You'll learn about the circuit, and if you 
> mark them off as you do it, that will help.  Most of them 
> are bypass caps.
>  Supper time here.
> 73,
> Al, W8UT
> www.boatanchors.org



 Andy's web site is at
http://www.jamminpower.com/jam.html

    Its interesting that he uses film capacitors rather than 
ceramics in his rebuilds.  Unless your ceramic caps are 
Class-1 AKA NP0 or C0G types film caps are probably better. 
Although Hammarlund went from the original .02 uf caps to 
.01 I would still use the original value. No rationale to 
this.
    I prefer to clean the old terminals. Clip out the old 
parts and then remove the remnants of the leads.  I think it 
results in a neater job. Can't always be done.  Getting at 
some of the capacitors and getting some of the IF cans off 
is made easier by removing the side panels.  This is a long 
job requiring some patience, there are (I think) 42 paper 
caps that must be replaced.


--
Richard Knoppow
Los Angeles
WB6KBL
dickburk at ix.netcom.com