[Heathkit] SB-600, PS or Speaker, or both

[Jim Isbell, W5JAI]

After looking at the pictures, I am sure this is NOT an HP-23 as the
transformer is a Stancor transformer with a full metal jacket.  and
the layout just doesn't look anything like those pictures of the
HP-23.

But it would seem to be big enough so I just need to do some mods to
get the right voltages out of it.

Thanks for all the posts offering advice and help.


On Fri, 25 Feb 2005 19:16:49 -0500, Richard M. Gillingham
<rmoodyg at bellsouth.net> wrote:
> SB-600 is the speaker.  The power supply is an HP-23x..  x = A, B or C.
> 
> You've got quite a junque pile.
> 
> Gil, W1RG
> 
> 
> ----- Original Message -----
> From: "Jim Isbell, W5JAI" <jim.isbell at gmail.com>
> To: "List for Heathkit" <heathkit at mailman.qth.net>
> Sent: Friday, February 25, 2005 6:51 PM
> Subject: [Heathkit] SB-600, PS or Speaker, or both
> 
> >I have just dug up from my junk pile a cabinet labeled SB-600 and it
> > contains a Speaker and a Power Supply in the same cabinet.  Someone
> > told me that the SB-600 was only a speaker.  Whats the deal?
> >
> > The PS has a +1000V plate voltage (790V CT plate winding on the trans)
> > and a +275V grid(?) supply and is VERY heavy and totally packed into
> > the chassis.  It has what appears to be, I haven't opened it up yet, a
> > PTT switch or relay input on the back as well as a 8 pin , octal tube
> > type, output on the back and a fuse labeled "4 to 5 amps."  should put
> > out 300 watts or so of power based on the fuse spec.
> >
> > I am thinking of using it on a KWM-2.  Could the KWM-2 handle the 1000V?
> >
> > Would I have to neuter this thing to reduce its friskeyness to use it
> > on a HW-101 or could the 1000V be tolerated?
> >
> > --
> > Jim Isbell
> > "If you are not living on the edge, well then,
> > you are just taking up too much space."
> > W5JAI
> > UltraVan #257
> > CAL - 27   #221
> > _______________________________________________
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> 


-- 
Jim Isbell
"If you are not living on the edge, well then, 
you are just taking up too much space."
W5JAI
UltraVan #257
CAL - 27   #221