[Hallicrafters] Power Transformer For SX-28

[Edward B Richards]

Hi David et al;

IIRC the black (grid return) usually goes to ground, a bias supply or the
AVC line. Might help him determine which wire is which. 

73, Ed Richards K6UUZ
Simi Valley, Ca 93065
Home of the Air Force 1 pavilion

On Mon, 24 Apr 2006 14:48:33 -0400 "David C. Hallam"
<dhallam at rapidsys.com> writes:
> There is a color coding for IF transformer leads
> 
> Blue         plate lead
> Red        B+ lead
> Green        gird (or diode) lead
> Black grid (or diode) return
> 
> If the secondary of the IF transformer is center tapped, the second 
> diode
> plate lead is green and black striped and the black is used as the 
> center
> tap lead.
> 
> David
> KC2JD
> 
> -----Original Message-----
> From: hallicrafters-bounces at mailman.qth.net
> [mailto:hallicrafters-bounces at mailman.qth.net]On Behalf Of Rob 
> Copeland
> Sent: Monday, April 24, 2006 2:11 PM
> To: Hallicrafters at mailman.qth.net
> Subject: RE: [Hallicrafters] Power Transformer For SX-28
> 
> 
> 
> 
> 
> To All that have responded... Thank you so much for your info and 
> support.
> Thankfully the transformer turned out to be good. The problem was 
> the ground
> tab was not bolted to the chassis. Being as it was hidden under the 
> Phono
> coax I had trouble finding it until I went to pull the transformer. 
> Then low
> and behold I found the loose tab and after a quick bench check of 
> the
> transformer I luckly found it to be good. Now back to the IF 
> section. If
> anyone has a diagram of how the IF Cans T1 -T3 are supposed to be 
> connected
> that would be extremely helpful. Seeing how the insulation was 
> completely
> gone from those units and the schematic I have does not show any 
> sort of
> color coding for the wiring of those IF cans.
> 
> Thanks Again! :)
> 
> Rob
> 
> 
> 
> -----Original Message-----
> From: hallicrafters-bounces at mailman.qth.net
> [mailto:hallicrafters-bounces at mailman.qth.net]On Behalf Of Rob 
> Copeland
> Sent: Friday, April 21, 2006 2:03 PM
> To: Hallicrafters at mailman.qth.net
> Subject: [Hallicrafters] Power Transformer For SX-28
> 
> 
> I am looking for a power transformer for an SX-28. Anyone know where 
> I could
> find one?
> 
> Any help would be deaply appreciated. :)
> 
> Rob
> 
> 
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