[AMRadio] UTC CG-305

[Jeff Edmonson]

> >Sorry for the erroneous post.
> >
> >In all my catalogs, CG refers to audio transformers.  Are you sure of the
> >number?

Yup - it's a CG-305 - verified it this morning.  Odd, though -
Someone else said that the output was

High voltage 2400-1750-0-1750-2400VAC, DC voltage 2000/1500, 300 mA continuous

yet the critter is labled (engraved, even) 3500 and 4800.  That's -gotta- be
across
the entire secondaries.  Half of that (what you get when you measure from CT to
outside winding) fall exactly half of what the transformer has engraved on it.

> CG means  "commercial grade".  It applies to both audio and power
> transformers.  This line of transformers was originally designated "PA"
> (public address).  The CG numbers and PA numbers are the same, and the
> electrical  characterists are  usually t he same, but they may be physcially
> different.  The changeover took place in 1948.
>
> CG (and PA) is UTC's mid-line.  It includes the CVM and VM series modulation
> transformers.  Their top line was the LS series.  There are audio and power
> LS transformers as well.  LS transformers were very expensive, even before
> WWII.  LS audio transformers are rated as hi-fi and suitable for broadcast
> service.
>
> Their lowest grade transformers are the S series.  These are typical "ham
> radio" qualty transformers, with marginal power/voltage ratings and mediocre
> audio performance.
>
> I'll  look up  the transformer when I get home f rom work.

I'd appreciate it, Don.  I'm reasonably sure the previous post is correct,
though.

73 = Best Regards,
-=Jeff/W5OMR=-