[AMRadio] UTC CG-305

[Charles Ring W3NU]

Donald Chester wrote:

> >From: W4AWM at aol.com
> >
> >Sorry for the erroneous post.
> >
> >In all my catalogs, CG refers to audio transformers.  Are you sure of the
> >number?
>
> 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.
>
> Don K4KYV
>

Don't forget the A and HA audio transformers. I made extensive use of A-line
transformers in broadcast work with excellent results.

73 de W3NU