Donald Chester wrote: > >From: [EMAIL PROTECTED] > > > >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
