[Amps] transformers

[R L Measures]

On Jul 16, 2006, at 2:08 PM, John Vickers wrote:

> ----- Original Message -----
> From: "Roy Koeppe" <royanjoy at ncn.net>
>>>
>>> If this is so, why should anyone ever have bought an
>>> SB-220, when the
>>> SB-200 was also rated at that exact same power, with a
>>> much lower price?
>
> My memory is not what it used to be, but I built an SB 200 in the  
> early 70s
> and would almost swear that it was only rated at 1/2 Kw out / 1Kw  
> PEP---
> using the accepted rule of thumb (at the time) of twice DC inp to  
> state PEP.
> Another thing that alot of newer hams don't realize is that the FCC  
> was much
> more involved in the process back then.
>
> I was treated to a visit from one of the field officers from Powder  
> Springs
> monitoring station in about 1967 to check my power. About 2 hours  
> after he
> left, the little white warning slip arrived in the mail. I was  
> being warned
> for *Advocating the use of illegal power*. At the time my amp was  
> just a
> pair of 813s and the pwr xfmr was two HV xfmrs from TV sets in  
> series to
> supply the B+. I was below 1Kw input but he gave me heck because I  
> didn't
> have any meters to read voltage or current. Just tuned up with a  
> string of
> 300 watt light bulbs ! He also advised me that I really didn't need  
> to be
> hanging out on 3895kc --- where they had heard the conversation  
> about high
> power. Being a scared teen, thinking I was headed to the big house,

Here on the West Coast, the punishment was thought to be walking the  
plank.
cheers, John

> I moved
> back down to CW for a few weeks. I doubt very seriously that any  
> commercial
> amp producers advertised power ratings above legal limit back then.
> 73, John WA4TT
>
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R L MEASURES, AG6K. 805-386-3734
r at somis.org