[Amps] urban myth and transmitting tubes

donroden at hiwaay.net donroden at hiwaay.net
Mon Aug 27 03:49:10 EDT 2012


They run in a world where nitrous oxide powered big-block 454s drive  
four to six custom mounted three phase alternators. Vehicle of choice  
is usually a GMC Suburban, and the back end is the Amp.... "usually"  
but not limited to the popular 4CX15,000.  Alternator belt life seems  
to be the weak link after ten seconds of carrier for field strength  
measurement contests.

Don W4DNR


Quoting Jim Hoge <knowkode at verizon.net>:

> He was probably thinking triode numbers and ceramic at that.  
> Remember the cb crowd has figured out how to "swing" 15kw from a  
> mobile system with a stock alternator and battery. It must be the  
> new math that allows 13.8 Vdc and 500 A to produce 15kw. Besides  
> Part 15 rules, they regularly break Ohm's law too.
>
> 73,
> Jim W5QM
>
>
>
> ________________________________
>  From: Bill Fuqua <wlfuqu00 at uky.edu>
> To: ampS <amps at contesting.com>
> Sent: Sunday, August 26, 2012 6:58 PM
> Subject: [Amps] urban myth and transmitting tubes
>
>    I was selling some 4-1000A duds as display items for our local radio
> club when a guy came by and started talking about
> tubes. Now, this guy did have a ham ticket but not an old  timer. He
> insisted that he knew someone that had a 4-10,000 tube and another person
> that had some 4-5000 tubes. I tried to explain to him that it was very
> unlikely and as far as I knew the largest radiation cooled, glass envelope,
> tube
> made was probably the 2000T. Are these some CB urban myths or what?
>
> 73
> Bill wa4lav
>
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