[Amps] 5 kw amps -- why?

[hermans]

-----Message d'origine-----
De : amps-bounces at contesting.com [mailto:amps-bounces at contesting.com] De
la part de R.Measures
Envoyé : mercredi 20 octobre 2004 16:34
À : Barry Kirkwood
Cc : Rob Atkinson, K5UJ; amps at contesting.com
Objet : Re: [Amps] 5 kw amps -- why?


On Oct 19, 2004, at 11:44 AM, Barry Kirkwood wrote:

> Well, I manged to fry a "1500W "  commercially made ferrite balun with

> significantly less than 1500kW out, let alone 3kW plus.

The ferrite used in commercial HF baluns typically has a mfg.'s max 
freq rating of 500KHz to 1MHz.  However, since balun mfg.'s usually 
test their products at <5w, they have no idea that there could be a 
problem.    My disillusionment with ferrite baluns began when I 
discovered that my 7MHz signal had harmonics above 500MHz that were 
strong enough to wipe out UHF line-of sight TV stations.

> Since then have lived in peace with my homebrew coax solenoid baluns.

Amen, Barry.  Beautiful baluns are like unto beautiful women.
*******************************************
Bad tongue ON


THEY ARE VERY EXPENSIVE AND RUN AWAY VERY QUICKLY.......

Bad tongue OFF

Jos on4kj
*******************************************
Richard L. Measures, AG6K, 805.386.3734.  www.somis.org

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