Re: [Amps] 5 kw amps -- why?

["Peter Frenning, OZ1PIF" <oz1pif@privat.dk>]

Unlike beautiful women you CAN make a both beautiful AND usable Balun 
yourself - take a 35mm or bigger 4C65 core and a length of RG400 Coax; wind 
as many windings on the core as will fit (8 will do nicely from 160m to 
above 10m) and fit the whole thing into a Marine Quality junction box 
equipped with a PL socket, and three stainless steel eyebolts, and you'll 
have a pleasing wetherproof 1:1 balun that'll last a lifetime and carry 
legal limit almost indefinitely...

This is what carry my HB W3DZZ into the air.....

Vy 73 de OZ1PIF, Peter

**********  OZ1PIF **************
email: oz1pif(no-spam-filler)@privat.dk
http://home24.inet.tele.dk/oz1pif/
Ph. +45 4619 3239
Snailmail:
Peter Frenning
Ternevej 23
DK-4130 Viby Sj.
Denmark
***********************************
----- Original Message ----- 
From: "hermans" <on4kj@skynet.be>
To: "'R.Measures'" <r@somis.org>; "'Barry Kirkwood'" <bjk@ihug.co.nz>
Cc: "'Rob Atkinson, K5UJ'" <k5uj@hotmail.com>; <amps@contesting.com>
Sent: Wednesday, October 20, 2004 4:51 PM
Subject: RE : [Amps] 5 kw amps -- why?




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