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

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

Hi Guillermo
4C65 is a material designator from "Ferroxcube" (formerly "Philips"), a High 
Impedance material, primarily designed for RFI suppression, it's generally 
known as "Type 61" material on the western side of the Atlantic Ocean...

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: "GGLL" <nagato@arnet.com.ar>
To: "Peter Frenning, OZ1PIF" <oz1pif@privat.dk>
Sent: Thursday, October 21, 2004 1:08 AM
Subject: Re: [Amps] 5 kw amps -- why?


> Hello Peter, please, can you explain me what's a "4C65" core?.
>
> Many thanks in advance
> Best regards
> Guillermo - LU8EYW.
>
> P.S.: I built my own 1:1 balun with RG58, as many turns that fitted a 30 
> cms. long and 5cms diameter tube. But not running power here!
>
> Peter Frenning, OZ1PIF escribió:
> > 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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> >
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> >
> >
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