[Amps] 5 kw amps -- why?

[Peter Frenning, OZ1PIF]

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 at arnet.com.ar>
To: "Peter Frenning, OZ1PIF" <oz1pif at 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 at skynet.be>
>> To: "'R.Measures'" <r at somis.org>; "'Barry Kirkwood'" <bjk at ihug.co.nz>
>> Cc: "'Rob Atkinson, K5UJ'" <k5uj at hotmail.com>; <amps at contesting.com>
>> Sent: Wednesday, October 20, 2004 4:51 PM
>> Subject: RE : [Amps] 5 kw amps -- why?
>>
>>
>>
>>
>> -----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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>