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Re: [Amps] Source for large purchase of toroids?

Subject: Re: [Amps] Source for large purchase of toroids?
From: Jim Barber <audioguy@charter.net>
Reply-to: audioguy@charter.net
Date: Tue, 26 Jan 2010 12:00:31 -0800
List-post: <amps@contesting.com">mailto:amps@contesting.com>
Aha!

I hadn't thought to check the "cable core" dimensions for one that looks 
like a toroid. That was the missing piece. They don't specifically have 
toroids in #31, but they have cable cores with the dimensions of 
toroids. Skewered by semantics again... ;-)

Thanks!!

73,
Jim, N7CXI

Bill Fikis wrote:
>   Jim,  I've  been  dealing with  Lodestone Pacific ..
>         www.lodestonepacific.com
> 
> 
> 
>  Some of  their  prices :
> **************************
>    Fairrite #'s
>     0431177081     mix 31 -  largest snap on - $9.39 ea.
>     2643803802     mix 43 -  largest  toroid   -  $3.79 ea.
>     2631803802     mix  31 - largest  toroid  -   $5.49 ea.
> 
>                their tel #  -  1-800-694-8089     Anaheim, Ca.
> 
>         I've  been  dealing with  Donald   Wennkamp
> 
>                                         Gl.  .....Bill  /  w2ay
> 
> 
> --------------------------------------------------
> From: "Jim Barber" <audioguy@charter.net>
> Sent: Tuesday, January 26, 2010 2:34 PM
> To: "AMPS" <amps@contesting.com>
> Subject: Re: [Amps] Source for large purchase of toroids?
> 
>> Good point.
>>
>> Since we're on the topic, I've seen references to Fair-Rite #31 toriod
>> cores in various places, but haven't been able to find any in their
>> catalog. Do they actually exist in the wild? Beads abound, but it would
>> be nice to be able to build high-impedance chokes in less than several
>> straight feet of cable.
>>
>> Thanks,
>> Jim, N7CXI
>>
>> Jim Brown wrote:
>>> On Mon, 25 Jan 2010 22:58:00 -0600, chas wrote:
>>>
>>>> ok, micrometals material codes are completely different from Fair-Rite.
>>>
>>>> so, what does Fair-Rite #31 = in MMetals?
>>>> ditto question of F-R   #43 = in MMetals??
>>>
>>> They are not "different codes." they are VERY DIFFERENT MATERIALS, have
>>> VERY different properties, and used for different purposes. Micrometals
>>> makes powered iron, which are primarily used for inductors. Fair-Rite
>>> makes ferrites, which are used as inductors, transformers, and
>>> suppressors.
>>>
>>> Fair-Rite #43 is a pretty generic VHF suppressor material, and several
>>> other companies make equivalents. Fair-Rite #31 is a new mix they
>>> developed about 10 years ago, and as far as I know, hasn't yet been
>>> copied.
>>>
>>>> where is the scientific data on their products, etc?
>>>
>>> See their website.
>>>
>>> It is CRAZY to go to all this trouble to try to find "generic
>>> equivalents" to Fair-Rite parts simply because Amidcon and Palomar are
>>> raping us with their prices. Instead, simply go to industrial
>>> distributors of Fair-Rite parts and buy them at the right prices, not
>>> Amidon or Palomar's inflated prices.
>>>
>>> 73,
>>>
>>> Jim Brown K9YC
>>>
>>>
>>> _______________________________________________
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>>> Amps@contesting.com
>>> http://lists.contesting.com/mailman/listinfo/amps
>>>
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