[Amps] construct ferrite "line isolator"

[Carl]

----- Original Message ----- 
From: "Bill, W6WRT" <dezrat1242 at yahoo.com>
To: <amps at contesting.com>
Sent: Wednesday, October 27, 2010 4:01 AM
Subject: Re: [Amps] construct ferrite "line isolator"


> ORIGINAL MESSAGE:
>
> On Tue, 26 Oct 2010 21:02:15 -0400, "Carl" <km1h at jeremy.mv.com> wrote:
>
>>Straight from the Micrometals spec sheets and then some testing.
>
> REPLY:
>
> Carl:  In your original post you said "A 6 mix iron powder is good for
> 6-10M" and you quote Micrometals data sheet. But according to the
> Micrometals data sheet at http://www.micrometals.com/materialchart.html
> it is good for 3-40 MHz, essentially the same as Palomar mix #6.
>
> Are you saying your testing shows Micrometals is wrong and it is only
> good from 28-54 MHz? Have you notified them of their error? What was
> their response?
>
> 73, Bill W6WRT


Your missing the point as usual Bill in your ongoing attempts to provoke 
arguments.

First there is no such thing as a Palomar toroid and they cant even copy the 
data properly, maybe you should write a long letter of complaint. Their 
powdered iron toroid offerings are made by Micrometals.

Secondly I believe I fully explained why a 6 mix (or any toroid) application 
is wire size dependent. If youre able to follow the math it should be 
obvious. The 6 mix works very well in a 6M input circuit, only 4-6 turns are 
required on a T-80 form. At a quick glance the published specs would 
indicate a 10 mix is better, however its temperature stability is poor and 
drifts considerably at 100-200W of RF.

There are many things the catatalog sheets do not fully explain, it requires 
a bit of amp building experience.

Carl
KM1H