Im not aware of them using ferrites in that amp as it is bandswitching with
bandpass filters which by definition are usually powdered iron. The 10M kit
I added for a customer in the early 80's certainly used powdered iron and so
did the rest if I remember by the turns counts and fixed caps used.
Carl
KM1H
----- Original Message -----
From: "Jim Brown" <jim@audiosystemsgroup.com>
To: <amps@contesting.com>
Sent: Wednesday, October 28, 2009 11:46 AM
Subject: Re: [Amps] IC-2KL 80m toroid value
> On Mon, 26 Oct 2009 18:54:05 -0700 (PDT), Brian Moran wrote:
>
>>A local ham in our club has an Icom IC2KL with a cooked 80m toroid.
>
> Where is this coil in the circuit? In the input or the output? How
> is it "cooked?" Has the wire open circuited? Has the core cracked?
>
> Fair-Rite is the mfr of most ferrite materials sold in NA. Their #61
> material and #67 material are the ones that have low loss at HF, so
> they are the ones you would want to use if the coil is seeing much
> power.
>
> 73,
>
> Jim K9YC
>
>
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