Id be temped to use a BIG powdered iron T-400A-2 and wrapped with #12
Teflon wire over the Scotch 27 wrapping. Follow the various on line formulas
for winding info.
I simply do not like ferrites at that power level and others with ACTUAL
experience are invited to jump in.
Carl
KM1H
----- Original Message -----
From: <donroden@hiwaay.net>
To: <amps@contesting.com>
Sent: Wednesday, March 28, 2012 3:50 PM
Subject: Re: [Amps] Guidelines.....toroids for tank ckts
>
>> On 3/24/2012 3:24 PM, Carl wrote:
>>> I would not recommend toroids above 40M and even there its iffy at high
>>> power.
>
> More antenna than "amps" , but what about a 4:1 bal-un for 20/15/10 meters
> ?
>
> What would be a good design that would be rated maybe three times more
> than
> required for 1500 pep out ? ( I don't want to have to climb the tower
> twice to replace a smoked transformer. )
>
> Don W4DNR
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