Re: Rewind BL2?

Posted by Guy, K2AV on
URL: http://elecraft.85.s1.nabble.com/Rewind-BL2-tp4687794p4688704.html

Probably shouldn't mess with it.  The blocking impedance of both
halves in parallel is quite large, and more importantly allows you to
carry current overall at the rated power by dividing the current
between the two.  Put them in series and both are forced to carry the
same current, and power handling ability is cut in half at 1:1.

73, Guy.

On Sat, Mar 6, 2010 at 7:00 PM, KU4AF <[hidden email]> wrote:

>
> Jim,
> Instead of rewinding, how about just connecting the two bifilar windings in
> series?
>
> John, KU4AF
> Pittsboro, NC
>
>
> Jim AB3CV wrote:
>>
>> I don't have a real use for the 4:1 winding mode of the BL2. Is it
>> possible to make more effective use of the cores if it was rewound
>> just for 1:1?
>>
>> Right now it seems like in 1:1 position (if I'm reading the schematic
>> right) the choke halves are in parallel, effectively halving their
>> impedence.
>>
>> jim ab3cv
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