[Amps] 160M PI network Toroidal Coil

[Louis Parascondola]

Why not use a close wound wire coil.  There is plenty of room.  Built a mono 160m Clipperton L  using a wire coil.  Amp works great and there is less room in there than the 220.  Performance is great.  100 in 1500+ out.



-----Original Message-----
From: km1h at jeremy.mv.com
To: amps <amps at contesting.com>; Paul Baldock <paul at paulbaldock.com>
Sent: Sat, Oct 5, 2013 7:11 am
Subject: Re: [Amps] 160M PI network Toroidal Coil



Micrometals 2 mix, usually a stack of 2 T200-2's wrapped with Scotch 27 
tape, then Teflon insulated #14 stranded or solid.
However starting from scratch will require about twice the inductance of 
just adding 160 to the amp.

Use the Micrometals turns calculators to see if it fits. If not there are 
wider choices.

Carl
KM1H

----- Original Message ----- 
From: "Paul Baldock" <paul at paulbaldock.com>
To: <amps at contesting.com>
Sent: Friday, October 04, 2013 10:47 PM
Subject: [Amps] 160M PI network Toroidal Coil

> I'm going to convert a SB221 to a single band 160M amp. It seems most of 
> the amps these days use a toroidal coil for the 160M Output PI network. 
> Does anybody know what cores are typically used for the 160M toroid?
>
> Thanks
>
> - Paul   KW7Y
>
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