Topband: Air Wound Coil

[Tim Shoppa]

That is a very nice transmitter tank coil for a kilowatt amplifier. But if you have already calculated or measured the inductance you need, you can just wrap reasonable gauge insulated wire around any cardboard or plastic form you find. I used magnet wire around a cardboard tube. You can see a picture of the coil I wound for my 160M antenna match here, along with some other more complicated link coupled tuners:  http://n3qe.org/tuners.html

Tim N3QE

> On Aug 30, 2018, at 2:44 AM, MR TREVOR DUNNE <ei2glb at eircom.net> wrote:
> 
> Hi All
> 
> I'm looking for an Air wondering coil like in this link,
> 
> http://www.mfjenterprises.com/Product.php?productid=404-0669
> 
> I've had one on order from MFJ via a UK company for 4 months now and no sign of it, I want to build a at matching network for my 160m inverted T using it or something similar,
> 
> Can anyone tell me where I can get one of these or similar that is in stock today,
> 
> I don't have access to the tools/parts to wind one my self,
> 
> Thanks
> Trevor
> EI2GLB
> _________________
> Topband Reflector Archives - http://www.contesting.com/_topband