Topband: Pennant Transformer

[Björn SM0MDG]

On 14 nov 2012, at 22:42, VO1HP <fdavis at nfld.net> wrote:

> --- so for  two turns I do this:
> one turn is: -  up through one side and down through the other side.
> another turn is - continue up one side and down through the other
> --- that makes two turns...is that correct?
> 
> Winding 7 turns would follow same procedure winding the wire over the primary wire
> and have the leads out the opposite end of the core from the primary?
> 
> I hope you can follow my primitive description.  Am I on the right track?

Too me that looks correct.

If you use enameled CU wire be careful if the edges of the core are sharp, then might scratch the insulation open.

I use an antenna analyzer to verify my transformers once they're done and mounted into their housing. Just put the 900 ohm resistor on the loop side of the transformer an measure the impedance on the coax side.


73 de Björn,
SM0MDG
SE0X