Current baluns:

If you have a ferrite rod from an old am radio, this guy shows you a cheap
1:1 balun:
http://www.arising.com.au/people/Hol...ph/CMBalun.htm

If you already have a toroid you wish to use, just wrap it the same, a
bifilar winding, with the two starting ends hooked to your coax connector,
other two ends to your antenna.

You will want the inductive reactance of the winding to be ~4X the impedance
of the coax (or antenna) at the lowest frequency of operation. This will be
computed using the al factor from the specific toroid core you have...

This works for me... and is a simple way to remember/do it... if others
have a simplier/better way--I am sure they will comment...

Warmest regards,
John

"Jayson Davis" wrote in message
...
I'd like to make a 1:1 balun, similar to what you'd buy from Van Gorden
Engineering. Anyone know of online designs/prints/instructions?

Thanks