[R-390] Balanced Antenna Input Question

[Roy Morgan]

On Dec 8, 2008, at 8:44 PM, Richard W. Solomon wrote:

> I found the answer to what I should use. It was suggested
> I use a Guarella Balun (4:1 is close enough).

See:
www.n0ss.net/qrp_4-1_guanella-type_balun.pdf

If you use a small enough toroid core, you can fit it inside the  
twinax connector, put the BNC chassis mount into the coax jam nut  
(Thread the nut, or file the BNC and force fit.) and have a very  
compact unit.

Roy

Roy Morgan
k1lky at earthlink.net
529 Cobb St.
Groton NY, 13073