5itu wrote:
Hello,

I'm building the "FARA"amplifier (QST June 2003).
Unfortunately, I 'm not able to get the T-3/4 cores, so I wonder whether I
couldn't take two ferrite cores used to avoid the RFI made by the wiring of
computers ?
Obviously, I will try it but I would like to get some advices before...

73 Daniel


Usually, the ferrite cores used for RFI rejection are made of the
same stuff as those used in broadband power transformers so it
might work. However those cores are split in two for easy
application. Glue them together first with a good grade of epoxy
keeping the glue layer as thin as possible. The power handling
may not be as good as the real McCoy though.....