Steve, Waseem,

I was too general when I posted my request.
What I meant was sites where I can browse the specs and order on line. I have not finalised on any except for the following general specs,

E or EFD type (size 18-25 like E20,EFD20, etc), preferably horizontal mount bobin

AL = 1000 - 2000 mH/1000turns.

I have identified one (E-77-188)from Amidon Products.(http://www.bytemark.com/amidon/content2.htm)

However I would like to look at others before choosing one.

Leo