[HBR] Re: BC-453 IF Transformers

[Chad H. Phillips]

Hello, all! This is my first post to the HBR
reflector. My situation is similar to Tim KA0BTD's -
planning an HBR-influenced receiver project, almost
ready to build but still wondering about 2nd IF
transformers...

I started out researching ways to improve the low-end
tube receivers I see on eBay. I initially chose this
route because I crave tube experience (thinking,
building, listening with tubes) but I am not
interested in competing with the well-funded
collectors buying up all the good stuff. While reading
QST late one night, I came across Crosby's 1963
articles... soon found Kees Talen (K5BCQ)'s excellent
HBR website... and now I am intent on building a
receiver.

I have seen the junker BC-453's on eBay. On one
auction photo, I could even make out "85KC" stamped on
the side. Can anyone advise on the characteristics of
each unit in the set of three, and (if different)
which ones are suitable for use in an HBR? Are they
typically recoverable in good condition? Any problems
with deterioration of materials in the can? Is the
top-hat knob for adjusting coupling, or just a cover?

Incidentally, does anyone have any experience or
opinions on constructing IF xformers as described on
the following website?:
http://www.angelfire.com/electronic/funwithtubes/IF_Can-1.html

Regards,

Chad KE4KMH