On Mar 18, 1:12*am, Robert casey wrote:
Looking thru a friend's Feb 2009 QST, saw an article on the W6TC "HBR"
double conversion homebrew radio. *Which my father may have built a copy
of. *I no longer have that radio, but looking at the pictures of teh sets
in the QST article, it looks very similar to what my father built. *I do
remember that he used a 1.8MHz crystal for what might have been the 1st IF
to 2nd IF conversion mixer. *I also remember, in the mid 60's (I was in
grammar school) getting this crystal for my father as an Xmas gift (well, I
gave him money that he used to order the crystal, I would not have been old
enough to know how to mail order stuff myself yet). *

Anyway, did the HBR use a crystal of a frequency like this as a conversion
local osc mixer? *Or maybe the crystal wasn't in an oscillator circuit, but
maybe as a bandpass filter? *

I dont know about HBR but Bill Orr published plans for a radio like
that.
The radio was intended to be use with external down converter to cover
all
the ham bands.I think it was a pretty popular construction project for
a lot
of hams.

pmillet has copies of old copyright expired books and I think they
have a copy of Bill Orr"s
handbook that will have the plans I am talking about. You can download
the books for free.


Jimmie