Tio Pedro wrote:
Has anyone tried using a 6JH8 first mixer in a
HBR receiver project ? How did it compare to the
7360?

I have not, although I have used the 6JH8 for product detector designs
before and they are just fabulous. I think they are certainly the equal
of the 7360.

There are a bunch of other sheet-beam tube designs out there as well,
also intended for color TV chroma demodulators like the 6JH8. They
are all fairly similar.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."