Tio Pedro wrote:

A lot of folks have reported good results using the 6JH8 in place
of the 7360; with a few reporting better linearity. They appear
to be pretty much the same as far as performance. Have you tried
one?

Yes I have. The results were disappointing compared to the 7360. Perhaps
my values weren't optimised. Maybe I should try again - the 6JH8 is /much/
cheaper!

Bob