In article ,
Mike Lee wrote:
Hi Group,
After many years I have dug out my soldering iron and looking at an old
RF preselector diagram.
The main is a 40673 dual gate mosfet transistor.
I have tried Maplin and google but to no avail.
Is there an equivalent to this 40673?

I have also got an unused MPF102 but I would rather use the 40673 if it
is at all possible.

It's a commercial version (cheap) of the 3N187. Both datasheets
are on my ftp site at ftp://ftp.eskimo.com/u/m/mzenier/RCA40673 and
ftp://ftp.eskimo.com/u/m/mzenier/RCA3N187 .

Mark Zenier Washington State resident