Hello Rich,
Except for the fact that one receiver drove a Nixie display I never built
one with tubes. Now wouldn't that be something?
Yabbut, it'd be a little cumbersome for a wall clock. ;-)
In the shape of a mantle clock it would work. Open chassis, of course,
so the discerning visitor can admire. With nixies it would look really cool.
Regards, Joerg
http://www.analogconsultants.com