# 803 Vacuum tubes for sale (fwd)
---------- Forwarded message ----------
Date: Wed, 14 Jan 1998 14:51:35 EST
From: FutureT <FutureT-at-aol-dot-com>
Subject: # 803 Vacuum tubes for sale
Build a small tube type Tesla coil using these # 803 pentode
vacuum tubes with rugged graphite plates. I have three of them,
they're either new or like new.
I've obtained a 7" spark output using one of these tubes powered
by a microwave oven tranny. Two tubes should give a 9 1/2" spark,
and 3 tubes should give a 12" spark. With careful design, I think
more spark output can be obtained.
These transmitting type tubes measure 2 1/2" dia, x 9" tall. Willing to
sell separately or together.
Shipping by UPS ground is additional. E-mail me directly with your
zip-code and I'll figure the shipping charges. Also let me know how
many tubes you're interested in. I'll include a workable schematic
for a tube coil, if desired.