My favorite would be the 539C. It is well sought after, so the prices
tend to be high. The 539 A and B are great too, just older. The 750,
and 752 are nice too, as is the 600.

For a complete list with some history, try:

http://6007.us/

-Chuck Harris

Jump'n Jack Flash wrote:
Good Point. What is a good model of Hickok?
"Chuck Harris" wrote in message
...
Jump'n Jack Flash wrote:
I am looking to buy a heathkit tube tester. Can anyone enlighten me on
the order of model number. Is TC1 the earliest and the TC2, TC3, and
finally TC17 and or is there major differences in the models. I can't
seem to fine any catalog info on these.
Thanks
Did you want the Heathkit for a collection, or to use?

The reason I ask, is the Heathkit is an emissions tester, and as a result,
doesn't actually test anything but the cathode of the tube, and to check
for
shorts.

Any of the Hickok machines would be a much better choice. They are all
dynamic
mutual conductance (Gm) testers... (But then, with a used Heathkit, you do
get
the added advantage of having a unit that was soldered by a hobbyist;-)

-Chuck