[Heath] Heath Digest, Vol 99, Issue 1

[Dave Hollander]

The TT-1 and TT-1A was a Heathkit only tester designed by Heathkit and 
only made by Heathkit. The TT-1 was a professional grade tube tester.

The low end Heathkit emissions testers were pretty much the same as the 
Eico and Knight emissions testers. The circuits were nearly identical 
along with the settings.

Dave N7RK
-- 
Dave Hollander N7RK
Arizona Tube Supply
http://arizonatubesupply.com

Ham Radio Page
http://n7rk.com