[R-390] Tube Testers

[Charles Steinmetz]

Dave wrote:

>I am preparing to restore my first 390A.  My question to you all is 
>what is a good universal tube tester to have around and what would 
>might be a good price?

Honestly, there is no need for a tube tester unless you have a pile 
of used tubes you are going to sell and want to be able to say they 
"test good."  The circuit the tubes are used in is always the best 
tube tester money can buy.  If you get some tube extenders with test 
points, you can measure all of the tube voltages from the tube side 
of the chassis.

Best regards,

Charles