1. Home
  2. misc-audio
  3. 1173746369

Help with tube tester

I have a chance to buy a bunch of electronic equipment from an out of business electronic store. I would do so because it includes tubes and some tube testers. It also includes some old recievers, preamps etc. He wnats to sell the stuff all as one lot. I am new to tubes but learning and would like to pick up a tester. The guy says he has a Supreme Radio Diagnometer Master Series #301 by Supreme Instruments in a nice oak box and also a Supreme Model #35 tester. Anyone know anything about these, such as possible price and value to me so that I can test the 6922, 7308 E88cc type tubes that my preamp uses? I know enough to know that I should go over and see the stuff and take down some model numbers and tube numbers to have a better idea of what has got. Any help even pointing me in the correct direction would be of great help. Thanks
gammajo
gammajo's avatar
gammajo OP
798 posts
 
I purchased a B&K 606 on ebay and used it for the first time tonight. What a sweet little unit. Very easy to understand and use. Only two things I am not sure of. One is it says to wait for the tube to warm up. I assume that means about a minute - but I know some feel that tubes take 30 minutes to fully warm. Anyone know how long to warm before performing a test?
Second is in the middle of the socket bank, there is an 6 inch wire with a cap sticking out. There is no reference in the instructions to what that is for. Anyone know?
Thanks
Joe
tvad
9,467 posts
 
Joe, let the tube warm up for a few minutes...no need for more than five.

The little cap with a hat is a tube condom.

No. It's used for tubes that have a connection on the top of their bottles. You'll know one when you see one. I'll bet you'll never need it.
gammajo's avatar
gammajo OP
798 posts
 
Thanks Tvad.
nr9
35 posts
 
What about the AT1000? Isn’t this a prima tester for audio use?
http://www.amplitrex.com/at1000.html
viridian's avatar
viridian
4,184 posts
 
The wire with the cap on it is for tubes that have an anode cap. Most common for audio use are the 807, which is similar to 6L6. VTL made some really nice amps that use them and the classic Stancor amps use them as well.
More to discover