Since one TV-7 isn't good enough....

[Synaxis]

I bought two!

Both recently refurbed and calibrated by TV-7 guru Dan Nelson.

I received them yesterday and spent about 2 hours gently taking cleaner and cleaning them up a bit.

They were already in great condition, but my OCD wanted them as clean - and germ free after 60 years - as possible.

I'm selling my Hickock 6000 (better than the 6000A for audiophiles) to help pay for these and I may end up parting with one of these to fund getting a third different one. We'll see.

 

[djsina2]

I don’t think germs live 60 years.

 

[Don Reid]

What is a TV7?
The University of Chicago did an experiment wherein various germs and germ spores were placed on various objects inside a securely fenced outside area. After 100 years of Chicago winters and summers anthrax germs were were still alive and seemingly capable of causing infections. So Synaxis' caution might well be justified.

 

[Synaxis]

What is a TV7?
The University of Chicago did an experiment wherein various germs and germ spores were placed on various objects inside a securely fenced outside area. After 100 years of Chicago winters and summers anthrax germs were were still alive and seemingly capable of causing infections. So Synaxis' caution might well be justified.

Hi Don,

The TV-7 is a military tube tester that is fairly highly sought after.

The ones I bought had been to Dan Nelson who is considered the foremost expert on them so he goes through them, updates the internals and can typically dial them in so that rather than 20% accuracy they are within a couple of % points.

For many people it's more tube tester than they need. For me where I have such a very wide variety of tubes it's exactly what I need to be able to test everything from 814 tubes, 807's, 300B, 2A3, 45 tubes, type 80 rectifiers, 5AR4's, etc. etc. all on one unit.

In fact most tube testers won't work for me as an all-in-one solution and will only cover a small portion of the tubes I have and test. The TV-7 and TV-10 are the two that work for me.

In fact I am looking to buy a nice condition TV-10 since that will test one other tube type I need that the TV-7 won't test. There is one on Ebay right now that is overpriced by about $500 and the seller is kinda a jerk in trying to engage him.