Back in the day a lot of money was made from tube testers. Just because it shows in the red doesn't mean its bad it means they wanted to sell you a tube 😅. It can still work but not at its best. You're absolutely right. If it reads in the red its questionable. Tube testers are overrated unless its a military grade tube tester they operate the tube under load at maximum voltage. I have a little small tube tester and it has very little components its basically a test to see if the filiments are good and if it has any emissions at all. You have to know your own equipment.
So true, they are a very much an instrument that you get to know and as the venerable Shango has demonstrated so many times they seldom agree so you pick the one that tells you the good news Ha ha.
I wonder if an old degaussing coil can be temporarily used as a loop antenna. When I was working on radios and needed a loop antenna I would just take a line cord and wind it in about a six inch circle about 5 turns and it would work its not that critical but not optimal. The antenna trimmer alignment must be done with the sets antenna.
When the Tube Tester is in the "Red" it's bad not "questionable" The "Yellow" area with the "?" means "questionable" I'm just adding this comment because when you checked the second tube it was in the "red" and you kept saying it was "questionable" . This may be a bit mis-leading for those who are new in vintage electronics by you saying the wrong readings when testing these tubes. There is a '?' question mark on the gauge and the reason they used a question mark is just that - meaning "questionable".
Good insight. As you know, we rarely trust tube testers for significant results, other than for filament opens. Most techs just use them for that purpose. I have been over this on other videos over the years. If I get any needle deflection at all it is an indication of some emmission, and the tube may work, even if weak. Buit your point is well-taken.
Well, I mean with traffic lights, if it's red, it just mean's it's a questionable idea to go ahead through the intersection, not necessarily bad... You just got to cross your fingers like him!
@@spitfeueranna Agreed, some sets will be happy with a low emission it depends on where it is and how strong your signal is and how hard you drive the heater. 1V tubes are so picky. Pick the best as it all you have.
1st summertime Rockford Illinois view
Hello Kent good to see you again 👍
Back in the day a lot of money was made from tube testers. Just because it shows in the red doesn't mean its bad it means they wanted to sell you a tube 😅. It can still work but not at its best. You're absolutely right. If it reads in the red its questionable. Tube testers are overrated unless its a military grade tube tester they operate the tube under load at maximum voltage. I have a little small tube tester and it has very little components its basically a test to see if the filiments are good and if it has any emissions at all. You have to know your own equipment.
So true, they are a very much an instrument that you get to know and as the venerable Shango has demonstrated so many times they seldom agree so you pick the one that tells you the good news Ha ha.
I wonder if an old degaussing coil can be temporarily used as a loop antenna. When I was working on radios and needed a loop antenna I would just take a line cord and wind it in about a six inch circle about 5 turns and it would work its not that critical but not optimal. The antenna trimmer alignment must be done with the sets antenna.
I’ll be the degaussing coil would work. But usually it’s just a few windings of wire like you did.
When the Tube Tester is in the "Red" it's bad not "questionable" The "Yellow" area with the "?" means "questionable" I'm just adding this comment because when you checked the second tube it was in the "red" and you kept saying it was "questionable" . This may be a bit mis-leading for those who are new in vintage electronics by you saying the wrong readings when testing these tubes. There is a '?' question mark on the gauge and the reason they used a question mark is just that - meaning "questionable".
Good insight. As you know, we rarely trust tube testers for significant results, other than for filament opens. Most techs just use them for that purpose. I have been over this on other videos over the years. If I get any needle deflection at all it is an indication of some emmission, and the tube may work, even if weak. Buit your point is well-taken.
Well, I mean with traffic lights, if it's red, it just mean's it's a questionable idea to go ahead through the intersection, not necessarily bad...
You just got to cross your fingers like him!
@@spitfeueranna Agreed, some sets will be happy with a low emission it depends on where it is and how strong your signal is and how hard you drive the heater. 1V tubes are so picky. Pick the best as it all you have.
Do you have a dim bulb tester
Yes and most of the time I use it. But have not used it on T/O sets much.