Forums :: Resources :: Features :: Photo Gallery :: Vintage Radio Shows :: Archives :: Books
Support This Site: Contributors :: Advertise


It is currently Jun Mon 18, 2018 5:50 pm


All times are UTC [ DST ]





Post New Topic Post Reply  [ 4 posts ] 
Author Message
 Post subject: Test data for UV-201 Tubes
PostPosted: Mar Sat 03, 2018 12:07 am 
Member
User avatar

Joined: Sep Mon 18, 2017 2:23 am
Posts: 780
Location: Plymouth, MI
How do you test UV-201's?

_________________
Dan

I know just enough to be dangerous.....
(Member - Michigan Antique Radio Club)


Top
 Profile  
 
 Post subject: Re: Test data for UV-201 Tubes
PostPosted: Mar Sat 03, 2018 1:06 am 
Moderator

Joined: Jan Thu 01, 1970 1:00 am
Posts: 36621
Location: Livermore, CA
Dan

Test the same as an 01A. A UV201 without an "A" draws 1 amp filament current but otherwise will test as UV201A.

Due to short pins may have problems making contact with a tube tester socket?

_________________
Norm


Top
 Profile  
 
 Post subject: Re: Test data for UV-201 Tubes
PostPosted: Mar Sat 03, 2018 1:13 am 
Member
User avatar

Joined: Jan Thu 01, 1970 1:00 am
Posts: 12205
Location: S. Dartmouth MA 02748-1225 USA
Dan,

Did you see my post in the rejuvenate topic? I fabricated an adapter for the short/long pin 4-pin tubes. It also allows for a live filament measurement. Some tube testers may not yield enough voltage vs the filament setting. Meaning, the line control pot/meter may tell lies. Measuring the 201 filament and getting it up to 5 volts will be important.
Do re-solder the pins...

20's fans would push the filaments up to get emission from the '01 no matter...

Chas


Top
 Profile  
 
 Post subject: Re: Test data for UV-201 Tubes
PostPosted: Mar Sat 03, 2018 1:33 am 
Member
User avatar

Joined: Sep Mon 18, 2017 2:23 am
Posts: 780
Location: Plymouth, MI
Norm- Thanks for the info.

Chas - I did see your post. A socket saver I made and posted awhile ago works with short pin tubes also, a double win. I usually clean up the tube pins with scotchbrite pads to get good contact.


Thank you both!

_________________
Dan

I know just enough to be dangerous.....
(Member - Michigan Antique Radio Club)


Top
 Profile  
 
Post New Topic Post Reply  [ 4 posts ] 

All times are UTC [ DST ]


Who is online

Users browsing this forum: Greg Dan, Jimmie Stewart and 9 guests



Search for:
Jump to:  
























Privacy Policy :: Powered by phpBB