View Single Post
  #65  
Old 05-10-2013, 12:23 PM
earlyfilm's Avatar
earlyfilm earlyfilm is offline
Eternal Member
 
Join Date: Jun 2011
Location: Culpeper, VA
Posts: 527
Quote:
Originally Posted by Eric H View Post
This set uses three 1B3's by the way, not 8016's, maybe a different version?
My 1949 made 8PCS41 cabinet sticker calls for the 8016.

Between it and the other 1949 9PC41 I had one 8016 (probable replacment) and two RCA branded 1B3/8016. The rest were replacment 1B3.

Quote:
Originally Posted by John Folsom View Post
The 8016 is just the developmental number for the 1B3. Same thing.
Usually interchangable, but:

8016 = PIV 10,000 max, Ip = 7,6 max ma, average 2 max ma (1942 data)
1B3/8016 = PIV 30,00 max, Ip = 17 max ma, average 2 max ma (1949 data)
1G3/1B3 = PIV 33,000 max, Ip = 35 max ma, average 1.1 max ma (1965 data)

As the tubes improved the PIV increased, the short-flow current increased, but the average-flow current decreased. I would not put a 1G3 in an RCA projection set.

James
Reply With Quote
Audiokarma