Videokarma.org

Go Back   Videokarma.org TV - Video - Vintage Television & Radio Forums > Vintage TV & Radio Tech Forum

We appreciate your help

in keeping this site going.
Reply
 
Thread Tools Display Modes
  #1  
Old 09-15-2018, 05:18 PM
EdKozk2 EdKozk2 is offline
Tinker
 
Join Date: Mar 2014
Location: Elkhorn, WI
Posts: 505
6RP22 tube

Hi,
Is anyone familiar with the 9 pin miniature 6RP22 vacuum tube? I couldn't find any specs for this tube, online. The ones I have were manufactured in Japan for Sylvania/ GTE. Were they used in Sears sets ?
Ed
Reply With Quote
  #2  
Old 09-15-2018, 06:04 PM
jr_tech's Avatar
jr_tech jr_tech is offline
VideoKarma Member
 
Join Date: Sep 2009
Posts: 3,821
Not much, but this is the only pinout that I have found for this miniature power pentode.

http://www.hp1.server-shared.com/hp1/newpage182.html

jr
Reply With Quote
  #3  
Old 09-15-2018, 07:31 PM
EdKozk2 EdKozk2 is offline
Tinker
 
Join Date: Mar 2014
Location: Elkhorn, WI
Posts: 505
Quote:
Originally Posted by jr_tech View Post
Not much, but this is the only pinout that I have found for this miniature power pentode.

http://www.hp1.server-shared.com/hp1/newpage182.html

jr
Thank you jr,
That's just what I was looking for.
Last week an ARF member gave me a Motorola 17K1BA set. As my son and I were about to load up the set he asked me if I would take some old tv tubes he no longer needed. I thought it was a small box of series string tubes. It ended up being probably over 500 NOS tubes in over 6 boxes. Mainly 60's and 70's types.
Ed
Reply With Quote
  #4  
Old 09-15-2018, 08:42 PM
WISCOJIM WISCOJIM is offline
VideoKarma Member
 
Join Date: Sep 2005
Location: Grand Chute, Wisconsin
Posts: 2,006
Talking

And here I was expecting it to be a tiny color CRT with the P22 phosphor.

.
Reply With Quote
  #5  
Old 09-15-2018, 09:12 PM
Notimetolooz's Avatar
Notimetolooz Notimetolooz is offline
VideoKarma Member
 
Join Date: Mar 2014
Location: Dallas, TX
Posts: 178
Quote:
Originally Posted by WISCOJIM View Post
And here I was expecting it to be a tiny color CRT with the P22 phosphor.

.
Me too. I wondered how they would pull that off with just 9 pins!
Reply With Quote
Audiokarma
  #6  
Old 09-15-2018, 09:36 PM
N2IXK's Avatar
N2IXK N2IXK is offline
Technohippie
 
Join Date: Apr 2011
Location: Sittin' on the "Group W" bench...
Posts: 768
Properly called a 6R-P22, this is one of the Japanese "JIS" types that was used by Sears/Silvertone and others in the 1960s.

It doesn't have a direct EIA equivalent that I am aware of, as some of the JIS types do.
Reply With Quote
  #7  
Old 09-18-2018, 11:59 AM
zeno zeno is offline
VideoKarma Member
 
Join Date: Mar 2013
Location: New Hampshire
Posts: 3,188
Correct !
They were used in the very first Jap sets. Soon they went to normal numbers
& used mostly common US designed tubes.
https://www.radiomuseum.org/tubes/tube_6r-p22.html

73 Zeno
LFOD !

Quote:
Originally Posted by N2IXK View Post
Properly called a 6R-P22, this is one of the Japanese "JIS" types that was used by Sears/Silvertone and others in the 1960s.

It doesn't have a direct EIA equivalent that I am aware of, as some of the JIS types do.
Reply With Quote
  #8  
Old 09-18-2018, 08:20 PM
Robert Grant's Avatar
Robert Grant Robert Grant is offline
VideoKarma Member
 
Join Date: Feb 2008
Location: Monroe County, MI
Posts: 474
About 15 years ago, I was at an old radio meet or a hamfest, and someone who sells tubes had loads of these tubes, Sears branded (or they may have been 6R-SP22). The dealer had no idea what they were for.
I looked at the tubes closely, noting the shapes and spacing of the grids, and told him I thought the tube might be similar to the 6CL6 (broadband power pentode), but by no means necessarily the same base as a 6CL6.
Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 07:00 PM.



Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
ęCopyright 2012 VideoKarma.org, All rights reserved.