Warning: Creating default object from empty value in /homepages/11/d132647312/htdocs/Amfone/mkportal/include/SMF/smf_out.php on line 47
CV1090/VT90 & 931 Tube Info




 
The AM Forum
June 10, 2023, 01:52:32 PM *
Welcome, Guest. Please login or register.

Login with username, password and session length
 
   Home   Help Calendar Links Staff List Gallery Login Register  
Pages: [1]   Go Down
  Print  
Author Topic: CV1090/VT90 & 931 Tube Info  (Read 453 times)
0 Members and 1 Guest are viewing this topic.
WA2SQQ
Contributing
Member
*
Offline Offline

Posts: 1036


« on: February 06, 2023, 05:06:13 PM »

My mom always told me that the only dumb question is the one you don't ask. I just inherited a box of tubes from the estate of a close friend. Found two tubes that I'm really not familiar with. The 1st, which I believe is a CV1090 / VT90 appears to be some sort of radar tube. See photo attached

The second tube (I have two) is a "931" which is a photo multiplier tube. I give up, what were these used for?

Any additional info, on either, would be appreciated!


* CV1090_VT90.jpg (967.75 KB, 2400x1600 - viewed 99 times.)
Logged
Pete, WA2CWA
Moderator
Member

Offline Offline

Posts: 8019


CQ CQ CONTEST


WWW
« Reply #1 on: February 06, 2023, 06:59:05 PM »


The second tube (I have two) is a "931" which is a photo multiplier tube. I give up, what were these used for?

Any additional info, on either, would be appreciated!
Google is easy
A photomultiplier tube, electron multiplier tube that utilizes the multiplication of electrons by secondary emission to measure low light intensities. It is useful in television camera tubes, in astronomy to measure intensity of faint stars, and in nuclear studies to detect and measure minute flashes of light.
https://www.britannica.com/technology/photomultiplier-tube

Photomultiplier Information

931A Information
Logged

Pete, WA2CWA - "A Cluttered Desk is a Sign of Genius"
Pete, WA2CWA
Moderator
Member

Offline Offline

Posts: 8019


CQ CQ CONTEST


WWW
« Reply #2 on: February 06, 2023, 07:01:58 PM »

My mom always told me that the only dumb question is the one you don't ask. I just inherited a box of tubes from the estate of a close friend. Found two tubes that I'm really not familiar with. The 1st, which I believe is a CV1090 / VT90 appears to be some sort of radar tube. See photo attached

Any additional info, on either, would be appreciated!
CV1090 / VT90
Logged

Pete, WA2CWA - "A Cluttered Desk is a Sign of Genius"
Pages: [1]   Go Up
  Print  
 
Jump to:  

AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands
 AMfone 2001-2015
Powered by SMF 1.1.21 | SMF © 2015, Simple Machines
Page created in 0.049 seconds with 18 queries.