UK Vintage Radio Repair and Restoration Powered By Google Custom Search Vintage Radio and TV Service Data

Go Back   UK Vintage Radio Repair and Restoration Discussion Forum > Specific Vintage Equipment > Vintage Television and Video

Notices

Vintage Television and Video Vintage television and video equipment, programmes, VCRs etc.

Closed Thread
 
Thread Tools
Old 30th May 2017, 12:33 am   #1
petertheorgan
Hexode
 
petertheorgan's Avatar
 
Join Date: Dec 2006
Location: Bromley, Kent, UK.
Posts: 332
Default Radar Cathode Ray Tube Reactivator Type 202.

I have been given a Radar type 202 CRT tester and reactivator. It produces the heater volts as requested, but I am unable to get any readings for emission. It appears to have HT, LT and the meter is working on other ranges, but I cannot produce any measurable beam current.
I have the instruction sheet but I just wondered if anybody had a circuit or knew where I could obtain one.
Thanks again in advance,
Peter
petertheorgan is offline  
Old 30th May 2017, 7:23 am   #2
thermionic
Heptode
 
thermionic's Avatar
 
Join Date: Apr 2003
Location: Cornwall, UK.
Posts: 986
Default Re: radar cathode ray tube reactivator type 202

Hi Peter.

I have one of these too, but alas, I have no circuit either to help you!

Problems I have had on mine were with dry joints & oxidisation on the wafer switch contacts. The Clear Short push switch became intermittent, disconnecting the meter movement, and a couple of the 20 percent carbon comp resistors had far exceeded their intended tolerance!

I hope you get to the bottom of this - I've found mine to be very useful.

I'm away from home at the moment, but I'm happy to take voltage readings for comparison with mine if that helps.


SimonT.
__________________
The honesty of imperfection..........

Last edited by thermionic; 30th May 2017 at 7:26 am. Reason: Extra info
thermionic is offline  
Old 30th May 2017, 8:06 am   #3
Restoration73
Nonode
 
Restoration73's Avatar
 
Join Date: Jun 2013
Location: Surbiton, SW London, UK.
Posts: 2,801
Default Re: radar cathode ray tube reactivator type 202

I also have one of these but have not yet traced the circuit. However that in post #6 is
very similar:
https://www.vintage-radio.net/forum/...ad.php?t=65435
Restoration73 is offline  
Old 30th May 2017, 6:32 pm   #4
Freya
Octode
 
Freya's Avatar
 
Join Date: Jan 2009
Location: Falmouth, Cornwall, UK.
Posts: 1,987
Default Re: Radar Cathode Ray Tube Reactivator Type 202.

One of the best around in my opinion, you need to have the lead connected to pin 6 on the octal plug (also A3) and the final anode to get the beam current emission displayed.
__________________
Stephen
_________"It`s only an old telly" ___
Freya is offline  
Closed Thread

Thread Tools



All times are GMT +1. The time now is 6:41 am.


All information and advice on this forum is subject to the WARNING AND DISCLAIMER located at https://www.vintage-radio.net/rules.html.
Failure to heed this warning may result in death or serious injury to yourself and/or others.


Powered by vBulletin®
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Copyright ©2002 - 2023, Paul Stenning.