Commerical Trades Institute TC 20 Tube Tester

wmorrow397 · **Posted:** Jul Fri 09, 2010 12:18 am

Picked one of these up cheap but with no manual or chart. Does anyone have one they would be willing to share?

Larry

Tubesaver · **Posted:** Jul Fri 09, 2010 12:26 am

Hi Larry,
Just let me find the time to scan some tube chart and maybe a little part of the manual, I haven't a full manual but this tester is easy to use, the settings and schematic are almost identical to the Heath TC2 of wich this is a clone.
Ciao.
Max

wmorrow397 · **Posted:** Jul Fri 09, 2010 1:54 am

Max:
Thank you. Looking forward to getting the information from Sunny Italy.

Larry

Tubesaver · **Posted:** Sep Fri 17, 2010 7:07 pm

Hi all,
Now I have scanned all of my CTI TC.20 tube charts and 21 pages from the wiring manual, if anybody needs the data just let me know!

Ciao.
Max

Eric Allen · **Posted:** Jan Sat 22, 2011 10:37 am

Greetings, Tubesaver (Max from Italy)!

I see you have manuals scanned for the CTI TC-20 tube tester! I have the charts for setting up the tubes on the tester, but I have no other manuals for it. Any possibility that I could get a copy from you?

In particular, I'm trying to find out what the bold letters vs. the normal-type letters mean, when putting the switches up or down.

In case you can't tell, I'm new to tube testing, so any help would be appreciated!

Grazie! (I think I spelled that right!)

Eric in Minnesota

74superlead · **Joined:** Aug Fri 12, 2011 8:26 pm **Posts:** 1

Hi , I just got a CTI TC-20 . I just wondered if you would send me the manuals and diagrams . Thanks . Simon .

dschulma · **Posted:** Aug Fri 12, 2011 8:43 pm

Hey 74, please note (unless you already have) this thread is about one year old. So, you may or may not be getting a timely response

Mike0249 · **Joined:** Sep Tue 20, 2011 5:08 am **Posts:** 1

Could you send me the charts and manuals? I would greatly appreciate it! I picked up the tube tester today. It came with no manual.

honorman · **Joined:** Nov Tue 01, 2011 10:17 pm **Posts:** 2

Hi Max
I know this is old forum, but could you email me the charts for the Commerical Trades Institute TC 20 Tube Tester
Thanks Ed eddie0418@earthlink.net

Radiolabb · **Joined:** Apr Sun 08, 2012 4:59 am **Posts:** 1

Tubesaver wrote:

Hi all,
Now I have scanned all of my CTI TC.20 tube charts and 21 pages from the wiring manual, if anybody needs the data just let me know!
Hi Max...
Please could you email me the charts for the Commerical Trades Institute TC 20 Tube Tester
Thanks
Roberto.
romunho@ig.com.br

Ciao.
Max

honorman · **Joined:** Nov Tue 01, 2011 10:17 pm **Posts:** 2

Hi Radiolabb
Could you Please email me the CTI TC.20 tube charts and 21 pages from the wiring manual to eddie0418@earthlink.net
Thanks Ed

racecarkid · **Joined:** Jan Sat 14, 2012 7:46 pm **Posts:** 12

Can you please send one to me racecarkid8734@hotmail.com thanks

mitaud · **Joined:** Jun Fri 29, 2012 10:46 pm **Posts:** 3

I am another new member .
Is it possible for TUBESAVER to send me the material for TC-20 tester?
Thanks.. mitaud@gmail.com

marko1 · **Joined:** May Fri 03, 2013 11:15 pm **Posts:** 1

Reviving this old thread in hopes someone can forward me this data as well (markojerry at hotmail dot com), thanks in advance! In the meantime I'll look at the Heathkit TC-2 data.
I also have a CTI VT-20 VTVM coming, I'm guessing that may be a Heathkit clone as well?

Cheers,
Mark

rondoc · **Posted:** Oct Sat 26, 2013 2:35 pm

I could use it also please rwithey4444 at gmail dot com

mitaud · **Joined:** Jun Fri 29, 2012 10:46 pm **Posts:** 3

I asked for copies of this manual 2 years AGO AND HEARD NOTHING.....PERHAPS THIS SHOULD BE CONSIDERED A DEAD TOPIC? MITAUD@GMAIL.COM

boomer43 · **Joined:** Oct Fri 16, 2015 4:04 am **Posts:** 1

I just acquired a CTI TC-20 tube tester which works but not sure if I have all of the tube charts. I ended up with 4 large two-sided cards. I got one double sided sheet for instructions but ordered a reprint of manual off ebay...not here yet.
If anyone has any tube charts or would like copies of what I have, I would be happy to scan these and mail or attach them to email.
I am trying to restore an RCA table radio, 1935, model T 7-5. I ended up with it from my father-in-law's estate who got it from his dad. If I can get it working, I will pass it on to my eldest son.
I am somewhat new to this area of electronics but have been a ham radio operator since 1985 and worked on most of my own gear. Figured this might be a good forum to be associated with and perhaps trade parts, manuals, repair techniques, etc with other members.

easyrider8 · **Posted:** Oct Sat 17, 2015 12:19 am

Welcome to the forum. Tube data should be the same as the Heathkit TC-2, there is lots of data available for them.

Dave

mitaud · **Joined:** Jun Fri 29, 2012 10:46 pm **Posts:** 3

I have the setup dat for most tubes...from Heath IT-17 for any who needs it.

I would LOVE to see a service manual or schematic.

Glen

Commerical Trades Institute TC 20 Tube Tester

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