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 Post subject: Micronta VTM schematic
PostPosted: Dec Sat 25, 2010 10:24 pm 
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Location: Orrville, Ohio
A friend of mine ?? brought me a junker micronta VTVM model 22-025.
Have searched the net and ARF and NAir without success for a schematic.
Anyone have one or a source?
Thanks,
Scott


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 Post subject:
PostPosted: Feb Sun 06, 2011 12:29 am 
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Bump. Still looking for a schematic and/or manual for this one.
Anybody got info??


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 Post subject:
PostPosted: Feb Thu 10, 2011 10:23 pm 
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Try looking here:

http://www.eserviceinfo.com/index.php?w ... g=Micronta

Look at the bottom of the list for 22-024. In the 'Description' column it says the 22-025 is only different cosmetically.

Hope this helps,
Gary.


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 Post subject:
PostPosted: Feb Thu 10, 2011 11:17 pm 
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Thanks Gary. The info on that website is not accurate as the 22-024 is a transistor tester. The 22-025 is a VTVM.
I tried the site anyway but the file for the 22-024 would not load. Said bad file.

Anyway, the search continues.

Noticed you are a new member. Welcome to ARF. This is a great site with alot of smart people that provide great info.


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 Post subject:
PostPosted: Feb Fri 11, 2011 1:41 am 
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This is weird. Radio Shack must have reused the number.

First, I found a VTVM on eBay with that number:

http://cgi.ebay.com/Micronta-Vintage-Va ... 4156ab814f

And then I found this Micronta 22-025 Transistor Tester. Same number:


http://cgi.ebay.com/Vintage-Micronta-VT ... 5888296c2d


I guess that's a good reason why it's so hard to find the right manual/schematics.


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 Post subject:
PostPosted: Feb Fri 11, 2011 2:10 am 
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There was a time when Allied Radio and Radio Shack were linked. Maybe the same model was available as a Knight-kit.

Dave


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 Post subject:
PostPosted: Feb Fri 11, 2011 3:38 am 
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Location: Ontario
Hi again,

Can't figure out what happened because it opened fine for me (I was curious to see how it compared to my Xister tester). I did save it and can send you the pdf if I have your email address.

I also found another download of the 22-024 at:

http://pdfcast.org/pdf/micronta-transis ... ter-manual

It's interesting that you have a VTVM with that number because I have run across a couple of instances that talk about the -025 being similar to the -024. I wonder if Micronta have duplicated the model No.s?

There is something else you could do if you think it's worth a try. Do a search on ARF for "THESE BOOKLETS" in the Radio Classified forum which was posted by 'Spivey' back on Nov. Tue. 16, 2010. He was selling some manuals of which one of them was a 22-025. If you give him a shout he still might have them. There was no on-line replies to his posting.

If it is still good, and you decide to go for his offer, I wouldn't mind sharing a copy of the 22-191 with you.

Regards,
Gary.


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 Post subject:
PostPosted: Feb Fri 11, 2011 3:55 am 
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There is where the confusion is.

The VTVM is 20-025.
The Tester is 22-025.

Gary.


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 Post subject:
PostPosted: Feb Fri 11, 2011 4:13 am 
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Gary, check out the link I provided. While the ebay ad lists the VTVM as "20-025", the model number on the pictures look to be "22-025", which is the same number as the later transistor testor.


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 Post subject:
PostPosted: Feb Fri 11, 2011 4:27 am 
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EICOKnight,
Holy Crap! But where did the seller get the 20-025 from?

Gary.


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 Post subject: Re: Micronta VTM schematic
PostPosted: Jun Fri 03, 2011 3:16 pm 
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Location: Inola, OK
Sorry to bump old threads. I just got one of these in, have yet to put it through any tests, but I figured maybe someone would recognize the unit and/or internals as being identical to something else and be able to point to a schematic and/or manual....

Sorry for the quality on some of them, shot them with my phone this morning and didn't realize how out-of-focus they were :roll: ... images open at flickr...

ImageImageImageImageImage

_________________
== @RippC == @K5HRA == http://ripp.net/antique-radio/ ==


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 Post subject: Re: Micronta VTM schematic
PostPosted: Jun Fri 03, 2011 6:12 pm 
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Location: Orrville, Ohio
Ripp,
If you have any luck locating info please let me know. I was never able to locate on my inquiries.

Scott

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Scott


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 Post subject: Re: Micronta VTM schematic
PostPosted: May Thu 16, 2019 12:48 pm 
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Joined: Jan Thu 01, 1970 1:00 am
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Location: Herkimer, NY, USA
The VTVM model is 22-025. The schematic can be downloaded from radiomuseum.org. Here is the link:

https://www.radiomuseum.org/r/micron_va ... _vtvm.html


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