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VideoTech
VideoTech, Technician
Category: Consumer Electronics
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Experience:  30 years servicing Video Electronics
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I need the manual 22-0278 multitester sold by Radio Schack.

Customer Question

I need the manual for Micronta 22-0278 multitester sold by Radio Schack. I am unable to locate it on the web. Can you find it?
Submitted: 1 year ago.
Category: Consumer Electronics
Expert:  Jack replied 1 year ago.

Sorry , posted here by mistake , will repost your question

Expert:  Michael replied 1 year ago.

Hi, how old is your RS meter?

Also are you sure of the model #?

Thanks

Tech Mike

Customer: replied 1 year ago.
This is the catalog number. that Radio Shack has on the box. I do not know how old it is
Expert:  Michael replied 1 year ago.

Hi let me do some research as it seems quite old lol.

I should be able to locate that one for you but it may take me a day or so for that as the site for these old Radio Shack meters is a bit slow to respond.

In any case, I will stick with you until this is complete.

Please rate my service thus far.

Also it is the only way I am credited for my time and expertise with you.

Once you rate, I will be notified and will add your question to my priority list so you can reach me anytime until this problem is solved.

Then you can reach me by simply replying to this message anytime.

Thank you and have a great day!

Tech Michael

Customer: replied 1 year ago.
I appreciate your needing more time. I think it better to rate the interaction once we have closure on it.
Expert:  Martin replied 1 year ago.

Are you sure the last 8 is not an A, also, a picture of the meter could help me to identify it.

Expert:  Martin replied 1 year ago.

I can also help you in knowing how to operate it, those are never complicated for me being an electrical engineer.

Expert:  VideoTech replied 1 year ago.

Here's some INSIGHT about that meter -- FIRST that looks like the mirror image of the Simpson 270 that I used back in the early 80's, and it wouldn't surprise me if Radio Shack just had Simpson stick their sticker on it to sell it in their store.

http://www.mitchellinstrument.com/simpson-270-5rt-extra-high-accuracy-vom.html?gclid=CLnDzra6z8sCFZKCaQodOIcE4Q

Compare it to your unit here -

http://www.ebay.com/itm/Vintage-Micronta-No-22-208A-Analog-FET-VOM-Multimeter-NR-/111935548062?hash=item1a0fe0ea9e:g:SFwAAOSwZ8ZW5hDf

Looking at the info, I'd start looking for SIMPSON 270 information instead of Radio Shack Information. Simpson built it.

Mouser has the schematic of the 270 at the top of the page. Comes with the instruction manual on page 2 --

https://www.google.com/search?sourceid=navclient&aq=&oq=simpson+270+diagram&ie=UTF-8&rlz=1T4WQIB_enUS547US548&q=simpson+270+diagram&gs_l=hp...0i22i30.0.0.0.17224...........0.3QuzgR0S9Os

Your micronta had to be built by Simpson.

Expert:  VideoTech replied 1 year ago.

Darn, you were READING it before I finished it.

Let's see if I can finish it.

Here's some INSIGHT about that meter -- FIRST that looks like the mirror image of the Simpson 270 that I used back in the early 80's, and it wouldn't surprise me if Radio Shack just had Simpson stick their sticker on it to sell it in their store.

http://www.mitchellinstrument.com/simpson-270-5rt-extra-high-accuracy-vom.html?gclid=CLnDzra6z8sCFZKCaQodOIcE4Q

Compare it to your unit here -

http://www.ebay.com/itm/Vintage-Micronta-No-22-208A-Analog-FET-VOM-Multimeter-NR-/111935548062?hash=item1a0fe0ea9e:g:SFwAAOSwZ8ZW5hDf

Looking at the info, I'd start looking for SIMPSON 270 information instead of Radio Shack Information. Simpson built it.

Mouser has the schematic of the 270 at the top of the page. Comes with the instruction manual on page 2 --

https://www.google.com/search?sourceid=navclient&aq=&oq=simpson+270+diagram&ie=UTF-8&rlz=1T4WQIB_enUS547US548&q=simpson+270+diagram&gs_l=hp...0i22i30.0.0.0.17224...........0.3QuzgR0S9Os

Your micronta had to be built by Simpson.

Customer: replied 1 year ago.
Thank you very much for the information. Let me read/look at the web site you suggest. That will at least help me convey more clearly what the gadget is. If that does not do the trick, I will send you a photo of the tester
Expert:  VideoTech replied 1 year ago.

I hate not having hyper text hyper texted....

https://www.google.com/search?sourceid=navclient&aq=&oq=simpson+270+diagram&ie=UTF-8&rlz=1T4WQIB_enUS547US548&q=simpson+270+diagram&gs_l=hp...0i22i30.0.0.0.17224...........0.3QuzgR0S9Os

I'm sure the 270 is your voltmeter. It's just TOO familiar to me. Hey, after 30 years and knowing it the moment I saw it, you don't have that many moments in your lifetime.