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 Post subject: Accurate Instruments 156 Genometer Help Needed
PostPosted: Jul Thu 12, 2018 6:00 am 
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Joined: Mar Thu 29, 2018 3:41 am
Posts: 77
Location: Portland Oregon
I'm getting into the radio restoration hobby and would like to focus on pre WW2 radios. My current project is restoring an Accurate Instruments 156 Genometer. I have successfully restored and calibrated an Eico 667 Tube tester and an Eico 249 VTVM. I also have fixed up a General Radio metered variac and wired up an isolation transformer.

I need help finding the schematics and/or manual for the Accurate Instruments 156 Genometer. I looked a long time on the web for this information and cannot find it anywhere. Does someone have a copy of the schematic/manual in their collection? I would really like to restore this instrument. I can replace the out of spec caps and resistors (assuming that the right parts were installed by the last guy who was in the cabinet) but I would like to confirm the bill of material and schematic. Of course, I would really like some more information on how to use the tool and how to calibrate it.

Please let me know if you have a schematic and/or manual for the 156 Genometer.

Thanks so much for your help!

Dave


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 Post subject: Re: Accurate Instruments 156 Genometer Help Needed
PostPosted: Jul Thu 12, 2018 8:19 am 
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Location: Sayreville, NJ 08872
At one point Accurate Instruments and Superior Instruments were intertwined. Superior, under their label, had a TV-50/50A Geometer. Maybe they're one and the same, or pretty close.

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 Post subject: Re: Accurate Instruments 156 Genometer Help Needed
PostPosted: Jul Thu 12, 2018 5:22 pm 
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Joined: Jan Thu 01, 1970 1:00 am
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Location: Mpls, Minnesota
As stated the Superior TV-50 should be the same.
http://bama.edebris.com/manuals/superior/

Dave


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 Post subject: Re: Accurate Instruments 156 Genometer Help Needed
PostPosted: Jul Fri 13, 2018 7:01 am 
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Joined: Mar Thu 29, 2018 3:41 am
Posts: 77
Location: Portland Oregon
I don't know what the heck is going on with the 156. I don't know if it has been modified or ???. The tubes are different from the both the TV50 and TB50a. The component values are very different. I have to make the schematic on my instrument, but it looks to be significantly different from the TV50 and TV50a on the BAMA site.

I'll let you know post more later this weekend. It will take a couple of hours to figure this out.

Dave


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 Post subject: Re: Accurate Instruments 156 Genometer Help Needed
PostPosted: Jul Sat 14, 2018 3:49 am 
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Joined: Sep Sat 27, 2014 10:43 pm
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Location: Spanaway, Wa.
Hello All,
I have a TV-50 and I don't have a lot of good things to say about it.
Poor build quality tons of surplus parts that don't match the schematic, I never did get the RF section to work but the audio output does but isn't very stable. I don't presently work on TVs so I don't know if the markers and bars work .
I finally gave up because I couldn't figure out the schematic. I may make a transmitter out of it there is a write up on the Web on how to do it, but then again I would have to get the RF working! OH well round and round the mulberry bush I guess :roll:
Anyway good luck with your genometer I wound up buying a couple clough brengle sig gens repaired them and they are great. Don't give up this is supposed to be fun.
Les.

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 Post subject: Re: Accurate Instruments 156 Genometer Help Needed
PostPosted: Jul Thu 19, 2018 4:59 pm 
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The Accurate made for Lafayette also
If can find one I have the book for Lafayette

Dave


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 Post subject: Re: Accurate Instruments 156 Genometer Help Needed
PostPosted: Jul Sun 22, 2018 6:15 am 
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Joined: Mar Thu 29, 2018 3:41 am
Posts: 77
Location: Portland Oregon
Howdy Smithdoor.

I looked for a Lafayette Genometer and compared it to mine. See the attached picture.

I think they are exactly the same!

Can you make a copy of the manual or the schematic and calibration instructions? This would be a great thing to put on on the BAMA site. I have read where many people want the Accurate Instruments Genometer 156 schematics. I couldn't find the schematic for either instrument on the web and I've looked quite a bit.

Thanks so much !

Dave


Attachments:
comparison AccInst and Lafayette small.jpg
comparison AccInst and Lafayette small.jpg [ 99.23 KiB | Viewed 458 times ]
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 Post subject: Re: Accurate Instruments 156 Genometer Help Needed
PostPosted: Jul Sun 22, 2018 6:10 pm 
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Joined: Feb Mon 20, 2017 7:21 pm
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I have the book in a pdf file and I try sending a email but did not work
Dave

TechyMechy wrote:
Howdy Smithdoor.

I looked for a Lafayette Genometer and compared it to mine. See the attached picture.

I think they are exactly the same!

Can you make a copy of the manual or the schematic and calibration instructions? This would be a great thing to put on on the BAMA site. I have read where many people want the Accurate Instruments Genometer 156 schematics. I couldn't find the schematic for either instrument on the web and I've looked quite a bit.

Thanks so much !

Dave


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 Post subject: Re: Accurate Instruments 156 Genometer Help Needed
PostPosted: Jul Sun 22, 2018 7:05 pm 
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The 156 book has bend email to BAMA site.

Dave


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 Post subject: Re: Accurate Instruments 156 Genometer Help Needed
PostPosted: Jul Mon 23, 2018 12:16 pm 
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Joined: Mar Sun 20, 2011 2:53 pm
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Location: Spain - 28110 - Algete
pls, can you send me to correo@candiles.org ?


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 Post subject: Re: Accurate Instruments 156 Genometer Help Needed
PostPosted: Jul Mon 23, 2018 4:28 pm 
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I email to you also include add and other make

Dave

ariston wrote:
pls, can you send me to correo@candiles.org ?


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 Post subject: Re: Accurate Instruments 156 Genometer Help Needed
PostPosted: Jul Mon 23, 2018 7:37 pm 
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Joined: Mar Sun 20, 2011 2:53 pm
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Location: Spain - 28110 - Algete
:lol: received. Thanks


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 Post subject: Re: Accurate Instruments 156 Genometer Help Needed
PostPosted: Jul Tue 24, 2018 2:49 pm 
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Joined: Mar Thu 29, 2018 3:41 am
Posts: 77
Location: Portland Oregon
Hi Dave (Smith Door);

I sent you an email with my email address. Did you receive it? I’ll send you a personal message too. I really appreciate you sharing your information!

Dave P.


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 Post subject: Re: Accurate Instruments 156 Genometer Help Needed
PostPosted: Jul Tue 24, 2018 3:42 pm 
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For any planning on Tv's the 156 Genometer works great simple to use too.
The Genometer wort great on radio too

I purchase mind new in the late 60's
I used for working on Tv's
It was low cost signal generator for working on Tv's in 1960's

Dave


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 Post subject: Re: Accurate Instruments 156 Genometer Help Needed
PostPosted: Jul Thu 26, 2018 7:18 pm 
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You may want to try
http://theradioboard.com/rb/viewtopic.p ... 627#p75405
My log in not working today

Dave


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 Post subject: Re: Accurate Instruments 156 Genometer Help Needed
PostPosted: Jul Thu 26, 2018 8:24 pm 
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Joined: Mar Thu 29, 2018 3:41 am
Posts: 77
Location: Portland Oregon
Hi Dave,

I saw that article too. The guy is trying to make the Genometer a radio.

I'm going to follow his path and make up my own schematics and try to figure out what is going on. I haven't used SPICE before but found some free online calculators. I might try to trace out all of the circuits and model them and try to hook up the scope to see what is going on.

Dave


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 Post subject: Re: Accurate Instruments 156 Genometer Help Needed
PostPosted: Jul Sat 28, 2018 11:45 pm 
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Joined: Feb Mon 20, 2017 7:21 pm
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Take look at the title box
Drawn by the person
It looks like TV50A may same as the 156
Does any know if change there name around 1962

Dave


Attachments:
Sp.jpg
Sp.jpg [ 145.17 KiB | Viewed 311 times ]
PSX_20180728_160439.jpg
PSX_20180728_160439.jpg [ 177.38 KiB | Viewed 311 times ]
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 Post subject: Re: Accurate Instruments 156 Genometer Help Needed
PostPosted: Jul Sun 29, 2018 5:24 am 
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Joined: Nov Sat 07, 2009 11:37 pm
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Location: Sayreville, NJ 08872
Quote:
Take look at the title box
Drawn by the person
It looks like TV50A may same as the 156
Does any know if change there name around 1962

Dave


Did you read the second post in this thread?

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Pete, WA2CWA - "A cluttered desk is a sign of genius"
http://www.classicradiomanuals.com


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 Post subject: Re: Accurate Instruments 156 Genometer Help Needed
PostPosted: Jul Sun 29, 2018 2:34 pm 
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Yes I did read your post
To me they just change the name
Even the manuals. are most the same
It looks like TV50A front was change on 156 to cut cost

Dave


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 Post subject: Re: Accurate Instruments 156 Genometer Help Needed
PostPosted: Aug Tue 14, 2018 6:32 pm 
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Joined: Feb Mon 20, 2017 7:21 pm
Posts: 157
Here is one for TV50
(Not TV50-A)


Attachments:
TV50.gif
TV50.gif [ 45.29 KiB | Viewed 174 times ]
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