Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => AmpTools/Tech Tips => Topic started by: tcoil on August 11, 2011, 04:21:32 pm
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Hi fella's. I stumbled on to a Gold mine so to speak. I have a friend (Matt) that called me and said "I have a guy I work with that has some stuff you might be interested in. He wants to sell it". I Said "what kind of stuff?" He wasn't sure but assured me I would be interested. Being the electrical novice that I am I drove about an hour and met Matt at the sellers house. First he shows me 3 radio cabinets from the 30's and 40's a little banged not bad for 70 yrs old. Then He pulls out all this stuff, boxes and boxes of test equipment (mostly heath kits from early to mid 70's). 2 ossicilliscopes, Hi-voltage supplies, a Box of pots mostly military grade, resistors, buttons, knobs, switches just all kind of stuff. By now I was drooling, "How much?" I asked?.He goes "How much you got"? I got $200 cash, I said. He said "can you fit it all in your van". I have a rec van with a bed in the back so I wasn't sure if I could, but I said I could anyway. So I loaded up the van and it was tight but I got it all in there. I couldn't wait to get home and got through all the cool vintage stuff I got. As I was about to leave he says "Oh yea hold on I forgot something. We went back into the garage and he pulls out a box of vintage tubes, mostly new in box 12ax7,au7,at7, 6l6, 6v6, 5y3,5ur4, el84, 7025, 6550, Mullard, RCA, Raytheon, Amperex. including s bunch of jan tubes. I had to pinch myself to make sure I wasn't dreaming. Here is a pic of some of the stuff. Being a novice I have no clue how or if I need any of this stuff to build and repair tube amps. So far I have been ok with a volt meter and the ocassional help from the forum. Does anybody have any advise or knowledge regarding these three items. from left to right -Heathkit's electronic switcher io-22, capacitor checker it-28 and signal tracer it-12. I have 5 of the signal tracers.2 work 3 do not.
Thanks
Tcoil
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The signal tracer and cap-checker have OBVIOUS use in gitar-amp tinkering.
> 2 work 3 do not
Should be easy to repair. If you don't need five sig-traces, I bet others here would give them a good home.
> "electronic switcher io-22"
uh, Electronic Switch ID-22, right?
It adds dual-trace function to a single-trace oscilloscope.
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Cool, Your right it is the id-22. I'll keep the cap checker and signal tracer. Cool stuff for my lab. No clue how to use the cap checker..have to find a book. I also have an impedence bridge (IB-28). again no clue. I have 2 cap checkers. I don't think I'll need the switch. I'll put one of them up on the for sale board. Maybe someone is interested.
I can see how the tracer is going to make diagnosing repairs a little easier.
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Sounds like you duplicated the "garage of doom" deal I did with an older fella about 12 blocks from me. The scope switch is....ehhh, kind of a source for 12AU7s.
I ultimately had to haul 8 Ford Explorer-loads worth of crap to achieve the result of emptying the garage of doom. I had to take lots of World War 2 vintage radios which I had little interest in. A day or two before I was going to haul them to the ewaste thingy, I had the idea of trying to find a radio museum, and I found the mother lode radio museum, http://radioblvd.com/ (http://radioblvd.com/) Turned out I had 4 or 5 of his top ten things and I traded them for a nice Gm Hickok 6000 tube tester and a nice hp power supply. He probably got the better end of the deal. but he also drove down from Reno Nevada to Lafayette, CA which saved me a lot of work. I gave him tons of parts which would never have been useful for me. He actually wrote up our deal as "the big trade" http://radioblvd.com/art13.htm (http://radioblvd.com/art13.htm) (about 4 pages down) and got ALL of the radios I traded him working! Which truly amazed me because some were in quite rough shape. I was very happy to see the radio stuff go to someone who appreciated it.
I ended up selling lots of tubes and radios on ebay. I got maybe 2 dozen 6L6s out of the deal, unfortunately they were forties vintage "GA"s and "G"s and not all that much useful audio stuff. But I quintupled what I paid for the garage and it ended up well. Lucky it was only about 12 blocks away from my home.
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tcoil , I have the same heatkit capacitor tester , the IT 28 . It is a great tester and very useful . I built it in '70. I have the user book and I can scan it and send to your e-mail adress
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Lot of good vintage parts in the switch I might gut it and use the case for another project.
Wow, that would be so cool to have a manual for the checker. My email is Myopicvoid@comcast.net. I'll look forward to getting the manual. thanks
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Heath IT-28 schematic available here....probably not the whole manual
http://www.vintage-radio.info/heathkit/ (http://www.vintage-radio.info/heathkit/)
GREAT site for old Heath stuff.
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LOL this is too wierd!
This morning I just picked up a Heathkit IT12 works great eye is bright and a Mullard 12AX& that tests 75% good on my Eico 666
A knight 620 VTVM
Eico 147 signal tracer
2 different RCA VTVM's one is high voltage and has a probe in a original box that looks new
Knight kg-650 RF signal generator
and what looks like 2 or 3 unassembled heathkit kits (Hybrid phone line patch?) (VTVM ef-1?)
And a box of old probes with old style microphone plugs
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Christmas in July
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tcoil ,sorry I did not receive your answer from the forum. Maybe one of my set up is not check for receiving e-mail ? I 'll scacnthe book tomorrow and I'll send to you.
About the answer from eleventeen , this is only the shematic of the IT-28
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tcoil , look at that , a good information about heatkit capacitor testers.
I'll send you scan soon
http://www.angelfire.com/electronic/funwithtubes/Restore_cap.html (http://www.angelfire.com/electronic/funwithtubes/Restore_cap.html)
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ticoil I just send you an e-mail but your adress doesn't work; What is wrong ?
Adresse du destinataire : Myopicvoid@comcast.net
Raison : Server rejected MAIL FROM address.
Code de diagnostic : smtp;552 5.2.3 message size exceeds fixed maximum message size
Système distant : dns;mx1.comcast.net (TCP|10.23.32.72|38272|76.96.62.116|25) (imta05.westchester.pa.mail.comcast.net comcast ESMTP server ready)
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message size exceeds fixed maximum message size
Maybe your attachment exceeded a file size limit. Try sending a simple text only message before sending an attachment. If that works, then decrease the file size of your attachment.
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Thank Sluckey I'll try it late afternoon
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I should do a newer scan. This one a PDF and an can't separate it
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What's the file size? I use comcast.net and don't have trouble with huge attachments. I clean up my mail regularly though.
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The file was 21.2 Meg. Very big.
But now I just send one page / one e-mail = 14 e-mail . Ticoil should have it.
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Strattele, I got all the pages, thanks. When I send big files I got to yousendit.com.
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I too have gotten into vintage test equipment. Needs rebuilds & distracts from amp building, but still a great experience. I now have 4 Heathkit VTVM's monitoring plate & screen voltages while DVM's monitor bias, etc. Some old meters need a friendly tap once in a while to read correctly. Must be a '50's thing in homage to the Fonz! :wink:
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Tank's for the adress of yousendit.com. But I never send big file often to pay for that.
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You can get a FREE account at MediaFire
http://www.mediafire.com/ (http://www.mediafire.com/)
there you can upload also big files and share the link for the download :smiley:
Kagliostro
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Thank's Kagliostro
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Found more box's. Heathkit ig 72 audio generator, a Capacitor sub box w/400v caps, resistor sub box w 1/2 watt carbon comp rsistors, 2 more signal tracers, an osciliscope (not working) (turns on but no line on crt), heathkit impedence bridge, 3 more vom's, tv alignment generator. And last but not least a tv degaussing tool. Whew! And there is anothers box or two. If anybody's interested in some of this stuff, drop a reply. I'm going to be putting stuff up on ebay. I'm tcoil on ebay same as here.