On 7/13/2015 2:16 PM, Andy Tefft wrote:
The magic eye tube was in a "Recordio" -- probably a 6B40B based on the date codes on the tubes - that originally looked much like this one: http://78records.cdbpdx.com/RECORDIO/WGRC/ but had been in a damp basement with a frequently-wet floor for who-knows-how-many years (at least 20 but probably closer to 40). The top half wasn't too bad but the bottom half was all de-laminating. The chassis of the electronics part was pretty rusty. I have a feeling it didn't work when it was moved down there -- the power cord was half-severed and most people would have fixed that if it was otherwise working. Other than a heavy layer of dust, the tubes look in pretty good shape since their pins were protected by their sockets. I haven't cleaned the dust off since I don't want to accidentally remove markings. If I had had time to do a little research on it I might have tried to save more of it. Especially if I had noticed the magic eye before it was too late. The little window for it was so cloudy I had no clue it was anything significant.My father-in-law had a tube tester but I haven't found a power cord that fits it. I have no idea how to use it but there's a book with it, so maybe I'll be able to at least light it up.On Mon, Jul 13, 2015 at 3:57 PM, Charles MacDonald <[email protected] <mailto:[email protected]>> wrote:On 15-07-13 08:48 AM, Andy Tefft wrote: This is slightly off-topic but I knew some of you would have knowledge and interest :-) I rescued some tubes from a couple of old (40's and 50's) radios that were getting the crowbar treatment (although I started to, that story is too sad to recount). One of them surprised me by having a magic eye tube, which I've never seen in person, which is what prompted me to pull out all the tubes I could. Wish I'd had time to salvage sockets as well. The 6E5 is a very popular tube, although as has already been said they often get dim with age. This data sheet has some information and sample circuits. Basically the tube acts like a smallvoltmeter with very low effect on the voltage it is indicating. Besides radio tuning you will often find them in Capacitor testers.http://frank.pocnet.net/sheets/021/6/6E5.pdf and a slightly different sheet http://frank.pocnet.net/sheets/049/6/6E5.pdf and this older one which going into a bit more detail http://frank.pocnet.net/sheets/201/6/6E5.pdf What I do know is that I'd rather have them get used than end up in a dumpster. Is there any value at all in salvaged tubes? I think the magic eye is a 6e5 type (I don't have them with me and haven't made a list yet). Anyone seen a decent kit I can plug this into that will just do "something"? Hard to tell as the 6E5 was used in a LOT of different radio designs, so the rest of the tubes can be many different types for a 30 year technology span. all we can say for sure is you could probably build a radio. (or a audio amp using the two or three tubes from the speaker driving part.) Too bad about the radios. Any that would have a eye tube were probably higher end units and worth considering restoring, unless waterlogged or similar.-- Charles MacDonald Stittsville Ontario[email protected] <mailto:[email protected]> Just Beyond the Fringe No Microsoft Products were used in sending this e-mail.-- You received this message because you are subscribed to the GoogleGroups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected] <mailto:neonixie-l%[email protected]>. To post to this group, send an email to [email protected] <mailto:[email protected]>. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/55A41829.1030009%40zeusprune.ca. For more options, visit https://groups.google.com/d/optout. --You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected] <mailto:[email protected]>. To post to this group, send email to [email protected] <mailto:[email protected]>. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/CAM1F4kReS-oYCF5hbtArJE5ZF_0FTFtrVKs5NsaFCPuG4SERUA%40mail.gmail.com <https://groups.google.com/d/msgid/neonixie-l/CAM1F4kReS-oYCF5hbtArJE5ZF_0FTFtrVKs5NsaFCPuG4SERUA%40mail.gmail.com?utm_medium=email&utm_source=footer>.For more options, visit https://groups.google.com/d/optout.
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