OC44 prefix 4JB? Where are they made?

Bluesgeetar · March 29, 2004, 09:17:55 PM

Anyone know off hand where the 4JB manufacture code is of? I found a small box of OC44 locally at my little store. Black bullet shape.

Bluesgeetar · March 30, 2004, 01:17:39 AM

Ok after seeing nobody here seems to know. I hit good ol google. Damn near everything I could find associated with 4JB is tied to being the postal code to a certain area of England. It also seemed to be tied to the address postal code of many valve and semiconductor type manufacturers. So I feel pretty safe in determining the 4JB to mean they were made by one of those plants associated with that postal code of England. :wink:

BillyJ · March 30, 2004, 01:39:56 AM

I hear they are still made to this day in jolly ol England.

Ge_Whiz · March 30, 2004, 02:40:38 AM

Sorry BG, nice logic but it doesn't stand up. Firstly, British postcodes are generally of the format letter letter number space number letter letter. The first group of three determines the geographical area - so there are many places all over the UK with the postcode extension ...4JB. Secondly, if they are original devices, they were probably manufactured before we had postcodes, which were only introduced in the late 1960s.

Probably just a batch number.

Bluesgeetar · March 30, 2004, 03:18:12 AM

Well I'll stick with the theory I get from many searches on google. I haven't seen anyone else present a better theory. Batch#? That is weak. Almost all the codes that I have on the many OCs I have click with the list that someone on this forum sent me. So if I went by that the only trannys I have that are part of a "batch" are the 4JB jobs. All the rest jive with a factory on that list. So as far as I'm concerned there is no such thing as a batch#. Once I match my 4JB to somewhere I will have all my OCs matched to a factory. So I feel still safer with the assumption I get from all of the 4JB info from google than just a batch#. Of course if anyone has some better more factual info on 4JB or better theory let me here it. Someone here has the info, they just don't care about this thread.

You guys are great! Live and let live!
Blues

Ge_Whiz · March 30, 2004, 04:13:32 AM

Okay, try this instead - "4JB" just happened to be printed on them at the time that they were salvaged from that spacecraft at Roswell. :lol:

Bluesgeetar · March 30, 2004, 05:27:40 AM

nah that ain't it. The transistors from the spacecraft at Roswell were made by GE. They were 2N somethings.

Paul Perry (Frostwave) · March 30, 2004, 06:26:00 AM

Quote from: BluesgeetarThe transistors from the spacecraft at Roswell were made by GE. They were 2N somethings.

I bet they were UFOC44s!

gez · March 30, 2004, 06:35:24 AM

Quote from: Paul Perry (Frostwave)I bet they were UFOC44s!

One day, when all the Earth's resources have been exhausted, we'll all leave this planet in a giant 'Mother Ship' to go and colonise some far off planet in some distant galaxy.

Of coarse, we'll all have to dress as 'lizard people' to blend in with the locals, and eat their eggs when they're not looking, but I'm sure we can pull it off...

Bluesgeetar · March 30, 2004, 07:19:51 AM

After double checking my notes I saw they were made by G.E.T. semiconductor not G.E.

petemoore · March 30, 2004, 09:01:43 AM

I just don't know about that Roswell theory...why would they use germanuim transistors when they would certainly be exposed to the temperature extremes of space travel, and therefore would be very difficult to keep biased.

Jim Jones · March 30, 2004, 09:08:27 AM

I'd guess date code or batch number. Postal code? You're kidding right?

Jim

Bluesgeetar · March 30, 2004, 09:47:55 AM

Got the answer finally! Well here it is:

4JB
Batch#4
JB is SGS Fairchild, Agrate, Milan, Italy

Need more info to ease your mind!?
I just bought 15 OC44 with 4JB on them from a radio repair guy in cesano mederno, Italy( I'm not sure how to spell the name of that town). Well I think that sign seals and delivers that answer.

Thanks for all yur guys help anyway.

Ge_Whiz · March 30, 2004, 12:05:14 PM

QuoteBatch#? That is weak.

So, not so weak, then? As opposed to, say, 1000 miles out on the postcode theory? (Sorry I can't be more gracious)

QuoteI just don't know about that Roswell theory...why would they use germanuim transistors when they would certainly be exposed to the temperature extremes of space travel, and therefore would be very difficult to keep biased.

Oh, man - the aliens only brought them so that their guitars would sound good! Where d'ya think Leo Fender got the idea for the Strat from? His imagination? :lol:

Bluesgeetar · March 30, 2004, 11:15:42 PM

Yeah whatever! Crow tastes pretty good to me anyway.

Ge_Whiz · March 31, 2004, 02:39:14 AM

Hey man, pass me some of that crow! And go easy on the sour grapes! :lol:

saros141 · March 31, 2004, 09:49:05 PM

Hey, speaking of crow... have you ever watched 'em fly? It ain't straight at all :lol:

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OC44 prefix 4JB? Where are they made?