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I should mention one other thing.? To make the inboard power supplies more possible, and to remove heat from the module, TEK put in a general purpose PNP power transistor and a general purpose NPN

I'm also very interested, but pulling the trigger does depend on the approximate price. Dave S.

Larry With the greatest respect, you're putting the cart before the horse. You have ten committed purchasers, and I am sure many more like me who are waiting to see the price. So why not get a price

Thank you very much, Harvey, for that great historical summary! ¡ª Happy New Year Tom Sent from my iThing, so please forgive typos and brevity.

Ok, perhaps I can clear up a bit of this. Remember that in the 70's to 90's (roughly) there were no (to speak of) FPGA IC's so digital design was lots of 14, 16, 20, and maybe 40 pin chips, depending

I have one of the originals, and it is almost certainly "Tek" built as opposed to built from the plans. For one thing, it has a Tek serial number label and silkscreened front panel. Dave Casey

I believe the notch filter could be built in any form factor. IIRC it does not use power from the mainframe, so there's no reason it has to be in a TM-style enclosure. Dave Casey

TM500 - Ok, it fits a very large set of modules. Why? Are there modules that do things that can only be done using a particular module? Yes, I could read the specs for dozens and dozens of the

Good thing! :DLOL!? ?Happy New Year, everyone!? ? ?JimSent from my Verizon, Samsung Galaxy smartphone

We had a 1000-foot spool. Thankfully, the label specified that it was a single cable with no breaks. RG-59 I think. I do not recall what the prop delay was, but it was sort of measurable. I recall we

hi Miguel, really interesting, but first I have to recover the 52.5 MHz crystal to convert the TR503 to TR502. Among other things, the TR503 does not have the logic interface (the one connected to the

I have the original power cord for my 513D, and it is a 2 pin round bodied "extension" cord, of a type that was popular in the late 1940's. The instruction manual clearly indicated that you must

Note that Jared has updated the main PWB Gerber file and the Instruction Manual file; if you downloaded those earlier, you need to get the new files. Jared and I are discussing how best to order these

Steve I in 2014 did a paper for SMPTE, Belden contributed 100m reels of cables to the project, both TP and coax of 18 different types. We ran digital audio signals with rate to 24.576 MHz and looked

Of course! After a few drinks and too much to eat, at 1:30 AM while being a one finger typist, with the computer accepting anything I type, viper sounds like wiper anyway! I am glad I did not type

https://www.ebay.fr/itm/Vintage-Tektronix-TM503-Power-Module-bestuckt-TR503-DC503-A-k6/133434061050?hash=item1f114a30fa:g:yygAAOSwHoFe368E I paid 500€ for mine without counter -----Mensaje

I happen to have the board Layouts for 475 and 475A and after a cursory look, they appear to be almost identical. They are, as someone else noted, completely different from the 465, but they do

No but it will sound fantastic, especially when you use oxygen free Tektronix Gold Plated Probes... Harvey

I think the best compromise might be the 3 pole midget twistlock from Hubbell, as it will give me a grounded connection, and the modification will be the lest conspicuous: slightly enlarging round

When I came across this problem (and after an unsuccessful search for my genuine ancient line cord), I took one of those rubbery 3-prong-to-2 prong adapters and, with a sharp knife, cut off the female