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Bruce, IIRC, a 3.5 inch floppy holds 1.44 MB.? So, yeah, 1.5 MB plus a bit more would probably push it over the edge.? ? ? ? ? ? ?Jim Ford?Sent from my T-Mobile 4G LTE Device

Thank you Bob. I am fortunate in that my 130, unlike about all my other Tek gear, is very clean. Possibly came out of a clean room, who knows. No evidence of tobacco tar or even much dust. Will also

After replacing the CRT with an apparently new part (the anode lead was unbent and had no soot on it, and was strapped to the neck with a latched rubber belt) I now have absolutely no traces on the

On my 130, the variable oscillator won't oscillate. On Thursday, February 17, 2022, 05:08:34 PM PST, Tom Lee <tomlee@...> wrote: Hi Dave, The docs at VintageTek are great. The

Dave, Stephen and Albert, My unit is serial 90XX (forgot already), and as was noted, has a 6DJ8 for V70, although the chassis panel lists the 6BQ7 as well. Not sure if I am going to the dungeon

To follow up on my previous message, I just noticed that when I copied the V3.41 files from my computer to a memory stick, for carrying to my old laptop in the shop, each file was swelled by 20 to 30

Hi Dave, The docs at VintageTek are great. The gentleman who wrote the three-part article did a remarkable job of documenting his restoration of his 130. He even restored the manual (he did more than

Jean-Paul, Given my state of electronics expertise, ALL notes help, and I read them closely. Thank you. Dave

Kerry and Tom, thank you both for the link to the Tek Museum's video on the 130, will try to watch it tonight. Have poked around the Museum's website, but haven't availed my self of all the

Thank you Tom, will take a closer look at the resistors in that circuit, and will then report back. Dave (yeah, go by Dave, never much cared for Jerome)

Hi, I want to change my Tek 2715 75 ohms input to 50 ohms. From what I read in the service manual, its just the input connector that has a 25 ohms resistor, internals of the 2715 is all 50 ohms. Has

In preparing to update the firmware on my TDS3052 scope to V3.41, I downloaded the file from the Tektronix website and began transferring it to four 3-1/2-inch disks as instructed. The first two

Thanks Harvey for your reply. Yes, the 468 does not support remote operation. However it does support a remote WF request from the GPIB controller. Replacing the CPU with a more modern

Some things to consider on this scope: 1) it is send only, IIRC, and was never designed for remote operation. 2) you set it up with the front panel controls, I don't think that any of the scope

Hi, David. I'm mostly interested in the DIGITAL internals of the 468: how does the 8085 CPU accomplish its tasks. Making the GPIB work is part of that. As I mentioned, John (Twilight-Logic) created

No big deal, I just wanted to ensure the archive doesn’t mislead the next guy. Once the OP has the multivibrator sorted out, there’s a home-grown calibration technique that doesn’t require the

You're right. Sorry for the confusion. Stephen Menasian

Printed on chassis of S/N 8069: "V76 6DJ8/6922 6BQ7A". Albert

My manual scan covers serial numbers from the beginning to at least 10760. During that time, the 130 used a 6BH6 for V110, Guard Voltage Cathode Follower. It was always a 6BH6 and nothing else was

Well, mine is actually a very old one... I bought it decades ago. Its much quiter because it doesn't run on nominal speed, the supply in the TM506 or TM5006 giving only 110V to the fan. The