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Hi David, Are you referring to this ebay item, the seller is "Hollywood Controls" in Arizona: https://www.ebay.fr/itm/155741314023 In the description, it mentions a derived design from "AMC184" on

Good catch! Even without those terms, for the value of IP in any of our small projects it isn't worth pursuing a copyright claim.? If you have a product which is important then you begin reading the

Many of us, myself included, would say the same thing, Dale. Jim Ford Laguna Hills, California, USA "And we know that God causes all things to work together for the good of those who love God and

Anything sent to China is likely to be copied if someone there sees a way to make money from it.

In their small print here https://www.pcbway.com/privacy_policy.html 1.Intellectual property rights and publicity (a)By providing data to PCBWay, You grant PCBWay an irrevocable, non-exclusive,

Yeah, I just posted another photo of the actual PCB design they took. First picture 10MHz standard was my last revision to board. I just finished a revision that uses SMD components and was searching

This post does not apply to any of my Tektronix equipment, But I thought you guys should know about this. In December of 2017 I designed a 10 MHz standard for my 5316A HP Counter. I had the PCB made

Hello All, I decided to revise this thread for a reason I will get into shortly. But to start, I recently purchased a 2230 on eBay. I bought it knowing it was non-working. I thought it would make

fmashockie@... added the photo album Tek 2230 Isolated Kernel Timing Revised ( /g/TekScopes/album?id=291820 )

Curious! I thought I'd better check mine out and I found C32 marked as "100-25DC" (which is as expected according to the manual), but C30 is marked "10-100DC" which seems somewhat odd! It also has

And some people wonder why I like my '70s-'80's instruments. The reason why is simple - I can repair and calibrate them. -- Dale H. Cook, GR/HP/Tek Collector, Roanoke/Lynchburg,

a lot of the weird issues that I have seen over the years in various models of Tektronix scopes from 2000 up to 2015 or so that had no other explanation have ended up being due to RAM chips (or bad

Yea I thought easy things the front panel going dead. Checked all the supplies on the main board, all perfect, no change in voltages, no change in the very low noise on the rails. I monitored the

I had one I used for quite a while with no problems.? I wonder if something like capacitor issues?

So I have lots of anaog Tek stuff. Highly refurbished and upgraded 7904s and I think most every plug in. I have most all of the TM500/5000 stuff I will ever need. Mostly this stuff worked right away

It’s one thing to find a list of mods but surfacing the Telex that lit the fire to process the mod is pure style! Well done, Zenith!

Or, "good save!"

Siggi - Thank you for providing a more detailed response to Frankie than I did. The point I quoted above is a rule that anyone needs to understand before undertaking a calibration. I have known it

There are ways to get the scope *mostly* calibrated.? Some of the TM500 functions can be duplicated, with some success. A decent crystal oscillator, feeding an FPGA, or a series of decimal counters

Try ArtekManuals: http://artekmanuals.com/manuals/tektronix-manuals/ He is known for high quality scans. Peter