https://washingtondc.craigslist.org/doc/ele/d/crofton-vintage-tektronix-535a-scope/7264086289.html Thomas Garson Aural Technology, Ashland, OR By my calculation, the dynamic range of the universe is r

Peter Keller asked me to pass this along to the group. I'm sure he was smiling the entire time he wrote it. Dennis Tillman W7pF I guess it is time for the real story of the Coketron to be exposed. The

greetings to all, I have the schematic of the option 7 board for the DC508A, but I think it can also be adapted for the DC502, the problem is that I don't know what are the changes to be made to the D

I have a interesting issue with a 577 D1 storage CRT where random portions of the trace will flash brightly at random times on the screen. I tried turning the brightness to minimum where the trace dis

Hello all: My workhorse 7A26 needed rework, in 7804 mainframe. Cleaned the AC/DC/GR contacts on attn with the iso alcohol-paper strips, and exercised some scratchy controls. Poor fast transient respon

I need to make some space on my bench, and for measurements as high as this will go, I usually move to a spectrum analyzer anyway. 4 channels, 1 GHz, color display. GPIB and floppy work; I didn't test

What is the type of this capacitor, and what are its appropriate replacement types? Picture of C1534: https://groups.io/g/TekScopes/photo/258720/0?p=Created,,,20,2,0,0 Manual calls for: FXD,ELCTLT: 3U

https://sacramento.craigslist.org/zip/d/rio-linda-two-1950s-oscilloscopes-for/7261128129.html About 45 min from where I live, just north of Sacramento, California USA

I have recently acquired a well optioned 2465 DMS in good condition (except for some exterior damage and degradation that was easily repaired) but I am having trouble finding an operators manual that

No relation to seller https://sacramento.craigslist.org/ele/d/vacaville-tektronix-535a-oscilloscope/7262163827.html Not bad with scopemobile etc. About an hour east of San Francisco also 5113 https://

Hi Folks - I'm seeing an intermittent intensity modulation at line frequency on my 564, and have been unable to measure the source. I've tried both a 3B3 timebase, and a 3A72 in the horizontal slot wi

Found this on Craigslist https://corvallis.craigslist.org/ele/d/corvallis-large-lot-of-tektronix-test/7261764719.html

Previously you might have noticed I have an issue with the 577 curve tracer where the IV curve has an offset problem, click the link below to see a picture that demonstrates the problem https://groups

Hi guys, im looking for a missing knob of the trace positioning (see pic below) https://i.gyazo.com/8e018f12acdef8d57bc2c949135d350f.jpg The original part number is 366-1027-00, unfortunately i cant f

Due to a freak accident, the shaft of the Variable Holdoff potentiometer broke and I need to replace it. The details are: R9521 311-2146-00 Res, Var, Nonwir: 50 ohm, 20% 0.5W CM41773 It is a Clairstat

Dennis – I hope you don’t consider this off topic. It is not on repairing a classic Tek scope – but an aspect on how they were made. After reading the posting from the Peter Keller on the Coketron, it

I believe the following report from the Hampden County MA 22NEWS explains why these 6 Peter Keller books are being held in the main USPS Seattle Network Distribution Center. Tracking #: 95490163359410

Hi All, I peruse the Auction site HiBid for items of interest to me (note: Hibid is a "consolidation" website that helps auction places all across the country have one centralized web location). I als

Hi, On my 2465, the Ch1 BNC is slightly "loose", and the signal is intermittent depending on which way the probe cable/connector tugs on it. The connector seems to be integral to the A10 attenuator as

Is there any source for the slip-on "grabbers" for the P6105 probe. These are Tek P/N 013-0107-0. I seem to have lost one. This will teach me not to keep a trash bucket under the scope on the scope-mo