Hello all: Just finished the TEK 130 LC meter restore, cal check, remove bad tape debris and fix mains plug. But it has no handle , the blue TEK color, with metal end caps, screw spacing is 4" Anyone

I bought a dead 465 for $20 in hopes of getting it running and teaching myself about scope repair at the same time. After removing the cover, closely looking at everything I could see, and finding no

The discussion of the 130 LC meter got me thinking about the more contemporary Tek TX1 multimeter. I have a 130 and TX1, they both work great. The TX1 capacitance measurement has wide range capability

Peter Keller asked me to pass along the addendum to his book to everyone who purchased it. "The Cathode Ray Tube, Technology, History, and Applications" by Peter Keller This book contains many referen

PayPal is causing problems for a few members who have ordered Peter Keller's book and are trying to pay for it using PayPal. This comment I found in a PayPal Q&A web page from someone who could not fi

Hi All, Just wanted to introduce myself. I'm Gordon Smith, a technology enthusiast down here in San Diego, CA. Was recently given a Tek 502 Dual Beam Oscope and in researching it found your group. A T

The following files have been uploaded to the Files area of the TekScopes@groups.io group. /Addendum to The Cathode Ray Tube, Technology, History, and Applications by Peter Keller .docx By: Dennis Til

Is there anyone familiar with this unit? I have one that isn't working and have traced the problem to the variable oscillator not oscillating. It's plate voltage is too low but everything seems good o

https://www.govinfo.gov/content/pkg/GOVPUB-C13-d406f7b323789d061394ae6f2f1de44c/pdf/GOVPUB-C13-d406f7b323789d061394ae6f2f1de44c.pdf https://w140.com/tekwiki/wiki/Sampling_diodes

Please DO NOT email me if you find your name on either the domestic or International list for Peter Keller's book UNLESS there is an error or you have paid me and you cannot find you payment. I do not

Initially, I thought there might be enough interest in Peter Keller's book that 10 members might want it. I was off by a little: This morning I mailed Peter Keller our payment for 106 books!!!! 27 boo

Initially, I thought there might be enough interest in Peter Keller's book that 10 members might want it. I was off by a little: This morning I mailed Peter Keller our payment for 106 books!!!! These

Hi all, I have a question. I have written before about the scopes that I have. I have a TDS684A, which is my best one. The issue that it has is this. I bought it from a surplus place, and it had been

Been at this scope on and off for sometime. Learned a lot about Tek scopes and the 465M in particular. Initially, no trace, no +5V, no 95V. Currently have all three and the unit seems to function norm

Hi all. I have a 212 portable scope here I was restoring, and it seems the contact cleaner I used wasn't compatible with the pots and stripped the carbon traces clean out of them.... Needless to say,

I've been cleaning up and organizing lots of stuff lately, and I found I had a couple dozen various AC light dimmers and fan controls piled up. After I eliminated the obvious junkers - marked bad, tak

I got one of these included free with some other new parts, so it can be yours for free if you need it. this is the large PCB mounting ferrite power transformer used in the 455 and 465M. happy to pass

measuring turns ratios, while not trivial, is easily accomplished with some interactions, but assigning the impedance remains troublesome. I have several bits of test gear that can measure impedance (

thanks for all the comments on this topic so far. keep in mind, my issue is simply that I have unknown transformers and want to know what they are. by definition, unknown means I don't really know muc

Hi John, I tried contacting you via email directly but I have received no reply. You indicated you wanted a copy of Peter Keller's CRT book but I have no record of a payment from you. If you have chan