I have had many requests from stuff day visitors about junk TM500 plug ins to use to make custom test items, extenders, and so on. I am now out of free TM500 giveaways, and scrap metalwork to make TM5

Just added all kinds of Tek, HP, Boonton, Narda and HP items to the site, as well as lots of unusual semiconductors and parts. Also a beautiful ESI 295 digital capacitance bridge. Drop by over the wee

Colin, I can send you the TM500 frame parts and a rear mating connector PCB free if you can cover the padded bag shipping cost the the UK. email me off list at: walter2 -at- sphere.bc.ca regards, walt

Per requests, I added power meters, couplers and loads to the HP and RF sections, and many other interesting RF widgets. might be something useful there for you. Send me any special requests, we are h

The differences between calibrators and generators are profound. 1. the calibrator is defined in terms of steps that are *exactly the needed intervals for calibration.* 2. values are *peak to peak* on

I have added some time nuts items to the big annual stuff day (now on-line stuff season thanks to covid-19) event at Sphere Research. The good part is now people far away get to snorkel though all the

I do not recommend using WD40 anywhere near the TM500 switches. as I explained earlier, using de-oxit (which is slightly lubricating), and letting it fall right to the front plastic shaft solves ALL s

Over the years, the best method I have found for the TM500 pushbutton switches is to spray a small bit of de-oxit into the rear open end, and let it flood down to the front shaft (very important). hol

I got a few more requests for additional scope calibration items for Tek, so added them today, along with an unusual 4 channel analog/digital Tek 2216. I bet you haven't seen one of THOSE before... I

Lots more hard to find spares uploaded to the stuff season page for you to browse through. Even P6134C 400MHz 11K Tek probes. Complete Vertical and Horizontal 465M plug ins (checked), and a huge pile

In addition to Tek logic analyzer accessories, we uncovered a lot of useful HP repair bits including 8620 and 8690 sweeper scales, 8640B power hybrids, 3400A spares, and some amazing counters, all wen

The on line stuff day event has worked out great, with over 3700 visitors, it's been great to have people far away enjoy the activity there, as opposed to just those that drive up to Sphere. you can v

I finally go that evil shaft out. I sprayed a bit of nu-trol down the shaft edge, to make it as slippery as possible inside the cam assembly. I ground down a small pair of forceps to fit in the tiny g

I accidentally pushed my lab chain into a rack mounted SC503, and sheared off the skirted part of the vertical knob/shaft assembly. after much searching, I did get a replacement from a kind list membe

the (F) suffix for CRTs always indicates a Flat Face. a 5UP1 has a spherical face, but a 5UP1(F) is flat (these tubes only come from Japan, the US makers did not offer this variation). I have never se

jon, we have tons of the real 151-0349 new parts in stock, see here: https://www.sphere.bc.ca/test/tek-parts/tekparts2.html they ship cheaply in a padded envelope. regards, walter

Everything from Tek 321A portables, probes and yes, more Tek knobs made it up today, along with lots of hp and fluke goodies. see it at: https://www.sphere.bc.ca/test/stuffday.html I have some free wo

I think the only really bad part about off-topic posts (off topi in terms of NOT being Tek directly related) is that these threads go on forever with THE WRONG & TOTALLY MISLEADING TITLE. say what you

Reed, for your reference, the CRT (P2) is 154-0563-00 for early numbers, and (P31) 154-0563-05 for s/n over B060000. sadly, I do not have this tube. The Tek CRT Tubes index does not show either tube u

We have just added lots of interesting Tek items to the Stuff Day page here: https://www.sphere.bc.ca/test/stuffday.html hopefully they will make all the Tektronix fans happy, plus I am adding new ite