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Thanks a lot, Pete and Kurt! Raymond

Great reference and a very nice scan. Thanks! Bob.

This scan was made possible by Pete Lancashire. https://drive.google.com/open?id=18HOBLNtGVaAzzbbuIl2YLvUas8GLpIz4

Hi Miguel, What modifications did you make to the charger circuit to adjust it for the different charging requirements (current limits, voltage cutoff point, etc) of Li batteries compared to NiCd

Not in normal use, no. Unfortunately, there's a lot of them where someone just took the probes anyway, they do plug in, but it's internal. Ask me how I found this out... Harvey

Scope probes are not detachable for any 211, 212, 213, or 214 scope. Dennis Tillman W7PF

Hi again Now I have done quite a few measurements with my 7L13. I just used a know frequency source to tune it into the frequency I am searching for and then I do the measurement. This works well

This scan was made possible by Pete Lancashire. https://drive.google.com/open?id=10de6jO2yXNFdVNGAd9MlDKnPdpYoLPI4

hi, Spotted on eBay: Tek 545 with tubes for parts... $100 located in: Crimora, Virginia,

Indeed and almost too easy to fix! It turned out that the coaxial wire going to the ext Z-axis BNC had come adrift. Re-soldered and now z-modulation is functioning, but still no bright-up on "A INTEN"

Just try a Helicoil first, I just fixed some stripped bakelite knobs from a 1920's radio using 4BA Helicoils - worked great! Adrian

Epoxy resin mixed with enough ground silica to make a stiff paste then rammed into the hole Robin

plastic is fairly soft compared to metal, normal thread is 70%, you can use a smaller tap hole to approach 95% thread, use a good sharp tap. plastic threads will hold better and longer with more

He is wanting to replace stripped inserts in knobs, seems like a great application for easily tap-able jb weld. No concern about viscosity in that application. I'm not sure Micromark's bismuth/tin

Hello John, I'm glad you made progress in so little time. On the tekwiki website, down there is a reference material section and a Tektronix semiconductor design catalog. Link is here:

An alternate approach would be to hand machine delrin rod on a drill press.

Warming the JB Weld will decrease the viscosity. I used to pot solid state modules for the side-winder AIM_9H using Hysol epoxy, it was done in a vacum chamber, no voids or bubbles allowed. wrote:

It's a multipage TIFF -- most system previewers (Windows, OS X) can page through it. Sorry, I should have warned about that :-) --Toby elsewhere and will study that.

Micromark has some low-temp casting materials <= 160 degrees F. (Metal) R.

Is the knob large enough to use a 6-32 set screw? If so make sure you use a correct numbered drill with the tap. 73, Blll, WA2DVU Cape Mah