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Wow Jim, Scratch crystal tuning is awesome! Never thought this was something doable. 10 words per minute morse code seems quite impressive (to me at least, but I've never been much into Ham and less

On Tue, Aug 7, 2018 at 08:33 PM, Harvey White wrote: > > On Tue, 07 Aug 2018 17:59:49 -0700, you wrote: > > >I saw a youtube video on how to calibrate an oscilloscope and the person is > using a

at the time those instructions were printed, digital AFG and the like did not exist, so they were not included. However: 1) the PG506 (amongst others) has the appropriate 1/2/5 sequence that the

I have some in the 466 & 475 scopes I have it is a bushing for one of the control shafts in the front panel inserts from the back and held in by the switch or pot. Jim O

Looks like a bushing. Joe

Its hard plastic. I did not see more of them. I am looking at the manual. The part is so small its difficult to distinguish on the exploded view. And I have a genuine tek manual...

Hi Timpthy, I have more questions and suggestions that would help us to help you: 1) Can you put a ruler next to it or provided it's diameter? 2) What does it look like if you flip it upside down? 3)

I have seen those, and I have not worked on that model so it is not peculiar to that model. It might be on page 45 of a 291 page PDF. On the left. the right I think is an actual picture but they are

This fell out when I was working on my 465B. Ive scoured the manual but even if I locate the part it doesnt really show me where it goes. I think there are just 2 of them. Can anyone tell me where it

I saw a youtube video on how to calibrate an oscilloscope and the person is using a 240mhz Arbitrary Function Generator instead of a Calibration Generator and Sine Wave Generator. Im going to be

Fabio no apologies necessary my friend, no worries. My back ground is radio, electronics, in high school back in the tube, super het days, scratch crystal tuning, morse code (10 words min), and a Bell

Thanks. Here's rev. "PE" picture: /g/TekScopes/album?id=66032 The technically-commented revision history should be in the IRB for the '549. Hopefully available in VintageTek's

Hi Jim, If you look at the picture of this same board on the TekWiki website (here: http://w140.com/tekwiki/images/e/e0/Tek_464_internal_4.jpg) , you will see that those vias are also not filled with

HI, I must have suffered from a slow internet connection - I was able to get both documents. THANKS again.

I was able to download both just now. -- Richard Knoppow dickburk@... WB6KBL

Hello, I got the first of these (thanks!) but the second one seem to not be there. Have others been able to download the thing? Roy Morgan k1lky68@... <mailto:k1lky68@...>

ISTR a modification that synthesised the timing signals from the sprocket holes - with the obvious and not very important disadvantage of losing the timing calibration. They are easy enough to bodge

Thanks Sebastian, Interesting, Mine as well as the one Kurt posted back in 2008 have marking "PC" Both have (c) of 1965. Pics here - http://w140.com/tekwiki/images/1/1a/Tek_549_Storage_Board.jpg

Isn't that attached (as a pull) to the tunnel diode or part of the holder? Harvey

The recorder I have seems to have a full roll and I found a UK company that claims to sell it but at a stupid 'go-away' price (~30 bucks a roll!!) with an MOQ of ten rolls, so I'm not really tempted!