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That’s called deflection blanking. The 321 uses that system. Dave Wise Sent: Saturday, April 10, 2021 12:52 PM To: [email protected] Subject: Re: [TekScopes] Looking for a 335 CRT I seem to

Swapped from Tek 485 scope as working when it was. Has socketed NPNs, etc. Free to good home; just reimburse me for shipping from SoCal - 92708. -- William, k6whp "A friend told me to cheer up, things

Hi Harvey, I don't have a [5]CT1N - yet - just a low priority slot on the wish-list. If you have boards left after distributing to everyone with more concrete use for them, please email me your

I've had a few experiences like this, here are just a few that come to mind: 1. I picked up a P6045 active FET probe in non working but otherwise as-new condition. It even had an "Instrument Checked"

When I bought my 465B, I had it shipped to me at work, and, of course, I checked it out there and found it to be perfect. When I brought it home, I discovered noise on the most sensitive setting that

I find myself seeing TEK equipment in some of the strangest places on TV. Now I need to make notes! -- Michael Lynch Dardanelle, AR

The scope in the 3rd photo on that page is a Tek 564B/MOD121N (auto erase.) The fact that there are 5 knobs in the upper right corner give away the auto erase feature. However, this an unusual 564B:

Wasn't that Nikola Tesla's idea of broadcasting power, rather than sending it through cables ? Saw a TV prog on Wardenclyffe, Shoreham NY. I bet if that thing had worked it would have zapped a few

There are horizontal glass rods that support the vertical deflection plates; one of these rods is cracked and the plate is slightly shifted. If there is a blanking plate, it must be connected at the

I’m not sure they are. Also, mine is a European made model. With my limited experience, I noticed that, given the same model, European made ones are, usually, closer to later US made ones. Probably

Maybe... who knows... I highly doubt that. Mine as well. Everything is stock as can be. The only person sho has bee in there was only to take a few compositions out; maybe in a attempt to repair it.

I seem to remember that blanking doesn't work the same way on the 335 as on other Teks. There is a deflection? plate that just repels the beam off to one side for blanking and in dim light with the

For awhile now I have been taking photographs of my TV screen whenever I see a Tektronix ‘scope. One of these days I will put together a photo album and create a page on TekWiki and post them there.

When I worked at Curtis Mathes TV plant in Benton AR in late 1963 early 1964 they had a homemade screen room.? 8 ft on all sides. ?Each section was 2x4 framework covered on both sides with 1/2 inch

Hello Dave I have been skipping over this thread, assuming that it concerned dealing with "ground bounce" on MSI logic chips on a buss. It’s a synchronous logic thing from the days of 54/74 TTL

i noticed this last night. the show is about 3 yrs old so maybe it has already been posted. https://www.pbs.org/video/nova-wonders-whats-the-universe-made-of-2eyoyw/ 30:37 in Peter Fisher's lab at MIT

Dave, I visited Smith-Kettlewell Eye Research Institute in SF around 1974 for some collaborative work.? Google maps shows them about 2.5 miles from the Sutro Tower that is your RF ground noise

Thanks everyone for their inputs. Keep the stories coming. They're great! I was pretty punchy last night and probably wasn't saying what I was trying to very well. I think what was throwing me was the

Back in my early teens we lived on s slight hill and could see the State Police tower red lights on another hill 2-3 miles and could hear them on my homemade crystal radio and they were on 30

Bonjour, sealed reed relays are VERY reliable and the telephone system had lifetimes for 40 years in constant use on 24.48V. But reeds can develop film on the contact surfaces, especially if unused