I have a hazy recollection the 2246(5) continued a company wide move towards off the shelf components rather than rely on unique components, whether made inside Tek or custom built by an outside vendo

I recharged mercury hearing aid batteries for my landlord's Mom when I was in technical school in 1966/7. Was able to eke out a little more life, not like new, but saved her some money. Joe Rooney

I have one, although I occasionally use it, I would part with it. I bought it off the spares list in the mid 70's and it has performed flawlessly except for the dirty switch syndrome from not being us

Email me at ikerooney at yahoo dot com if anything interests you favorite this post Tektronix Parts Sale Probes TM503 - $250 (santa cruz) hide this posting unhide http://sfbay.craigslist.org/scz/ele/5

CR1468(2?), I think, was the stressed bridge and the 152-0488-00 was replaced with 152-0568(2?)-00 or something like that. Crush the original rectified so you may individually remove the leads and the

Don't overlook the 546 as a possibility as it used the same CRT. The risetime graticule was changed, I can't remember if 5 major divisions was the old on or if it was 6 major divisions with respective

I have observed these and other tunnel diodes in that particular package seem to require more and more voltage to reach the tunneling point until ultimately, they open up. I suspect the connections to

Tim, I'm so happy you have cooked up replacements for these feet. I am in the market for two sets. I can't email you directly because yahoo groups and windows 10 don't co-exist well. You can email me

In your photograph where the anode multiplier is connected to the cathode rectifier and the transformer, you can "disconnect" the multiplier by unsoldering it physically from the ourput. BUT! The tran

I recall seeing the BNC connector contributing to a problem you are describing. There would be a shift between GND and DC Coupling. (There shouldn't be) It also seemed to change over time. I theorize

The 109 also only worked upright or laying on its side, upside down or laying on the opposite side would generate symptoms you describe. There is an arrow diagram on the front panel. It was aggravatin

Can you associate it with advancing the collector supply variac? Maybe a different collector supply range? What is scary is that the transformer driven by the variac can fail. I think I replaced maybe

Chasing down a gain change warmup problem, I decided to replace the 5642's in the anode with replacements I found on line. Pictures here: https://flic.kr/p/EV6GoL https://flic.kr/p/EV6GoL https://flic

If you can, swap delay line leads at one end to see if the problem inverts. A loose CRT lead can cause that symptom bu you would have seen it tapping things. If it is an internal connection (to the CR

At this late of a date, it is probably not worth it. If you wish, contact me at ikerooney(at)yahoo.com and I can supply a bit more information.