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Hi Craig, I didn't think of this when you first contacted me but the Leo Bodnar Pulse Generator would be an excellent alternative to the Tunnel Diode Pulser. The only thing to take into consideration

where are you located ? wrote:

I am not happy with that use. Say you have 800 volts, you'd need to find a 400 volt supply to "float" the scope, and measure the lower and upper end with the scope probes. While you may not exceed the

Where are you locates i have a spare 7904 with ps out that i started to repair , crt is fine , i am in ny if you are interested.

Sorry 154-0644-05 or 154-0644-09 Thanks

Somebody has a CRT PN 155-0644-05 or 155-0644-09 for a TEK 7904 for sale? Thanks

It has been decades since we impedance matched audio lines in professional audio. When I began in professional audio nearly fifty years ago we impedance matched for 600 Ohms using input and output

I am having trouble donating! I can log in to paypal o/k but when I go via the vintagetek.org link I keep getting the run-around from interminable security tests - It's driving me mad. What do I put

Can access it fine from the UK too.

No problem reaching it here? -- Dave Manuals@... www.ArtekManuals.com

Is the website down at the moment? Cannot access https://vintagetek.org/ at all. Geoff.

Count me in. I've donated $100 because the museum needs to be supported. I'd recommend setting up a fundraising page for Tekscopes too. Rick Bale

This http://ward-beck.com/news/2014/03/07/600-ohms-is-it-neccessary/ might help you understand where the 600 ohms came from. It's unlikely that a consumer grade piece of audio equipment would be able

Donated.? It's useless to have such a resource that is untappable.? I would not mind donating to Tekscopes either.? What was addressed before, too bad there isn't an index or even tags for posts.

Here's the link to post from Sergey Kubushyn<https://groups.yahoo.com/neo/groups/TekScopes/conversations/messages/93463>: https://groups.yahoo.com/neo/groups/TekScopes/conversations/messages/93463

On Sun, May 20, 2018 at 07:27 pm, Craig Cramb wrote: > > Looking for a working condition Tektronix 067-0681-01 Tunnel Diode Pulser for > doing the Cal 6 on a 2400 series scope. I have all other tools

Please put the link here also.

Hi Craig, You can easily build one in just a few hours. The only challenge is obtaining the right tunnel diode (eBay), mounting it (use conductive epoxy), and confirming the rise time is within spec

Looking for a working condition Tektronix 067-0681-01 Tunnel Diode Pulser for doing the Cal 6 on a 2400 series scope. I have all other tools but am missing this tool to complete the full calibration

Got it. I donated $25. Thanks for the pointers and of course, once again, for everyone's help on this forum for the last year. I'm a newcomer to the space and am somewhat overwhelmed by the generosity