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Reg, To add to Harvey's excellent response, yes indeed most (all?) 7k plugins will work in any 7k mainframe. HOWEVER, there are at least a couple plugins (I cannot recall which ones right now,

:-DDD Know what you are talkin' about! Chris

Oops! I meant that for Chuck, but thank you, also, for prompting that informative discussion!

Hi Raymond! Wow! Thanks for the thorough explanation. I had been wondering about the so-called capacitor "reforming." Bruce

Very interested in how you find those tapes. If they are OK then programming them might be a challenge? I dug out my 4041 and checked the ROMS- photo of the ROM carrier in my Dropbox

Please see interleaved comments: Tell me about that one. I was allowed to touch them.? It's worse.... Much depends on how many channels you need, (most need 4 or less), what the bandwidth needs to

I recently bought a AM503B amp and A6302 probe from ebay. It has been found that the A6302 probe is bad and will elicit a 588 error from known working AM503B amps. The probe will not degauss.

Hello, I recently purchased a A6302 current probe from eBay and keep getting 588 errors on my AM503B amplifier. I purchased another AM503B amp and A6303 current probe to compare since I couldn’t

Gary, I have ordered 15 NOS 3M DC100A tapes from EBAY. They are scheduled to arrive Sunday. I hope the drive bands are still ok - but I may have to replace them with Plastibands. I will try to

LOL! I like HP's screwdriver with bells and whistles! And yes, that add was something very cheap, unbecoming of HP. Thank you Dennis for the piece of Tektronix history. It keeps raising my

We would like to see working cassette tapes with 4041 functional programs that can boot-up and test the 4041. . -- Gary Robert Bosworth grbosworth@... Tel: 310-317-2247

Please forgive me my ignorance, but for most of my life these things were pure unobtainium for budgetary reasons. And as I was not an EE and not allowed to touch the ones at work, there was no

Hi Errick, The vintageTEK Newsletter may have been referring to me. 6 years ago I designed and tested versions of the individual circuits that were necessary to perform tests for everything that can

Dennis, This is one of the primary reasons that I enjoy this group so much. The history and technical details are priceless! -- Michael Lynch Dardanelle, AR

I guess that should be the 7A19/7A19 Opt 4/7B90/7904 combination Raymond

Thank you *very* much for that information, Chuck! My hearsay knowledge has been replaced with some insight. Raymond

Ouch. That was a low-class piece of work by HP standards. -- john, KE5FX

Thanks for that information, Dennis! BTW, your link didn't work for me but this one did: /g/TekScopes/files/HP183A%20Foxtail%20Ad%20vs%207KSeries.pdf Raymond

Thanks Dennis, I just love this kind of background stuff! This helps us all understand how technology, design, business and marketing intertwine. Great stuff! Keith Coolblueglow Sent from the

In a recent post the 7A29 was recommended as a much better plugin that the 7A19 which apparently has a poor reputation among members of TekScopes. I don't disagree with that assessment. But if you