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Electro-Harmonix/New Sensor open call for requests to revise/add to KT120/150/170 datasheets

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#21
Get Xerox to make a tube making machine. You would just add glass, and raw materials and tubes would come out of the other end!

I'm surprised the Docutech doesn't make its own paper!

Just picture a machine like this making tubes!
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#22
wg_ski said:
Getting another factory up and running is great in principle - if you can staff it. Unfortunately, the main ingredient in any successful manufacturing line is people who know how to do the work - and understand WHY their processes work. I’ve seen the effects of the reverse first hand - when upper management thinks they can just put enough documentation in place and find trained monkeys who just follow orders. The wheels fall off eventually and you end up shipping nothing (And spend a year finding the root cause of a minor issue one of the original retired minds could have found in 15 minutes). If you think getting a factory out is hard, try getting people and see how much resistance you run into. You would need to find experts somewhere else in the world/universe - maybe the guy with the blue face that wanted to get Picard to read his “Paper on thermionic transconductance”. He might know how to make a good KT88, and how to keep the assembly line in spec. I don’t, and neither does a recent PH.D graduate. Maybe some of the original experts from the closed down factory in China - but the military probably got all the good ones, and the rest probably found work in the cell phone industry.

The best hope for New Sensor is for all this to blow over and the world return to some version of normal. Maybe then we’ll even get updated datasheets.
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You have not read my post then , It's not an issue of settig up a NEW factory, it's an issue
of making an aggreement that a existing factory licenses to produce the tubes.

Try to read before posting, that makes more intelligent answers.
 
#23
let's keep it to requests for data on these tube models, and specific requests for what sorts of new models/reissues we'd like to see from them, please. while discussion of manufacturing place, presence/absence of competition, etc does have some bearing on this topic, those are worthy discussions for other threads, and to be quite honest, a lot of that is over my head 😅 i am only seeking concrete requests i can relay to this EHX representative.

thank you very much to everyone who's posted their requests so far! last call, i'll be sending the email in about 2 days.
 
#24
I think the big thing is good plate curves.

I'll second the request for subminiature tubes, as I would like to do more projects with them, but I'm always nervous about designing around out-of-production hardware.

If they're thinking about future power tubes, I'll put in the request for them to be of the type with generous cathode emission. It makes for a more versatile tube and easier output transformer design at the cost of higher filament current, which I consider to be a good trade off.
 
#28
emk2 said:
not sure to understand.

the factory asks for help from customers?
they don't know how to do a datasheet?

or i didn't understand?
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EH is far from being the only company with near-useless datasheets. As an example, I bought some rather expensive x-band microwave detectors that gave the maximum input power and nothing else of use in the datasheet. No sensitivity.

I'm not sure if it's laziness, bad marketing or what, but it's not just tube manufacturers.
 
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