RE: Avionics and amazing gear made by Tatjana (was Re: Data General Nova Star Trek Rockwell Collins vs. Vaisala SPT11A)

> European tubes are easy to evaluate in that respect because the letter codes > designate what's inside. I remember the EABC80 (not sure that's the correct EABC80 _is_ the correct number. It is a triple diode triode. The number decodes as follows : E : 6.3V heater A : diode B : double

Re: Avionics and amazing gear made by Tatjana (was Re: Data General Nova Star Trek Rockwell Collins vs. Vaisala SPT11A)

> On Apr 27, 2016, at 12:49 AM, Jon Elson wrote: > > On 04/26/2016 09:47 PM, William Donzelli wrote: >>> What was the highest level of integration in a single envelope? >> Perhaps Selectrons. >> >> > There were also "Compactrons", 12-pin tubes kind of extending the 7-

Re: Avionics and amazing gear made by Tatjana (was Re: Data General Nova Star Trek Rockwell Collins vs. Vaisala SPT11A)

On 04/26/2016 09:49 PM, Jon Elson wrote: > There were also "Compactrons", 12-pin tubes kind of extending the 7- > and 9-pin submini tubes. Some of them had at least 3 elements in one > envelope. I remember them and used them. In particular, I remember an AF amplifier with push-pull beam output

Re: Avionics and amazing gear made by Tatjana (was Re: Data General Nova Star Trek Rockwell Collins vs. Vaisala SPT11A)

On 04/26/2016 07:47 PM, William Donzelli wrote: >> What was the highest level of integration in a single envelope? > > Perhaps Selectrons. EBAM?

Re: Avionics and amazing gear made by Tatjana (was Re: Data General Nova Star Trek Rockwell Collins vs. Vaisala SPT11A)

There were a few others, as well as some RF devices with the tuned parts inside the bulb. There were also some oddball types made for weather balloon use that had the whole transmitter circuit as one unit. -- Will On Apr 26, 2016 6:30 PM, "Chuck Guzis" wrote: On 04/26/2016

Re: Avionics and amazing gear made by Tatjana (was Re: Data General Nova Star Trek Rockwell Collins vs. Vaisala SPT11A)

On 04/26/2016 12:40 PM, Paul Koning wrote: > This sort of stuff doesn't seem to be all that common; I haven't seen > it elsewhere. Multiple tubes, like dual triodes or triode/heptodes > are pretty common, but those are just the active part. The only "passive in the tube" examples I can think of

Re: Avionics and amazing gear made by Tatjana (was Re: Data General Nova Star Trek Rockwell Collins vs. Vaisala SPT11A)

> On Apr 26, 2016, at 3:07 PM, Chuck Guzis wrote: > > On 04/26/2016 10:49 AM, Paul Koning wrote: > >> That tube is interesting: it's the world's first integrated circuit. >> Yes, a hollow state integrated circuit. I describe it that way >> because it is a complete subsystem

Re: Avionics and amazing gear made by Tatjana (was Re: Data General Nova Star Trek Rockwell Collins vs. Vaisala SPT11A)

On 04/26/2016 10:49 AM, Paul Koning wrote: > That tube is interesting: it's the world's first integrated circuit. > Yes, a hollow state integrated circuit. I describe it that way > because it is a complete subsystem (in this case, a complete 3 stage > audio amplifier) rather than just something

Re: Avionics and amazing gear made by Tatjana (was Re: Data General Nova Star Trek Rockwell Collins vs. Vaisala SPT11A)

> On Apr 26, 2016, at 1:34 PM, Swift Griggs wrote: > ... > Just about everything on that page is drool-worthy or cool in some extreme > way. That crytograph does indeed rock and "The Inertial Navigator Platform" > looks like an artifact from The 5th Element. What's more

Avionics and amazing gear made by Tatjana (was Re: Data General Nova Star Trek Rockwell Collins vs. Vaisala SPT11A)

On Tue, 26 Apr 2016, Paul Koning wrote: > From the looks of other items on her website, that collection of airplane > gear is the *least* strange thing she has. Holy smokes I just checked and you are right! > Stuff like an encryption machine that isn't exactly an Enigma, but based > on the