As a kid, my folks with grad students. I remember playing text adventures on a mainframe via a teletype over the weekends. I must have burned through a few trees with all the paper I wasted. It took years to realize what a rare experience that was.
As a programmer who started his career in 1985 on IBM 4381 (with PROFS), Honeywell H-6000, Sperry System 11, and VAX PDP-11 systems, all these sounds are music to my ears!!!!! I wish computing still had this hardcore hardware sound to it.
+Emailic Courrierl Fax can't ring a bell. So, e.g., when Nasser died in 1970 and the news came across the UPI machine (made by Teletype) the bell rang five times to indicate to the news readers in radio stations that something very important had just happened.
In early 70s as a kid, I used to play with one of these hooked up to a Western Electric ESS-1A telephone switcher (off line of course). The ESS-1A replaced a crossbar tandem that looked exactly like that one starting at 7:42. I still have a few of the old ESS-1 aluminum memory cards in a box somewhere. That was one crazy wild computer. Very advanced for its day but an oddball non the less. I heard it was modeled after a Nike Hercules ground control computer that WECO developed for USAF.
These mechanix are amazing! Like line printers, it always fascinated me how they always hit the right letter at the right time in the right position...
Whats also ironic is that as pilot, I use my smart phone or tablet to get vital aeronautical information that is still encoded in an ITA2 format. This thing-judging by the lower case letters and extra symbols-is at least ASCII which is 40 years newer.
I'm old enough to remember IRC, but this is an order of magnitude more cool. And owning and operating a complete telephone exchange building to do this is multiple order of magnitude even more cool.
I use to fix these...went to Shepard Air Force Base for 5 weeks of school. These things are mechanical nightmares! Both linefeed and spacing clutches were 6 stop instead of 3. 12 Clutches, with 3 for vertical positioning on the left sife and 3 for horizontal in the front plate... 150 Baud, 300WPM... RM2342/2346
+Joe Chmelik I used to fix these too. Keesler AFB for 8 weeks. There were four clutches in the front plate. The type box was 16 by 6 characters so you would need four clutches to reach all 16 characters horizontal (2 to the 4th). The three clutches on the side (8 rows) were to reach two rows of upper case, two rows of lower case and two rows of figures and special characters. 2 to the 3rd would be 8 rows but two rows of those ascii characters were non-printing. The selector clutch had two stops so that the machine could print two characters per revolution of the mainshaft. Models 28 and 35 only printed one character per revolution. What it did mechanically could have been done more reliably electronically even in the mid '70s when I was trained on it. Still, the workmanship and the documentation were superb. But it was obsolete when it got to the field.
Well, I just considered it a mechanical monster! Even the Model 28's I show to guest that tour the USS Midway Museum, are stunned by the complexity of the printer.. I would tell them it was nothing compared to the Model 37! Tks for the reply!
+Joe Chmelik So You probably can explain, what is placed in the "Relay room"? Is it just a automatic telephone relay station or it is something specific to teletype?
+mmx358 Relays are in the relay room which would be a Faraday box. Relays are electrically noisy so they have to be in a room with metal walls. The Teletype's "raw" input and output is current--a current loop. If its data is coming from an RF receiver then the output of that receiver CW--Continuous Wave is an input to "keyer" which keys a relay that opens and closes the current loop. The start bit is a space--no current--the selector magnet trips the selector clutch which causes the selector clutch cam followers to parallelize the character to the typebox positioning hardware. It's been awhile. In cases where the data source (the keyer) is close to the data sink (the teleprinter) the loop from sink to source will not require relays. The stock tickers in NYC were current loop from the exchanges to all customers south of Chambers Street. It is a small area.
Wow, I’ve never operated a printer with that speed. Used to the old model 15, 19 machines. 😊 I used to operate RTTY with Navy Operators in the Pacific from my home in Massachusetts. We exchanged a lot of ASCII art, especially at Christmas. My Dad really got a kick out of it, especially when they’d send a bunch of line feeds and there would be paper everywhere.
I remember in the 1980's when we "upgraded" our landline-switch printers from this technology to the "advanced" Terminet series. Interesting evolution, from a jumping rectangular device full of fonts, to a spinning belt like a flying picket fence, with a row of hammers to hit the right character as the fonts flew past that line position. First machine was 300 baud, next came the 1200. Short lived, as a sticky hammer would not retract fast enough, so tore off the next font in the picket fence! Had to clean the hammer mechanism, then, like a dentist, pull the font out of the belt and replace. Then came the relatively simple dot matrix printers, that would print every second line backwards, to save time returning the head to leftmost position.
Remember that sending an e-mail is akin to sending a telegram. Using a teletype just sped up the process. The pre-curser to e-mail. This is what gave us the phrase 'just came across the wire'. Teletype was used in offices, newsrooms, radio stations and places like the Pentagon.
I seriously just had a nerdgasm. I had never heard of a Teletype computer until now when I was watching an interview with Bill Gates. I don't know why this thing is so amazing to me but holy crap it triggers some sort of primal computer nerd nerve. I love it!
I'm kind of amazed it's like a session was opened to a Unix based server and it's actually being printed on paper.. rather than to a traditional terminal. It's surprisingly quick though - although I'd be upset if someone started spamming things.
+Daniel Collins Don't forget that when UNIX was written, Teletypes were still used as a method of I/O! You can still do it today with Linux, as long as you have an ASCII capable Teletype lying around.
+museumofcomm When Unix was written both Bell Labs and the Teletype Corporation were part of AT&T so a Teletype terminal would have been the default for the programmers at Bell Labs. Further, when Unix was written Teletype was the traditional terminal. They were truly ubiquitous, including both sides of the Iron Curtain, and any large network for the simple reason that Teletype had repair people all over the place. It was a big company In the early seventies I actually worked on a system that was architected with the Teletype and the CRTs reversed--that is they used a mechanical Teletype as a console and CRTs as I/O devices. The significance of this is that when the system crashed the Teletype had to be operational to bring it back up. There was no such thing as a headless boot at that time.
I worked at Teletype on Touhy Ave in R and D (Research and Development) in Skokie Illinois on the model 37 in the early 70's. In fact I had I ended up with two brand new ones in my basement. Pitched them out (got them legally) cause they were taking up space. What a dumbbell. The fact is the model 37 was obsolete before it got into production. 150 baud is about 15 characters per second. General Electric had a competing printer (The Terminette) that had a print band. Could cruise along at 1200 baud.
I live in Belo Horizonte, Minas Gerais in Brazil. I work with IT for many years. I'm surprised with this machine. I've never seen a CHAT this way...... KkKKKKkk... Very COOL....
This really takes me back - I was trained on a Model 40 in the early 1990s for my Army Signals unit - the Mighty Mighty 712 (call sign RCESZEA). I remember the embarrassment of that "ding!" sound it would make if you transmitted a message with improper formatting.
I live in Poland. My first modem is CommCall1200 (1200baud) in 1990, in 1990 is about 20 BBS in Warsaw.. My next modems: 2400, 9600, 28.000 and 56k. Now I waiting (few days) for fibre 300Mbit :)
My grandpa lives in Poland too and he had test-graphical teletype and PC (286 with Windows 1.0 then 2.0) in 1986. Yes, he had 68k computer too. And 9.6k landline and packet radio and he used 286 mainly for professional purposes (radios).
You can. Just get a terminal unit that has a loop interface and tie it to a mechanical teletype e.g. HAL ST-6000. In my area in the 1970's a group of locals did all sorts of artwork over 6M RTTY. I still send ASCII art over 2M packet, but I don't use mechanical teletype, it's strictly screen.
Pretty cool. Would've been cooler if one of the two systems involved did line wrapping for the tty. I don't suppose a simple stty cols 86 would've done it?
Thanks for giving a view at a good angle of how the print head works (at least, the end product part of it -- still would like to see how the electromechanical decoding system works like what CuriousMarc showed for the Teletype Model 33).
Color could be selected from the remote end by transmittting control characters. I believe the characters used were SO (0x0E) and SI (0x0F), but I don't have a manual in front of me, so I could well be mistaken.
Every time I see a video about an old machine like this, whether it be a teletype machine, a typewriter, a Linotype machine, an orchestrion, or anything like that, I think the same thing. My house is by no means a small house, but it's certainly not big enough to amass a collection of things like this. Not to mention the difficulty of finding such things and being able to afford them.
@@user-74652 Typewriters are fairly easy to find, but teletype machines seem to be just about impossible. Well, unless you're willing to pay hundreds of dollars on eBay and a fortune to ship it. I did just get really lucky though. Today, I bought a "telegraph perforator" made by a company called Kleinschmidt. I haven't been able to find out much about it, but it seems to be kind of like an early teletype. You type on a keyboard and it punches the characters on tape in Morse code. It's in pretty rough condition and needs a lot of work, but I think I'll be able to restore it.
A better System Administrator would of kept the login welcome message and news and prompts as austere and terse as possible... if he know teletypes were connecting to it...
It's quite interesting how the chat session is talking about solid state technology and how computers can no longer be called machines because of their lack of mechanical parts, and the session is being printed on an actual physical machine that is as far away from solid state as possible.
The Model 37 was different from the 35 but not so different that it was not obsolete when it came out. The Model 35 is basically a 28 with the characters in different places in the typebox and an extra surface on the selector clutch that only affects the stunt/function box. The M37 had 13 clutches vs. the 6 in a Model 28 or 35. Seven of the clutches were to position the typebox. Four clutches in the front plate positioned the type box left and right: The typebox was 16 characters across so that is 2 to the fourth power---four clutches. On the right there were three clutches that moved the type box up and down. The type box had 96 positions but an ASCII set has 128 characters and functions. The typebox has only six rows because the functions are non printing. So assume eight rows two to the third power with two rows not used (control characters bits 6 and 7 are spacing). The positioning clutches had two possible stop positions to correspond with a mark or a space. Also the selector clutch had two stops and would print two characters per revolution. The clutch had a least 9 cam followers so that if the printer ran 24 seven as ours did the clutch and the mainshaft would wear much faster than that of a 28 or 37. They keyboard was of course mechanical and designed like other Teletype keyboards so that you could only depress one key at a time. If it was not stepped by crypto or whatever to a lower baud rate it was the smoothest keyboard that I could ever experienced. In that one part it was a step up.
I forgot another important difference. Models 28 and 35 used clutch shoes 150043 and 150044 while the Model 37 used (from memory) 330006 and 330007. The pairs seemed to work interchangeably, however.
Vernon Nelson, you can. Go to the Living Computer Museum's website, and there's a page where you can request an account so you can telnet into one of their historic computers (via your computer's telnet program, not this, obviously)
The print head moving up certainly slows it down a bunch, I wonder why they didn't put red on the top half of the tape instead, as it doesn't seem to be used nearly as much. Seems a bit inconvenient, no?
If the black was on the bottom and red on top, you couldn't see what you were typing, because the ribbon would obscure it. Also, once the type box moves up into typing position, it stays there as long as typing is continuous. It only moves down to its rest position if there is a break in typing, so the lag ends up not being long enough to notice.
Joseph Wonderless When you were cutting a tape, you could always backspace over a mistake, and then type a LTRS character over it. LTRS had the advantage of being "all holes punched", and was not a printing character, so the read mechanism would just advance past it on to the next character.
I used an ASR-33 for a few years back in the 70s to communicate with a PDP-10 running TOPS-10. After about 8 hours of Conversational Fortran the 33 would just slow down and stop. Got one of those? -- Dick S.
Feel like they should still make use of this technology and make text only printers for places that have to print a lot of text documents like schools, an ink ribbon would cost a hell of a lot less then toner or ink cartridges.
Think about that for a minute. You're talking words per minute vs tens of PAGES per minute. There's a good reason places that print a lot of text only started printing a lot of text once faster devices like laser printers came out.
The Airlines still use text only printers. And what you see on the PC running Windows is a non-windows application in a Window---a terminal emulator. The reservation applications were originally written in the early '50's. Within the terminal emulator window you must use arrow keys to position the cursor.
@@ConnectionsMuseum I believe it was 150. In use on a network the network would determine the speed. The operators that called me to fix these would complain that they were too slow. I had to explain that the stepping came from the computer. If the computer technician would up the baud rate from the computer then I could up the baud rate of the Model 37. There were jumpers in the "logic basket" under the printer. The units we had had two printing units and they printed at different baud rates.
@@richardhaas39 MAX 150, rare although U.C. Berkley could do it regularly. Some of the Marine HF stations has a upper 90's limit (and no error correction of course) that was weird. Normally 110 or below (wire and origin station dependant) - Manual said 110 I seem to recall. Line tuning UGH. Best and worst of times.
Not a computer, but a teletype. You can however connect it to the computer and use as a terminal, but it is still a teletype with no processing power. Its like calling mouse a computer.... Or even worse as modern computer mice may have complicated ICs inside like microcontrollers or so... This teletype has no such things...
@@macieksoft Teletype machines can also save messages onto punched tape, right? And then that punched tape can be reloaded into a teletype machine and reprinted? So in a way, it's kind of working like a computer since it can store and retrieve data, even if it's only text. It converts bits from the tape back into printed text.
ct92404 Not really. Teletypes cannot be programmed. They also can't co any maths or logical operations. That way you could say that walkman is computer because it stores sound onto tape and then can replay it....
@@macieksoft like a player piano, which was inspiration for punch tape. So if you think Player Pianos (which predated bletchy park but not babbage ) were computers then let the good times roll. I agree with Macieksoft here @ct6502
For reference, this isn't a 34. It's a 37. This particular model was the top-of-the-line ASCII machine at the time, but it came out just as CRTs were beginning to become popular as terminals, so it didn't sell as well as the old baudot machines did. :)
I just got 2 Teletype 43s from my grandparents house. My grandfater worked for C&P Telephone before it became Bell Atlantic, and then Verizon. I also got a telephone dialer, and some central office test equipment. The teletypes seem to work in local / talk mode, and have the built in modems (phone line in / out instead of RS-232 card). The ribbon is dried up, but I've heard they can easily be re-inked. It is wet enough to see the letters print lightly. I'm not sure how to rest the data portion, but I'm sure I could figure it out with a little more research. Does anyone happen to know what these units are currently selling for? I can't find a model 43 on Ebay, Amazon, FB Marketplace, or Google anywhere! Just trying to get a current value! Any help would be appreciated. I currently do central office work, and am located in the Baltimore area. Thanks!
This is the most iconic movie sound ever. I don't care what it is. It could be a 100 XBox GPU parallel AI network, mining bitcoin. In a movie, THIS would be the background sound they use. I haven't checked, but I'd bet PIXAR put this sound in WALL-E somewhere.
I have a daisy wheel typewriter that I have working with an arduino that I use on output bus of the 8 bit computer I made. I should try converting it to work like a TTY, I do have an RS232 port on there so it shouldnt be too hard
It's a little bit of an inconvenience, though. The print head wastes so much time moving up to hit the black letters, it makes you wonder why red wasn't put on top, or the head raised to accommodate the red being on the bottom. It does look and sound really cool, though.
If I had one of these print boxes, I'd connect it up to an SMS gateway, so my friends could text message it via a phone number, and I could type on it to send them a text message back. You would really burn through the fanfold paper, but it'd be cool to hear it go off when you got a text message out of the blue....
CHOPPERGIRL AIRWAR Quite difficult to do that. You could place a call, but do to the way data is transmitted and received you'd likely just get garbage on your terminal from the other end.
As a kid, my folks with grad students. I remember playing text adventures on a mainframe via a teletype over the weekends. I must have burned through a few trees with all the paper I wasted. It took years to realize what a rare experience that was.
holy shit
That's so cool!
The beauty of the M37 was its unique aggregate motion mechanism, not seen here.
As a programmer who started his career in 1985 on IBM 4381 (with PROFS), Honeywell H-6000, Sperry System 11, and VAX PDP-11 systems, all these sounds are music to my ears!!!!! I wish computing still had this hardcore hardware sound to it.
I like teletype more than fax. Sound makes it exciting.
+Emailic Courrierl Fax can't ring a bell. So, e.g., when Nasser died in 1970 and the news came across the UPI machine (made by Teletype) the bell rang five times to indicate to the news readers in radio stations that something very important had just happened.
Richard Haas cl
This is what a newsroom was like.
You haven’t heard a “real” fax with the spiral stainless blade rubbing against the wet chemical paper?
In early 70s as a kid, I used to play with one of these hooked up to a Western Electric ESS-1A telephone switcher (off line of course). The ESS-1A replaced a crossbar tandem that looked exactly like that one starting at 7:42. I still have a few of the old ESS-1 aluminum memory cards in a box somewhere. That was one crazy wild computer. Very advanced for its day but an oddball non the less. I heard it was modeled after a Nike Hercules ground control computer that WECO developed for USAF.
These mechanix are amazing! Like line printers, it always fascinated me how they always hit the right letter at the right time in the right position...
Even printed in red text too!
Oh the irony, people discussing Macbooks and CDs via an ancient electromechanic teletype.
Whats also ironic is that as pilot, I use my smart phone or tablet to get vital aeronautical information that is still encoded in an ITA2 format. This thing-judging by the lower case letters and extra symbols-is at least ASCII which is 40 years newer.
morsecode in the background saying "hi hello" after minute 4 - when the teletyper shuts up for a minute
It's amazing to see these things in action.
This is so noticeably faster than the 110 baud teletypes I used to used. And it makes a completely different sound too.
But it's still wonderful :)
Yes, these ran at 150 baud - 15 char/sec, 50% faster than Model 33 and 35. And they had a 96-character typebox, so they could do upper/lower case.
Yeah, amazing speed compared to my KSR35!
I'm old enough to remember IRC, but this is an order of magnitude more cool.
And owning and operating a complete telephone exchange building to do this is multiple order of magnitude even more cool.
Look at that print head move. "This is your typewriter. This is your typewriter on 150 cups of coffee."
I use to fix these...went to Shepard Air Force Base for 5 weeks of school. These things are mechanical nightmares! Both linefeed and spacing clutches were 6 stop instead of 3. 12 Clutches, with 3 for vertical positioning on the left sife and 3 for horizontal in the front plate...
150 Baud, 300WPM...
RM2342/2346
+Joe Chmelik I used to fix these too. Keesler AFB for 8 weeks. There were four clutches in the front plate. The type box was 16 by 6 characters so you would need four clutches to reach all 16 characters horizontal (2 to the 4th). The three clutches on the side (8 rows) were to reach two rows of upper case, two rows of lower case and two rows of figures and special characters. 2 to the 3rd would be 8 rows but two rows of those ascii characters were non-printing. The selector clutch had two stops so that the machine could print two characters per revolution of the mainshaft. Models 28 and 35 only printed one character per revolution.
What it did mechanically could have been done more reliably electronically even in the mid '70s when I was trained on it. Still, the workmanship and the documentation were superb. But it was obsolete when it got to the field.
Well, I just considered it a mechanical monster! Even the Model 28's I show to guest that tour the USS Midway Museum, are stunned by the complexity of the printer.. I would tell them it was nothing compared to the Model 37!
Tks for the reply!
+Joe Chmelik So You probably can explain, what is placed in the "Relay room"? Is it just a automatic telephone relay station or it is something specific to teletype?
+mmx358 not sure what your refering to in "Relay". The only relay room I knew was in London UK.
+mmx358 Relays are in the relay room which would be a Faraday box. Relays are electrically noisy so they have to be in a room with metal walls. The Teletype's "raw" input and output is current--a current loop. If its data is coming from an RF receiver then the output of that receiver CW--Continuous Wave is an input to "keyer" which keys a relay that opens and closes the current loop. The start bit is a space--no current--the selector magnet trips the selector clutch which causes the selector clutch cam followers to parallelize the character to the typebox positioning hardware. It's been awhile. In cases where the data source (the keyer) is close to the data sink (the teleprinter) the loop from sink to source will not require relays. The stock tickers in NYC were current loop from the exchanges to all customers south of Chambers Street. It is a small area.
Wow, I’ve never operated a printer with that speed. Used to the old model 15, 19 machines. 😊
I used to operate RTTY with Navy Operators in the Pacific from my home in Massachusetts. We exchanged a lot of ASCII art, especially at Christmas.
My Dad really got a kick out of it, especially when they’d send a bunch of line feeds and there would be paper everywhere.
This is an Electric Typewriter on steroids.
More reliable than social media. Bad messages from negative nellies can be EASILY prevented by simply... Hanging up!
I remember in the 1980's when we "upgraded" our landline-switch printers from this technology to the "advanced" Terminet series. Interesting evolution, from a jumping rectangular device full of fonts, to a spinning belt like a flying picket fence, with a row of hammers to hit the right character as the fonts flew past that line position. First machine was 300 baud, next came the 1200. Short lived, as a sticky hammer would not retract fast enough, so tore off the next font in the picket fence! Had to clean the hammer mechanism, then, like a dentist, pull the font out of the belt and replace. Then came the relatively simple dot matrix printers, that would print every second line backwards, to save time returning the head to leftmost position.
Remember that sending an e-mail is akin to sending a telegram. Using a teletype just sped up the process. The pre-curser to e-mail. This is what gave us the phrase 'just came across the wire'. Teletype
was used in offices, newsrooms, radio stations and places like the Pentagon.
I seriously just had a nerdgasm. I had never heard of a Teletype computer until now when I was watching an interview with Bill Gates. I don't know why this thing is so amazing to me but holy crap it triggers some sort of primal computer nerd nerve. I love it!
I'm kind of amazed it's like a session was opened to a Unix based server and it's actually being printed on paper.. rather than to a traditional terminal.
It's surprisingly quick though - although I'd be upset if someone started spamming things.
+Daniel Collins Don't forget that when UNIX was written, Teletypes were still used as a method of I/O! You can still do it today with Linux, as long as you have an ASCII capable Teletype lying around.
+museumofcomm When Unix was written both Bell Labs and the Teletype Corporation were part of AT&T so a Teletype terminal would have been the default for the programmers at Bell Labs. Further, when Unix was written Teletype was the traditional terminal. They were truly ubiquitous, including both sides of the Iron Curtain, and any large network for the simple reason that Teletype had repair people all over the place. It was a big company
In the early seventies I actually worked on a system that was architected with the Teletype and the CRTs reversed--that is they used a mechanical Teletype as a console and CRTs as I/O devices. The significance of this is that when the system crashed the Teletype had to be operational to bring it back up. There was no such thing as a headless boot at that time.
+Daniel Collins This teletype, i believe, is the traditional terminal
Yup. This is the very reason it's called *printf()* and why it defaults to */dev/tty*
I think I did that on my C-64. Open channel to printer instead of screen. :)
I worked at Teletype on Touhy Ave in R and D (Research and Development) in Skokie Illinois on the model 37 in the early 70's. In fact I had I ended up with two brand new ones in my basement. Pitched them out (got them legally) cause they were taking up space. What a dumbbell. The fact is the model 37 was obsolete before it got into production. 150 baud is about 15 characters per second. General Electric had a competing printer (The Terminette) that had a print band. Could cruise along at 1200 baud.
I live in Belo Horizonte, Minas Gerais in Brazil. I work with IT for many years. I'm surprised with this machine. I've never seen a CHAT this way...... KkKKKKkk... Very COOL....
I could watch that all day!
This really takes me back - I was trained on a Model 40 in the early 1990s for my Army Signals unit - the Mighty Mighty 712 (call sign RCESZEA). I remember the embarrassment of that "ding!" sound it would make if you transmitted a message with improper formatting.
Unfortunately the other museum has taken their model 37 offline, so this probably won't happen again for some time. MoC's will always been accessible.
This is beautiful. Truly beautiful.
It is mind-blogging how far we have reached from there. I got emotional there. Damn .. :p
Gidz Paul
Becauseeeee you are a nerd like me ..!
This is amazing ..! Isn't it ..?
I live in Poland. My first modem is CommCall1200 (1200baud) in 1990, in 1990 is about 20 BBS in Warsaw.. My next modems: 2400, 9600, 28.000 and 56k. Now I waiting (few days) for fibre 300Mbit :)
My grandpa lives in Poland too and he had test-graphical teletype and PC (286 with Windows 1.0 then 2.0) in 1986. Yes, he had 68k computer too. And 9.6k landline and packet radio and he used 286 mainly for professional purposes (radios).
How's that fiber?
I love this thing! Wish I could try using it to communicate over VHF as a sort of Packet setup
You can. Just get a terminal unit that has a loop interface and tie it to a mechanical teletype e.g. HAL ST-6000. In my area in the 1970's a group of locals did all sorts of artwork over 6M RTTY. I still send ASCII art over 2M packet, but I don't use mechanical teletype, it's strictly screen.
Amazing! What will they think of next! Sending videos through wires?
I really want to run cat /dev/random
James Bos Run cat /dev/urandom. More action.
Both files don't exist on SVR3
yes
Pretty cool. Would've been cooler if one of the two systems involved did line wrapping for the tty.
I don't suppose a simple stty cols 86 would've done it?
Very cool. I walked in and saw the 37 outputting the chat, but didn't make it home to log in to it.
Thanks for giving a view at a good angle of how the print head works (at least, the end product part of it -- still would like to see how the electromechanical decoding system works like what CuriousMarc showed for the Teletype Model 33).
Damn, this is fast. Is it possible to send it a command to switch to the red tape? Or is tape color selection local and cannot be transmitted?
Color could be selected from the remote end by transmittting control characters. I believe the characters used were SO (0x0E) and SI (0x0F), but I don't have a manual in front of me, so I could well be mistaken.
Look at that thing go! Absolutely mad
always have that history command just a few pages back
I really, REALLY want a teletype machine. I have no idea where I'd put it...but I must have one.
Every time I see a video about an old machine like this, whether it be a teletype machine, a typewriter, a Linotype machine, an orchestrion, or anything like that, I think the same thing. My house is by no means a small house, but it's certainly not big enough to amass a collection of things like this. Not to mention the difficulty of finding such things and being able to afford them.
@@user-74652 Typewriters are fairly easy to find, but teletype machines seem to be just about impossible. Well, unless you're willing to pay hundreds of dollars on eBay and a fortune to ship it. I did just get really lucky though. Today, I bought a "telegraph perforator" made by a company called Kleinschmidt. I haven't been able to find out much about it, but it seems to be kind of like an early teletype. You type on a keyboard and it punches the characters on tape in Morse code. It's in pretty rough condition and needs a lot of work, but I think I'll be able to restore it.
No way to disable echo on login?
Ese cabezal es una locura. De qué año es ese teletipo? Es pura mecánica o (al estilo IBM Selectric) o más bien electro-mecánica?
too cool. if I was talking to anyone on irc running this I would drop my sandwich :)
Any tips on getting those old dataphones to work?
Interesting print head. Could it be a precursor to The IBM type ball?
A better System Administrator would of kept the login welcome message and news and prompts as austere and terse as possible... if he know teletypes were connecting to it...
I think it was a one-off event and the teletypes were an exception but I do agree
*watching in awe*
Love that hammering sound!
It's quite interesting how the chat session is talking about solid state technology and how computers can no longer be called machines because of their lack of mechanical parts, and the session is being printed on an actual physical machine that is as far away from solid state as possible.
I worked on most Teletype Corp models but never saw the M37. Seems to be an improved and expanded M35.
The Model 37 was different from the 35 but not so different that it was not obsolete when it came out. The Model 35 is basically a 28 with the characters in different places in the typebox and an extra surface on the selector clutch that only affects the stunt/function box. The M37 had 13 clutches vs. the 6 in a Model 28 or 35. Seven of the clutches were to position the typebox. Four clutches in the front plate positioned the type box left and right: The typebox was 16 characters across so that is 2 to the fourth power---four clutches. On the right there were three clutches that moved the type box up and down. The type box had 96 positions but an ASCII set has 128 characters and functions. The typebox has only six rows because the functions are non printing. So assume eight rows two to the third power with two rows not used (control characters bits 6 and 7 are spacing). The positioning clutches had two possible stop positions to correspond with a mark or a space. Also the selector clutch had two stops and would print two characters per revolution. The clutch had a least 9 cam followers so that if the printer ran 24 seven as ours did the clutch and the mainshaft would wear much faster than that of a 28 or 37.
They keyboard was of course mechanical and designed like other Teletype keyboards so that you could only depress one key at a time. If it was not stepped by crypto or whatever to a lower baud rate it was the smoothest keyboard that I could ever experienced. In that one part it was a step up.
I forgot another important difference. Models 28 and 35 used clutch shoes 150043 and 150044 while the Model 37 used (from memory) 330006 and 330007. The pairs seemed to work interchangeably, however.
I wonder what the MTBF for that print head is.
this video is interesting to watch. how to teletypes can do all that just like a regular computer can do but at a slower pace.
The odd thing is that the model 37 is a slightly souped-up model 28 which was designed in 1940.
wait... is this thing running BASH SHELL?
no, it's running sh (shell). bash was developed later.
Actually it's ksh.
Vernon Nelson, you can. Go to the Living Computer Museum's website, and there's a page where you can request an account so you can telnet into one of their historic computers (via your computer's telnet program, not this, obviously)
Some Amateur Radio folks still use these in limited cases for RTTY. My first networking experience. Paper boxes were heavy.
I want this for receiving my e-mail :D
Tom Jacobs printing out all that nigerian spam. Good idea how to waste your ink and paper!
Lady Eklipse You can filter out spam e-mail and make it print only legitimate messages.
@@eklipsegirl But now you can actually burn it.
I can hear some morse code in the background :O
Good Ear :-)
Yes it was Morse.
I used to work on those things! They got a couple of front plate adjustments a little off ... I gotta go have a nightmare !!!
Where is that 3B2?
The print head moving up certainly slows it down a bunch, I wonder why they didn't put red on the top half of the tape instead, as it doesn't seem to be used nearly as much. Seems a bit inconvenient, no?
If the black was on the bottom and red on top, you couldn't see what you were typing, because the ribbon would obscure it.
Also, once the type box moves up into typing position, it stays there as long as typing is continuous. It only moves down to its rest position if there is a break in typing, so the lag ends up not being long enough to notice.
Sarah Autumn
You can't backspace anyways...
The one that I used in the Navy, we could backspace if we were cutting paper tape with it.
Joseph Wonderless It may have been stored in memory until you pressed return on the last line, or pressed a special key.
Joseph Wonderless When you were cutting a tape, you could always backspace over a mistake, and then type a LTRS character over it. LTRS had the advantage of being "all holes punched", and was not a printing character, so the read mechanism would just advance past it on to the next character.
Oh. I did not even know of a Teletype model 37....!
I knew „only“ 15, 28, 32, 33, 35, 43.
This looks like being a member of the 28/35 line....
I used an ASR-33 for a few years back in the 70s to communicate with a PDP-10 running TOPS-10. After about 8 hours of Conversational Fortran the 33 would just slow down and stop. Got one of those? -- Dick S.
I'm pretty sure they do, the ASR-33 was pretty popular I believe.
Wow!, This your server? but I'm trying make this!
How did you do it?!
Teletype producing lower case letters. Nice.
Miss this sound all the way back to an angc 3 😅
Very anachronistic to see messages about Macbooks and CD burning on the BBS.
Feel like they should still make use of this technology and make text only printers for places that have to print a lot of text documents like schools, an ink ribbon would cost a hell of a lot less then toner or ink cartridges.
Think about that for a minute. You're talking words per minute vs tens of PAGES per minute. There's a good reason places that print a lot of text only started printing a lot of text once faster devices like laser printers came out.
The Airlines still use text only printers. And what you see on the PC running Windows is a non-windows application in a Window---a terminal emulator. The reservation applications were originally written in the early '50's. Within the terminal emulator window you must use arrow keys to position the cursor.
That was so cool!
Wow 👏😮 great 👍
That's pretty cool! Only got to know what a TTY is now :)
Haha, yes! SDF.org! I recognize smj's handle! :D SDF.ORG has several nice Unix machines you can telnet or even SSH into.
What's the max baud rate these support? It's moving incredibly fast as is
I believe it’s 110 baud.
@@ConnectionsMuseum I believe it was 150. In use on a network the network would determine the speed. The operators that called me to fix these would complain that they were too slow. I had to explain that the stepping came from the computer. If the computer technician would up the baud rate from the computer then I could up the baud rate of the Model 37. There were jumpers in the "logic basket" under the printer. The units we had had two printing units and they printed at different baud rates.
@@richardhaas39 MAX 150, rare although U.C. Berkley could do it regularly. Some of the Marine HF stations has a upper 90's limit (and no error correction of course) that was weird. Normally 110 or below (wire and origin station dependant) - Manual said 110 I seem to recall. Line tuning UGH. Best and worst of times.
7:11, just above the banner
The ultimate steampunk computer.
it also could be dieselpunk :)
Not a computer, but a teletype. You can however connect it to the computer and use as a terminal, but it is still a teletype with no processing power. Its like calling mouse a computer.... Or even worse as modern computer mice may have complicated ICs inside like microcontrollers or so... This teletype has no such things...
@@macieksoft Teletype machines can also save messages onto punched tape, right? And then that punched tape can be reloaded into a teletype machine and reprinted? So in a way, it's kind of working like a computer since it can store and retrieve data, even if it's only text. It converts bits from the tape back into printed text.
ct92404 Not really. Teletypes cannot be programmed. They also can't co any maths or logical operations. That way you could say that walkman is computer because it stores sound onto tape and then can replay it....
@@macieksoft like a player piano, which was inspiration for punch tape. So if you think Player Pianos (which predated bletchy park but not babbage ) were computers then let the good times roll. I agree with Macieksoft here @ct6502
Can you even use a rotary phone on VOIP?
Yes but you'd need an ATA adaptor with Pulse to Tone conversion, i dont think VoIP itself supports dial pulsing, only DTMF (Touchtone)
I never knew a Model 34 existed. I had only seen the 33, 35 etc. and then the model 43 dot matrix models around TRW.
For reference, this isn't a 34. It's a 37. This particular model was the top-of-the-line ASCII machine at the time, but it came out just as CRTs were beginning to become popular as terminals, so it didn't sell as well as the old baudot machines did.
:)
I guess I was not quite awake when I entered model 34. I did mean to type model 37.
Is there any closer description of any Teletype? Just watching for 8 minutes is quite boring.
I just got 2 Teletype 43s from my grandparents house. My grandfater worked for C&P Telephone before it became Bell Atlantic, and then Verizon. I also got a telephone dialer, and some central office test equipment. The teletypes seem to work in local / talk mode, and have the built in modems (phone line in / out instead of RS-232 card). The ribbon is dried up, but I've heard they can easily be re-inked. It is wet enough to see the letters print lightly. I'm not sure how to rest the data portion, but I'm sure I could figure it out with a little more research. Does anyone happen to know what these units are currently selling for? I can't find a model 43 on Ebay, Amazon, FB Marketplace, or Google anywhere! Just trying to get a current value! Any help would be appreciated. I currently do central office work, and am located in the Baltimore area. Thanks!
Hi
i am looking for a teletype UGC-74 to my MD-522a, have you to sell me? or do you know where can it buy it?
thanks
At first, I was thinking that's slow, my Arduino's serial can do 115200 bauds, but after seeing the machine, damn, that's fast...
klunk and bang .:) interesting tty demo. thanks
looks like post-apocalyptic underground resistance briefing for a suicide mission.
plz I need this machine, how can I sand to it.
Interesting carriage!
There is something fundamentally wrong with the 12 people who don't like this video.
Interesting Morse in the background when it pauses...
I have a dot matrix printer, I should see if I can get the geek group's IRC printing on it
I am looking the switch 1F5A to my teletype UGC-74 or the keyboard 3A2A1 because i push some words and don't print it, some can help me? thanks
Excellent
看这玩意打字超满足啊……
So satisfying typing process...
This is the most iconic movie sound ever. I don't care what it is. It could be a 100 XBox GPU parallel AI network, mining bitcoin. In a movie, THIS would be the background sound they use. I haven't checked, but I'd bet PIXAR put this sound in WALL-E somewhere.
Love it, love dial up, I made a video connecting my PX8 via dial up:- Epson PX-8 and Acoustic Coupler CX-21 Connecting to Dial up BBS
Dam its fast..
You needed a lot of paper... I still love glass CRT terminals but actually do not miss teletypes.
I don’t think I’m gonna find any higher baud teletype than this.
so early computers were on paper before computer monitors were a thing
can it run minecraft
Girom Christian Calica flipbook edition
I have a daisy wheel typewriter that I have working with an arduino that I use on output bus of the 8 bit computer I made. I should try converting it to work like a TTY, I do have an RS232 port on there so it shouldnt be too hard
Sdf running on a 3b2 that was a few years back.
wow dataphone 300 modems !
Holy shit what a badass print head... !!!!
It's a little bit of an inconvenience, though. The print head wastes so much time moving up to hit the black letters, it makes you wonder why red wasn't put on top, or the head raised to accommodate the red being on the bottom.
It does look and sound really cool, though.
The Navy use to call it a type box.
Joseph Wonderless Teletypes though. Gotta connect to your good ol' PDP-11 from across the country, you know?
Earliest cloud computing I can think of.
If I had one of these print boxes, I'd connect it up to an SMS gateway, so my friends could text message it via a phone number, and I could type on it to send them a text message back. You would really burn through the fanfold paper, but it'd be cool to hear it go off when you got a text message out of the blue....
CHOPPERGIRL AIRWAR Quite difficult to do that. You could place a call, but do to the way data is transmitted and received you'd likely just get garbage on your terminal from the other end.
Best communication way to avoid hackers and governments surveillance
Yeah... a slow-ass, unencrypted bit stream sending standard characters so slowly that a human could read them in transit. *super* secure.
Это было на вершине человеческой цивилизации.