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For all you RTTY / Teletype fans out there..
开云体育For all you RTTY / Teletype fans out there, this is a fantastic video taking the viewer through how a teletype unity actual works including details into Baudot 45, a full teardown and rebuild of both a typewriter style and ticker-tape style teletype, etc.? Great stuff and well worth your time: ?? This video comes from "Usagi Electric" who has made a lot of other great videos on building his own vacuum tube based 1bit computer, restoring various tube and legacy Mini computers, etc.? --David KI6ZHD |
开云体育Very interesting, David.? I have a model 15 which I acquired around 1968 and used for many years here prior to the ubiquity of PC's.? The machine in the video described as a model 14 is not.? The model 14 was a typing reperforator usually with a rotary TD attached to transmit.. Because the paper tape was also used to transmit it needed holes, but if you had holes you could not read the print.? The solution was to punch "toilet lids."? The chad was attached to the paper tape by being punched almost all the way around.? I had one and let it go many years ago.I will be happy to share any and all, as well a few stories about using the model 15 and it's quirks. On 9/22/2024 7:55 PM, David Ranch,
KI6ZHD via groups.io wrote:
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On 23/09/2024 03:55, David Ranch, KI6ZHD via groups.io wrote:
For all you RTTY / Teletype fans out there, this is a fantastic videoTakes me back to my youth. School radio club was run by a teacher into RTTY. So I grew up from 11-18 on AR88, CR100, B40 receivers and Teletype models 14, 15 & 28s as well as British Creed 7Bs. We used US CV89A FSK units. The built in 1in scope made tuning noisy signals easier. As a kid I wanted to play with computers and solid state stuff but there no computers and most gear used valves(tubes) and radio and RTTY was the next best thing. Teletype 28 was my favourite unit. We had 2 of them both KSR units. Plenty of TTY15 page printers and a complete TTY19 which was a TTY15 ASR unit and an extra tape TD unit on a metal table strong enough to take the weight. The PSU used a mercury rectifier so there was a light show in time to the selector magnets clicking. They were all set for 45.45 baud commercial speeds and so we'd copy news output from behind the Iron Curtain, Tanjug and TASS being the easiest signals to copy. I can remember copying some class propaganda about "American imperialists and fascists" from an Albania news source. Even as a kid with limited understanding of world politics it was funny to read. I last used a real Teletype in 1979, 45 years back. The last few years there has been a demonstration teletype running at the Friedrichshafen Rally. The smell of warm machine oil and the clackety-clack made me feel 50 years younger. That was a Siemens 100 which is similar in looks to a TTY15 page printer but quieter. RTTY with a PC holds no interest compared to RTTY with a real TTY. Andy |
开云体育I was an Air Force Teletypewriter Tech. for 20 years, five
months, eight days, Nov. 1958 to Dec. 1978. Msgt Donald Casillo
USAF (ret)? On 9/24/24 11:02, Bo, W4GHV wrote:
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Teletype repair was one of the school choices that the Army offered me in 1976. ? Glad I declined that one.? Nike Test Equipment Repair (22L) provided a lot more opportunities over the years. Davee W2IJL On Tue, Sep 24, 2024 at 2:11?PM Donald, KD5UGY via <dcasillo=[email protected]> wrote:
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Well if we’re waxing nostalgic I was army signal corp when I got my first ham license. Bit later than you two, 2003. Ended up being a physician instead so can’t say the signal corp stuck with me, tho I still ride the waves! KD7YJW On Tue, Sep 24, 2024 at 14:45 David Matthews via <n36078=[email protected]> wrote:
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开云体育I was for 20 years five months and eight days a Teletype Tech. in
the Air Force. Models 15, 19, 28s. I worked for Teletype Corp.
(three years) after military retirement working on Models 33, 35,
I also worked on Model 40 and 43s (eletronic? type). I also worked
for the FAA for 24 years on flight strip printers and lots of
eletronic gadgets. Msgt Donald Casillo USAF (ret) ? On 9/22/24 22:45, Paul Simon wrote:
Very interesting, David.? I have a model 15 which I acquired around 1968 and used for many years here prior to the ubiquity of PC's.? The machine in the video described as a model 14 is not.? The model 14 was a typing reperforator usually with a rotary TD attached to transmit.. Because the paper tape was also used to transmit it needed holes, but if you had holes you could not read the print.? The solution was to punch "toilet lids."? The chad was attached to the paper tape by being punched almost all the way around.? I had one and let it go many years ago. |
开云体育I am thankful that the Air Force kept me as a TTY tech. for 20
years, because I had no problem finding a job in my retirement.
Msgt Donald Casillo USAF (ret) On 9/25/24 08:21, Bo, W4GHV wrote:
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Bruce W4BRU
Bo, W4GHV
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