[GreenKeys] Police teletype
John, W9DDD
w9ddd at tapr.org
Fri May 29 11:26:28 EDT 2020
Model 40
Page 2 has a cartoonish rendition.
http://www.navy-radio.com/manuals/tty/jh/ttyman1/TeletypeManuals/model40/AMPS.pdf
Long version about page 83/86
http://bitsavers.org/communications/teletype/40/325-054_Synchronous_Dataspeed_40_4_Service_Mar79.pdf
I had a model 40 branded printer that was free to good home. I didn't
turn out to be a good home. Life got in the way of even hooking it up.
I swear it weighed as much as an 28 ASR. It was boxier looking than the
one shown in the above reference. Perhaps if I had access to this:
http://bitsavers.org/communications/teletype/40/426_Model_40_Installation_Manual_1979.pdf
I may have had it up and running.
John, W9DDD
On 5/29/2020 10:01 AM, Jeff G wrote:
> There was an At&t terminal that was branded as Teletype later on. Its
> fairly unique with a pivoting monitor.
>
> Jeff KC3GJX
>
> On Fri, May 29, 2020 at 10:51 AM Paul Heller <paul0926 at comcast.net
> <mailto:paul0926 at comcast.net>> wrote:
>
> I don’t know if teletype made a CRT machine, but HAL did, for use
> with RTTY. I have two and can send some photos if anyone is interested.
>
> Paul
> W2TTY
>
>
>> On May 29, 2020, at 4:27 AM, Steve Garrison <steve.n4tty at gmail.com
>> <mailto:steve.n4tty at gmail.com>> wrote:
>>
>> I doubt they are Teletype as we know them, but are just referred
>> to as teletypes as most law enforcement agencies did at one time
>> use them and the name has just hung around. Sort of like folks
>> referring to the brand name Xerox for any copying machine. Unless
>> of course he has now seen the one you got from Paul and he has
>> verified that its looks a lot like what he has seen at work.
>>
>> Back in the 80's and early 90's I worked as a dispatcher for a
>> local PD and they had a terminal, not a Teletype, connected to a
>> similar, or maybe even the same, network. They also referred to
>> the terminal as a Teletype, but it was a dot matrix DecWriter (I
>> forget the exact model number) that was much faster than a
>> Teletype. Now Teletype did make a CRT based machine (I think I
>> remember -others help me out here) but I've never seen one of
>> those, except maybe pictures, I'm sure that folks that used to
>> use those would still refer, in many cases, to their replacements
>> as Teletype machines.
>>
>> Now I'm ready for the floodgates to open letting me know I'm way
>> off base! 😊
>>
>> Steve G./N4TTY
>>
>> -----Original Message-----
>> From:greenkeys-bounces at mailman.qth.net
>> <mailto:greenkeys-bounces at mailman.qth.net><greenkeys-bounces at mailman.qth.net
>> <mailto:greenkeys-bounces at mailman.qth.net>> On Behalf Of E.
>> Sent: Friday, May 29, 2020 12:33 AM
>> To: Robert Downs via GreenKeys <greenkeys at mailman.qth.net
>> <mailto:greenkeys at mailman.qth.net>>
>> Subject: Re: [GreenKeys] Police teletype
>>
>>
>> Something interesting my brother told me a few weeks ago. After I
>> met up halfway with Paul - to pick up the Teletypes he was giving
>> me, my parents called my brother, to ask him if he would help me
>> with moving some stuff. He asked what and hey told him
>> Teletypes. He said, oh yeah, I know Teletypes. They asked how??!
>>
>> Well, I ended up asking him. A little background - my brother
>> works for a law enforcement agency. I won’t say who or what to
>> protect him… but he told me that the office/agency that he works
>> for still uses them!… and on top of that, all of the various
>> offices/agencies around the state has one, connected to the same
>> national circuit! He says that it’s a two-week course to get
>> certified on using one. These Teletypes are hooked up to the FBI
>> APB “wire” (well, at least I’m going to call it a wire ;p ). He
>> can’t take pictures of it because it’s in a secure location and
>> the certification process is so that the FBI doesn’t get mad when
>> an operator messes up… he’s going to try to get me the model
>> number once everyone’s back at the office (pandemic!) - but he
>> described it as a Teletype, being hooked up to a computer-like
>> terminal interface, connected to the FBI. I asked him how in the
>> heck is the FBI still using Teletypes in this day in age and he
>> said that apparently it’s the quickest way the FBI has to get APBs
>> out to everyone across the country.
>>
>> I find it very interesting - the more you learn, huh ;p ? Might
>> explain why the one Policeman in that local newspaper article from
>> last year said that they got the information on the wanted man
>> they soon would arrest from “Teletype”. Cool beans ;D ~
>>
>>
>>> On Dec 18, 2019, at 3:42 pm, Ralph Irish <w8roi at wowway.com
>>> <mailto:w8roi at wowway.com>> wrote:
>>>
>>> In 1969 and later, I had a second job at a two-way radio service and
>>> installation outfit. They handled RCA equipment at that time, before
>>> it 'surrendered' the name and became "Tac-Tec" or something close
>>> to that.
>>>
>>> The location was just a mile or so from one of the local police
>>> jurisdictions and that department had assigned an officer to be the
>>> 'liaison' between the department and the radio store. He spent a
>>> lot of time there and we all got to know him pretty well.
>>>
>>> Sometime in that timeframe, his department installed a Model 28ASR to
>>> work into the LEIN (Law Enforcement Information Network) system and
>>> it could also 'run license plates' from the Secretary of State in
>>> Lansing, the state capitol. (Michigan, since I didn't mention it
>>> above.)
>>>
>>> While at the 'headquarters' I was chatting with the dispatcher, who
>>> was one of several officers who rotated in and out of that job. He
>>> commented that the machine was running, and making noise like it was
>>> doing something, but nothing was showing on the paper. I told him
>>> about 'Print Suppression' and that some local department was
>>> receiving
>>> or sending things which made the machine 'do things' but not print.
>>> Every time it came alive he had to glance over there to see what was
>>> printing (or not printing!)
>>>
>>> I opened the cover and found the Print Suppression solenoid and
>>> pointed it out to him. When the machine started running but not
>>> printing, I pushed the solenoid in and the printer started to put
>>> ink on paper. He was impressed.
>>>
>>> A few weeks later, the owner of the radio place got a HAL
>>> Communications, RVD-1000 or whatever the number, and put it to work
>>> occasionally in the store. He was not a ham but knew a lot of
>>> hams, since there were three working at the store, and one more
>>> became a ham in the interim.
>>>
>>> Just for laughs, one day when the 'liaision guy' was in the
>>> store, the
>>> owner commented on the HAL thing and told him that he could
>>> install it
>>> in the station so they could see all of the traffic intended for
>>> all area departments. He took it to the station, found the right
>>> places to grab data and fed it to the RVD thing.
>>>
>>> It immediately went to work and put info on the monitor he brought
>>> along. The dispatcher was most interested in what he was seeing.
>>>
>>> Some situation came about where there had to be some communications
>>> between departments due to someone speeding out of one jurisdiction
>>> into another. Normally, one dispatcher would use radio to
>>> communicate
>>> with other dispatchers, hoping to get a neighboring department to
>>> intervene and stop the speeder or robber or whatever the
>>> situation was.
>>>
>>> The dispatcher, seeing what was happening, grabbed HIS mike and
>>> announced that their department would help by stopping the fleeing
>>> speeder. He did this BEFORE he was asked to! The other
>>> dispatcher was probably a bit confused by this, but the stop
>>> happened and the other jurisdiction car arrived and wrote the
>>> ticket, etc.
>>>
>>> The radio store owner tried to interest the Chief of Police in this
>>> RVD/Monitor device being installed on a permanent basis, but when he
>>> heard the price, he declined. We could have just as easy found a way
>>> to activate that Print Suppression solenoid with a pushbutton,
>>> and the
>>> only down side there would be a large increase of Teletype paper!
>>> And, I don't know how Michigan Bell would have reacted if they
>>> knew that someone had been 'diddling' with their data wires being
>>> fed to the 28ASR. It was all on a monthly lease, and if there
>>> was a way to get more money per month, they would have been most
>>> happy.
>>>
>>> Sadly, it never happened, but it was an interesting demo of what was
>>> available, back in the '5-Level days'. I don't know if HAL ever
>>> made a later model that would respond to ASCII.
>>>
>>> The radio outfit relocated and changed hands and I've lost track of
>>> the original owner, although I'm told that he is still in the
>>> area, retired and loving it!
>>>
>>> 73,
>>>
>>> Ralph - W8ROI
>>>
>>> - - - - - - - -
>>>
>>>
>>> On Dec 18, 2019, at 11:56 AM, Steve Garrison wrote:
>>>
>>>> I worked a job as a police dispatcher for my local police
>>>> department in the middle 80’s and I had a DecWriter for my
>>>> communications with GCIC (Georgia’s equivalent of the NCIC).
>>>> While not an actual Teletype machine, it was referred to as a
>>>> teletype by all of the officers and non-officers in the department.
>>>>
>>>> Steve G./N4TTY
>>>>
>>>> From: greenkeys-bounces at mailman.qth.net
>>>> <mailto:greenkeys-bounces at mailman.qth.net>
>>>> <greenkeys-bounces at mailman.qth.net
>>>> <mailto:greenkeys-bounces at mailman.qth.net>> On Behalf Of Nick
>>>> England
>>>> Sent: Wednesday, December 18, 2019 10:54 AM
>>>> To: Greenkeys <greenkeys at mailman.qth.net
>>>> <mailto:greenkeys at mailman.qth.net>>
>>>> Subject: [GreenKeys] Police teletype
>>>>
>>>> FWIW - from a Craigslist Job Description posted 11/25/19 for
>>>> Scotts Valley CA Police Dispatch/Records Supervisor - "...
>>>> operate office equipment as required to perform duties of the
>>>> position, including but not limited to radio, tape recorder,
>>>> teletype, transcriber, calculator, photocopier, typewriter, and
>>>> computer..."
>>>>
>>>> (No, I'm not looking for a job - it just pops up when I search
>>>> Craigslist for "teletype")
>>>>
>>>> FWIW - the FBI had an extensive RTTY network using TMC GPT-750
>>>> transmitters and National NC-400 receivers.
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