Model 28 ASR

RTTY.COscilliscope representation of MARK-SPACE signalsM

RTTY Model 28 ASR and KSR Machines

History of RTTY and Major Contributors - When and where and how it started, and how it advanced and changed over the years. Stories and short biographies of those individuals whose efforts advanced the hobby and made it better for others.

Introduction to Amateur Radio Teletype - By Irvin M. Hoff, K8DKC/W6FFC.   Mr. Hoff was an active radio amateur and a recognized authority in the field of amateur radio teletype.  Articles by Mr. Hoff have appeared in leading publications for decades providing major contributions to the technical advancement and increasing popularity of RTTY.

Teletype Story - The booklet 'THE TELETYPE STORY' was originally produced as a handout commemorating the 50th anniversary of The Teletype Corporation.

About RTTY.COM - An introduction to the Web Master and Co-Web Master who have been involved in RTTY for many decades.

Registry

Contact Us - If you have any questions about RTTY hardware or software or want to suggest improvements to this WEB site.

 

Resources

Bytheway Software Development Lab (BSDL) - wealth of software developed specifically for the RTTY enthusiast.

Kretzman Technical Library - Schematics, equipment manuals, adjustments, and other not-so-easy to find info. We have looked long and hard, spent many hours providing you difficult to find information on teletype machines, terminal units and other information needed to bring your RTTY gear back to life.

Baudot RTTY Frequency List - Current list of known RTTY broadcast frequencies.

 

Forums

Greenkeys - GreenKeys is a mailing list (reflector) devoted to the discussion of older radio teletype (RTTY) gear including mechanical teleprinters, terminal units, rolls of paper, gears, cams, wingnuts, paper tape, and anything else related to older RTTY gear.

LINKS - Other sites of interest, noteworthy suppliers, and places extraordinary.

 

Fun Stuff

Royer RTTY Art Pavilion - Dedicated to the memory of Don Royer, WA6PIR. A collection of Teletype art pictures collected over the years, most of them recovered from paper tape and converted from BAUDOT to ASCII.

Code-Card Corner - The wallets, toolboxes, tech manuals and window corners of TTY repairmen invariably had Type-Box Charts, ASCII and BAUDOT code bit charts, etc. Here are some for you to enjoy.

Instructional Videos - A collection of YouTube videos showing you various teletype machines in action.

 

Teletypes

Model 14 Reperforators

Model 15 KSR

Model 19 Teletypewriter Set

Model 28 KSR

Model 28 ASR

Model 28 Extended ASR

Tactical Teletypewriter Set (MITE)

Model 32

RTTY TAPE EQUIPMENT and TRANSMITTER DISTRIBUTERS (TD)

 

Demods & Terminal Units

Alltronics Molel-A (1955)

W5HFZ-W5RJG RTTY Converter (1955)

Mainline TT/L FSK Demodulator (1964)

Mainline ST-3 Demodulator (1970)

DT-500 and DT-600 Demodulator made by DATA TECHNOLOGY ASSOCIATES, INC (1977)

Mainline ST-6 Demodulator (1970)

Mainline UT-2 Demodulator (1975)

Basic first release ST-5 (1970)

Updated ST-5 (1973)

Frederick Electronics 1632 Demododulator (1976)

RTTY-CW-800A

 

Service & Maintenance

Western Union Field Tech Service Manual - 168 Pages of info on the care and feeding of the Models 28 and 35 ASRs.  This was a compact-sized Technical Manual issued to Western Union Field Technicians as a handy aid in the maintenance and lubrication of Model 28 and Model 35 ASR Sets.

The Teletype Stunt Box Book - All about the Model 28 Function/Stunt Box

Critical Tuning - RTTY.COM is pleased to present BSP Section 570-001-901, which is a compendium of Critical Adjustments for the most commonly found Teletype Equipment from Model 14 to Model 35.

Teletypewriter Maintenance Tools Tools -- A very late edition (AUGUST 1977) of the Teletype Corporation Maintenance Tools Catalog.


Our Mission

RTTY.COM has been established to focus on the many aspects of Amateur Radio Teletype (RTTY) and to present to the dedicated RTTYer, and to the curious, a location wherein one can find information relating to RTTY and BAUDOT communications.

Anyone and everyone who has ever had any interest or participation in Amateur RTTY is encouraged to frequent this website. Your comments and suggestions are solicited so that the best possible utilization of this website can be implemented. 

The YouTube video to the right demonstrates a Model 28 teletype machine copying news bulletins being transmitted by the 24/7 Internet service provided by RTTY.COM.  Read on for more information about this interesting service being offered teletype enthusiasts.


Breaking News  

Our Services

We offer Internet teletype broadcast services which can be received using software on your computer.  Click Here for Instructions on how to Listen to FSK Teletype Signals News and Features Updated Periodically 60 WPM 5-unit Code - 2125 Mark - 2295 Space

The following two links introduce you to an online Internet service provided by RTTY.COM.  Clicking on a link will bring up your computer's default sound player, usually Real Player or WinAmp. 

  1. Streaming audio link to the RTTY.COM server, should bring up your default software on your computer, usually RealPlayer or WinAmp NEED SOMETHING FOR YOUR MACHINES TO PRINT??? Check out - ITTY - General News Bulletins via Internet broadcasted 24/7.

  2. Internet Teletype Greenwich Channel Check out Greenwich news, politics, military and sports via Internet broadcasted 24/7.

  3. Streaming audio link to the RTTY.COM server, should bring up your default software on your computer, usually RealPlayer or WinAmp is another version of ITTY, but it targets those users that do not want the 24/7 broadcast feed and only want to read mail from other users, similar to your email you get today. The video on the right shows an example of how to use this service.


Latest Headlines

Bytheway Software Development Lab
 (BSDL)

George and I have been working for decades promoting RTTY.  George has always been the expert teletype hardware and hardware/software integration and my strong point has been in embedded software development.  Together we make the team that provides you with a source of both software and hardware archives to enhance the hobby.  Please visit my site as well.

 

For more info go to http://www.k7tty.com


New Greenwich
 Internet Teletype Channel

The GREENWICH Channel has been set up and is now running. This Channel is in response to inquiries from European teletype enthusiasts as to whether or not they could have an ITTY Channel that conforms with their technical standards. The MARK tone is either 1275 Hertz or 1275 Cycles, depending on one’s upbringing. The SPACE tone is either 1445 Hertz or 1445 Cycles, once again dependent on one’s early life. The transmission speed is 50 Baud, and bell is upper case “J”. The receiving address is 209.180.212.65:8040. For those wishing to submit items to the GREENWICH Channel the address is GREENWICH(at)209.180.212.65:8040. Line length is limited to 68 characters. Use of the ITTY Mailer, available at Bill’s Software Lab (for FREE) is recommended. The mailer can be easily adapted to the GREENWICH Channel using the “OPTIONS” feature.

Do as follows :

  1. Download and open the ITTY Mailer.
  2. Open the Mailer Main Screen.
  3. Upper Left corner of the Mailer windows shows “OPTIONS”.
  4. Click on OPTIONS.
  5. “FIELD OPTIONS” Dropdown will appear.
  6. Click on “FIELD OPTIONS”, “TOGGLE ADVANCED CONTROLS” will appear.
  7. Access to the Server Name, “FROM”, PORT number, and IP ADDRESS will become available, as well.
  8. In the Server Window enter “GREENWICH”.
  9. In the “From” Window enter your identifier, with your Name or Town or other identifier.

  10. In the PORT window enter 598.
  11. In the IP Address window enter 209.180.212.65.
  12. DO NOT DINK WITH THE SUBJECT WINDOW!!! - - LEAVE IT ALONE - -
  13. Save your changes with a “CTRL- C”.

It should now be good to go. Close the mailer and reopen and your changes should be in place.

Pacific Northwest Amateur Radio Events

Below I've listed some of my favorite events in the local Washington area.  I can't do a better job than N7CFO does on his site.  Please visit his site for a more complete listing.

 

For more info go to http://www.n7cfo.com/amradio/hf/hf.htm


Mike and Key NW Flea Market
Saturday, 15 March 2015

This is the 34th Electronic Show and Flea Market held at the:

PAVILION EXHIBITION HALL
WASHINGTON STATE FAIRGROUNDS
9th Ave SE. & Meridian ST S.
PUYALLUP, WA 98372

For more info go to http://www.mikeandkey.org/flea.htm


SEAPAC
Seaside, Oregon
June 6 thru 8, 2014

The 2014 Sea-Pac convention includes numerous exhibitors of new equipment as well as flea market tables where you can find lots of bargains on parts and vintage gear or perhaps sell some of your old equipment. If you don't want to set up a table, you can also sell equipment on consignment through the RAGS Country Store.

 

Chances are that if you are looking for old teletype equipment, vacuum tubes and other types of antique equipment you will find it here!

For more information go to their site http://www.seapac.org

 


Museum of Communications
2012

This museum feature all sorts of antique telecommunication equipment and is located on the second floor of the telephone building in Seattle, Washington.  Volunteers that will guide you through all sorts of equipment including a large assortment of functional teletype printers.

The Museum of Communications (originally known as The Vintage Telephone Equipment Museum) is a 501(c)(3) non-profit corporation located in the Georgetown neighborhood. The address is 7000 East Marginal Way South, Seattle, Washington, 98108.

The museum can be reached on (206) 767-3012 and is open every Tuesday from 8:30 a.m. to 2:00 p.m.

Handicapped accessible.

Museum of Communications Website

The Unofficial Museum of Communications Website


George Hutchinson madly typing away for the next broadcast. This is how I usually see him, asses and elboes! George Hutchison 
W7TTY
(Webmaster)
WWW.RTTY.COM
You Are Visitor #
Bill Bytheway
K7TTY
(Co-Webmaster) 
Bill cringing at the possibilities for next changes to the WEB site.

Copyright 2015 RTTY.COM Last modified: 11/07/2014