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)

 

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. Streaming audio link to the RTTY.COM server, should bring up your default software on your computer, usually RealPlayer or WinAmp Check out National 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.

Mike and Key Flea Market

Saturday, March 10, 2012

Puyallup Fair Grounds, WA

The Mike and Key Amateur Radio Club is a Seattle, Washington (USA) area organization devoted to all aspects of Amateur Radio Operation.

This is one of the largest flea markets and is usually an excellent place to find antique equipment including RTTY terminal units and occasionally a teletype machine.  Mostly there are boxes of electronic parts to rummage through.

Rumor is that George, W7TTY will selling RTTY equipment.

http://www.mikeandkey.org/flea.htm

Latest Headlines

Callam County ARC
June 10, 2010

 George, W7TTY gave a trip report that he and Nita made to pick up a tower and trailer assembly. This was an item donated to the club by Bob McClung WA6KNW of San Jose, Ca. George described a short side trip they made to the KPH Project at Point Reyes National Seashore, part of the National Park Service . (No expenses were claimed for this part of the trip). This included pictures of the facility.

Then George showed pictures of the trailer and its various features. The trailer is currently at Nita’s place and will be moved to Johan’s storage lot.

Note: This trailer was a “get it now” kind of offer. George was offered the assembly and said he couldn’t use it but that the Club might. The trailer was located on commercial property and needed to be removed immediately.  The Board was contacted and approved $500 for gas to get the trailer back to Washington.

The Raffle Drawing was held for the YASEU FT-990. Thirty-nine tickets were sold and the winner was……… George Hutchinson, W7TTY.

RTTY at Pacificon
2011

Many folks enjoyed the presentation this month, presented by George Hutchinson, W7TTY, on itty bitty rtty...hi hi. It's RTTY, but thought the rhyme was cute. If I started saying exactly what it was, I'd mess it up so bad no one would come, so learn with you I will.  All I know is it's communications over the Internet to a printer, 24/7, which reads out on paper.  He's tried to explain it to me, and I'm sure most of you pros know what it is and how it works, but to me it sounds interesting and I'm always up for new ways to learn how to get and give news, or communications.  Whether we like it or not, it's not 1999 no longer my friends.  New Technology, or even if it is old, let's keep up.

 

Nita~KE7DRT
CCARC President

WLO RTTY News is now on the air!  Aug 18, 2011

We will run call bands for the next day or so, and then put on news traffic. Frequency is 8473.000 KHz. Power is 1000 watts. On-Air time is 24/7. Signal reports are of great interest to us. Those of you who can hear and/or copy WLO RTTY NEWS are urged to listen to WLO at various times of the day and night, and send us an e-mail noting your location (City and State) the time of day when you hear us, and the signal strength. Please bear in mind that this is a commercial class of transmission, and the mark carrier frequency is lower than the space. This is opposite of amateur RTTY transmission, so you will either have to adjust your receiving apparatus to use reverse tones, or tune to the UPPER sideband.
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
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Bill Bytheway
K7TTY
(Co-Webmaster)  		Bill cringing at the possibilities for next changes to the WEB site.

Copyright © 2011 RTTY.COM Last modified: 11/26/2011