This page is a work in progress. The original RTTY.COM links page contained
many references accumulated over decades; some are no longer active. Links
here have been verified as working. If you know of a link that should be
included, contact W2TTY.
Original Site
RTTY.COM — Original Site
www.rtty.com/index.htm
The original RTTY.COM website, built by George Hutchison W7TTY and
Bill Bytheway K7TTY. The site you are reading now is a rebuild and
expansion of that work. The original remains online as a legacy archive.
Community
GreenKeys Email List
mailman.qth.net/mailman/listinfo/greenkeys
The primary active community for teletype collectors, restorers, and RTTY
enthusiasts. Covers all aspects of mechanical teleprinters, terminal units,
restoration, history, and buying and selling. Hosted at QTH.net.
ARRL RTTY Resources
arrl.org — RTTY PDF
The American Radio Relay League’s RTTY reference document, covering
operating practices, contest information, and technical background.
BARTG — British Amateur Radio Teledata Group
bartg.org.uk
The UK organization dedicated to RTTY and digital modes. Active contest
program and technical resources for European operators.
Harold Hallikainen W6IWI — Teletype & RTTY Reference
w6iwi.org/az
Harold Hallikainen W6IWI’s reference pages covering teletype machines,
terminal units, and RTTY — a well-regarded resource from an amateur radio
operator with deep expertise in the subject.
Software
MMTTY
hamsoft.ca/pages/mmtty.php
The most widely used Windows RTTY software decoder. Essential for decoding
ITTY streams on Windows with a virtual audio cable.
fldigi
sourceforge.net/projects/fldigi
Cross-platform multi-mode digital decoder (Windows, Mac, Linux). Includes
RTTY mode with configurable shift and baud rate.
VB-Cable (Windows virtual audio)
vb-audio.com/Cable
Free virtual audio cable for Windows. Routes audio from a media player
to a decoder without a physical connection.
BlackHole (Mac virtual audio)
existential.audio/blackhole
Virtual audio routing for macOS. The Mac equivalent of VB-Cable.
Loopback (Mac virtual audio)
rogueamoeba.com/loopback
Commercial virtual audio routing application for macOS by Rogue Amoeba.
Routes audio from one application to another — useful for feeding
an ITTY stream directly into a decoder without a physical connection.
A paid alternative to BlackHole with a polished interface.
History & Reference
Nick England K4NYW — Teletype Documentation Library
navy-radio.com
The most extensive online collection of teletype documentation known to this
site. Nick England K4NYW has assembled manuals, schematics, and reference
material covering a vast range of teletype machines and associated equipment.
An essential resource for collectors and restorers.
Antique Radio Forums
antiqueradio.org
Forums covering vintage radio and communications equipment, including
occasional discussion of teletype machines and associated gear.
Related Services
ITTY — 60 WPM Live Stream
internet-tty.net:8000/ITTY
RTTY.COM’s own ITTY 60 WPM wire service stream. Direct MP3 link.
ITTY — 100 WPM Live Stream
internet-tty.net:8010/ITTY100
ITTY 100 WPM high-speed stream. Direct MP3 link.
ITTY Europe Live Stream
internet-tty.net:8040/EUROPE
ITTY Europe stream, BBC news at 50 baud European standard. Direct MP3 link.