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Last Updated
03/31/2019
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Detailed entries for one subject from the INDEX TO HOW TO DO IT INFORMATION. |
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RADIOTELETYPE sa PACKET RADIO x RTTY x TELETYPE (RADIO) xx AMATEUR RADIO xx CODING EQUIPMENT xx PACKET RADIO xx RADIO How to generate radioteletype audio frequencies from an Atari 800 computer. Eavesdropping on RTTY (radio-teletype). A simple adapter that changes received RTTY signals into audible Morse code. A convenient control switcher for mechanical RTTY devices. Eliminates patch cords. The RTTY local loop. Basic information describes how a teletype machine is hooked up to receive data. Suggestions for getting started in RTTY on a small budget. RTTY artwork. How to prepare a paper tape for transmission which will form a "picture" when received. RTTY interfaces. An overview. Looks at current loop, voltage loop, neutral loop, polar loop, RS-232, and TTL. Selecting and using a tape recorder for RTTY. Looks at paper tape, open reel magnetic, cassette, and eight-track tape. A simple audio cassette interface for RTTY. Special issue on RTTY. Description of a Radio Shack TRS-80 computer used in a radioteletype system to receive, store and forward bulletins or messages. Programs written in BASIC. How to overcome radio frequency interference in the new solid-state digital RTTY equipment. Customizing the Macrotronics C.W./RTTY interface. (1) Add external control of PLL adjustment and c.w. sidetone volume. (2) Provide a 425 Hz shift on RTTY reception. RTTY demodulators. An explanation of the various types and what to expect from each type. How to implement RTTY (radioteletype) on the IBM Personal Computer. How to build an X-Y display for c.w. and single-ended RTTY TU (interface) signals. A three component oscilloscope adapter is all that is required. How to adapt the TU-II c.w./RTTY interface (Nov.1982) to work with the VIC-20 and Commodore 64 computers. How to interface older RTTY terminals which utilize a loop supply to computers. Getting started in computer RTTY/c.w. Practical consideratons when shopping for equipment. Build an RTTY oscilloscope monitor to facilitate tuning RTTY signals. Tips on using the old Model 15 Teletype teleprinter in RTTY. How to tune in RTTY signals. Understanding modern RTTY codes and modes. Part 1. The ABC's of RTTY. Roll your own RTTY. How to modify the Flesher Corp. DM-170 demodulator board kit and FS-1 AFSK kit for RTTY use. Est. cost: $80. Tone detector circuit will automatically start and stop teleprinter machines which operate on the VHF band. The TU-II revisited. A simple interface unit to receive c.w., RTTY, and ASCII signals with a microcomputer. The "Switchit". How to use one RTTY terminal with two different rigs. Est. cost: $22. Understanding modern RTTY codes and modes. Part 2. How to modify the HAL ST-6 for RS-232 input/output. This will allow it to be connected directly to a computer. How to modify the HAL CT2200 for use with RS-232. This will allow direct connection with a computer. Utility program for the Commodore 64 computer will convert program files to sequential files for over-the-air transmission and visa versa. Build your own versatile radio teletype (RTTY) converter. Unit is designed for loop keying, RS232, and TTL interfacing. How to operate RTTY. Tips for the newcomer. Assemble a portable RTTY station consisting of a battery powered lap computer, terminal unit, and transceiver. An RTTY program for the Commodore C-64 computer. Computerized RTTY. A ground-floor primer. Practical considerations for adapting your amateur radio station for RTTY. The newcomer's guide to AMTOR (Amateur Teleprinting Over Radio), another digital mode of communicating which uses microprocessors in its scheme of error checking and control. A look at the basics and how to use it. How to modify the AEA model CP-1 computer interface to run FSK (rather than AFSK) input. AMTOR for beginners. An introduction to this "modern RTTY". How to work an RTTY contest. Basics of radioteletype and how to adapt it for ham use. Program a home computer to receive and print out radioteletype (RTTY) transmissions. Such transmissions could be computer programs. Includes schematic for interfaces and an assembly language program for a SWTP computer. Teletypewriter fundamentals for hams, SWL'ers and computer hobbyists. Radioteletype reader for shortwave receivers. Part 1. Words and numbers are spelled out as moving characters as the ASCII or baudot code signal is received. Est. cost: $190. Theory and circuit operation. Radioteletype reader for shortwave receivers. Part 2. Construction, alignment, and use. Build the RADFAX decoder to display shortwave non-voice transmissions on your IBM-compatible personal computer. Receive and decode weather charts, radioteletype, Morse transmissions, etc. Est. cost: $60. Speech-scrambling techniques as used in many RTTY transmissions. Morse/RTTY detector. Let your computer decypher Morse code and radioteletype signals received via shortwave radio. Est. cost: $270. Part 1. Morse/RTTY detector. Part 2. | |||||||||
Copyright © by Norman Lathrop Enterprises. All Rights Reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means (electronic, mechanical, print photocopying, recording or otherwise) without the prior expressed permission of Norman Lathrop Enterprises, except as permitted by law. |
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