HAL RTTY equipment manuals

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• Please send me email with additions, corrections, info, etc.
• History of HAL Communications Corp.
• Timeline of HAL products (about half-way down the page)

• HAL Catalog Spring 1979
• Let's Get on Frequency - How to Tune in RTTY Signals by Bill Henry K9GWT
• RF Induced Problems and Solid-State RTTY Terminals by Bill Henry K9GWT
• High Tones, Low Tones, Modem Tones - What Are They and What Do They Mean? by Bill Henry K9GWT
• RTTY Demodulators - You Can't Work 'em If You Can't Hear 'em by Bill Henry K9GWT
• ASCII, Baudot, and The Radio Amateur by Bill Henry K9GWT
• CLOVER - fast data on HF radio by Bill Henry K9GWT and Ray Petit W7GHM - (thanks to Jay WS7I)
• HF radio data communication - from CW to CLOVER by Bill Henry K9GWT and Ray Petit W7GHM - (thanks to Jay WS7I)
• Using a Modem and Soundcard - Switch Gizzie by Bill Henry K9GWT - (thanks to Jay WS7I)
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• Some HAL Manuals for sale - Surplus Sales of Nebraska

These manuals are for your personal use - NOT FOR RESALE

HAL CRI-200 Computer RTTY Interface - need a manual