Tools, APP Software Used etc.
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KiCad 9.0 |
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MPLAB X IDEMicrochip Technology
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Description
DSP Terminal Unit for RTTY
The project is a terminal unit or modem for amateur radio teletype. It largely emulates an analog terminal unit but uses DSP biquad filters instead of op amp based filters. The tone generation is done with Direct Digital Synthesis. The unit keys a 60 mA loop and detects mark and space on that same loop.
Jul 10,2025
554 views
DSP Terminal Unit for RTTY
4 Layers PCB 132.3 x 159 mm FR-4, 1.6 mm, 1, HASL with lead, Green Solder Mask, White silkscreen
Terminal Unit or modem for "heavy metal" radioteletype. For details, see https://w6iwi.org/rtty/DspTU3/ .
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Published: Jul 10,2025
Standard PCB
Download Gerber file 5
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