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Digital Data Transmission and Reception

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Communication of TRW-24G RF modules with AT90S2313 microcontroller

Communication of TRW-24G RF modules with AT90S2313 microcontroller

This modules working at 2.4 GHz frequency with GFSK modulation, and the data-rate is 250Kbps and 1Mbps.

http://www.serasidis.gr/circuits/TRW-24G_transceivers/TRW-24G_transceivers.htm

Sound Card Interface with Tone Keyer

Sound Card Interface with Tone Keyer

an improved version of the audio interface commonly used to connect a PCs soundcard to a transceivers receive and transmit audio circuits for PSK31, SSTV.

http://members.aol.com/wa8lmf/ham/tonekeyer.htm

Radio Interface Schematics

Radio Interface Schematics

http://www.fly-ul.com/Radio/

PCISCC-4

PCISCC-4

a medium-speed four-port PCI compatible SCC (Serial Communication Controller) plugin card for connection of synchronous serial network devices

http://www.afthd.tu-darmstadt.de/~dg1kjd/pciscc4/index.html

Introduction to Packet Radio

Introduction to Packet Radio

http://www.choisser.com/packet/part01.html

Interfacing the TAPR 9600 bps Modem with the Ottawa PI2 Packet Interface Card

Interfacing the TAPR 9600 bps Modem with the Ottawa PI2 Packet Interface Card

http://www.tapr.org/~n7hpr/pi2.html

Interface two UTP EtherNet equipped PC's

Interface two UTP EtherNet equipped PC's

http://margo.student.utwente.nl/el/ports/pc/utp_pc.zip

Connect two standard office telefax machines via 2 meter ham radio

Connect two standard office telefax machines via 2 meter ham radio

at 2400 bps.

http://margo.student.utwente.nl/el/radio-hf/faxif.zip