VOX Type PC to Radio Interface for Internet Link

The usual two meter radio communication is very limited when talking about coverage distance. This is due to the fact that at VHF frequencies and beyond, radio propagation is likely on line of sight. The higher your antenna is, the greater the distance it will cover. Nowadays technology has gone far; with the aid of internet communication thru VOIP, voice communication brings the world closer together. To cope with the advancement of technology, amateurs able to communicate worldwide thru their radios but not with the use of a huge and bulky HF transceivers, instead they were able to use the internet technology to hook up their radios to the internet. Available commercial interface unit cost so much that putting up a server is difficult.

 

This simple PC to radio interface project functions as a voice activated switch that will enable the audio from the radio to be retransmitted to the internet and vice versa with the use of a PC. The connecting wires must be a shielded type to avoid stray rf pick-up that might affect interface functionality. Internal power supply unit is needed especially when a portable transceiver is used while this can be eliminated if a mobile base transceiver is available since the 8 volts supply can be taken directly from the microphone input connector. The software for this project is the SKYPE because it can be downloaded for free on the internet. Implementations of this project can be a server, station identifier or to link several repeaters all over the world.  ---73 de hevir

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