Sound Card Data Interface Version 3

While building my Version 2 USB Data Interface, I had some ideas on shrinking and improving the design.

schemaHere is the VOX Schematic. Its smaller, has integrated delay and switches a relay. The 22 K pot is for trimming the audio level. If its too loud from the PC it will stay in TX mode.

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Playing with different designs.

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Testing it with actual Data from the Pc / radio.

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The new design, much smaller and less prone to RF !

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Relay switching of the TX line. better isolation and works with older equipment ! the capacitor provides a delay. preventing continuous switching.

20140429_172006-1Its boxed, I have used the same box and hardware as my previous version. Need to give it some tests.

This project is under development. I will add more once, I am sure the new setup works well.

 

 

 

 

 

 

 

 

 

 

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