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THE M1GUR DIY VOX RADIO KEYER

I NEEDED A VOX INTERFACE  IN ORDER TO PUT A GATEWAY LINK ON CQ100, BUT AFTER LOOKING FOR ONE ON THE WEB I FOUND SOME AT ABOUT £70 FROM THE MAJOR SUPPLYERS, SO I DECIDED TO MAKE ONE OR CONVERT SOMETHING.

I FOUND JUST THE THING AT http://www.quasarelectronics.com/3013.htm THE TRVS (TAPE RECORDER VOX SWITCH), THIS IS VERY EASY TO CONVERT INTO A VOX INTERFACE WITH VERY LITTLE WORK NEEDED TO DO IT.

1, TAKE OFF THE ONBOARD MIC, THEN SOLDER IN PLACE OF IT 2 WIRES THAT WILL GO TO THE COMPUTERS LINE OUT (SPEAKERS), THIS GIVES THE BOARD THE SIGNAL TO KEY THE PTT.

2, TAKE OFF THE 3.5MM AUDIO JACK AND REPLACE THEM WITH 2 WIRES THAT WILL BE USED FOR THE PTT CONTROL ON THE RADIO.

3, YOU CAN LEAVE THE BATTERY BOX ON OR REPLACE IT WITH A SMALL POWER SUPPLY LIKE A CELL PHONE CHARGER 6 TO 8 VOLTS.

IT WORKS