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I am tring to make an AVL (Automatic Vehicle Locator) using SIM300DZ GSM Module and Holex M89 GPS Module via a PIC18 u-controller can anyone help me implimenting at commands? Has anyone done a similar project before...Kindly help
I have worked on different type of cell phone jammers but all have VCOs which produce a disturbing signal I found this very different circuit on the internet please have a look
**broken link removed**
but no specific details are given, can anybody explain how this works
I have different VCOs and most of them have a different operating and tuning voltage, I want to control the combined region of the VCOs i.e eg if I have 3 VCOs from 50-100, 100-250, 250-500 I want a control circuitary by which I can sweep all the region, as well as if a user...