holrum at hotmail.com
Thu Aug 30 22:12:11 EDT 2018
I once bought a pair of low power 315 MHz TX/RX modules and was going to try them in a model rocket + GPS. I tested them with a serial port and they had a range of a couple thousand feet at 1200 BPS. But when the transmitter was connected to the GPS, the GPS lost lock... turns out 315 MHz * 5 is the GPS carrier frequency. They would totally jam GPS over around a mile diameter. Also the maker of the modules stopped selling them and actually disavowed that they ever existed!
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