Re: External active antenna for GPS #antenna #gps

Andrew Lenton



Remember R10 is there for safety, i.e. if your aerial connection develop a short circuit, you may want to limit the current, most GPS aerials only draw 10’s of mA, so you can put in 50-100 Ohms, measure the current drawn at 5V then come up with a sensible resistor of fuse! Using a low wattage resistor (1/8 Watt) can act as a fuse as well.





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