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Ferrite bar antenna for car radio
Any idea how to couple a ferrite loopstick antenna
to a car radio input for AM reception? I experimeted using a 6 inch loopstick and tunning cap with reasonable results, but I'm wondering what the best approach is. I connected one side of the tuned circuit to the chassis of the radio, and other side to the antenna input. But the tuning is very broad and I don't get a very sharp peak when adjusting the capacitor. It seems the car radio input is very high impedance and doesn't load the loopstick much. Would another winding on the loopstick of longer length work better? Would a JFET amplifier improve the operation? -Bill |
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