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Is it required to have a nice parabolic throat cavity? Or will any throat do?
I will try a temple shot when I go off to buy groceries today.
What frequency do these things operate at?
RF Receiver ... 315 MHz (North America), 433 MHz (UK and ROW).
When a transmitter is connected to an antenna by a feed line, the impedance of the antenna and feed line must match exactly for maximum energy transfer from the feed line to the antenna to be possible. The impedance of the antenna varies based on many factors including: the antenna's natural resonance at the frequency being transmitted, the antenna's height above the ground