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HAWK1943  -

 

The schematic of your transmitter calls for a battery voltage of 1.2 to 3.5 volts. If you are using a single 1.2v  cell, increasing the voltage to 3.5 will increase the transmitter power considerably. Also, When the bird is flying normally, the antenna on his tailfeather will be horizontally polarized (parallel to the ground). This means your receiving yagi needs to be horizontally polarized too for maximum reception.

 

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