After construction, power up the circuit from the concerned RC channel (e.g. channel 5) of the receiver, turn on your transmitter, and verify that moving the R/C stick (or an auxillary toggle switch ) ...

[IMSAI Guy] grabbed an obsolete XOR gate and tried a classic circuit to turn it into a frequency doubler. Of course, being an old part, it won’t work at very high frequencies, but the circuit… ...