Here is the 9 volt GS transmitter which does not use a crystal. This clever design allows only two transistors to generate both the carrier and and the modulation. Shown below at 27MHz 40MHz and 49MHz:
The 6 volt GS super regenerative receiver. Note that the 6 volt supply which consists of 4 AA cells is center tapped and feeds a 3 volt motor. Shown at 27MHz 40MHz and 49MHz:
Here is the 9 volt WH crystal controlled transmitter. It is unremarkable. Shown below at 27MHz and 49MHz:
The 6 volt GS super regenerative receiver. Note that the 6 volt supply which consists of 4 AA cells is center tapped and feeds a 3 volt motor. Shown at 27MHz 40MHz and 49MHz:
Here is the 9 volt WH crystal controlled transmitter. It is unremarkable. Shown below at 27MHz and 49MHz:
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