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Old 30th May 2019, 9:21 am   #8
Jon_G4MDC
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Join Date: Nov 2015
Location: Welwyn Garden City, Hertfordshire, UK.
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Default Re: Need a very low power 500Khz working transmitter to send morse code.

Jeremy's 4060 divider method provides the answer to on/off keying without spacer wave for free by using the reset line Pin 12.
An 8.0MHz crystal should produce 500kHz at the first output Q4, Pin7. Use an 8.192MHz crystal instead (also commonly available) for 512kHz output.

Last edited by Jon_G4MDC; 30th May 2019 at 9:30 am.
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