I used 7812 and there was slight noise. I returned to one diod instead and everything is ok now.
09:32, 11 April 2025, "Alan G4ZFQ via groups.io" <alan4alan@...>:
On 10/04/2025 18:28, Petrov Sergey via groups.io wrote:
?It generates slight RF noize. Which is annoying.
Do you mean the 7809 is producing RF noise?
If so, then suspect the decoupling capacitors.
A 7809 should be noise-free.
73 Alan G4ZFQ
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