samagonviris
Newbie level 5
I'm trying to create a 27 Mhz RF detector with LED output. Can anyone provide me with schematics or give any tips?
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Then it gets a little more complicated.
Google for AD8307 and LM3914, there are some circuits that use those components, that will do what you
need. Stick a tuned circuit and antenna, or a filter in front, for the frequency of interest, otherwise it will pick up signals from a wide bandwidth.
What range are you looking for? A few metres? It doesn't have to be a particularly efficient antenna to pick up RF at close range.
It may work without an antenna.
If you want it for longer range, then the circuit you're looking for is a 27MHz receiver, not a 27MHz RF detector.