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Old Dec 18, 2014, 07:22 AM
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Joined Jun 2006
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Thanks for your input guys.The schematics are quite clear now.The rf module is advertised 3-12v .Here is the schematic again with the power to the board and rf module on vin pin. I understand the capacitors are optional,right?

the rf module specs say the output is proportional to the power.

One more question .Can a headphone or speaker be directly connected to the rx . or it requires an amplifier.?
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Last edited by Jonybravo; Dec 18, 2014 at 07:28 AM.
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Old Dec 18, 2014, 02:17 PM
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Norway, Vestfold, Larvik
Joined Jun 2012
54 Posts
I think it is too weak even for headphones, but you may try it. I built a small amplifier using a LM386 for this, it works but I think it has problems with some HF-loop.
Range is not very good with the modules I got, looks the same as yours.
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