Sorry to hear that, although he must share that same contempt becuase he was not promoting it at all, just calling on an old mistake, so...
Their wasn't any need for the harsh words.
R2 is a variable resistor, the other wire is just the third leg that isn't used. R2 would just be volume if you would use this for audio amp. So if R2 was just a 100k resistor that sould be ok(I haven't played with that too much)
And R1 is null ajust, you can hook your volt meter up to the...
It won't go through the op amp at all? I built that circuit and tested it using a 47MHz RC and a 400MHz walkie talkie.
No actually I don't really know what gain-bandwith product means:blushing: . Maybe my ignorance on this is why I don't understand why the LED will flash very fast when the...
Ok no need to get mad.
I though he just said that all he needed it to do was turn on an Led, so all the op amp needs to do is amplifly when it receives a signal.
The LC series tuner will block unwanted frequencys and when the right frequency passes the op amp will amplify and light an led...
Actually I build a circuit that would detect an RC controller, and it did brodcast continuously even when the buttons weren't being pushed.
Although I didn't have it tuned to the frequency of the RC contoller
(47MHz)... when I turned it on, my receiver Led would light up.
This is the RF...
I am thinking of joing up with the army when old enough, although I don't know witch branch would best suit a radio electronics based career. Anyone have any ideas?
Oh I didn't even think about that higher frequency range.
Even though, does maverick99 need a reciever that demodulates an FM or AM signal, or does he simply need something to detect a frequency?
[PLAIN]www.mackrackit.com/djm/LF411%20Reciever.html[/URL]
Here is a simpler AM Reciever that might help. It basicly amplifies the incoming RF through that OP amp. If your transmitter isn't AM then you shouldn't use the low pass filter at the output.
I am not sure how you want it to detect...