crivoli

audioguru, i appreciate your quick response. This schematic looks a bit more complicated than I would like to build. Are there any stable transmitters that are a little less complicated? Also, Is building a receiver for one of these transmitters very hard? I would like the transmitter to send the audio from the microphone to a receiver and amplify the sounds through an 8 ohm speaker. I have never seen a schematic for a simple receiver. Thanks again

Hey audioguru. Thanks for the reply. Can you send me a copy of your schematic. The one I copied off of says not to use an electrolytic caps, but I don;t have any ceramic that go higher than 550pf, so I substituded other for them. Also, I am not using magnet wire, I am using plain copper wire. I am not sure it will work unless I get the magnet stuff. If I could get a copy of your schematic that would be great. Also, if I use pcb or Veroboard do I have to solder the parts before I can even test it? I am not familiar with those types of boards. Thanks again newb

I have built this simple FM transmitter. http://www.uoguelph.ca/~antoon/circ/fmt1.htm I have attached a picture, sorry it isn't the best picture Is there any other way I can test this without trying to find the transmission on my radio? Thanks

SM2GXN Thanks for the link, but I have been there many times and the only info on Wireless intercoms ends with a broken link that doesnt work. I guess I just need to build a FM transmitter and receiver to get this to work. I was told there are IC's that already handle this. Is this a better way to go? Thanks

Ok, I have the intercom system working! I just want to seperate the microphone to one part of the house and leave the speaker on the other side of the house. What is the most simple way to acheive this? Please help. Thanks

Thanks again audioguru.... One more question.... what exactly is the difference between a FM transmitter and a RF transmitter? Would either work for this project, and would one be a better choice than the other? Thanks

Thanks audioguru. I will look up something like "low power RF transmitter". I believe I saw a schematic for this here: http://www.uoguelph.ca/~antoon/circ/rft1.htm Then I would need a reciever on the speaker end correct? How do I set the frequency given off by the transmitter and set the receiver to receive that same one? Thanks again

I have built an intercom off of the simple 200 GAIN design specified on the datasheet of the LM386 IC. http://cache.national.com/ds/LM/LM386.pdf I have thoughts of trying to get this to be a wireless intercom. This would be for only one microphone to one speaker. I am not sure where to proceed from here. I have read that I would need a RF transmitter, but I am not too familiar with all of this. Does anyone know of any tutorials that would be good to read, or any simple circuits I could look at that could explain how to make this wireless. Thanks -newbie

I switched over to a LM386 design from the datasheet and it works like a charm. I appreciate everyone's advice VERY MUCH!! Thanks again

I am using 1K resistors for Rb, a 1M resistor for R2, a 1K resistor for R1, a 10uF cap as already seen, a .47uF cap for the coupling cap from the mic to the IC, a LM741 IC and a 68uF cap out of the IC to the speaker.... Sorry for not posting the specs

I have built the following circuit but the sound quality is terrible. Any ideas on how to make the sound quiality MUCH better? I am using an electret mic and an 8 ohm speaker. Thanks

The specs of the mic say that Red is V+, White is Output and Black is Ground... Will this work with the schematic since it only shows two hook ups to the mic?

I am trying to build the following circuit: http://www.uoguelph.ca/~antoon/circ/amp2.htm I purchased the electret microphone at Radio Shack: http://www.radioshack.com/product/in...entPage=search This mic has 3 leads; Red, White and Ground. How do I hook up the 3 leads on this circuit since it only shows two connections to the mic? Thanks -new user