NoOneYouKnow
Member
Ok, I'm on a bit of a quest here for a wireless COM system. It's basically for transmitting from a mic in a helmet to a loudspeaker setup in a backpack. I know I could buy a setup, BUT I'd like to be able to reproduce this cheaply for a group.
Anyhow, I figured I'd try and go with a short range FM transmission. Here's what I've built for the Receiver.
**broken link removed**
All I'm getting is static. I have about a 16" antenna, but I'm not picking up anything. I've tweaked the coil and played with the varicap but I can't pick anything up. I'm in a fairly signal populated area so I should atleast get something I would think.
Anyhow, here's the transmitter I'm trying to use.
**broken link removed**
I can't really pick up anything from this. All I've managed to do it create interference on the VHF band. If I'm near a TV, one spot on the varicap causes alot of interference.
Any ideas or suggestions would be more than appreciated. I know they're probably crappy circuits, if workable at all, but I'm just looking for a distance of maybe 3 feet, and quality isn't a concern, as long as it's understandable.
Anyhow, I figured I'd try and go with a short range FM transmission. Here's what I've built for the Receiver.
**broken link removed**
All I'm getting is static. I have about a 16" antenna, but I'm not picking up anything. I've tweaked the coil and played with the varicap but I can't pick anything up. I'm in a fairly signal populated area so I should atleast get something I would think.
Anyhow, here's the transmitter I'm trying to use.
**broken link removed**
I can't really pick up anything from this. All I've managed to do it create interference on the VHF band. If I'm near a TV, one spot on the varicap causes alot of interference.
Any ideas or suggestions would be more than appreciated. I know they're probably crappy circuits, if workable at all, but I'm just looking for a distance of maybe 3 feet, and quality isn't a concern, as long as it's understandable.