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Elektor Magazine did a 2M FM receiver a few years ago. They have good
quality PCBs so most of the job is done. The only problem was that the oscillator was free running and tunable. This might not be stable enough. In this case I would suggest a crystal osc for a single frequency, multiplied up. If you want it programmable, you will have to use a PLL circuit, and things start to get a bit harder. Could you try E Bay for an old FM rig and modify it? Richard Edgar wrote in message ... Hello, I'm looking to rig up a cheap way to monitor the local repeater without having to invest in a complete transceiver. I've just gotten into VHF ham radio (HF is more familiar to me). I'm not too strong in making radio receivers, but I made VCO's, so I have some homebrew skills:-) I need a 2m receiver circuit, with good selectivity and stable frequency. I've seen some easy to build circuits with good performance on Motorola IC's, but I can't find that circuit in my country. Well in my country there is a bit difficult to buy any kit or specific parts, so I will do everything from parts I could find at local radio shack store. Any suggestions/help would be greatly appreciated. Thanks, Edgar 73! |
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