tedi@Apple.COM (Ted Ives) (01/02/90)
I'm posting this for a friend (Chris). Please respond to him through me (Ted) at TEDI@APPLE.COM. I am a hobbiest desperately seeking information on how to obtain or build a tiny portable VHF FM audio receiver. In my "research" on the subject, I have obtained hundreds of schematics for receivers of every kind. However, I was surprised to find that the info of was of any help for my little "pet" project. I realize that this is a RIDICULOUSLY simple device but I seem to be getting nowhere fast. Here are my specs: * Freq Range: 150Mhz-216Mhz * Signal: FM audio (mono) 80Khz-20Khz (or as good as possible) * FM Modulation: +/- 15Khz * Dimensions: Smaller than a deck of cards * Power requirements: Able to run 2-4 hours on small batteries I will need to tune to any one of 5 or so frequencies which I already know. Therefore, the device should be crystal controlled. This project is basically a simple VHF FM receiver and I could easily build it myself, if I only had some schematics to work with. I can handle the power supply, amplifiers, antenna and housing. I would be very grateful if anybody could provide me with information/plans or point me in the right direction. I might even be willing to make an extra one for you, depending on how things work out. Please respond by MAIL to TEDI@APPLE.COM or by calling me (Chris) collect at 408 522-8373. Happy Holidays!
tob@cbnewsk.ATT.COM (ted.o.burger) (01/03/90)
In article <37541@apple.Apple.COM>, tedi@Apple.COM (Ted Ives) writes: > > I am a hobbiest desperately seeking information on how to > obtain or build a tiny portable VHF FM audio receiver. In my > "research" on the subject, I have obtained hundreds of > schematics for receivers of every kind. However, I was > surprised to find that the info of was of any help for my little > "pet" project. I realize that this is a RIDICULOUSLY simple > device but I seem to be getting nowhere fast. > Here are my specs: > * Freq Range: 150Mhz-216Mhz > * Signal: FM audio (mono) 80Khz-20Khz (or as good as possible) > * FM Modulation: +/- 15Khz > * Dimensions: Smaller than a deck of cards > * Power requirements: Able to run 2-4 hours on small batteries Radio Shack sells several 'weather radio' receivers. These are in the 160 Mhz area and should be tunable to cover your needs. Ted