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Built a FM Receiver

Discussion in 'General Electronics Chat' started by Anonymous, Jul 16, 2002.

  1. Anonymous

    Anonymous New Member

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    Can u guide me how to built FM Receiver? How to tune and what the frequency range? Because i have found circuit for FM Tx but not Rx. Can u help me? i am beginner(from Malaysia) in electronic project..Thank you very much.. Sir
     
  2. elegeek

    elegeek New Member

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    abt fm transmitter reciever

    hi
    i am from india
    building a fm transmitter reciever ckt is very tough bcoz of the complexity
    involved in the tuning.u get readily available transmitter reciever ckts
    in india .u should propably get it at ur place. the problem u r likely to face would be in designing the inductor or should i say making the inductor coil which is a bit complicated and tricky.if u r still bent upon doing it then u can visit boondog.com. u should be able to get sufficient information.
    hope this helps u.
    bye
     
  3. kinjalgp

    kinjalgp Active Member

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    Hi,
    It is easy to construct and FM radio reveiver using newly developed ICs. NO FM radios don't use many inductors. You'll find hardly one or two inductors in those circuits which are of standard value and very easy to get. Philips manufactures FM reveiver IC using which you can construct you own radio with quite a few external components.

    Kinjal
     
  4. dave

    Dave New Member

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  5. craciun

    craciun New Member

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    Try the TDA7000 circuit and PCB from datasheet.
     
  6. HiTech

    HiTech Well-Known Member

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    me bangs my head intentionally against a wall once again!!!:( Is there no relief in sight?

    Quality FM receivers employ many inductors. If all you care about is basically "intercepting" an FM signal then go with the minimal parts designs. If you want good sensitivity, selectivity, and stereo demod. then there's not much getting around having to deal with inductors.
     
  7. audioguru

    audioguru Well-Known Member Most Helpful Member

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    The old Philips TDA7000 IC has not been made for many years. It had extremely poor performance. Some newer one are made today, are surface-mount-only and are made for cheap toys because they also have extremely poor performance.

    I bought an AM-FM clock radio for $1.00. It works extremely poorly but better than the Philips TDA7000 "radio" that I got for free.
     
  8. HiTech

    HiTech Well-Known Member

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    I'll bet you that $1 am/fm clock radio has a number of inductors in it too and has better selectivity than that Phillips chip radio.
     
  9. audioguru

    audioguru Well-Known Member Most Helpful Member

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    Yes it does have inductors, and its selectivity is a little better than the Philips one. I wouldn't be able to make one because the inductors are specially made for the radio and I would needf to buy a minimum of 10,000 of them. The tuning capacitor is also specially made for the radio.
     
  10. Sig239

    Sig239 Member

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    LOL Wow this one came back to life from 2002. Great job craciun. I wonder if he ever got that radio built!
     
  11. HiTech

    HiTech Well-Known Member

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    LOL Sig239 ... I hadn't bothered to notice the original posting dates on these craciun-revived threads so hat's off to your keen observation.
    I'm starting to wonder however, if craciun has just come out of a coma? I'm sitting here laughing out loud, almost uncontrolably.... this is so d@mn hilarious!!! :D:D:D:D:D
     
    Last edited: Aug 18, 2006
  12. audioguru

    audioguru Well-Known Member Most Helpful Member

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    Maybe Craciun was in jail for the last 4 years.
    He has a lot of catching-up to do. :D
     
  13. HiTech

    HiTech Well-Known Member

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    I wonder if he realizes microprocessor chips now clock at 3Ghz, McDonald's now has dual drive-thru lanes, Honda & Toyota offer hybrid technology vehicles, space probes have now landed on distant worlds and asteroids, and a loaf of bread costs $2.00. Perhaps he should change his forum name to Cranium ... it's a better fit!!:rolleyes:

    Oh no! Here comes another bout of uncontrollable laughter ( bent over, with arms under rib cage almost falling out of desk chair on to the floor)
     
    Last edited: Aug 18, 2006
  14. habibullahkhan

    habibullahkhan New Member

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    I am instructure of radio electronics and i want to build an fm transmitter of 1 watt please semd me circuits diagram for this with full details
     
  15. audioguru

    audioguru Well-Known Member Most Helpful Member

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    There are FM stereo transmitter kits available and their schematics are on the internet. Their output is about 100mW but RF amplifier circuits for them are also on the internet.
     
  16. wmmullaney

    wmmullaney New Member

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  17. Hero999

    Hero999 Banned

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    Those circuits are too simple to produce a good quality radio.

    Although the one using valves looks alright you probably won't be able to but the components as they're obsolete.
     

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