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  1. sssaaa

    Transistor

    i have two questions to ask you 1,  Your transmitter`s  oscillator and rf amp works on 2.5 volts? 2,  what is the output of LM2931A on 2.5 volts? thanks
  2. sssaaa

    Good radio

    which brand contain sensitive and good selectivity receiver? from above
  3. sssaaa

    Good radio

    Hi, today i went to market, for buying a good FM radio. but i found many radios, thay have also old japnese brands. like National, Panasonic, Sony, Aiwa, Victor, sanyo i didnt understand which brand to buy. plz help thanks
  4. sssaaa

    Transistor

    sorry i forgot to mention that I m using this preamp with your transmitter http://www.uoguelph.ca/~antoon/circ/preamp.htm and your transmitter is worked when my battery voltage goes down to 2.5 volts It means its oscillator which is connected with voltage regulator IC, and rf amp transistor...
  5. sssaaa

    Transistor

    Hi Audioguru I m using ur FM transmitter you said it will not work on less then 5 volts. it also worked on 2.5volts? why? I m using transistor shaped voltage regulator IC like yours.
  6. sssaaa

    Transistor

    i didnt found  NTE123AP transistor in my city. what transistor i will use in the place of this transistor. thanks
  7. sssaaa

    FM frequency

    I Want to change my FM radio frequency 109-120 MHZ. because i want to tune my FM transmitter in between 109-120 MHZ. this is my question from first to last.
  8. sssaaa

    FM frequency

    http://www.gatago.com/rec/radio/swap/23839865.html
  9. sssaaa

    FM frequency

    i have four turns of coil in my radio receiver. by removing one turn it will happen?
  10. sssaaa

    FM frequency

    I want to tune FM transmitter on that frequency. i think by adjusting coil or variable cap we move FM radio frequency for some MHZ.
  11. sssaaa

    FM frequency

    Plz Reply
  12. sssaaa

    FM frequency

    HI all I want to change my FM radio frequency 109-120 MHZ, will it happen by changing the coil or variable capacitor? and i also want to change my other FM radio frequency to air band 118-136 MHZ what can i do? thanks in advance:)
  13. sssaaa

    Audioguru FM Tx

    hi AN920 and Audioguru :) hi AN920 i like your circuit :) thanks :) but still i have a question.... it will drift its frequency, can i use Audioguru`s circuit in the place of your 100mW circuit. and also i m thinking about using good RF transistors in the place of 2N3904. i think it will do...
  14. sssaaa

    Audioguru FM Tx

    i found many high power transmitter on net but they are all drift fequency or very big circuits (a lot of parts and coils), high voltage and very complicated. i want small & stable circuit like yours but incease power like 500mW or 1W. thanks. plz think about mod-5 ;)
  15. sssaaa

    Audioguru FM Tx

    you know any transistor which i use in the place of 2N3904 which will increse the power?
  16. sssaaa

    Audioguru FM Tx

    Hi Audioguru i want to use your FM Mod-4 on 11 Volts. will it incease the output power to 500mW? thanks:)
  17. sssaaa

    Audioguru FM Tx

    Link http://www.ajpotts.fsnet.co.uk/Circuits.html
  18. sssaaa

    Audioguru FM Tx

    input power?? this is written on its web "This Narrow Band FM VHF transmitter will output approximately 250mW of RF power using a 2N2222 and can operate between 75 and 146MHz"
  19. sssaaa

    Audioguru FM Tx

    circuit
  20. sssaaa

    Audioguru FM Tx

    Hi Sir Audioguru what do you think about this transmitter it is good transmitter or not. its out put is written on its web is 250mW is it right? thanks in advance.
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