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Recent content by mostafamuslim

  1. M

    help uregently..mixers.. need it fast indead..50Points award

    i want to make a mixer at 80-100MHz discrete components... i tried the IC MC1496 , two discrete transistors mixer ,TA7358 (FM Front end) but all did not work :( can any one help me I want also to know, can the MC1496 work at 100MHz or not? some one i know worked with it but with low...
  2. M

    Need help of UHF circuit design

    i think that the SAW filters isused in the TV so u can use it BUT Idonot know if u can buy it uyou can ask in any electronic store market
  3. M

    Need help of UHF circuit design

    for descrete components u can use s9018(ft=1.1ghz) or 2026 or BFR91(ft=6ghz) npn transistors
  4. M

    How to make this oscillator work at 95Mhz

    Re: oscillator at 95Mhz i used spectruma analyzer to view the results i first used 3904 and it gives 630 MHZ then i replaced it by 9018 then it gave 1.27 Ghz (fundamental)and i couldnot seee the harmonics because the spectrum max was 3 Ghz
  5. M

    How to make this oscillator work at 95Mhz

    Re: oscillator at 95Mhz it is2n3904 and i implemented it (tested it practically) how it gave 1.27GHZ????????????????
  6. M

    Why do we sometimes get the signal from tapped coils?

    Re: tapped coils this is because the impedance of the antenna is 50 or 37(monopole) ohm which is small so that the quality factor of the tank circuit is very small ,,yhe solution to take the o/p from tapped coil and then the impedance of the anteenna will be multipied by the squqreof the...
  7. M

    How to make this oscillator work at 95Mhz

    can this circuit work as an oscillator i simulated it and it worked correctly at 95 Mhz but when i tested it it gives me 1.27Ghz can it be modified to 95Mhz
  8. M

    Need help with building a simple oscillator

    Re: oscillator building i have made the colpitt oscillator but the amplitude was very small i donot know if this because the meausuring equipment is 50 ohms input impedance or itis really small thanks
  9. M

    Need help with building a simple oscillator

    Re: oscillator building the fequency is about 90 MHZ LC oscillator DESCRETE based on BJT thanks
  10. M

    Need help with building a simple oscillator

    oscillator building i want to build asimple but stabl to agood degree oscillator can any one help me.
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