87. 1st and 2nd IF Amplifiers of Elenco AM Radio

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ความคิดเห็น • 23

  • @td7456
    @td7456 4 ปีที่แล้ว +3

    I just want to tell you, you are an excellent instructor! I took a 2 year EE program in the late 80's. I wish my instructors had your style of instruction! Thanks for the videos!

    • @TheOffsetVolt
      @TheOffsetVolt  4 ปีที่แล้ว

      Wow, thank you! I try to come up with a clear approach to the topic ... sometimes I succeed.

  • @RSuarez66
    @RSuarez66 ปีที่แล้ว

    This is a lost art that not many people know. Thank you!

  • @markrhine5809
    @markrhine5809 3 ปีที่แล้ว +2

    Dear Sir, I have built the am section and is working fine, really didn't understand how each section operated, until I found your video, I must say you have a video that is priceless.I am following all the calculations and procedures, This video is just as good as it gets. Thank you kindly for taking the time to show this. GREAT JOB!!

    • @TheOffsetVolt
      @TheOffsetVolt  3 ปีที่แล้ว

      Thanks Mike. Comments like this keep me going. Thanks for taking the time to watch.

  • @yanickch
    @yanickch 4 ปีที่แล้ว

    I’m speechless... great video. As always

  • @johnkyingilisi4395
    @johnkyingilisi4395 4 ปีที่แล้ว

    Excellent tutorial. Thank you very much.

  • @DaveMcAnulty
    @DaveMcAnulty 4 ปีที่แล้ว

    I really liked this video a lot more than the previous. Is this a safe statement "The three cheap filters are better than one expensive one"

  • @kurchak
    @kurchak 2 ปีที่แล้ว

    I get almost identical measurements as you at every single step, to the millivolt almost, but then at the very end when I disconnect the jumper shorting out the AGC I get about 580 millivolts. I know it's only 220mv away from the .8v ideal, but I was curious why? Could it be that my resistance in the AGC circuit is a bit lower than the reference board at the factory was?
    Thank you! And amazing videos, I'm learning so much from you thank you!

  • @kaustubhponkshe6186
    @kaustubhponkshe6186 2 ปีที่แล้ว

    Can you please make a video on how to design a single-tuned RF amplifier for 27 MHZ ..from start to finish, calculating LC values as well please ?

  • @Wtfinc
    @Wtfinc 9 หลายเดือนก่อน

    Very cool, whats the kit called? Bet its more expensive than im comfortable with

  • @jw228w
    @jw228w 6 หลายเดือนก่อน

    hello
    tried to email a question but email sites seem to freeze. are they working?
    anyway asking about the magic wand used in alignment of antenna and oscillator circuits making the elenco radio.
    thanks
    John

  • @nicksix71
    @nicksix71 3 ปีที่แล้ว

    This is a great, well presented video. Thank you. I do have a question regarding the synchronized filter steps...
    I notice that the connections on the IF coils invert between stages, is this to align the phases?

    • @TheOffsetVolt
      @TheOffsetVolt  3 ปีที่แล้ว +1

      Thanks for your comment and thanks for watching Nick. Inversion has no effect on the signals in this system. However, in the FM radio the demodulator does have a phase reference for comparison so it can work correctly.

    • @wessonadrian2613
      @wessonadrian2613 2 ปีที่แล้ว

      Instablaster...

  • @deltagold9646
    @deltagold9646 4 ปีที่แล้ว

    Hello,
    does the schematic and analysis questions come with the kit ?
    Thank you.

    • @TheOffsetVolt
      @TheOffsetVolt  4 ปีที่แล้ว

      The schematic and a basic explanation are in the assembly manual that comes with the kit.

  • @davidluther3408
    @davidluther3408 4 ปีที่แล้ว

    EXCELLENT PRESENTATION AND,GOOD REVIEW FOR ME.I WOULD STILL LIKE TO KNOW HOW TO CALCULATE THE GAINS AND,IMPUT IMPEDANCES.WHAT STATE AND,DOES THIS VIDEO COME FROM?

    • @TheOffsetVolt
      @TheOffsetVolt  4 ปีที่แล้ว +2

      I am thinking about doing this after I complete the AM radio. It will be a long video but there seems to be some interest. Thanks for watching!

  • @inventorkr1
    @inventorkr1 4 ปีที่แล้ว +1

    Like

  • @worroSfOretsevraH
    @worroSfOretsevraH 3 ปีที่แล้ว

    What is the purpose of R38?

  • @researchandbuild1751
    @researchandbuild1751 3 ปีที่แล้ว

    What is purpose of C36, makes no sense..