160/80m Crystal Radio - Introduction

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  • Опубликовано: 29 окт 2024

Комментарии • 65

  • @helraiser666painkil
    @helraiser666painkil 2 года назад +4

    Your crystal receiver is brilliant and I didn't know that you could tune it down to the 160 and 80 meters that's very impressive and it is very sensitive picking up the CW and SSB signals it sounds really good and you've done a great job of putting it all together as well so well done and I hope you enjoy listening to the amateur radio bands. Stephen M3SNV 73's.

  • @acestudioscouk-Ace-G0ACE
    @acestudioscouk-Ace-G0ACE 2 месяца назад

    This is very impressive, I know crystal sets will work on 80 and 160 but have never seen or heard it before. Thanks!

  • @wa9kzy326
    @wa9kzy326 5 лет назад +7

    Your crystal set seems to have outstanding selectivity. Good job!

  • @brucegordon7248
    @brucegordon7248 8 лет назад +4

    I've built ton's of crystal set's, never realizing that you could actually couple it to a simple hartley oscillator circuit and viola you now have a b.f.o. that's amazing!

  • @WiltshireMan
    @WiltshireMan 12 лет назад +1

    Very impressive for such a simple setup.
    Sandy

  • @dennispeake1877
    @dennispeake1877 8 лет назад

    Good morning Joe, the crystal sets have made there mark in history. Another interesting radio for home brewing, just with a few parts 160\80 awesome. Thanks for sharing.

  • @MickLBrad
    @MickLBrad 11 лет назад

    Very nice!! I attempted this about 40 years ago, but couldn't get it to work. The detector and oscillator worked just fine independently, but just not together. Congratulations to your friend. 73 -- de Mick, WB4LSS

  • @marknesselhaus4376
    @marknesselhaus4376 4 года назад

    I made a very similar receiver for 160 and 80M but not as good looking as yours. It does work quite well for CW and SSB as you say. This video makes me want to dig out the parts and rebuild it again but better :-) For me I found that I not only had to peak the antenna but also add a inline trap for a pesky sw broadcaster.

  • @ys1rs
    @ys1rs 12 лет назад

    Fantastic Joe!
    I love your crystal radio. There is nothing you can not do with it!
    Un abrazo Joe from YS Land.
    73 de Rob.
    YS1RS

    • @johnshaw3174
      @johnshaw3174 7 лет назад

      ost interesting, but U/S without a circuit John.

    • @benyakovkohenn4751
      @benyakovkohenn4751 6 лет назад

      Hi .is nice work but please how much turn you used in coil and diamètre of wire

  • @RadioHamGuy
    @RadioHamGuy 12 лет назад

    Very nice project, good job!

  • @rEdf196
    @rEdf196 9 лет назад +1

    I use a home built 2 tube SW regenerative radio alongside my SW crystal set it works real well just like your home brew BFO.

  • @brucewayne-cave
    @brucewayne-cave 8 лет назад

    Outstanding Job !

  • @daviddennison4201
    @daviddennison4201 3 года назад

    Love it! Thanks

  • @kq6up
    @kq6up 10 лет назад

    The heartly is probably adding to the gain by regeneration. Any oscillator can act as a regenerative receiver. Very nice and stable.

  • @G4HOM
    @G4HOM 12 лет назад

    Nice one Joe, Just goes to show that with a good antenna you don't need much on the end of it.
    73....Fred

  • @denisbeahan5261
    @denisbeahan5261 4 года назад

    Very Excellent, indeed.....🤗 👍

  • @CARL557511
    @CARL557511 12 лет назад +1

    I like it, good job!

  • @NG9D
    @NG9D  12 лет назад +1

    Fred, thanks for your comment. Joe used to be a broadcast radio/TV engineer, and also trained in military RADAR. He has shared a lot of his knowledge with us hams. 73, Lynn NG9D

  • @amateurmange7565
    @amateurmange7565 9 лет назад

    Very nice video.

  • @treky97
    @treky97 11 лет назад +3

    This is really cool. It would be really cool to build. Could you consider doing a how to build video?

  • @joeblow9126
    @joeblow9126 2 года назад

    Heard no3m
    Great op and builder

  • @markbatten5178
    @markbatten5178 10 лет назад +2

    Brilliant!! Can you post the circuit or a link for the vfo you made and exactly how you coupled? for us goofballs. I got the crystal radio downpat and double tuned good litz coils tec. but am astonished that I been missing out on ssb.Nice Nice job sir.

  • @roberthorseman7432
    @roberthorseman7432 Год назад +1

    Very much like a crude direct conversion receiver.

  • @pp5cw
    @pp5cw 9 лет назад

    Can't believe it... Wish I could make one

  • @Cristian-gu1st
    @Cristian-gu1st 5 лет назад +1

    For all of you asking for a schematic, this is a simple direct conversion receiver. Another method to accomplish the same, is the Q-multiplier receiver. vk3ye has tested this type of receiver and has a schematic.
    ruclips.net/video/4ix5gNrJy2E/видео.html

  • @ingussilins6330
    @ingussilins6330 6 лет назад +3

    Iike a direct conversion receiver... If add galena detector and zinc negative resistance oscillator... made receiver without modern semiconductors...

  • @wb5oxq
    @wb5oxq 11 лет назад +1

    I am really surprised that there was enough sensitivity to make that work I know there are simple short wave receivers that have no rf amp but they do have if amplification. Your radio is very interesting. I doubt you can get very high up in the bands though.

  • @kel350
    @kel350 12 лет назад +2

    Hi friend
    Good reception, in reality it is a direct conversion receiver!
    73s de PY7NQ

  • @stevejustin
    @stevejustin 8 лет назад +5

    could you please post the circuits, am very interested. thanks.

    • @MickLBrad
      @MickLBrad 8 лет назад

      Steve Justin Joe K8LKC went SK in January 2016.

    • @Troops-y6h
      @Troops-y6h 7 лет назад

      whats sk m8?

    • @locoman1963
      @locoman1963 7 лет назад +1

      sk is short for silent key.
      which means he must have passed away

    • @MickLBrad
      @MickLBrad 7 лет назад

      deryl Robinson I am sorry for just now noticing your question, but as +locoman1963 stated SK stands for "Silent Key" meaning the Ham operator has passed away and can no longer operate his telegraph, CW, key. I hope this helps.
      73 -- de Mick, WB4LSS

  • @Berghiker
    @Berghiker 4 года назад +1

    How did you make the high q coils?

  • @WA8QFE
    @WA8QFE 10 лет назад

    The paragraph above said a 1N34, but appears to be a European point contact type, adjustable by the black knob on the right side. This is the type I use. Am I correct?
    Lee, WA8QFE

  • @freak55beat
    @freak55beat 8 лет назад

    realy good, great !!!

  • @jorgecarvalho5236
    @jorgecarvalho5236 5 лет назад

    I think a variable capacitor in parallel with the main variable capacitor would greatly improve selectivity.

  • @Kcy101
    @Kcy101 10 лет назад

    Thanks for the video, I wanted to build a Crystal radio for a while, but deff wanted it in the HAM band. ( i have a BFO ) And want to know if you have any specs for building something like this for 40 meters? KD2GXV

  • @chadcastagana9181
    @chadcastagana9181 5 лет назад

    0:20
    1,800 kHz was a Police Dispatch frequency in the 1930's & 40's - - ?
    3:00 I have a Mini-Speaker Amplifier from RADIO SHACK just like that one

  • @m005kennedy
    @m005kennedy 7 лет назад +1

    I would like to have know what he had for an antenna. I assume he had a ham radio quality long 160 meter tunes antenna.

    • @jimmcfall7769
      @jimmcfall7769 5 лет назад

      He said right at the beginning that he was using a 278 foot long wire antenna. I would have to rewatch the video to hear how he set it up. He mentioned using coax with it. Hope this helps.
      73 de K9KXW

  • @MickLBrad
    @MickLBrad 8 лет назад

    Joe, K8LKC, went SK in January 2016.

  • @quasarpulsarspark
    @quasarpulsarspark Год назад

    hello, can you share a schematic ? thank you

  • @pp5cw
    @pp5cw 9 лет назад +1

    HI again,, do you have the schematics ?

  • @kb3svj
    @kb3svj 8 лет назад

    Hi Lynn: For the crystal radio and Hartly JFET oscillator, does K8LKC have a net presence where we could find his designed for the set and the oscillator? Thx. 73 John KB3SVJ

    • @MickLBrad
      @MickLBrad 8 лет назад

      kb3svj Joe K8LKC went SK in January 2016.

    • @kb3svj
      @kb3svj 8 лет назад +1

      Mick: Thanks for the update. Sorry to hear of his passing.

  • @ChadHarzkeKK6DPE
    @ChadHarzkeKK6DPE 11 лет назад

    Do you have or can you make a schematic?? What are the spools on the post in the back??
    THANKS

  • @raypsi1
    @raypsi1 9 лет назад +1

    That's better than my TS850 yea hi hi
    73 OM
    de n8zu

  • @stephenwilliams5201
    @stephenwilliams5201 5 лет назад

    OK looking good. My favorite thing free radio. Have a vfo that I move around to run "am" short wave sets. Even a vfo helps pick signals out "am broad cast radio late nighs. Kinda pushes out co channel noise "Interference ". Verry light power works well. This kinda gives me a chance to get the call sign. Better. Tks for good shoe. De kv4li

  • @monarchham
    @monarchham 12 лет назад

    Hi guys.
    Any chance for a posted schematic of rcvr and oscillator?
    Vy cool video!!!
    72 Herb/WR9H

  • @BluesmanharpVintage
    @BluesmanharpVintage 6 лет назад +2

    Schematic please!!!

  • @miguelangelcorrea4853
    @miguelangelcorrea4853 6 лет назад +1

    Estaria bueno que agregara el circuito del receptor regenerativo para poderlo armar. muchas gracias. CX3BW

    • @jesusochoa4856
      @jesusochoa4856 5 лет назад

      Ya no puede amigo, arriba dice que murio en enero de 2016.

    • @joeblow9126
      @joeblow9126 2 года назад

      QEPD

  • @Alex-nv7cf
    @Alex-nv7cf 5 лет назад

    Direct conversion receiver

  • @allanegleston13
    @allanegleston13 8 лет назад

    lovely. sparks can you make that out sparks . :) 73 de kf6uxj

  • @reese1011
    @reese1011 12 лет назад

    can i have it

  • @allanegleston13
    @allanegleston13 11 лет назад

    like

  • @leiderwanwerreises5698
    @leiderwanwerreises5698 7 лет назад

    é para 40 metros