Build Your Own Cake Pan Ham Radio Transmitter

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  • เผยแพร่เมื่อ 8 พ.ย. 2024

ความคิดเห็น • 36

  • @ernestb.2377
    @ernestb.2377 ปีที่แล้ว +3

    I have enjoyed every minute of your explanation. I really like that you explain the function of every single component, so I can understand it well. I am an EE myself, I can follow the topic well, but have never build something like this. This inspire me to go and build it myself, in a Cake Pan or just on the table, step by step. Nice thing that you can test PSU, RF and AF parts separately. Great video and thank you for making it! 73

  • @m0dad
    @m0dad 2 ปีที่แล้ว +1

    A brilliant video Lain, very well presented and detailed explanation. I love old technology and have recently built an 807 CW breadboard transmitter. I love listening to the homebrew tube (valve) AM nets on 80m here in the UK and hope to build another transmitter soon. Would love to see any future videos with your transmitter on the air making QSOs. Well done. Enjoyed the video. Best wishes from North East England.73 de M0DAD David.

  • @ianliston-smith7921
    @ianliston-smith7921 2 ปีที่แล้ว +1

    A nicely thought out circuit. A scope trace when fully modulated would be interesting, particularly if you include a 100 to 5 kHz frequency sweep and a trapezoidal trace.

    • @iainportalupi
      @iainportalupi  2 ปีที่แล้ว +2

      That’s a good idea, I’ll have to make a follow up video.

  • @HD7100
    @HD7100 ปีที่แล้ว +1

    I really like what you built here and how you built it. W9TOF '73

  • @jackdonkey22
    @jackdonkey22 2 ปีที่แล้ว

    Man i just searched to see if you had any new videos a few days ago. Nice.

  • @W1RMD
    @W1RMD ปีที่แล้ว

    WOW what a great video! I especially love the hand written schematics. None of this EZ EDA stuff. Excellent explanations as well. 73's.

  • @KG5CUO
    @KG5CUO 2 ปีที่แล้ว +2

    Wow great video and well explained how what every step is doing great!

  • @SenadhiNanayakkara-ws8jx
    @SenadhiNanayakkara-ws8jx 7 หลายเดือนก่อน

    Good explanation. Thanks sir.Is it working properly.

  • @ebones6957
    @ebones6957 21 นาทีที่ผ่านมา

    Im curious why you went with an L type tuning output. There is no loading control. Are you going for maximum output so there’s no need for loading?

  • @joeflanagan354
    @joeflanagan354 2 ปีที่แล้ว

    Very unique and great bit of electronic engineering.

  • @jonkirwan525
    @jonkirwan525 ปีที่แล้ว

    I'm most interested in the 6AQ5 oscillator design thoughts. You've provided enough of a teaser. But not enough (to my mind) to use a datasheet and design it. I've noticed what I believe to be a self-bias (grid-leak) of grid 1 (the 47k) but the cathode is directly grounded. So this means it's not operated according to the datasheet (there's a note about this saying 'an adequate cathode bias resistor' is required and it's been my modest experience the note is true enough. This is a unique arrangement that I'm not familiar with, though. So I'd like to know why it's fine to simply ground the cathode in this case.

  • @trentbradford965
    @trentbradford965 2 ปีที่แล้ว

    Thank you!! I've been looking for something like this.

  • @johnmif9808
    @johnmif9808 ปีที่แล้ว

    very good ian i wish you could build me one for cw love the video im 63 from belfast northern ireland and worked with radio all my life but getting old for building stuff with my eyes

  • @neiltan1939
    @neiltan1939 2 ปีที่แล้ว

    Great video, Iain. You did a nice job with the presentation as well as with the construction. What are the other home brew items there in the shack? I operate QRP but use CW. What frequency do you normally operate on, I'd like to hear the home brew AM xmtr on the air. Also, what type of antenna are you using there? I'm using a delta loop. All the best OM. 73 de WA4CHQ

    • @iainportalupi
      @iainportalupi  2 ปีที่แล้ว

      I’m using an end fed antenna cut for 3885 which is where I hang out the most. As for the other homebrew items, I’ve got a 70w AM/CW transmitter, a morse code practice oscillator, and a 30w linear amp for the cake pan transmitter. 73 KB1UGN

  • @Biokemist-o3k
    @Biokemist-o3k 2 ปีที่แล้ว

    Wow this thing is incredible!!!!

  • @W3KW
    @W3KW 11 หลายเดือนก่อน

    If I’m reading your schematic correctly, you have 400 volts DC on your microphone PTT. Yikes. I use optoisolators to remove HV from the keys of my boat anchors. Is there another way using your schematic to key the microphone without keying the B+?

  • @jerrydaugherty3781
    @jerrydaugherty3781 ปีที่แล้ว

    great explanation,

  • @billybaroo7873
    @billybaroo7873 9 หลายเดือนก่อน

    Does anyone know if that 13H choke is just the primary of a single ended output transformer with the secondary disconnected or is it a power supply choke? I don't see it in the video.

    • @iainportalupi
      @iainportalupi  9 หลายเดือนก่อน

      It’s a power supply choke.

    • @billybaroo7873
      @billybaroo7873 9 หลายเดือนก่อน

      Thanks for the reply, the reason I asked as there was a Knight Kit radio broadcaster in the late 50's that used a output transformer but when I looked at the video all I saw was 2 black wires on the underside of your chassis making me think you used a filter choke.@@iainportalupi

    • @iainportalupi
      @iainportalupi  9 หลายเดือนก่อน

      @@billybaroo7873 I don’t see any reason why you couldn’t use one winding on a transformer instead of a power choke. A cheap power transformer is easier to find than a choke.

  • @SenadhiNanayakkara-ws8jx
    @SenadhiNanayakkara-ws8jx 7 หลายเดือนก่อน

    How many km range.

  • @sleeve8651
    @sleeve8651 4 หลายเดือนก่อน

    Made me nervous, when he had his fingers underneath the Pan ! ⚡😖⚡

  • @dxradiohobby8234
    @dxradiohobby8234 ปีที่แล้ว

    interessante!

  • @mokonindyatmoko9175
    @mokonindyatmoko9175 5 หลายเดือนก่อน

    I like your idea ,isnt your wive angry to you 😊😊😊😀😀😀😀😃😃😃

  • @UtahBlender
    @UtahBlender 10 หลายเดือนก่อน

    Tell Tom and K1KBW I said hey. Their freemason cookbook sucks. "If a radio can't kill you, what good is it?" Jon KA1TDQ

  • @yogibear2k220
    @yogibear2k220 2 ปีที่แล้ว

    This is when I wish I didn't have the brains of a gold fish. Oh well, back to PacMan.

    • @iainportalupi
      @iainportalupi  2 ปีที่แล้ว

      PacMan is good.

    • @W1RMD
      @W1RMD ปีที่แล้ว

      Don't be afraid to fail. Just don't electrocute yourself so you live to experiment again. You WILL sacrifice a LOT of components in trade for gaining of knowledge.

  • @sleeve8651
    @sleeve8651 4 หลายเดือนก่อน

    What.....?
    No C.W. ?
    Sacrilegious !

  • @Magnus-qr7lj
    @Magnus-qr7lj 2 หลายเดือนก่อน

    You want to allow adds every two minutes? I am not watching it!