1929-Style 20 Meter Transmitter

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  • Опубликовано: 3 окт 2024

Комментарии • 56

  • @VE2ZAZ
    @VE2ZAZ 10 месяцев назад +5

    Heard you on 20M CW Sunday in the Ottawa area. You sure were chirping and drifting a lot. But it worked! Tried to call you but lost you due to RTTY over you. Thanks for the nice video. 73.

    • @MIKROWAVE1
      @MIKROWAVE1  10 месяцев назад +1

      I worked on the thing this week and she is a bit tamer now.

  • @genetomblin2883
    @genetomblin2883 10 месяцев назад +5

    Thank you ! Quite a challenge. I am a former ship RO. On more than one occasion I worked a coast station in Jamaica that I suspect was using a power oscillator transmitter as his frequency stability was determined by wind velocity on the island. It was always interesting to send ETA messages to Port Antonio via this station. Power oscillator transmitters were once common for life boat stations. Spark transmitters were also legal in life boats for many years and would not doubt be an advantage is generating an attention in a distress situation. Some of the old door knob capacitors would have been nice in your rig. And yes I have used transmitters with door knob caps in them. When you are looking a HT in the 2 to 4 KV range big ceramic caps are or were the norm. Now that ROs are on the beach permanently 500 and 1000 watt MF and HF CW transmitters at sea are a thing of the past. Coast station KLC in Galveston Texas ran 20 KW on 500Khz. Solid copy was the norm for all of the Caribbean via KLC .

    • @Capecodham
      @Capecodham 10 месяцев назад

      RO?

    • @buildstoys
      @buildstoys 10 месяцев назад

      Radio Operator

    • @Capecodham
      @Capecodham 10 месяцев назад

      @@buildstoys I wonder what he did with the time he saved not typing adio perator?

    • @MIKROWAVE1
      @MIKROWAVE1  10 месяцев назад

      For you new guys - RO is Radio Operator.

    • @Capecodham
      @Capecodham 10 месяцев назад

      I am a very old guy and never heard the term RO. I find that some that use these trade terms, if that what RO is are bragging how hip and cool, they are.@@MIKROWAVE1

  • @RonaldSchmid-xo8xs
    @RonaldSchmid-xo8xs 2 месяца назад

    Absolutely fascinating.

  • @Guieno
    @Guieno 10 месяцев назад +2

    Oh! Fantastic! Very warm! Great work.

    • @MIKROWAVE1
      @MIKROWAVE1  10 месяцев назад

      Yes the warm glow of old valves!

  • @dougyintheshed4288
    @dougyintheshed4288 10 месяцев назад

    Great video, as a lapsed ham is reignited my interest. Thanks

  • @JCWise-sf9ww
    @JCWise-sf9ww 10 месяцев назад +1

    A lot of satisfaction building that old style transmitter and making contacts with it.

  • @jimgiordano8218
    @jimgiordano8218 10 месяцев назад +1

    Cool build and it works!

    • @MIKROWAVE1
      @MIKROWAVE1  10 месяцев назад

      The great thing about the Hartley Oscillator is that is pretty much has to work, no matter the device. Spock would like it, because it would prove to be a reality check if it did not work.

  • @gretalaube91
    @gretalaube91 10 месяцев назад +5

    I love your builds! I hunt for chirpy wobbly, QRP signals anyways, because I'm wondering if it's homebrew. I also get harassed when my old FT-102's a couple hz off by the GPSDO SDR guys. I imagine you may be up for some serious roasting with your build. Fortunately most SDR GPSDO'ers don't hang out on CW. Old good power tube? That's probably a hard find. I only have a couple UV201's from the 20's. Not much power there.

    • @MIKROWAVE1
      @MIKROWAVE1  10 месяцев назад

      They watch the waterfall and assume it is some new digital chirp modulation scheme!

  • @Tom-W7TMD
    @Tom-W7TMD 10 месяцев назад

    super cool!

  • @Steve-GM0HUU
    @Steve-GM0HUU 10 месяцев назад +2

    👍Excellent Mike and well done. Antenna movement changing load impedance and shifting frequency - we don't have that problem on modern rigs 😂.... lf I hear Dirty Drifty Chirpy (DDC) CQs, I always try to reply as I reckon it's probably someone with a homebrew set.
    I remember years ago it was quite common to hear CW that was a bit DDC from the old Eastern Block countries.

    • @Capecodham
      @Capecodham 10 месяцев назад

      DDC?

    • @Steve-GM0HUU
      @Steve-GM0HUU 10 месяцев назад

      @@Capecodham DDC - Dirty Drifty Chirpy.

    • @Capecodham
      @Capecodham 10 месяцев назад

      @@Steve-GM0HUU What did you do with the time you saved not being clear and not typing irty rifty hirpy?

    • @Steve-GM0HUU
      @Steve-GM0HUU 10 месяцев назад

      @@Capecodham I probably used the time to log some more FT8 kewsos. I have edited my initial comment to clarify. So, I didn't really save any time. Lesson learned, thank you.

    • @Capecodham
      @Capecodham 10 месяцев назад

      @@Steve-GM0HUU Do you realize the word contacts has only one more letter than kewsos and the world understands that word, contacts?

  • @tobyhaynes-vs6pn
    @tobyhaynes-vs6pn 10 месяцев назад

    I worked you on 20m Saturday, with my MOPA transmitter with two type 45 tubes. Your signal was good on the West Coast, more stable than most of the 1929 signals on 20m. VE7CNF.

    • @MIKROWAVE1
      @MIKROWAVE1  10 месяцев назад

      Toby, you were my longest contact. Nice signal and MOPA is the way to go. Doing it with a Hartley is tough.

  • @davidportch8837
    @davidportch8837 10 месяцев назад

    wonderful Mike - really enjoyed this...

  • @ktheis1
    @ktheis1 10 месяцев назад +1

    Since my novice receiver was a used HR-10, I got used to a wide receiver bandwidth. Even with a newer receiver I still prefer 2kc bandwidths. Drifting isn't a problem. If I hear a chirpy, drifty cw signal I pounce since I'm always assured of an interesting chat. Thanks for the video!

    • @MIKROWAVE1
      @MIKROWAVE1  10 месяцев назад

      We casual CW guys who enjoy the vintage gear always like the wider bandwidths, letting our brain sort it all out! How are you supposed to hear a guy running a QRP rig 900 Hz away if you have a 400 Hz filter inline?

  • @pasixty6510
    @pasixty6510 10 месяцев назад

    This is a wonderful device, that you built over the years. I love it. All that chirping and drifting, I believe, was the sound of a 1929 pioneer 20m operator, most times probably a bit worse… And…Wasn’t that a lovely QSO??!! Thanks for this great video!

  • @jerryuhte1284
    @jerryuhte1284 10 месяцев назад +1

    Good stuff Mike, every year I say I need to try this, but ! I will listen for your sig ,73 , K9UT

  • @jerryshore8374
    @jerryshore8374 10 месяцев назад

    Thanks for entertaining and inspiring us. I replaced caps and cigarette residue in /on an SP600 this summer. More work than it sounds like. I plan to put an ARC5 TX on the air following your videos. Maybe a 6Meter convertor project 60s style?

    • @MIKROWAVE1
      @MIKROWAVE1  10 месяцев назад

      We need some 6M action like in the old days!

  • @souta95
    @souta95 10 месяцев назад

    A homebrew guy I know likes using bread pans for a chassis base.
    He built a 1920's style superhet receiver from scratch... Of course that needed a bit more than a bread pan, but the battery eliminator for it used one.

    • @MIKROWAVE1
      @MIKROWAVE1  10 месяцев назад

      Yeah RCA and Armstrong had the patent that strapped all of the manufacturers to a licensing agreement if they were lucky enough to get one and only around 1929 for the latecomers. But the hams could make them from the very start.

  • @clytle374
    @clytle374 10 месяцев назад

    Very neat stuff. I need to learn CW. Been rebuilding a massive (Hickok 209A) VTVM recently thats been on my oist for over a year and haven't been playing with radios. Also been on some digital projects, but need to get back to radios

    • @MIKROWAVE1
      @MIKROWAVE1  10 месяцев назад +1

      Bigger is always better. a 100 mW single transistor oscillator transmitter might need a full sized rack cabinet for airflow.

  • @jamescarpenter8311
    @jamescarpenter8311 10 месяцев назад

    With the chirpy output, can the signal be received without a BFO? Could you receive the signal with your shortwave crystal set?

    • @MIKROWAVE1
      @MIKROWAVE1  10 месяцев назад

      Ha good comment. Well the trick here is to use pitifully filtered HV like grandpa did by using a Model T Spark Coil Power Supply! BZZZZZ!

  • @cheesedoodlefeeder
    @cheesedoodlefeeder 10 месяцев назад +1

    Whats with the modern getup? You should have been wearing at least a jacket and tie! Back in the day you would be facing the wouff-hong as a corrective measure....

  • @W1RMD
    @W1RMD 10 месяцев назад

    Cool project! The 211 looks a lot like the 805 tube I have. But, did you pronounce ARRL correctly? Or is it "A" double R L? Or....eh? double arrrrr el? Maybe you can become a pirate in the open waters contacting Burt as your only line of safety using nothing but a spark gap transmitter and a cat's whisker detector receiver as you're going down. Great looking project, and interesting as always! 73's.

    • @MIKROWAVE1
      @MIKROWAVE1  10 месяцев назад +1

      HAAARRR L It's a pirate organization.

  • @ornithopterindia
    @ornithopterindia 10 месяцев назад

    👍

    • @MIKROWAVE1
      @MIKROWAVE1  10 месяцев назад

      Thanks for watching!

  • @DAVIDGREGORYKERR
    @DAVIDGREGORYKERR 10 месяцев назад

    Is it a 3V Heater type vacuum tube if so what about getting another and building a Buttlar Oscillator.

    • @MIKROWAVE1
      @MIKROWAVE1  10 месяцев назад

      David, this archaic monster likes 10VAC at a couple of Amps, but it lights up so pretty.

  • @garypoland5288
    @garypoland5288 10 месяцев назад

    Mike where did you find a schematic for a Hartley using a 27 tube, I have never found one. Thanks for the great video. Gary W8PU

    • @MIKROWAVE1
      @MIKROWAVE1  10 месяцев назад

      OK I'll do a build video.

  • @G7VFY
    @G7VFY 10 месяцев назад +1

    Not as desirable as the 300b! $1500 used to be the price for a 'boxed' new pair.

    • @MIKROWAVE1
      @MIKROWAVE1  10 месяцев назад

      They used to be desirable targets on the rifle range here.

  • @SergiuCosminViorel
    @SergiuCosminViorel 10 месяцев назад +1

    sounds bad.

    • @jimw7ry
      @jimw7ry 10 месяцев назад +3

      It sound great to me!!!!
      Aparantly you dont realize what this is. Its simply a high powered oscillator. It is not a transmitter! And the fact that it's a 1920s design.

    • @SergiuCosminViorel
      @SergiuCosminViorel 10 месяцев назад

      @@jimw7ry well, i must appreciate that. just that it is not a pure sine sound

    • @MIKROWAVE1
      @MIKROWAVE1  10 месяцев назад

      Amen. Between the component effects at high frequency, loading of the antenna, and the regulation of the power supply, it is a tough situation!

    • @SergiuCosminViorel
      @SergiuCosminViorel 10 месяцев назад

      @@MIKROWAVE1 do you have insurance?