$3.50 Ham Transceiver Kit

13

Comments

  • Heck, not only do I remember them but I ordered some just last week! I am restoring a 1959 Philco Predicta and had run out.

    Jonathan
    It's amazing to think that commercial products were once made that way! How many of you remember these things?

    wvsn44.jpg

    -Phil

  • ercoerco Posts: 17,679
    edited August 2016 Vote Up0Vote Down
    Jonathan wrote: »
    I am restoring a 1959 Philco Predicta and had run out.

    Jonathan

    Which model? I have a finished 1960 Princess and an unfinished '59 Barberpole.

    Careful, some of those '59s in wooden cases have a live chassis and series filaments totalling 120V right across the mains. Isolation transformer recommended!

    13824226_1.jpg?v=8CF4EE2C4987330

    Philco_Predicta_4654_Television.jpg
    "When you make a thing, a thing that is new, it is so complicated making it that it is bound to be ugly. But those that make it after you, they don’t have to worry about making it. And they can make it pretty, and so everybody can like it when others make it after you."

    - Pablo Picasso
  • erco wrote: »
    Jonathan wrote: »
    I am restoring a 1959 Philco Predicta and had run out.

    Jonathan

    Which model? I have a finished 1960 Princess and an unfinished '59 Barberpole.


    What do you guys use these for, conversation pieces, monitor's? Without a digital tuner and the converters not usually filling the screen, I would think that b&w picture tube is getting pretty soft by now, unless it was used very little or someone is still making them for a niche market. I guess it would give a decent picture after refurbishing with modern components.
  • Had a cable customer using one of these as his main tv...... He made some of the best home made wine and pickles I ever tasted...
    Ken N8SYG
  • MikeDYur wrote: »
    What do you guys use these for, conversation pieces, monitor's? Without a digital tuner and the converters not usually filling the screen, I would think that b&w picture tube is getting pretty soft by now, unless it was used very little or someone is still making them for a niche market. I guess it would give a decent picture after refurbishing with modern components.

    Predictas stop people in their tracks. I've put it on public display a few times and there are always traffic jams. I hide a VCR or DVD player under the table playing old TV B/W TV commercials (thru channel 3) and it blows peoples minds.

    "How does it only pick up old TV channels?"

    Then the old timer guys start seeing the tubes glow and reminisce about having to check all the TV tubes at the tester at the drug store.

    I've gotten lots of offers to rent it out for retro events & stuff, but they are kind of a pain to keep going long term. Parts are rare and expensive. I bust it out for special occasions, but it's a great decorator piece and a conversation starter even turned off sitting high on my shelf. Earthquake bait.

    People make similar-looking modern units. I cringe when I hear that someone gutted one to install a new monitor inside. Those types should be drawn, quartered, and then finally tortured.
    "When you make a thing, a thing that is new, it is so complicated making it that it is bound to be ugly. But those that make it after you, they don’t have to worry about making it. And they can make it pretty, and so everybody can like it when others make it after you."

    - Pablo Picasso
  • ercoerco Posts: 17,679
    edited August 2016 Vote Up0Vote Down
    Back OT for hams/Morse code, etc, I wrote a quickie Morse decoder for a BS2 HW board. First fun project I've had time for in a while! I had just an hour today, so it only does the 26 letters and space. No autospeed yet, just manual timing variable B10 which can be adjusted for faster or slower speed. Overly simple but it's a good start.

    "When you make a thing, a thing that is new, it is so complicated making it that it is bound to be ugly. But those that make it after you, they don’t have to worry about making it. And they can make it pretty, and so everybody can like it when others make it after you."

    - Pablo Picasso
  • MikeDYurMikeDYur Posts: 1,694
    edited August 2016 Vote Up0Vote Down
    erco wrote: »
    Then the old timer guys start seeing the tubes glow and reminisce about having to check all the TV tubes at the tester at the drug store.


    I would love to see how they handled the high voltage anode, I never seen the back of one.
    When I worked in a tv repair shop back in the seventies, I would have to go down to the buildings basement TV boneyard to search for tubes that were either too costly to buy or were not available. It was a creepy long room, lit up with a couple of strings of incandescent lights, and full of large wooden cabinets with round picture tubes. That too was aroma therapy, but in a different way, as the building at one point was a funeral home, and still had a couple of bottles of embalming fluid on a shelf.

  • ercoerco Posts: 17,679
    edited August 2016 Vote Up0Vote Down
    BS2 Morse decoder code (?) attached here. Active-high sensing on P15 input.
    "When you make a thing, a thing that is new, it is so complicated making it that it is bound to be ugly. But those that make it after you, they don’t have to worry about making it. And they can make it pretty, and so everybody can like it when others make it after you."

    - Pablo Picasso
  • There are still tube testers at two crusty old electronic stores near me, thank goodness! Tubes can be bought at the famous W1TRW swap meet near me, too. I learned on our jukebox project that the audiophiles get there early and buy up all the good audio tubes.
    "When you make a thing, a thing that is new, it is so complicated making it that it is bound to be ugly. But those that make it after you, they don’t have to worry about making it. And they can make it pretty, and so everybody can like it when others make it after you."

    - Pablo Picasso
  • Erco, it is a Holiday. And yes, it is a hot chassis, series filament. I do of course work on it with an isolation transformer. Your barber pole is awesome! The only thing I would sell my Holiday for is one of those. I'm always keeping my eye out for one of those within driving distance.

    Mike, I am going to use it to watch TV! It IS a TV, after all. And you haven't lived if you haven't watched the Twilight Zone on a Predicta. I will be using an RF modulator so I won't even have wire going to the set, I'll get it right through the antenna, as intended. It isn't a big deal to get the picture to fit properly.

    To drag this back OT: Has anyone looked at the RF output of these on a pandapater? Just curious how clean they are. I might have to get one to check out. And yes, I am a licensed ham.

    Jonathan
  • MikeDYurMikeDYur Posts: 1,694
    edited August 2016 Vote Up0Vote Down
    Jonathan wrote: »

    Mike, I am going to use it to watch TV! It IS a TV, after all. And you haven't lived if you haven't watched the Twilight Zone on a Predicta.


    Don't forget the series The Outer Limits, It would send chills up my spine to this day, especially watching it on one of those.
  • MikeDYurMikeDYur Posts: 1,694
    edited August 2016 Vote Up0Vote Down
    It was right in there with Twilight Zone for chills.

    https://en.m.wikipedia.org/wiki/The_Outer_Limits_(1963_TV_series)


    EDIT: I do know why I can't get this link specific.
  • Outer limits for sure! Alfred Hitchcock Presents too. Peter Gunn. Lotsa good B&W shows out there . Now I just gotta get the dang thing working...

    We now return you to your regularly scheduled full color programming!
  • The song is even better than Cliff Richards "Congratulations"!

    "When you make a thing, a thing that is new, it is so complicated making it that it is bound to be ugly. But those that make it after you, they don’t have to worry about making it. And they can make it pretty, and so everybody can like it when others make it after you."

    - Pablo Picasso
  • erco wrote: »
    BS2 Morse decoder code (?) attached here. Active-high sensing on P15 input.

    I forgot to say how cool that is.
    Have you tried the Toddler Twinkle Toes yet?


    Infernal Machine
  • Publison wrote: »
    Have you tried the Toddler Twinkle Toes yet?

    Umm, I have not received Twinkle Toes. Not complaining, just stating. Busy busy!

    BTW there was one bug in that Morse Code code on letter M. Revised code attached here.

    Ha, the terms "code" and "Bug" are also used in CW. A "bug" is shown below. All mechanical. The short dits (dots) come from a spring-loaded bouncing contact.



    "When you make a thing, a thing that is new, it is so complicated making it that it is bound to be ugly. But those that make it after you, they don’t have to worry about making it. And they can make it pretty, and so everybody can like it when others make it after you."

    - Pablo Picasso
  • Whit+

    "We keep moving forward, opening new doors, and doing new things, because we're curious and curiosity keeps leading us down new paths." - Walt Disney
  • Nice, Whit+! We'll make a ham out of you yet.

    RST 579 73's OM! K . .. . . . .
    "When you make a thing, a thing that is new, it is so complicated making it that it is bound to be ugly. But those that make it after you, they don’t have to worry about making it. And they can make it pretty, and so everybody can like it when others make it after you."

    - Pablo Picasso
  • Whit wrote: »

    That's about a one stop shop for electronic related PDFs. Thanks for posting Whit.
  • Yawn. Kipkay shows how to send Morse code the LOOOOOOOONNNNNG way around via laser, bluetooth, and smartphone. Strange bedfellows IMO.

    "When you make a thing, a thing that is new, it is so complicated making it that it is bound to be ugly. But those that make it after you, they don’t have to worry about making it. And they can make it pretty, and so everybody can like it when others make it after you."

    - Pablo Picasso
  • MikeDYurMikeDYur Posts: 1,694
    edited August 2016 Vote Up0Vote Down
    Duplicate removed.
  • Here's one for the tube fans.
    1188 x 720 - 144K
  • User NameUser Name Posts: 1,451
    edited August 2016 Vote Up0Vote Down
    FWIW, one of my Pixie boards has become something a little different. A real varactor diode was installed and the potentiometer was replaced with a DAC. The output of the oscillator was applied to a 74AC gate to generate harmonics. The fifth harmonic was selected and then tripled to obtain a 105.3MHz carrier.

    The DAC is driven by a < $1 μC to create a synchronous π/4 DPSK signal. I'm currently using a dollar-store FM receiver to pick up the signal and a Propeller to demodulate the received audio. I don't have a calibrated field strength meter, but I'm reasonably certain I'm within Part 15 rules (250μV/m @ 3m).

    Anyway, it functions as a link to get data from an instrument in the back yard to the basement (which bears a certain resemblance to Herman Muster's basement, btw). Could have been done other ways, but what's the fun in that?
    Platåberget
  • Holy harmonics Batman, that's the long way around! Good on ya.

    Ain't it fun to poke thru the Dollar store and see what you can find? In most cases, the manufacturers lost their shirts. Who would have ever bothered making any of that stuff if they knew it would sell for a dollar, minus overhead, shipping, etc?

    Of course, that loss is readily offset by hoarders like me, who buy lots of things we don't need, just because they're a dollar. Don't thank me, I'm just doing my part to keep the universe in balance.

    "When you make a thing, a thing that is new, it is so complicated making it that it is bound to be ugly. But those that make it after you, they don’t have to worry about making it. And they can make it pretty, and so everybody can like it when others make it after you."

    - Pablo Picasso
  • ercoerco Posts: 17,679
    edited August 2016 Vote Up0Vote Down
    Free Morse decoder app. I tried it and it does work. Tiny program, just 76KB. Works best with no static, such as code practice videos.

    app demo:


    15 WPM code practice (set volume loud)
    http://www.arrl.org/files/file/Morse/Archive/15 WPM/160106_15WPM.mp3
    "When you make a thing, a thing that is new, it is so complicated making it that it is bound to be ugly. But those that make it after you, they don’t have to worry about making it. And they can make it pretty, and so everybody can like it when others make it after you."

    - Pablo Picasso
  • Tiny program, just 76KB

    There was a Morse decoder for the 4 MHz 8080A-based Interact Model R that took less than 8K. Of course it was in 8 bit assembly language, but it worked at least as well as this one seems to.
  • Clearly my Morse decoder program fit inside the Stamps's 2K EEPROM.

    Do I win beer nuts?
    "When you make a thing, a thing that is new, it is so complicated making it that it is bound to be ugly. But those that make it after you, they don’t have to worry about making it. And they can make it pretty, and so everybody can like it when others make it after you."

    - Pablo Picasso
  • Erco, you win THREE INTERNETS. But your prize internets communicate over TCP/morse-code at 5 wpm. The good news is you have unlimited bandwidth on a wireless connection!
  • Unlimited 5 WPM wireless? You fiend!

    Makes 300 baud green screen "20 letters per second" seem high tech, as Hollywood used to think.

    "When you make a thing, a thing that is new, it is so complicated making it that it is bound to be ugly. But those that make it after you, they don’t have to worry about making it. And they can make it pretty, and so everybody can like it when others make it after you."

    - Pablo Picasso
  • $10 for this 3-watt kit: http://www.ebay.com/itm/Forty-9er-3W-HAM-Radio-QRP-CW-Shortwave-Radio-Transmitter-Receiver-Telegraph-/401104224471

    But I should build my original kit first...

    Still need to put up an antenna.

    Meanwhile, I'm watching another outrageous Ebay auction near ending. Already over $200 for a simple band expander kit (unbuilt) for a Heathkit HW-9. Sheesh.

    "When you make a thing, a thing that is new, it is so complicated making it that it is bound to be ugly. But those that make it after you, they don’t have to worry about making it. And they can make it pretty, and so everybody can like it when others make it after you."

    - Pablo Picasso
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