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  • VK3ZYZ
    Doug, VK3YMG , pointed this out to me. Squashing the mag Loop feed coils seems to improve things quite a bit.
  • VK3ZYZ
    I have not purchased one of theses but they do look interesting! Mount on a Raspberry Pi 4 and you have a 100mW HF transceiver that is...
  • VK3ZYZ
    VK3ZYZ reacted to VK3YNV's post in the thread Tektronix Collection with Like Like.
    Impressive array....
  • VK3YNV
    Impressive array....
  • VK3ZYZ
    VK3ZYZ replied to the thread Codan 8727 info?.
    The 8727 now has the OLED display installed (on a slant). The code below will compile for OLED or LCD as desired. For a 2x16 LCD, change...
    • Front20210725_01.jpg
    • OLED_Matt_film.jpg
  • VK3ZYZ
    VK3ZYZ replied to the thread Codan 8727 info?.
    I have put some code into an Arduino VFO and am in the process of growing it into the Codan 8727. A resistive network is connected to...
    • BandResistors.png
    • BandResistorsODS.png
    • Codan8727BandSelect2.jpg
    • Codan8727BandSelect1.jpg
  • VK3ZYZ
    VK3ZYZ replied to the thread PCM Hawk Arduino VFO..
    The code now includes a calibration factor. It is nice to have a good frequency counter! Also, the USB/LSB would work if I replaced the...
  • VK3ZYZ
    VK3ZYZ replied to the thread Codan 8727 info?.
    The receiver ran very well on tonight's 80M sked. And I actually did a tx test with whatever managed to squeeze through and it worked...
  • VK3ZYZ
    VK3ZYZ replied to the thread Codan 8727 info?.
    I am still battling with this one, but here is the set with the test VFO running it. No mic TX yet, but otherwise ok.
    • Codan8727_TestVFO_01.jpg
  • VK3ZYZ
    VK3ZYZ replied to the thread Test VFO.
    That sounds like a good idea Bill. I'll give you the bits so you can build one for yourself. I have put another version of the code up...
  • VK3YNV
    VK3YNV reacted to BillC's post in the thread Mechanical filters with Like Like.
    I could make a cuppa with the left over tea leaves!
  • VK3YNV
    VK3YNV replied to the thread Circuit Simulation.
    Some of the nice features in QucsStudio.
    • ComponentDesigner.png
    • TransmissionLine.png
  • VK3YNV
    VK3YNV replied to the thread Circuit Simulation.
    Here is the real device for comparison with the QucsStudio simulation. Don't bother to tell me to clean the bench, you should see the...
    • IMG_4198.JPG
    • IMG_4197.JPG
    • IMG_4196.JPG
  • VK3YNV
    VK3YNV replied to the thread Mechanical filters.
    Nice to see a filter with sharp edges... :)
  • VK3YNV
    VK3YNV reacted to BillC's post in the thread Mechanical filters with Like Like.
    I am trying to work out if I can scale one of these down to vibrate around 455 KHZ for use as an IF filter, might need a bit more...
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