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  1. Sticky: RMRC linked this thread from their listing of the...

    RMRC linked this thread from their listing of the hoot antenna to explain its origin as a lindenblad. Duno where is the misinformation you speak is. This thread was erased hours after the listing...
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    Looking for an old thread

    There was a thread by Tony from FPVLR here about a high gain CP Omni, seem to have vanished.
    Google found it, but link lead nowhere.
    77854

    -Hugo
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    I'm trying to find my tuto. but I'm afraid it's...

    I'm trying to find my tuto. but I'm afraid it's gone with the old website. While I search trough my backup drives, I ask for help of the community, surely someone saved it...

    -Hugo
  4. There wasn't enough interest to justify 20k+...

    There wasn't enough interest to justify 20k+ spending for the molding so it went on the ice.



    This is exactly that, mount it on the aircraft so the aircraft can track home base, either with its...
  5. We managed 10km with two pharos antenna. Range...

    We managed 10km with two pharos antenna. Range varry a lot with required bandwidth, our case was telemetry + 1080P video. -Hugo
  6. Take a dummy load, it have zero reflected power,...

    Take a dummy load, it have zero reflected power, but how "efficient" an antenna is that? VSWR tell you how well power is transferred to the antenna, but not what the antenna do with it, broadcast or...
  7. VSWR is not really about efficiency but impedance...

    VSWR is not really about efficiency but impedance match. If you want to transfer a maximum of power from a source to a load, they need to have equal impedance. Our received are around 50 ohm so you...
  8. That's because the impedance of a dipole is...

    That's because the impedance of a dipole is 70-75ohm. The inverted V should hit closer.

    -Hugo
  9. 74897 5.8GHz fan dimensions You may use...

    74897

    5.8GHz fan dimensions
    You may use 16.7+10.4+16.7=43.8mm wires and add little legs to solder along the coax.

    -Hugo
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    My take on RF and cancer

    We often hear cell-phone, wi-fi or smart meter give us cancer. I'm sure many of us worry powering our 1W vtx right at our faces.
    Let me explain my view on the subject:

    #1 Cancer is cause by our...
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    I see no audio input on the vtx, but something...

    I see no audio input on the vtx, but something that look like a mic, am I wrong?

    -Hugo
  12. The antenna does not scale that much unless you...

    The antenna does not scale that much unless you scale wire dia. too, which will make for a really thin wire at 5.8.

    The fan/windmill design will be abandoned by us so I will release them to the...
  13. Kickstarter is up! ...

    Kickstarter is up!

    https://www.kickstarter.com/projects/747120157/pharos-smart-antenna-for-drones?ref=nav_search

    -Hugo
  14. That will work, but you loose RTH. -Hugo

    That will work, but you loose RTH.

    -Hugo
  15. The arduino act like a V-tail mixer, one input...

    The arduino act like a V-tail mixer, one input control both motor together and the other control differential.
    The vector then control both motor as if it was a Y connection and a channel on my...
  16. Sure, but you loose diff thrust, which is fun...

    Sure, but you loose diff thrust, which is fun with twins :)

    -Hugo
  17. no way as of now. For my twins, I made a mixer...

    no way as of now. For my twins, I made a mixer with an arduino nano:
    /**
    PPM V-Tail/elevon mixer

    Input pins:
    2: aileron/rudder
    3: elevator

    Output pins:
    9: servo left
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    20MHz on 30p and 40MHz on 60p It use 2x5 MIMO...

    20MHz on 30p and 40MHz on 60p
    It use 2x5 MIMO that yield more bit per Hz.

    -Hugo
  19. On the regular connex, the air units antennas...

    On the regular connex, the air units antennas where taken directly out of a laptop. Dual band PCB dipole as cheap as you can get. -Hugo
  20. Pls, screenshot of the OSD :) -Hugo

    Pls, screenshot of the OSD :)

    -Hugo
  21. In its simplest version the pharos work with the...

    In its simplest version the pharos work with the eagle eye (it have a pwm port and work just like a pan servo) but doe not provide a dynamic home point. A more advanced version have its own...
  22. Pharos antenna, the world's first smart antenna.

    I am proud to introduce you the Pharos antenna.
    In a nutshell, the Pharos is a solid state antenna tracker usable for both ground station and aerial. It is now compatible with pixhawk autopilot and...
  23. Too high impedance can be brought down by adding...

    Too high impedance can be brought down by adding a proper resistor between IN and GRD.
    But too low impedance can't be brought up easily.

    -Hugo
  24. Exactly, so they can break standards and keep...

    Exactly, so they can break standards and keep best compatibility among their equipment.

    -Hugo
  25. Verticals lines means an interference that is in...

    Verticals lines means an interference that is in synch with the video horizontal retrace.
    OSD smearing is bad impedance matching of VTX or display device input.

    Take a DVM and measure the...
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