Welcome to PhantomPilots.com

Sign up for a weekly email of the latest drone news & information

LONG RANGE windsurf Antenna's P3 tested

Discussion in 'Pro/Adv Discussion' started by elie kattar, Jul 10, 2015.

  1. elie kattar

    Joined:
    Jul 3, 2015
    Messages:
    74
    Likes Received:
    53
    Location:
    Beirut
    hey guys, i just used this method to upgrade my Phantom 3 range ridiculously, it works. range test:

    1.5km ---- signal 99%
    2.2km signal 85%

    conclusion: 20% to 25% more strength in signal for my phantom 3 and a strong HD stream no lags. 20150710064256.jpg 20150710064257.jpg

    5 meter away without custom antenna's
    -56DBM

    20150710064252.jpg


    5 meter away with custom antenna's
    31BDM
    20150710064246.jpg

    this is my setup:
     
  2. danjordrone

    Joined:
    May 26, 2015
    Messages:
    207
    Likes Received:
    29
    Im wondering is this not a tuned system and changing things not going to stress RF outputs etc
    Just goto thinking back to radio days with RF and SWR and all that
    Im no expert and yes i have tried this to
    Maybe there are them who know more can shed some light to say if these mods cause things to in the end give up
     
  3. elie kattar

    Joined:
    Jul 3, 2015
    Messages:
    74
    Likes Received:
    53
    Location:
    Beirut
    sorry but i did not get overall what u said thank you for your reply anw
     
  4. N017RW

    Joined:
    May 2, 2014
    Messages:
    6,239
    Likes Received:
    1,613
    Location:
    Palm Beach Co.- FL
    If I may Dan,

    It seems he is curious about the tuned nature of this LightBridge/control system and if the SWR is affected enough to 'reflect' to much energy back into the RF final section (amp).
     
  5. elie kattar

    Joined:
    Jul 3, 2015
    Messages:
    74
    Likes Received:
    53
    Location:
    Beirut
    so your saying that this might damage the system cause its already tuned?
     
  6. N017RW

    Joined:
    May 2, 2014
    Messages:
    6,239
    Likes Received:
    1,613
    Location:
    Palm Beach Co.- FL
    I feel awkward stepping in on his post but I believe that is his question.
    Not so much a statement that it will cause damage here but in some systems reflected energy can be damaging.

    Again, NOT saying this device is capable of causing damage.
     
    elie kattar likes this.
  7. NorPilot

    Joined:
    Jul 5, 2015
    Messages:
    6
    Likes Received:
    6
    image.jpg Phantompilots edition :) Preparing for long range test later today.
     
    snerd, dirkclod and elie kattar like this.
  8. YolevonALLin

    Joined:
    Aug 8, 2014
    Messages:
    389
    Likes Received:
    79
    Like what damage? Melting someone? Burning a hole in the wall? Cancer?

    Sent from my SM-G920V using Tapatalk
     
  9. phantom3menace

    Joined:
    Jul 10, 2015
    Messages:
    208
    Likes Received:
    92
    what app is the OP using? looks pretty handy....
     
  10. N017RW

    Joined:
    May 2, 2014
    Messages:
    6,239
    Likes Received:
    1,613
    Location:
    Palm Beach Co.- FL
    The discussion is likely more academic than a real issue with this low power transmitter.
    However academic discussions can educate and inform those who choose to participate which can be a good side effect of threads going off-topic for a bit.

    The core issue is VSWR created by these passive reflectors. Do the create enough reflectance back into the radio to damage the finals of the transmitter.
     
    dirkclod, AmosMoses and elie kattar like this.
  11. elie kattar

    Joined:
    Jul 3, 2015
    Messages:
    74
    Likes Received:
    53
    Location:
    Beirut
    So i can understand that there is a small chance that the beam concentration back to transmitter could cause some damage to the finals of the transmitter even if you highlighted that its not exactly what you are assuming it is, but in general the theory is practical and can happen.. thx for the insight
     
  12. BenDronePilot

    Joined:
    Dec 7, 2013
    Messages:
    1,204
    Likes Received:
    131
    You don't need to worry about any damage coming to your transmitter by using this style of reflector. It's fine. no worries :)
     
    elie kattar likes this.
  13. BenDronePilot

    Joined:
    Dec 7, 2013
    Messages:
    1,204
    Likes Received:
    131
    Nice job with yours. I was going to post my own thread and such regarding these when I got my own P3 transmitter to demonstrate it on. Though I have a slightly different design in mind that may give slightly more signal boost than the way you have yours setup.
     
    elie kattar likes this.
  14. elie kattar

    Joined:
    Jul 3, 2015
    Messages:
    74
    Likes Received:
    53
    Location:
    Beirut
    Hey thx for your reply basicly why I was concerned more is because someone was so helpful ( bluerider) byexplaining this to me: "A high SWR (standing wave ratio) can certainly damage the final stage in older transmitters, and adding this type of modification can increase the SWR. but the newer (DJI) digital PLL transmitter will not be damaged by anything less than about 5:1, which basically is removing the antenna, if the SWR goes too high it will affect performance though. The SWR is the ratio of reflected power to radiated power, as one goes up the other goes down. I do have both a fieldstrength meter and a VSWR meter, the later of which will not be of use as it is inline coaxial. I am going to make a set of these this weekend and will use the FSM to test radiated RF with, and without, which will give a ball park estimate of effectiveness. It will be interesting" and i am investigating more just to make sure i am on the safe side :) can i ask you how are u so sure that this might not affect the transmitter? And thx alot
     
  15. Morphious

    Joined:
    Jun 19, 2015
    Messages:
    205
    Likes Received:
    83
  16. dirkclod

    dirkclod Moderator
    Staff Member

    Joined:
    May 9, 2014
    Messages:
    10,636
    Likes Received:
    5,698
    Location:
    Amory Mississippi
    Is this not the same concept that some tried with the P2 ?
     
  17. biggin

    Joined:
    Aug 6, 2015
    Messages:
    86
    Likes Received:
    3
    Location:
    Chandler, AZ
    I have ordered one as well!!
    I fly to a park in my. Neighborhood that's about a 1/4mile away and I lose everything!!
    Sometimes it takes me 5-10 minutes to get a signal to hit the return home button!!
    I see some of the distance these guys are getting on here and I'm thinking to myself no F N way!!
    So I'm going to try one!!
    Can't remember where I got it on Amazon but it was in STOCK and it's takin me two months to get it!!!
     
  18. D4T_PoM

    Joined:
    Jul 28, 2015
    Messages:
    693
    Likes Received:
    183
    Location:
    London UK
  19. Mityone

    Joined:
    Dec 17, 2015
    Messages:
    125
    Likes Received:
    11
    Location:
    San Jose, CA
    Sorry, for cutting in but, that looks complicated to install and your controller doesn't look like the controller on my Standard...
     
    dirkclod likes this.
  20. dirkclod

    dirkclod Moderator
    Staff Member

    Joined:
    May 9, 2014
    Messages:
    10,636
    Likes Received:
    5,698
    Location:
    Amory Mississippi
    You didn't cut in buddy :) They quit talking 5 month's ago ;)
     
    Mark The Droner likes this.