www.immersionrc.com

Results 1 to 8 of 8

Thread: what is the gain on the rubber ducky that comes with the IRC 700mw 2.4 VTX?

  1. #1
    Navigator slappomatt's Avatar
    Join Date
    Jun 2014
    Location
    San Diego, CA.
    Posts
    576

    what is the gain on the rubber ducky that comes with the IRC 700mw 2.4 VTX?

    I am just wondering if its a 1db or 2db. Thanks

  2. #2
    Navigator Anixs's Avatar
    Join Date
    Mar 2012
    Location
    Edmonton, AB, Canada
    Posts
    334
    ~2dBi as tested on my analyzer.

  3. #3
    FPV Crew Chief kalikraven's Avatar
    Join Date
    Sep 2012
    Location
    Gainesville/Ocala Florida
    Posts
    1,269
    And 2DBI is Decibels Over Isotropic . Dbd is decibels over dipole... http://knowledge.digi.com/articles/K...Decibel-Detail so when you buy an antenna make sure you know what scale they are stating off with!!!

  4. #4
    Navigator Anixs's Avatar
    Join Date
    Mar 2012
    Location
    Edmonton, AB, Canada
    Posts
    334
    For FPV flying, the standard rubber-ducky sleeve dipole is excellent.

    If you need better range, you should increase your antenna gain on the ground. I use a 14dBi patch (linear) and I'm good to 15km or so. And the rubber ducky that comes with the video transmitter.

  5. #5
    Navigator slappomatt's Avatar
    Join Date
    Jun 2014
    Location
    San Diego, CA.
    Posts
    576
    So far my personal best is 10.6 miles with a IBcrazy 3 lobe clover and a pepperbox on 2.4 with a TBS GS. I have just bought a 16DB linear sectional patch ( 90x8 degree radiation) to see if I can best that. doing some calculations but just was wondering what the gain was on the stock rubber ducky.

    Does anyone make a V dipole for 2.4?

  6. #6
    Navigator slappomatt's Avatar
    Join Date
    Jun 2014
    Location
    San Diego, CA.
    Posts
    576
    A little off topic in my own thread but has anyone tested the TBS ground station against a 2400UNO? TBS claims -86 sensitivity and IRC claims -94 that is a HUGE hard to believe difference.

  7. #7
    FPV Crew Chief kalikraven's Avatar
    Join Date
    Sep 2012
    Location
    Gainesville/Ocala Florida
    Posts
    1,269
    Its ridiculously easy to make a dipole or V antenna. Just google the proper length for the elements and do it.

  8. #8
    Navigator Anixs's Avatar
    Join Date
    Mar 2012
    Location
    Edmonton, AB, Canada
    Posts
    334
    1. Keep the dipole (rubber ducky) on the aircraft
    2. Use linear, not circular, because of better range
    3. Search eBay for a 2.4 "grid" antenna if you want 20dBi+ gain

Similar Threads

  1. No instructions for 700mw VTX
    By serpa4 in forum ImmersionRC
    Replies: 8
    Last Post: 17th September 2014, 01:40 PM
  2. Replies: 2
    Last Post: 28th July 2014, 06:32 PM
  3. 5.8Ghz ImmersionRC video Tx with rubber ducky and Fatshark goggles problem
    By chopper_addict in forum IFR - Video Link Discussion
    Replies: 5
    Last Post: 3rd March 2014, 01:40 PM
  4. Replies: 147
    Last Post: 9th December 2013, 05:43 PM
  5. SPW and Rubber ducky
    By Hockeystud87 in forum IFR - Video Link Discussion
    Replies: 10
    Last Post: 27th April 2013, 01:19 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •