433 Mhz antennas for 3Dr radios

James Mark Borgaily May 27, 2014 at 7:07am

Hi Everyone, I see all of us had issues on 433 telemetry. I myself used the stock antenna and they performed rather poorly. Try this out, it worked for me. Order from team BlackSheep the LRS receiver antenna 433mhz , then order from Foxtech the transmitter LRS whip antenna cost around 19.90 dollars. You can also find this at hobby king , usually out of stock. Now the results are amazing, set your frequency below the 420mhz band and you will get 90% gain even over a mile away.
Good luck.
Don't waste time with those stock 2.4 they came with.

This reply was deleted.
- Emin Bu May 27, 2014 at 3:33pm
  
  TX
  
  http://team-blacksheep.com/products/product:42
  
  http://www.foxtechfpv.com/super-quality-12-wave-length-433mhz-anten...
  
  RX
  
  http://team-blacksheep.com/products/product:101
  
  http://team-blacksheep.com/products/product:40
  - Euan Ramsay > Emin Bu May 28, 2014 at 4:18am
    
    I use both the TBS 42 and 101 antenna's on mine for about 6 months. Works in my normal range, but not actually done a full range rest yet.
    
    What's the recommended testing approach - the tuning screen in MP, with RSSI and REM_RSSI enabled? At what value does it start to drop out?
    - Christiaan van Vollenstee > Euan Ramsay May 28, 2014 at 4:21am
      
      Trent from my geek show did an awesome episode on range test
      
      http://www.mygeekshow.com/watchmygeekshow/episodes/Episode_128_Maxi...
  - This reply was deleted.
    - Emin Bu May 28, 2014 at 5:19am
      
      Dom, what u need is here
      
      http://www.foxtechfpv.com/rp-sma-to-sma-adapter-p-264.html
      
      http://www.foxtechfpv.com/sma-to-rp-sma-adapter-p-864.html
      
      http://www.foxtechfpv.com/sma-to-smb-adapter-p-1368.html

Quadzimodo May 1, 2014 at 11:46am

DIY pair of 433Mhz half-wave dipoles completed and ready for testing (created based on info found in this thread over at fpvlabs).

Quadzimodo > Quadzimodo May 23, 2014 at 3:49pm

Got a chance to fly with this new antenna setup.

I flew with new dipoles on both ends (with droid planner/nexus 7 ground station) and checked signal strength at height of approximately 50m height and distance of about 200m. With second flight I switched back to the standard 2.4Ghz whip on the ground station (with the dipole remaining on the drone).

Signal with dipoles on both ends - 96%
Signal with dipole on drone and standard whip on the ground station - 27%

Quadzimodo April 27, 2014 at 6:13pm

Hi Guys,

I have been using the RCTimer Telemetry radios with the supplied 2.4Ghz whips.

While the drone is still on the ground I need only move away about 10-metres before loosing signal. Having said that range does improve significantly once i am in the air.

A while back I purchase a selection of antennas from ebay. I have opened each and pictured below. These are supposed to be as follows (from top to bottom)

1. 433Mhz

2. 900Mhz

3. 2.4Ghz

I am yet to get my head properly around antenna element design, and am hoping that someone here might possibly be able to confirm for me whether these are actually designed for the frequencies listed.

Thanks in advance guys.

david teles > Quadzimodo April 28, 2014 at 1:49am

The first one looks like a 433mhz antena, the last looks like a 900mhz but the middle one doesn't look nothing to me, the dipole sleeve ins't even in the correct place
- Quadzimodo > david teles April 28, 2014 at 6:33am
  
  Thank you David.

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433 Mhz antennas for 3Dr radios

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