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Thread: What is your coverage for 5.8G 400mW ?

  1. #1

    What is your coverage for 5.8G 400mW ?

    Hi guys, this is how I set up my Boscam TS353 5.8G 400mW with Cloud Spirit Circular Polarized Antenna.The receiver is at the left side of the 450.

    With this set up I only manage to have a good reception for about 500m, after 500m it starts to get distortion and losing signal from the Vtx. I suppose it should have a better performance for a 400mW together with a circular polarized antenna.

    Do you think it is normal to have 500m only coverage ?

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  2. #2
    Navigator piopi0's Avatar
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    Were you testing the range in an open area? 5.8Ghz easily gets blocked by trees etc. seriously I have been able to loose range in less than 50 meters behind my house but have been able to reach 2km no problem in the air. Also make sure you have matching sma connectors on the transmitter and receiver.

  3. #3
    I tested the range by flying straight up in the open air without any tree or building in between and yet getting anything greater than 700m. Flying in open space, is flying in straight line considered as open space ?

  4. #4
    Navigator piopi0's Avatar
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    From your reply I have gathered that you flew straight up above yourself. You will loose range using Circularly polarized antennas due to the multi-pathing effect. you should not be trying to fly as high as possible. you will get better range if you fly out more.

  5. #5
    Quote Originally Posted by piopi0 View Post
    From your reply I have gathered that you flew straight up above yourself. You will loose range using Circularly polarized antennas due to the multi-pathing effect. you should not be trying to fly as high as possible. you will get better range if you fly out more.
    You will loose range using Circularly polarized antennas due to the multi-pathing null effect when flying directly overhead.

  6. #6
    Owhh... I'll do a few more test and make some updates

  7. #7
    Crashing Vitamin J's Avatar
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    You should be able to go about 1.5 miles with those antennas. From your picture it doesn't look like the vtx antenna is perpendicular to the ground, it needs to be pointing straight down. right now it looks like it's slightly at an angle which means the "donut" radiation pattern is skewed.


  8. #8
    Kiwi in Germany whakahere's Avatar
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    you are pointing a null at yourself when flying towards and away. since the quad needs to tilt when flying away the top of the antenna will hurt your range.
    Whaka's Tinkerings blog --> http://fpvlab.com/forums/showthread.php?36623-Whaka-s-Tinkering&p=631753#post631753
    Battle H Virus (home build basher quad tutorial) --> ]http://fpvlab.com/forums/showthread.php?12544-Tutorial-Battle-H-Virus
    Range record on 5.8ghz 200mw 24km --> http://www.rcgroups.com/forums/showthread.php?t=1441664

    The one thing I know how to do well with FPV - crash. All in a day of fun!
    I believe landing is a full body experience .... I do my best to aim for your body.

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