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UHF tx

Discussion in 'Racer Technical Discussions' started by haris_g, May 24, 2012.

  1. haris_g

    haris_g people can fly

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    May 22, 2012
    athens
    Posted by haris_g, May 24, 2012 #1
    is there any major drawback in using a UHF tx (at 400 - 600 Mhz like this http://fpvhobby.com/103-uhf-a-v-transmitter.html ) combined with a mini analog TV (that I already have) for simple FPV instead of the usual 1.2, 2.4, 5.8Ghz systems?
     
    Last edited by a moderator: May 24, 2012
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  2. DucktileMedia

    DucktileMedia Drone Enthusiast

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    Posted by DucktileMedia, May 24, 2012 #2
    yeah, I want to know the answer to this as well. Seems like it would be a superior frequency for long distance and not needing to be LOS.
     
  3. haris_g

    haris_g people can fly

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    May 22, 2012
    athens
    Posted by haris_g, May 27, 2012 #3
    is there any one in the forum using UHF ( 600 Mhz) Tx and Rx for FPV video signal ?
     
  4. yeehaanow

    yeehaanow Member

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    Posted by yeehaanow, May 27, 2012 #4
    I think the video quality will not be as good as the higher frequencies. But you will have better penetration around objects. Something to think about is if you plan on doing long range fpv and you even get a UHF system for the RC Tx then it would be not good to have video on the same freq band.
    However, that Tx is very low power and you might only get 100 ft. Or less. I would say don't waste your money.
     
  5. haris_g

    haris_g people can fly

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    May 22, 2012
    athens
    Posted by haris_g, May 27, 2012 #5
    thank you for the advise. so I should focus more on a 1.2 or a 5.8 since my RC Tx is a 2.4 , right?
     
  6. yeehaanow

    yeehaanow Member

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    Posted by yeehaanow, May 27, 2012 #6
    Yes. For normal range go with 5.8. For 1.2 you will need a low pass filter so it doesn't interfere with the 2.4 radio.
     
  7. kloner

    kloner Aerial DP

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    Posted by kloner, Jun 1, 2012 #7
  8. DucktileMedia

    DucktileMedia Drone Enthusiast

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    Alameda,CA
    Posted by DucktileMedia, Jun 1, 2012 #8
    anyone have insight on if the new immersion 5.8 600mw tx are any good?
     
  9. kloner

    kloner Aerial DP

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    San Diego
    Posted by kloner, Jun 1, 2012 #9
    I have 2 here, only played with one of them so far. Apparently some of them have a problem with tearing like this.....



    kinda hard to see, but the top of the predator shot thats color shakes back and forth, top 1/8 of the screen and only when i use it with my fatsharks. With the immersion duo it doesn't do it. a small group of us at fpvlab bitched to saunders and he said some airwave tuners are better than others and that it was basically the receivers in the goggles causing the problem. Weird though cause i have an old version and it doesn't have that tearing. They are in stock everywhere now. I got mine from NGC in canada with the tearing feature,,,, the other just got here from future hobbies in cali
     
    Last edited by a moderator: Nov 22, 2014
  10. haris_g

    haris_g people can fly

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    May 22, 2012
    athens
    Posted by haris_g, Jun 1, 2012 #10
    just got one, will let you know how it works for me
     
  11. kloner

    kloner Aerial DP

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    Jan 5, 2012
    San Diego
    Posted by kloner, Jun 1, 2012 #11

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