Hi Felizardo,
2.4GHz video and anything else on 2.4GHz (telemetry, RC link, whatever) just
doesn't work.
The cheap analogue video transmitter just swamps everything else, even at
10mW.
We are based in the UK, so don't have the luxury of 900MHz.
We typically use 5.8GHz 20mW video, which has a shorter range, with a big
patch antennae groundside.
That way you can use 2.4GHz telemetry & 2.4GHz RC link.
We use GoPros connected via the AV/Out to provide the video, or
Sony/Panasonic cheapie CCD cameras.
Hobbyking video transmitters are fine; in the UK, almost all of the video
transmitters seem to be made in the same factory anyway.
All that differs is the stickers on the casings & the price, often by
several orders of magnitude...
In countries which allow it, I'd be tempted to try 900MHz video for the
increased propagation distance.
Power isn't everything because of inverse square; better investing in really
good aerials/receivers.
If you want to record video on your laptop you'll need a USB video capture
device; we use Pinnacle DVC-100s because we know they work with linux.
Be aware you won't be able to fly via that unless you have a very slow
reacting plane, because of the digitization lag (0.5-1 sec).
If we think we may need emergency flying via video we split the incoming AV
signal and connect a set of video goggles.
Cheers,
Gareth
On Fri, 04 May 2012 18:37:13 +0100, Luiz Flavio Felizardo
<
address@hidden> wrote:
> Hello there everyone.
>
> I have my autonomous UAV set and ready but I would like to add an
> onboard video camera on it and I have some doubts that some of you may
> help me out on this.
>
> First things first, let me introduce what I have avaible and what I
> want to do.
>
> - I simple want a video camera on my airframe and transmite live video
> to my notebook.
>
> - I already bought the following camera:
>
http://www.fpvflying.com/products/10-x-zoom-UAV-%7B47%7D-FPV-camera.ht
> ml
>
> So, my doubt is, what else will I need to do it?
> First thing I thought is a Rx/Tx, I found some at hobby king, but Im
> not sure if it will work with the above camera and I dont know what
> difference does the power make (there a several identical Rx/Tx packs
> with a poor quality camera but with diferent power, going from 100mw
> up to 1500mw).
> The other thing is frequency, there are two options there, one with
> 900Mhz and the other with 2.4Ghz, I heard 900Mhz system do interfere
> and dramasticaly drops the range of 2.4 RC systems (such as mine). But
> I dont know about 2.4Ghz, is it good to use for video transmission, is
> it going to work without problems with my 2.4 RC?
>
> (below follows the link of some Rx/Tx from hobbyKing) ==============
> *Tx/Rx com 900mhz * ==============
> *900MHZ 200mW Tx/Rx & 1/3-inch CCD Camera NTSC US$ 57,92*
>
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=13438
> *900MHZ 800mW Tx/Rx & 1/3-inch CCD Camera NTSC US$ 79,79*
>
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=13442
> *900MHZ 1500mW Tx/Rx & 1/3-inch CCD Camera NTSC US$ 107,99*
>
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=134
> 43
>
> ============== *Tx/Rx com 2.4Ghz* ==============
> *2.4GHZ 1000mW Tx/Rx & 1/3-inch CCD Camera NTSC US$ 99,99*
>
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=134