ElVela

Anyone has a cheap 1.2Ghz wireless camera? (ebay ones) If so, how do you improve the reception distance?

My camera has a piece of cable as antenna. Is it better to increase its lenght?
The receiver comes with a 10 cm antenna aprox. Any ideas on hot to modify it? Have you tried any kind of signal amplificator? The TV signal amplificators only reach about 900Mhz so I think they are useless for 1.2Ghz applications.

Thanks.

HoverDown3K

My Feedback: (2)

You can not change the antenna lenght, there are match to the freq. The best possible things are.

1. Make sure the Camera antenna is streight up in the air, not laying down, use a staw if you have to prop it up.

2. Power the camera using a 9 volt battery the weight is not much, this will give the camera's transmitter 9 volts power not 4.5 or 5volts. this also isolates the camera from the DF circuit board, so there is less chance of interference

3. Make sure the reciever is at least two feet of the gound, I woud say higher is better.

4. have a clear line of site from the transmitter to the reciever.

5. sometime if you have a friend aim the reciever this helps.

Dirk Schooner

I got problems with reception too, got 800mw 1.2Ghz transmitter and seperate CMOS (practice) camera. both need 9v so I power them from a single 9v battery, I have noticed tho that power drains quickly and the wire transmitter antenna needs to be up and away from DF reciever antenna, I had some strange results when it was next to it!

http://www.digithull.com/setup.jpg

Here are my first video efforts:

http://www.digithull.com/movie4.3gp

http://www.digithull.com/movie7.3gp

a still:

http://www.digithull.com/air.jpg

Not upto the standard of the rest of the stuff on herre but at least its a start.

Had all sorts of vibration issues, fixed them only to have ballancing/reception issues.

I am looking into getting a flat pannel reciever antenna to attach to video reiever, like they use for SAVS.

ElVela

I've received a 800mW emmiter like yours. Still untested on DF but but it's a great improvement since my last camera was of 50mW. (signal lost @ 30 meters high or so)

I will work with this new one and post results. My problem now are the vibrations with the standard camera mount.

ElVela

This is my last video with the 1.2GHz 50mW cammera. (Yes, 50mW. Please don't laugh). It has interferences because of the low signal. Vibrations are from the original DF camera mount. The image is also not well focused. I accidentally moved the focus....

Eventually you can see the underground construction site near my house. Aprox altitude 160 ft.
or 50m (aprox double altitude than the 7 floor building seen. Aprox 3m/floor + rooftop = 48m)

[link=http://media.putfile.com/Draganflyer-with-a-bad-50mW-cammera]Video 50mW 160ft[/link]

(Don't worry if it says "connecting..." Just wait. It weights 8,5Mb)

Upcoming videos will be shot with my new 800mW cammera (better signal but the same vibrations )

Sky High

ElVela, I couldn't get your video to play. It errors out each time.

ElVela

The link is

http://media.putfile.com/Draganflyer...d-50mW-cammera

scottslc viewed it perfectly. He's the only one that commented my video fow now.


EDIT: Make sure you have DivX and Xvid codecs