Recommandation of 900Mhz & 1.2Ghz equipment for long range flight

A page giving all kind of advice for long range video transmittion : http://www.terranova.net/~winger/RCVideoStore/DragonLink/Flying/VideoSystem/VideoSystem.htm

The writer ackwonledges that many of the transmitters on the market have a real power output much lower than that indicated by the manufacturer (125mW instead of 500mW). Also, from what he tells, transmitter can get hot because of bad impedance match between antenna & the load.

He recommends using this kind of equipment available from hobbywireless.com in the 900Mhz :

900Mhz is also a frequency where receivers are kinda old, and not very sensitive, compared to 1.2Ghz for example.

• Transmitter :  T905 Transmitter 900 MHz 500 mW (above)

• Receiver : R900 - 900MHz High Sensitvity Receiver Standard  (above)

• 5dbi antenna :  AN905 HIGH GAIN WHIP ANTENNA 900Mhz 5dBi

1.2Ghz

http://hobbywireless.com/cart/index.php?main_page=product_info&cPath=10&products_id=100&zenid=7ad59c8ec255d0d65eee7473f5daa55f

http://hobbywireless.com/cart/index.php?main_page=product_info&cPath=9&products_id=102&zenid=7ad59c8ec255d0d65eee7473f5daa55f

http://www.lightinthebox.com/Brand-New-1-2GHz-Outdoor-High-Gain-Yagi-Antenna-with-15dB-Cable-15dB-Max-Gain--ES500-_p118587.html

http://www.l-com.com/item.aspx?id=20248