If you are using a 2.4G radio, or you fly with some 2.4G radio gears, don't forget to add a low pass filter to your 0.9G/1.3G vidoe transmitters to cut down the harmonic interference.
This maybe the longest system suitable for FPV, the Tx is only 31g, but give a 1500mw(less) power.
Want to push to your limit, try this system.
One tx with cables,
One Rx with cables.
Two 3dbi stock antennas
1.3G 1500mW Wireless AV transmitter
Audio carrier ware
Unobstructive Effective Range
transmitter,1antenna,TX cable,transmitterï¿½s power source.
For use by licensed Radio Amateurs only in the UK