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Published on Mar 15, 2011
Here is video from the Hobby King EPP FPV model using the 200mW 900MHz video system and camera for RC model aircraft.
You will note the camera is of poor quality but range is good - apart from a couple of dropouts at about 1-1.3Kms from the launch point.
The flight was terminated when the model flew out of RC range at 1.8Kms, an indication that the 900MHz transmitter is creating noise that is affecting the 2.4GHz RC receiver. By comparison, I have been able to fly the FoxTech 200mW 5.8GHz video system to in excess of 2Kms with no loss of the RC link, using exactly the same RC transmitter/receiver combination.
I have also noticed that the 900MHz transmitter sometimes upsets the GPS connected to the FY21AP OSD and RTL system. I may have to use a low-pass filter to eliminate these undesirable harmonics and noise.
A full review of the HK 200mW and 1500mW video systems will be available on the RCModelReviews website shortly.