Hi DJO, Great videos
if your flying 1.2/1.3 nowadays and using a 2.4ghz radio you will need to get a filter for the 1.2/1.3 or the harmonics could make you lose control of the plane at greater ranges.
1.2x2=2.4 aka a harmonic could interfere with the 2.4ghz. Its possible you will never get the right conditions to create the harmonic but if you do it will be alike a brown out and all the controls will lock you out.
I am sure you know this with your technician class radio license just reminding you
Gave you a link I want you to do well and a lock out could destroy your plane