Originally Posted by
eddieC
Your opinion is based on lab tests. I don't fly in a lab.
35 in Europe IIRC. The BMFA recommendation was made after 2.4G phones came out. Again, we're talking real-world experience.
My point is 2.4G is no more 'bulletproof' than the advent of 72 Mhz after 27, PPM, PCM, etc. Each succession was an improvement, but was sometimes a band aid to poor installations. I've known many ace indoor fliers, some sponsored, who had lockouts (not brownouts or failsafe) with early Spectrum 2.4 that locked onto only 2 freqs. Fly near another user also on one of 'your' freqs, and he could knock your bird down. This also happened at Joe Nall a couple years back and was reported here. You'll have to do your own 'search' on that one.
As for '1 amp at full throttle', it's being stepped up to 40,000-80,000+ volts. Voodoo math.
Not that your points aren't valid regarding packets, etc, but the initial discussion was regarding gassers and 2.4. You've even admitted 2-3 times that it's possible. I agree with other system interfering, WiFi in FPV systems, etc.
I fly full-scale and had a client's new avionics 'glass panel' upgrade have issues; GPS and other failures, mainly at start-up. When I called the avionics tech and described what happened, he only asked one question, 'Did you have your cellphone on?' Turns out my cell's 2.4 interfered with the avionics, some of which also use 2.4.
I'm convinced 2.4G is NOT glitch-free. Why then did JR & Spektrum go to frequency-hopping? It's better, but (to me) still not bulletproof.
I dont have a lab. All of my instruments are portable. I can take them to the field if necessary.
I dont know what frequencies the brits use for cell phones. I do know the AMA has never issued a warning not to use cell phone at the field.
At my field there are at times 50 fliers at the field. I can guarantee every one has a cell phone in their pocket. There has never been an incident in the 14 years I have been here.
I worked at Boeing for 20 years. My daughter and son still work there. I know Boeing would never use a garbage channel like our 2.4 for anything. There are plenty of frequencies dedicated for A/C use that they could use. I think your tech is all wet.
My point is our 2.4 is far more bullet proof than 72 using anykind of modulation.
2.4 is not glitch free. There is a thing called multipath but thats another story.
I will not respond to any more of your posts