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They did pretty good considering they're punching a 2.4Ghz signal through a metal shell.
Easy to talk about a remote antenna on the Rx, but not that easy to implement. If you try to put 2.4Ghz through say 30 feet of RG-58 cable, you're losing at least 10dB of signal strength. Much higher loss in the tiny coax cables of the average 2.4Ghz Rx. And then you still have to figure out where to actually run the antenna to get it outside the plane easily so it's not totally blocked as you move from one side to the other (as they did). I'd have chosen something like a long range UHF control system (such as we use on FPV planes) but they were clearly trying to keep the system as simple as possible. ian |
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Latest blog entry: My 2012 FPV year in Review
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Quote:
In the context of the short "landing" one of the guys in the case plane made a comment that they wouldn't have had a problem if they'd had the faster chase plane. My interpretation there was that they started the initial descent and the 727 started to pull away from the chase plane (risking loss of control) so all they could do was cut the throttle to slow it down a bit and pretty much let it drop where they were (short) instead of flying it under power to the runway. ian |
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Latest blog entry: My 2012 FPV year in Review
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Dave- all they'd need would be a thicket of telephone poles to ding their LE's to really simulate the slope experience.
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Latest blog entry: F-20 update
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Seriously. . . they gambled millions of dollars and four years of prep work on an RC system that was only good for 50 yards?!? Then, to add insult to injury, they ended up using a chase plane that could just BARELY keep up with the 727. Slip out of that 50 yard range and it's all over. This had to be the most egregious newbie error I've ever seen on a project involving numerous scientists / engineers.
I won't even launch my slopers with less than a 75 yard range check. What the hell were they thinking? If 2.4GHz doesn't work, go back to a 72MHz system and use extendable whip antennas on both the Tx and Rx links. Unbelievable. . . Solo |
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United States, CA, Torrance
Joined Oct 2007
19 Posts
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I couldn't agree more!
It would be interesting to hear what the explanation to that. Also, If the range problem was caused by the fact the receiver was mounted inside the plane, why they didn't they just mounted it externally? This is really unbelievable. Quote:
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