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Mar 25, 2011, 12:53 AM
Registered User
Elcheapo's Avatar
Data

R/C 2.4Ghz pushed to 20km


This is what a Maxi swift loaded with 10Ah and a lot of help from onboard electronics can do:

RVOSD5+FRsky+amplifier+patch, 20km (6 min 14 sec)
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Mar 25, 2011, 01:17 AM
Great Britain
MrBen.'s Avatar
excellent, is that a world record for a 2.4ghz rc system?
Mar 25, 2011, 01:24 AM
Registered User
Daemon's Avatar
How much power in the booster? What gain on the R/C Tx antenna?

ian
Mar 25, 2011, 01:25 AM
It's pronounced Caveman...
Awesome. What patch antenna did you use? Was it
http://www.rangevideo.com/index.php?...1fdb96eb322964
?

Also, I'm curious as to how much you adjusted the antenna during flight. It seems like after 15km your RC went down pretty rapidly, but then at 18km your signal became stronger again. If it is indeed that sensitive to your direction, then I can only imagine how helpful having waypoints would be.
Also, when did you start getting alarms on the built-in telemetry alerts and have you adjusted them?
Last edited by c4v3man; Mar 25, 2011 at 01:40 AM.
Mar 25, 2011, 01:42 AM
Registered User
Elcheapo's Avatar
1Watt booster. I was testing a 10dBi home made antenna. However I tested the RV patch to 10Km with the booster and signal was still strong. Unfortunately I didn't had the signal quality indicator on that test.
Next time i go flying will test the limit of the RV patch. Note that I don't think that it is safe to go so far like I did in this video. Unless you have an autopilot on-board.
Mar 25, 2011, 01:50 AM
Registered User
Elcheapo's Avatar
Quote:
Also, I'm curious as to how much you adjusted the antenna during flight. It seems like after 15km your RC went down pretty rapidly, but then at 18km your signal became stronger again. If it is indeed that sensitive to your direction, then I can only imagine how helpful having waypoints would be.
Also, when did you start getting alarms on the built-in telemetry alerts and have you adjusted them?
I was changing the antenna direction to get some understanding of the radiation lobe of the antenna. One interesting thing I found is that beyond 10km I had better signal if I point the antenna searching the reflection from ground and not pointing the antenna to the airplane.
The FRsky module I use has no telemetry.
Mar 25, 2011, 04:03 AM
Zephyr 66" Blunt
mark hitchman's Avatar
Excellent flight, well done, the batteries were on their last legs at the end there, you could not have timed it better

Mark
Mar 25, 2011, 04:13 AM
Registered User
Alex was always the best
Mar 25, 2011, 06:08 AM
Questionable judgement
bracky72's Avatar
I love to see the engineers get out and fly. Good job showing us how it's done.
Mar 25, 2011, 06:41 AM
Suspended Account
Absolutely awesome Alex, you have to love the Maxi Swift for LR flights.
I love the Landing Gear Down indicator on the OSD is that available for us mortals?
Mar 25, 2011, 06:48 AM
Registered User
Quote:
Originally Posted by Tarro
Absolutely awesome Alex, you have to love the Maxi Swift for LR flights.
I love the Landing Gear Down indicator on the OSD is that available for us mortals?
Yes this is a nice feature!!
Mar 25, 2011, 07:11 AM
my karma ranover my dogma
galaxiex's Avatar
Great video the whole way!

What is the vid setup?
Mar 25, 2011, 08:07 AM
SILURIA / UK
Shikra's Avatar
Nice Job!
Mar 25, 2011, 08:44 AM
Suspended Account
cool video
Mar 25, 2011, 09:36 AM
Registered User
Dr Niceguy's Avatar
Nice video.

what video TX are you using?


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