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Recent content by Deadleg

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    Mavic Pro Battery Mod

    Yes, that is always the temptation, but not always the best idea! Normally you are with the wind coming home so you need higher groundspeed (which is what you see in the app) for max endurance
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    Mavic Pro Battery Mod

    In my experience the optimum airspeed for max range for a Mavic Pro with double battery config was about 24 mph. This represents the airspeed for minimum battery power consumption. This means that if you are flying into, say a 4 mph headwind you need to reduce the groundspeed to 20 mph, and if...
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    Mavic2 Radio & Antenna Mods

    I have not a 5.8 disconnection yet. Maybe after disconnection it switches back to 2.4. Might try and force disconnection by switching off amp.
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    Mavic2 Radio & Antenna Mods

    I echo your RIP for Beanbubba. He will be sorely missed. I set the M2 RC frequency just before takeoff, as Bean suggested, and it seems to stay there. In my area also 5.8 seems to give better video - lots of hotels with massive wifi systems. I have had some serious dropouts at 3-4 Km using...
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    Mavic2 Radio & Antenna Mods

    I was referring to these tests . . were they Mavic 1?
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    Mavic2 Radio & Antenna Mods

    I will have to watch barometric pressure and RPM more carefully from now on, but living in Tenerife I don't get much cold weather. You were brave going out in a tailwind and turning at 53%. What was batt % on landing?
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    Mavic2 Radio & Antenna Mods

    Nice flight, amazing distance for stock battery. I assume you ran constant speed of 14.8 both ways. Interesting to see you quote air density. Do you know how this effects range?
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    Mavic2 Radio & Antenna Mods

    Going back to your excellent rf power measurements, it was surprising that you found little improvement in fcc over ce. Have you any idea what caused that surprising result? I have just been running some "real world" tests and find an enormous difference between the two. Attached some graphs...
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    Mavic2 Radio & Antenna Mods

    Thanks again. Nice compact antenna. Most of my roof is glass, so I have to use a suction mount. A standard camara mount lets me switch between different antennas for different purposes (long-range, CP, etc). Just fitted internal curtains to improve screen visibility. You think the amp...
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    Mavic2 Radio & Antenna Mods

    Another design question: I want to mount an antenna on the roof of the car, with about 3m cable length. Currently testing different antenna/cable combinations. Does anyone have experience with this? I'm wondering if it's best to put the amp right next to the antenna, or leave it with the RC...
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    Mavic2 Radio & Antenna Mods

    Thanks again . . sorry if I'm going over old ground. Lots to read. I saw your test results on the Mav 2 radio, and it seems that forced boost is a good idea, if I can make it work. No need for attenuator, and stronger return signal from bird. I also gather from your tests that, like the M1...
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    Mavic2 Radio & Antenna Mods

    So the antennas look safe, but what about amp input levels? My Sunhans 3W have an input spec of 0-20 dBm. Mavic 2 RC spec gives 26 dBm max FCC transmission power. Forced boost could push that up to 32 dBm. Is there a danger of overloading the amp? I like the idea of forced boost, because of...
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    Mavic2 Radio & Antenna Mods

    Many thanks
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    Mavic2 Radio & Antenna Mods

    Can I ask you guys a general question: I notice antennas sometimes quote a maximum input power. For instance, the Aruba antenna that you use, beanbubba, has an input power spec of 6 watts, but you are driving it with a 10 watt amp. Is there any chance of overloading the antenna and causing...
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    open mavic 2 battery

    I forgot to mention the most difficult problem of all! I could not remove the cells from the bottom shell, because the bottom cell is stuck firmly to the shell. I tried taking off one end of the shell and using the spudger to pry the cell off, but it was stuck firm, and there was a risk of...