GepRC Tern-LR40 HD O3 // DJI O3 // GPS // Beeper 

With your long range flying what are you typical long range environments?

@@NickBurnsFPV I live along the Blue Ridge Mountains and a National Park in VA and have some acreage here. So mountain and tree surfing and general exploration flights. Nothing too exciting yet.

hi 192venom, have you become a flat earther yet? If not I suggest viewing the 13 part series _what on earth happened_ in my about to learn how the earth is not a globe

but if u are going to take off the mast, will it be the same as flywoo lr4 in terms of flight characteristics ? What do u suggest, if i want to build my first long range build, try with 4 inch for an year and jump to 7 inch (if so, then which frame is absolute beast of a deal ). ?

@@rainbowrunner1136 I am a huge fan of ultralight 5 inch for long range. Aim for sub250 before the battery and you can fly for 20 minutes on an 18650 pack. Make sure you can fit a GPS somewhere but almost any ultralight 5 in frame will work

LoL I have gone all out with a 3” but a deadcat 4” is definitely pushing it! 😜 Mind you I’ll test and tune my 4-6” freestyle builds in the house, but not all out rip, that just sounds like a slippery slope to spackling and painting the walls. 😜

Yea, not a good idea for me to stay in good standing with the family. next video though

​@@NickBurnsFPVHallo. Can i fly this Drone with DJI Googles V2 and the DJI remote Controller 2? Greatings from Germany...

@@dortmunder27xxx yes, get the pnp/O3 version

Agreed, but I'd aim to 3v... Because when you get to 2.8v you don't have much space anymore, you need to land or it's going to drop.

@MCsCreations Indeed, I too usually land a LiIon at 3.2v unless I required more. I keep that last .4v per cell as my "Emergency Fuel "

I tink you can easy go to 2.8, the most ones can go to 2.5v

Since 110g low C 1100mAh lipo been released, 200g li-ion 4S pack make no sense on such a light quad.

W comment

It’s fun and exciting, you’ll make memories for when your to old to do anything but sit and drool. you can’t take cash with you so have fun now. What else can I say? Just fly!

FPV is a joyous escape. Escape out body and mind, all discomfort and any negative thoughts or feelings leave while flying. Only joy in those moments.

I believe they should all have the same size, but I can't be 100% certain. Watch for excessive outer dimensions as that could get in the way of seating properly.

yea, I can't say the current position works better than if it were placed on the top in the same location as the gps mount.

Compass ideally needs ~10cm clearance from electromagnetic interference. My 10" will yaw +30°(throttle dependent) while holding original heading when gps/compass is mounted directly on frame. On a mast, she'll fly true. This only really matters in autonomous flight where you're trying to record something. For GPS rescue, who cares if its looking left, as long as its coming home.

@@dr0n3droid Very true!

I wonder if dji has some sort of gps preload they put on all or based on region. This is about all I can think of to speed up the gps lock process...but I am far from well informed on gps.

There could be a tip or other way to think of it, but really judging space comes down to having a clear image in the googles and experience. Flying this one I miss judged a few lines but noticed my mistake and made a last second adjustment to avoid a crash.

long range drones are not durable. I don't suggest using it for anything more than experienced slow flat flight

Then probably a build with a 3.5" would be more suitable for me

all lithium ion packs?

I have the same 3000 mah pack with my LR 4 and went down to near 2.5V (about 2.6V) no problem. Of course there is a lot of sag at that point and the battery gets pretty warm, but plenty of energy left. Pretty sure the same applies to all Li-Ion batteries.

GPS on the types of drones you would see on my channel do not hold it in a hover, gps is used for recovery/return to home on video or control failure. I am not aware of the avata 2 controller compatibility.

Hey, thank you so much😂

for adding a aditional 4k cam

I'll fly mine down to 2.8V. You can go down to 2.5V but it's not worth the danger IMO. Once you hit 2.8V voltage starts to drop off FAST so I land at 2.8V

xt30

Exactly, I thought it important to state subsequent plugins would be fast for those that might not have experience with GPS.

hi phiveone, do you know how does a GPS module get it's time synchronized? Because if I comprehended right, the satellites send a signal with their position(coordinates/location above earth) and exact time of transmission, and the receiver receives this signal and compares the time of transmission to the current time to calculate how far the satellite is(the more time difference the more far the satellite is, and vice versa), but if the receiver doesn't have synchronized time how can it know how long it took for the signal from the satellite to be received?! Also I have another question, how can a satellite that's moving know it's own position over earth(coordinates)? Wouldn't the satellite need to use a fixed reference on ground to know it's position? Also how does a warm or hot start help a GPS module get a lock faster? Because between the first cold start and later having a warm or hot start the satellites the module already has in it's memory could have traveled so far they are out of sight so it would then be a cold start again. -- People say that if you want to have a GPS lock faster when you need it you should first turn on your GPS(at home for example) for it to go through a cold start which takes the longest time to obtain a lock and then with the GPS unit's small battery it remembers certain information for a certain period of time, information like it's last location, satellites it discovered, and synchronized time. And later when you are out in the field and turn the unit on again it will go through a so called warm or hot start so it will get a lock faster. I think that would make sense if the GPS satellites were stationary, but I don't get how it works because allegedly GPS satellites are constantly moving(they are not geostationary), so when you went through a cold start and say 6 hours later turn on the unit again and have a warm or hot start, the satellites the module already has in it's memory could have traveled so far they are out of sight(behind the alleged globe) so shouldn't it then kind of be a cold start again? At least from the aspect that the satellites it remembered are not visible anymore. What do you think?

@@flat-earther The orbits of GPS satellites are precisely controlled and known ahead of time, before the satellite is even launched. They can calculate the atmospheric drag and any other factors that would alter the orbit and adjust for those. Even if it wasn't done that way, you'd still be able to have a network of fixed ground stations and then reverse engineer the satellite location based on where they say the ground station is located. As far as memory, if it remembers a satellite that it can no longer see, then it just drops that satellite. Even though it can connect faster with the memory, that doesn't mean it still doesn't receive the GPS signal. Yes, if you wait enough time for every single satellite to be out of range, then it will act like a cold start. Nothing weird or unexpected about that.

No I have not flown it more. I don't suspect i would fly this one more except for special circumstances.

@@NickBurnsFPV because is not good? I’m asking because I’m looking to buy one and I was thinking on that one so I wanted an unbiased opinion

@@CarlosRodriguez-vg2ob No, mainly as I don't go out and fly big open spaces or long range. I fly as in this video my back yard, I have many that I can fly in this space and don't need a large 4inch proped drone to have fun in the back yard.

I don't think I have had the LR4. Sorry I don't cover every long range quad as I don't fly long range.

ah, yes we need more weight drop. They did use thicker carbon on the arms than i expected, going with a 'lite' O3 will also drop about 10 grams.

Man the explorer lr4 was so long ago I really can't remember anything about it. I would have to expect with the lessons we continually learn the new LR40 would be more advisable to purchase.

@NickBurnsFPV thanks for the reply! I ordered the Geprc Tern last night! Will you be doing more videos on it? Would like to see more! I still need to decide on the radio which I think I've decided the radiomaster pocket as I value the compact size. And debating which dji goggles! Thanks!

@@Huntmx24I don't have more plans for the LR40, there haven't been two many question that would facilitate a video. As for the goggles I would always suggest going with the latest available in the case of DJI. DJI doesn't have a long track record of backwards compatibility. The V1 goggles already don't work with the DJI O3.

@NickBurnsFPV which would you chose the goggles 2 or the integra? I like that integra has the battery in the headband and it's a little cheaper. I'd be interested in seeing how well the tern flys with the 3000mah pack doing lite freestyle. Maybe it's to heavy for flips and stuff. I dunno.

@@Huntmx24 I don't have the integra version, but I would go with those as they are newer and more likely to have longer backwards compatibility.

I have worked in IT since college back in the 90s.

Seems to be a running theme here. Thank you all for the li on battery information.

What crap are they pulling?

@@mwhizzler476he might be referring to the $30/quad incentive BNF manufacturers are currently getting to exclusively install O3 units. It was supposed to be a price drop for the community, but they spun it to something in their favour. Which honestly with the way recent sales have been and the sanctions, it’s perfectly understandable. I work adjacent to DJI so I’m not the most objective, but I do know most of the supply chain, parts inventories and shipping things, especially in the FPV niche. Even though I got rid of my O3 stuff last December, and primarily fly HDZero (and a bit of Avatar). I’m excited to get O4 the end of next year as it has addressed all of the issues I had with O3. I hope that was holistic enough for you to understand where I stand.

The monopoly, I sent geprc a message to ask why this was not in walksnail and they said because of the pressure from DJI@@mwhizzler476

I did not pay for this quad. 90% of the items on the channel were sent by the manufacturer for review.

@@NickBurnsFPV thanks for your reply I appreciate it. wow. I didn't recall you mentioning that in the video. do you think it's a good idea to disclose that the seller gave it to you for free in your video? do you think that means you are a shill? do you think it's a biased review when a seller paid or gave a thing for free for someone to make a review on?

@@flat-earther I have mentioned it in many reviews over the years. To your questions those are not something for me to answer, that is up to the viewer. I don't often get the question of if I paid for it or not, as I am pretty sure in the product review space (FPV or otherwise) it is pretty well known to most.

People don’t get ethics, so one has to assume all YT “reviews” are actually paid commercials. 😢

I agree, and I am hearing rumors on the "why" but nothing I can say with any certainty.

@@NickBurnsFPV Oh geprc told me because of DJI pressure, when I messaged their support to ask. Something really needs to be done, is that not against fair competition rules?

@@Euwanh85 I am not sure there are anti competitive rules in business in China.

Hello 👋