One of the suggestions from the 1st "RF in 3D" video was: compare analog with digital video transmission. In this video you will hopefully understand better why DJI (and other digital video transmissions) can look so much better and how they achieve it!
Analog is relativly easy to understand (works like your 1950ties analog TV) although I simplified it: it's not only FM but rather the color part is phased in as well).
Digital on the other hand is quite complex and we need to know a few basic RF principles until we can "understand" the block of radio waves used by DJI and how it works:
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my Hangar: http://goo.gl/QNzck
Filmed with: Sony A7c, OBS Studio (to capture desktop)
Edited with Premiere Pro
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00:00 Intro
01:14 Analog video
02:12 DJI Digital Video
06:22 QAM number = BITRATE!
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#DJIFPV#digital#SpectranV6
If you ever wanted to know how RF signals of popular protocols look like in 3D check out this video made with the Aaronia Spektran V6 (a pro grade RF spektrum analyzer). I was curios how the different protocols achieve their properties (long range?, fast refreshrate / low latency).
There will be more videos of this kind as soon as I get more RXs bound to different protocols (like ELRS for sure). If you want some facts or numbers to be checked - just let me know in the comments!
Greets and happy 2022, Mario
my Findings:TBS CRSF MicroTX:
- 868Race mode 2sec intervall vs 1sec
- as soon as I enter the crossfire setup LUA script, telemetry and 150Hz are enabled
Contents of my review (use chapters!): Installation (not so easy), Latency (high) choppy live video quality, 2.7k video quality samples (with trick for optimal quality)
Weight: 20gr (-10gr for other DJI cam, +5gr for 5vBEC) = 15gr
Live-feed:
- high latency (62ms avg)
- choppy since 11% of the frames are dropped (and doubled)
Power: had to install a BEC (my FC was too small)
Box-contents: ND16 Filter! screws, cables
I'm your guy for HONEST reviews and opinions! If you wanna support this rare idea please check my PATREON: https://bit.ly/2ESMtIO
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►►Runcam SplitHD: https://bit.ly/3EAVZJN
Latency XLS download: https://bit.ly/3qvIgPc
There are a few ways, how we can achieve nice and smooth FPV footage. 4k60fps + stabilization is already butter-smooth out of the box. Problem tho: 60fps footage needs more bitrate than we get from youtube (at least in 1080p) so if you have a lot of moving objects it all degrades into a pixelated mess... (whilst looking nice and crisp before uploading it).
If the fast moving stuff is blurred - it "costs" less bitrate - so we have more bandwidth for the important objects that we want to see crisp! That's why we dial down to 30fps and make each frame a little unsharp. Now we get a smooth look still with good details - aka cinematic look. (and don't get me started on 24fps mistakenly used as cinematic look by many - it just looks jerky if you don't use big camera cranes, dollies or tripods)
In my review of the Freewellgear ND Filters for the DJI Action 2 I also show you a bit about how to use them correctly and what to consider.
Basically:
set ISO to fixed 100-200 and exposure to auto!
BUT: choose the right ND filter (lower number = brigther)
Most flights I can use ND 8 or ND 16 and will be fine. Rarely needed ND32 or even 64 - gotta be very bright and sunny conditions to need those!
Since this will be my last video before Xmas - merry Christmas to you all!
Seasons Greetings, Mario
...many reviews out there - but this one features lots of "cool" winter FPV shots and my honest opinion (spoiler - I like it!). Special test: sharpness comparison in different modes (use index!). (Seasons)greetings, Mario
I tested all those packs 1.6years ago (when new) and now again after a longer periode of usage and (good) care. See the results quite well documented (since I'm an excel data nerd ;)
Claim: 9.63mi / 15.4km
Gain: 9dBi @ 5.8
6.5Dbi @ 2.4
Pol: linear, vertical
Horiz. Beam: 5.8: 55° 2.4:75°
Vert.Beam: 5.8: 65° 2.4:70°
Tested over 30 times out in the desert by flying different designs! Each antenna is hand made. When ordering don't forget to specify the Pilot's name to be engraved.
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ORT: DigieyesV2: 11dBi 2.4/5.8 ? Horiz: 110° V:75°
Review: https://youtu.be/sGScGJl7DUc
I DONT earn money with affiliate links - I'm not a sales guy, here you get HONEST reviews and opinions. If you wanna support me: 👍, sub, 🔔, watch, share or even become a PATRON: https://bit.ly/2ESMtIO (there's early access and behind the scenes stuff over there!)
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►Test data as XLSx, Script download: https://bit.ly/3n9eb7M
ORT Digieyes2 Review: https://youtu.be/sGScGJl7DUc
SRT tutorial: https://youtu.be/03E2iRZeT0kMadsTech review: https://www.youtube.com/watch?v=AzsFAF5peFU
Am 26.10.21 brach der bisher größte Waldbrand in Österreich aus. Mindestens eine Woche hatten die Einsatzkräfte damit zu kämpfen (und trotz Regens ist es immer noch nicht endgültig gelöscht). Vom Boden schwer zu bekämpfen (unwegsam!) muss hier schon Einiges in der Luft anrücken:
Airbus H125 (Polizei), Alouette III, Agusta-Bell AB-212
2 Blackhawks, ein roter Super Puma, eine slovakische Mil Mi-171 und die italienischen Wasserflugzeuge vom Typ Canadair CL-415.
(Tip: nutzt den Index wenn ihr bestimmte Maschinen sehen wollt!)
Toll zu sehen, daß die Nachbarländer so toll mithelfen.
Danke an alle Beteiligten!
26.Oct 2021 a huge forrest fire (for our scale) was started. It seems thru an abandoned campfire - but also because the forrest was very dry due to long periods of no rain.
Now it's over a week and each day 500 or more firefighters and many helicopters and planes try to extinguish the fire! It's especially difficult due to the rough terrain (very steep!).
In the next days rain is forecasted - so it should end soon!
Despite the incredible damage to the woods (will take 20+ years to repair) it was a spectacular sight to see all those copters in the air and amazing to see so much people work together to achieve one goal!
Great to see neighbouring countries (Italia, Slovakia and Germany) stepping in to help us.
Forrest fires of that scale are seldom in Austria - that's why we don't have enough large helicopters or planes. Also it looks like the water-planes Italy sent are not optimal - large rivers or lakes to fill up the planes water tank are mostly too far away...
Thanks to all involved,
thank you for watching (and reading this description),
greets, Mario
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Location: Hirschwang an der Rax https://goo.gl/maps/W9DQPRmf9CE8HTWW9●▬▬▬Credits▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬●
Thanks @Hover82 (for plane fillup video from today!): https://www.youtube.com/user/hover82
Credits: Wiener Zeitung: https://youtu.be/yjIr_8aLYWI for parts of Mil Mi 171
and "TeamAigner" on Tiktok (thanks Hover for showing me this funny clip)
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Filmed with: Panasonic GH5, GX8, 100-400mm Lens, or 14-140mm (times 2)
Edited on Premiere Pro
Rekon6 finally got his first proper DIVE mission in one of the best locations for mountain dive videos I know so far.
First I flew without the HD cam - so you see DVR footage for the first flight (we have to be remembered that this is live video - no glitches, great quality!)
Then I managed to mount my universal mount for the InstaSMO4k on the Rekon6 and got ~10mins of extreme scenery by flying up there with a regular 6s Lipo (more stable in higher winds than LION 4cell).
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my Hangar: http://goo.gl/QNzck
Filmed with: Samsung Galaxy S10,
HD Cam: InstaSMO4k in 2.7k30 with ND Filter
Edited on Premiere Pro
