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UHF RC Shootout: Arkbird Long Range System (part 1) 

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This is the Arkbird long range UHF RC system.
This video (part 1) looks as the general design, layout and quality of construction. The Arkbird transmitter loses points for less than ideal physical construction and the use of a module and chips that have had their identifiers obliterated. The poor thermal design may also cause problems with extended use. As a result this transmitter gets only a "satisfactory" rating from a hardware perspective.
The receiver is "clunky" because of the silly antenna (and lack of plug for same). The use of an old-style crystal is also an unwelcome surprise. The receiver scores a poor rating from a hardware perspective.
Pro's:
- the concept (a 2.4GHz to 433MHz repeater station) is great
Con's:
- poor physical construction of transmitter
- silly receiver antenna and old-style crystal
- RF module performance unknown until bench-tested
- receiver antenna hardwired and glued
Check part 2 for the bench-tests which will determine how the system actually performs.

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14 авг 2015

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Комментарии : 31   
@Fatpumpumlovah2
@Fatpumpumlovah2 8 лет назад
Always knew it, Hype Hype and more HYPE!
@RussellGilder
@RussellGilder 8 лет назад
Just to clarify what jack is the footprint for? Sma? For the price these are it might be worth it just for an experiment.
@JRoode32
@JRoode32 7 лет назад
Dude it's been a year, when are you going to do the second part of the UHF systems?
@billyproctor9714
@billyproctor9714 7 лет назад
I'm 65 years into this life and with regard to folks hiding components and such, I have often found that those that do the most to infringe on people knowledge about parts are the biggest thieves of others ideas. The people that worry about stuff getting stolen are the biggest thieves of all. Best wishes , Billy
@jasontotz
@jasontotz 8 лет назад
Hi mate, there is a similar system to the Arkbird from DALRC called QUHF. I was wondering if you have heard of it and if you could get hold of one of those and make a review. Cheers!
@marekserafin7995
@marekserafin7995 7 лет назад
Is the second part ready ?
@rctv-uk3126
@rctv-uk3126 8 лет назад
Working my way through these with interest Bruce, I have to say this was the one I was routing for..... I guess I will keep my fingers crossed for the testing, that said I am not looking forward to resoldering antennas fo rthe RX's if it shines in those tests.
@Starchface
@Starchface 8 лет назад
RCTV-UK It seems like an interesting unit. Soldering a jack on there looks like a pretty easy job. Now that antenna looks pretty odd, but the performance could be fine for all I know. I guess we'll find out, but I would just leave it as is unless there's a problem. Maybe it looks weird but I wouldn't be bothered by it.
@zbe859
@zbe859 8 лет назад
+pillsnotbills I've seen a video of someone doing 60km with this antenna.
@RussellGilder
@RussellGilder 8 лет назад
I was thinking the same exact thing. How hard could it be to soldier a jack on for a dipole antenna. The price is right if it works
@ranjeety46
@ranjeety46 7 лет назад
sir I need help in wiring pixhaw fc how I can connect pwm receiver in ppm slot
@WarblesOnALot
@WarblesOnALot 8 лет назад
G'day, Yay Team ! Wheeeeeeeeeee...!!! Stickit to 'em... ;-p Ciao ! ;-p
@Mr.Laidukas
@Mr.Laidukas 8 лет назад
It seams that EEVblog is doing lot's of influence to you as person :) You started to use a lot of expressions and ideas used by Dave in EEVblog :)
@zbe859
@zbe859 8 лет назад
Part twwwoooooooooooooooooooo....... Thanks:)
@ikkebuyckx
@ikkebuyckx 8 лет назад
seems like the heatsink dois contact the outer case... the antenna is really lame... but hey, solder on a connector and there u go
@zbe859
@zbe859 8 лет назад
Hey man. Any chance of a part two anytime soon on the Arkbird UHF? Don't mean to be a nuisance but this was months ago.
@OutbackKanga
@OutbackKanga 8 лет назад
+PoppaShocka Yes that would be nice Bruce we would certainly enjoy part 2 :)
@zbe859
@zbe859 8 лет назад
+OutbackKanga Lol I love Bruce's videos but if he ever says part 2 is coming, don't hold your breath.
@ericdamexican
@ericdamexican 8 лет назад
They can't really expect a modeler to use that auto antenna?! Right!!??
@drsstc
@drsstc 8 лет назад
9 months and no part two, why do you even say part one if you have no intention of doing part two?
@jbx907
@jbx907 8 лет назад
i think bruce left out rmilec LRS hehehe.
@TheEPROM9
@TheEPROM9 8 лет назад
They do that stupid chip scraping in the Mobius camera as well, rats me off every time.
@200sxxxxx
@200sxxxxx 8 лет назад
ive tryed this.. waste of money. using it as a repeater linked to a 2.4 receiver, it was so lagy. the was such a long delay between signals.. i didn't even risk flying with it show us a part 2 bruce!
@chrisf5475
@chrisf5475 8 лет назад
+drifta1600 Did you use single PPM cable from TX ? I've heard this causes the lag but if you use separate servo cables it works fine.
@200sxxxxx
@200sxxxxx 8 лет назад
+Chris Flory tryed it both ways. both had lag. used with frsky taranis. went dragon link. works perfect.
@lasersbee
@lasersbee 8 лет назад
3:13 3:37 So I guess it's effective. You admit that you couldn't easily find any data on that Xmitter module. The idea is that if a hacker wants to copy it, to have the hackers waste as much of their time as possible to make it non viable/profitable. Of course if someone has nothing better to do with their time... it can always be done.
@superdau
@superdau 8 лет назад
lasersbee Someone who knows the usual sources for ready made modules may have to search for an hour to find the original manufacturer. And it won't be anything special anyway, just a serial-to-RF module that are available in plenty configurations. And it took me approx. 5 seconds to suspect the chip to be a STM32F103xx in a LQFP48 package and another 15 seconds to confirm the pinout (powersupply, crystal connections) with the datasheet. So it most likely took the guy at the factory longer to scrape off the marking of the chip than it took me to find it.
@lasersbee
@lasersbee 8 лет назад
Jellapper Lökkäs I don't find Hackers important at all. They should use their "intelligence" to create new and useful things rather than steal the IP of someone else.
@RussellGilder
@RussellGilder 8 лет назад
+Jellapper Lökkäs i agree. Deep facepalm
@WorksopGimp
@WorksopGimp 8 лет назад
stolen parts ;-)
@ChristopherF_1971
@ChristopherF_1971 4 года назад
Yeah they got some 6 year old Chinese child scraping off identifiers off of chips and boards in shack towns and paying them with old 🍚
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