HDMI Wireless Video Transmitter and Receiver COFDM-908T

TARO. Na cava na kena iwali ena vidio?
E DUA: 1080P NI HDMI.

TARO. E sa rui cecere beka na kaukauwa ni vakau itukutuku?
E DUA: Me baleta na Transmitter, na duidui NI (veivakatataki cake ni kaukauwa) e loma, e duidui na kena gauna. 20W 6-7A, 10W 5A, 5W 3A, 1-2W 1.6A

Me baleta na Iciqociqo, na gauna oqo e 0.3E DUA (300mA)

TARO: Me vaka eda gadreva ga e 10km, na levu ni PA e vakaturi?
E DUA: Vakasamataka ni sa vakayagataki ena qele na nomu dauvakau itukutuku kei na iciqociqo, sega ni vaka na drone, na cecere ni dauvakau itukutuku kei na iciqociqo e duidui sara. E vakaturi me vakayagataka e dua na ivakadewa ni 10W PA me baleta na 10 kilomita. E dodonu talega mo vakasamataka ni sa vakacurumi ena motoka na nomu iciqociqo, ka toso tikoga vakatotolo ena dua ga na gauna. E dua ga na dauvakau kaukauwa e rawa ni vakadeitaka na tudei ni sikinala ena iciqociqo.

TARO: Na ivakarau cava e vinaka cake? 2.4G se 5.8G?
E DUA: Na ivakarau ni cofdm e 170 ~ 860Mhz.
E tiko talega vei keda na ivoli e vakayagataka na 2.4G se 5.8G, ia na kena iwiliwili ni rua na gauna oqo e tautauvata kei na wasoma ni WiFi, ka na vakavuna me vakataotaki vakalevu na vakadewataki ni iyaya mai na WiFi, ka na vakalekalekataki sara na yawa ni retioyaloyalo.
Kevaka e tiko na ivakatakilakila ni TV vakalivaliva DVB-T ena noda vanua, tovolea mo kakua ni dau vakayagataka vakawasoma na veika oqo ni ko digitaka na wasoma.

TARO: E rawa ni ra veisautaka ga vakataki ira na kasitama na ivakarau ni veivakarautaki? Kevaka e dau vakayagataki na wasoma ena so na gauna.
E DUA: Na ivakarau ni valenivolavola e sega ni vakatarai e 595Mhz, e raraba ni tiko na bandwidth +/-15Mhz, ka 30Mhz, kei na kena ivakarau e rawa ni veisautaki. (580-610Mhz).
Sivia na iwasewase oqo, e gadrevi me veisautaki na antenna kei na PA customized me vaka na ivakarau ni valenivolavola oqo.

TARO:E veisautaka vakacava na kasitama na ivakarau ni dauvakau itukutuku se iciqociqo? E tiko beka e dua na parokaramu ni komipiuta me veisautaki kina na kena ivakarau?
E DUA:It's very easy, na dauvakau itukutuku e rawa ni vakayagataka na ivukevuke ni papa volekata na iyaloyalo, and the receiver's assistant board is on the fuselage, ena dua na sikirini kei na bulukau.

Ia e sega ni vakaturi vei ira na kasitama me ra veisautaka na, baleta ni so na gauna a veisautaka na parameters ni transmitter ia a sega ni veisautaka na parameters ni iciqociqo, ka kaya ni sega ni rawa ni ciqoma na sikinala.

TARO: E rawa beka ni'u veisautaka na vakaukauwataki ni kaukauwa ena iyaya ni vakau?
E DUA: E rawa ni vakalailaitaka o koya e vakayagataka na kaukauwa dina ni vakayagataki ena nona vakalevutaka cake na dukadukali ni kaukauwa cecere, ia e sega ni rawa ni vakalevutaka na kena vakadewataki na kaukauwa lailai PA.
Me kena ivakaraitaki, 10W PA e rawa ni veisau ki na 5W PA, ia e sega ni rawa ni veisau 5W PA ki na 10W.

1. E sega ni dua e rawa ni tukuna vei iko na yawa ni retioyaloyalo. Baleta ni na vakatau na yawa ni retioyaloyalo ena balavu ni nomu ena ena, whether the transmitted signal can be diffracted, whether there is interference in the current frequency, kei na so tale.
2. There are trees or a mountain in the middle, and the transmission distance is different.
3. It is difficult to tell you an accurate transmission distance, even the walls have thickness, generally 500-1000 na mita.
4. Please watch our test video, if you think it is suitable, you can buy a sample for testing, if you are not satisfied, you can return it to us.
5. Here is a form for COFDM PA and LOS and NLOS transmission distance for your references.

Now COFDM-908T supports H.264, not H265.

Max support 1080 50T. We have actually tested that at 1080P60, the frame will be stuck, or the recognition will be incomplete

1. Power consumption is equal to current times voltage. Me kena ivakaraitaki, for a 10W transmitter, the current is 5.5A, and the voltage is 12V, so its power consumption is 66W.
2. If you prepare a 1000W rechargeable battery and use a 10W PA transmitter, it is estimated that you can use 1000W divided by 66W, which is equal to 15 na auwa.

1. Whether the link between the transmitter and receiver is good or the signal strength can be seen on the small screen at the COFDM receiver.
2. Not on the transmitter. Baleta ni COFDM e dua ga na sala ni kena vakau, na iciqociqo duadua ga ena rawa ni ciqoma na kaukauwa sikinala ni transmission ka vakaraitaka ena sikirini. Kevaka e gadreva na dauvakau itukutuku me raica na sikinala oqo, e gadrevi me vakuri e dua na iyaya ni vakau itukutuku ni itukutuku me vakadewataki kina na sikinala ni ituvaki mai na iciqociqo ki na iyaya ni vakau ka vakaraitaka ena rarama ni sikinala.
3. Na vakau kei na iciqociqo ni transmission rua na sala e rawa ni tiko kina na cakacaka oqo, ka sa vakaturi me digitaka e dua na misini ni vakau itukutuku ni bidirectional.

1. Taumada ni donu na ivakarau taucoko.
2. Me rawa ni rawati na cakacaka vinaka duadua ni iyaya ni vakau, vakaukauwataki kei na antenna ni kaukauwa, era sa dau vakamatautaki me vaka e dua na ivakarau ni veiqaravi e loma, ka rawa ni ra cakacaka kece ena loma ni dua na ivakarau ni cakacaka, raraba ±15Mhz. Oqori na kena ibalebale, ni sa 290Mhz na ivakarau ni cakacaka e loma, na kena cakacaka na iyaya ni vakau e 275Mhz ~ 305Mhz. Sa na sotavi kina na ivakarau ni 280 ~ 300Mhz era gadreva na kasitama.

1. Io, na sikinala ni vidio isema e vakavinakataki ena kena vakayagataki na Yagi kei na omni-directional.

2. 

3. 

1. Io, e rawa ni da tara cake na kena vakadewataki na telemetry kei na vidio ena COFDM-908T.

2. E vakaturi na ivakaraitaki e ra ni kena vakacurumi na telemetry.

   https://ivcan.com/p/digital-data-link-for-drones-and-robotics/

   

1. iMatai, na 10-watt RF linear amplifier kei na 20-watt RF linear amplifier e vakayagataka na qara vata ga, ka dau misini ena dua na iqaqi ni CNC.
2. Na misini ni iqaqi ni CNC e sega walega ni sau levu ia e taura talega e dua na gauna balavu me cakacakataki. Na qara 20W kei na 10W era sa raraba, me rawa ni ra vakayagataki vakai ira. Me totolo na kena vakau, a sega ni veisau na ivakarau ni bula oqo ka vakayagataki vakadodonu.
3. Na ivoli oqo e tiko dina 20 Watts. We used special instruments to test it before shipment. Please see the video below. （The instrument shows 3.04dBm plus the black attenuator 40dBm equals 43.04dBm）
4. Test video at youtube: https://www.youtube.com/shorts/jfNoZeb1BIA
5. Here are some correspondences between the output power and the dBm parameters displayed by the instrument.
6. 20mW is 13dBm
   200mW is 23dBm
   1 Watts is 30dBm
   2 Watts is 33dBm
   5 Watts is 37dBm
   10 Watts is 40dBm
   20 Watts is 43dBm
   50 Watts is 47dBm
   100 Watts is 50dBm

Normal Four HDMI Video input and One HDMI output box

If it is just a simple splicing of four camera videos into one video, you can add a box with four HDMI inputs and one HDMI output in front of the transmitter. Sa kena ibalebale oqo ni monita ena iciqociqo ena dau vakaraitaka na vidio yadua ena dua na vulatolu ni sikirini.

Io, na noda dual antenna RF iciqociqo ni icurucuru e tokona na duidui. E rawa ni o vakayagataka e rua na yagi directional antenna ena noda cofdm isema ni vidio iciqociqo.

Me baleta na sikinala vinaka cake ni ciqomi, e vakaturi me tiko e dua na Yagi directional antenna kei na dua na antenna ni omnidirectional vakacurumi ena iciqociqo.

E rawa ni ra vakayagataka na dauveitaba. Tokoni 1080@60P ena gauna oqo, 1080@50P, 1080@30P
Ena gauna oqo, e sega ni tokona na 1080i, ka sega talega ni tokona na 4K na retioyaloyalo.