FHSS ʻoku mafola ʻa e tuʻunga ʻo e mafola ʻi he tuʻunga ʻo e fehokotakiʻanga vitio wireless transmitter mo e receiver
How does FHSS work on the drone wireless video transmitter and receiver?
FHSS is an automatic frequency modulation technology. We widely used FHSS in wireless video data transmission of drones. Because the drone’s wireless link is often subject to signal interference.
In this video, this frequency point shows the current signal strength.
Ko e 1365 we see is the current signal working frequency point of our wireless transmission equipment.
Why does this frequency go here?
Because there are other signals on the right that are interfering. It will run automatically.
If the signal receives interference again, it runs away again, choosing the frequency with the least interference.
This process is meant to avoid interference. We also call it the FHSS function.
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Te nailoni e fehokotakiʻanga vitio wireless 150-200km ʻe centerless tuʻuaki ʻo e netiueka transceiver -
Te fehokotakiʻanga ki he ngaahi vitio loloa ʻo e letio Telemetry wireless ʻi he vahaʻa ʻo e UAV mo e feituʻu ʻoku puleʻi ʻaki e kelekele -
22km wireless ʻoku ne puleʻi ʻa e fehokotakiʻanga ki hono puleʻi ʻo e ethernet camera transmitter mo e receiver fhss Vcan1806
Q1: What is the FHSS Frequency-hopping spread spectrum?
A1: ʻOku mafola ʻa e tuʻo lahi ʻo e puna (KFSS) is a method of transmitting radio signals that involves rapidly changing the carrier frequency among a wide range of frequencies.
FHSS will occur automatically on both the transmitter and receiver at the same time. FHSS is used to prevent eavesdropping and interference on the long-range wireless video transmitter and receiver. When the current working frequency is jammed or interfered with, the transmitter and receiver disconnect and hop to the next available frequency to reconnect.
Q2: Why do you need the FHSS function?
A2:
1. Because the signal hops to a different frequency band, FHSS signals are highly resistant to narrow-band interference.
2. If the frequency-hopping pattern is unknown, signals are difficult to intercept.
3. Jamming is also difficult if the pattern is unknown; if the spreading sequence is unknown, the signal can only be jammed for a single hopping period.
4. With minimal mutual interference, FHSS transmissions can share a frequency band with many types of conventional transmissions. FHSS signals interfere in narrow-band communications and vice versa.
Q3: How to set the FHSS at your wireless video data transmitter and receiver?
A3: At the web manager UI, please choose the advance page, you can see the above picture.
https://i0.wp.com/ivcan.com/wp-content/uploads/2022/02/UI-Advance.webp
Q4: 7 tips you should know before you choose a wireless video transmitter and receiver with FHSS function.
A4:
1. TX900B-2W supports the frequency range is 1420~1530MHz, and there is 110Mb bandwidth to use.
2. The customer can set the working bandwidth as 1.4M/3M/5M/10M/20MHz (Ka neongo ia, 1.4M/3MHz may not be suited for video transmitting). Then TX900B-2W can work in FHSS mode (ʻOku mafola ʻa e tuʻo lahi ʻo e puna) and the system will automatically select the central working frequency and may do frequency hopping (between 1420~1530MHz) during its working.
3. Customers can also plan to use the frequency channels in the whole 1420~1530MHz and set the device to work in the fixed frequency channels too.
4. TX900B-2W supports the longest distance at 22km.
Except for the frequency range supported and the longest distance, the physical appearance, fengaue'aki 'a e, UI, operation, mo e ngaahi a pehee, the TX900B-2W is the same as the existing TX900B-15km-2W.
5. TX900B-2W only support a frequency range is 1420~1530MHz, it does not support 800MHz and 2.4GHz frequency range.
6. There are two versions, TX900B-2W-15km, and TX900B-2W-22km.
7. As the TX900B-2W frequency range is 110Mb, so if you config the working bandwidth as 10Mb, then you will get 11 points to hopping.
Q5: What is the working principle of your FHSS?
Our wireless video transceiver adopts intelligent frequency selection-interference avoidance.
Intelligent frequency selection (interference avoidance) technology is a new anti-interference technology, which can effectively avoid interference and maximize the reliability and stability of wireless transmission.
The key to our unique intelligent frequency selection (interference avoidance) technology lies in the three major processes of interference detection, decision-making, and switching execution. Interference detection refers to real-time detection of interference and background noise at each frequency point during normal communication, so as to provide basic support for decision-making. The decision-making is completed independently by each node, and the optimal frequency is selected based on the criterion of optimizing its own receiving performance. The point is used as the receiving frequency point; the switching execution occurs after the decision selects a new optimal frequency point, and the switching process will not cause data loss, ensuring stable and continuous data transmission.
Our unique intelligent frequency selection (disturbance avoidance) technology enables each node to independently and dynamically select different optimal frequency points for different frequency networking, so as to optimize the overall network performance and effectively avoid interference.
Kātaki ʻo vakaiʻi ʻa e fakatātā ʻi lal, the blue area is the effective signal, mo e the red line is interference. 
Q6: Does your FPV VTX support the FHSS frequency automatic jumping function to avoid interference?
FPV VTX is a one-way transmission and cannot support the FHSS frequency automatic hopping function.
FPV VTX is a one-way transmission, which can transmit the video from the aircraft to the ground receiver through the transmitter.
FHSS function, when the user finds that the signal sensitivity is declining or encounters an obstacle, it will notify the transmitter and receiver to modify the frequency at the same time and find a frequency with the least interference for transmission. If only the receiver modifies the frequency without controlling the transmitter to modify the same frequency, the frequency of the transmitter and receiver will be inconsistent and the transmission will be interrupted.
Because of the above requirement of notifying the transmitter to modify the frequency, the FHSS function needs to be based on a two-way transmission system.
Or your FPV VTX can support modifying the frequency function through the serial port. When you need to modify the frequency, the operator sends a preset serial port command from the receiver to the serial port of the transmitter. After receiving this command notification, the transmitter automatically changes to the next frequency point.
This is equivalent to your wireless transmission equipment, which has both a one-way video transmission function and a two-way data transmission function, which is equivalent to your current wireless control system. So whether it supports the serial port to modify the frequency of the transmitter depends on whether your current device supports it.
Our models below support such functionality.
Vcan1776 Vcan1886
Q: Do you have a video data link as per the below requirement?
The required distance is 50 kilomita ʻe, ʻi he tuʻo lahi ʻa e tekinolosia (jumping over 1,000 times in one second), ideally above 6Ghz (others can be considered, the most important thing is frequency hopping technology), and it is also necessary to transmit data, vitioo, and protect the remote control channel, preferably A set of data links (IR Transmitter + tokotaha ʻokú ne puke ʻ + 'enitena) using frequency hopping technology (KFSS)
iVcan Reply: 'Ikai, The frequency is only 1.4G, the working frequency for 6Ghz needs custom development.
Q: Do you have any optional model to support the FHSS Frequency-hopping spread spectrum?
In the below picture, you can see that there are 12 points frequency ready for FHSS.
Real-time interference detection function
The products that support FHSS
Drone Video Transmitter support FHSS
Radio Telemetry support FHSS
Vitio ʻo e sivi fakamuimui taha ki he te loloa ʻo e vitioo Transmitter mo e receiver
2W PA 27km sivi moʻoni mei he moʻunga ki ʻolunga ki matatahi laine-ʻo e-mamata
Fakamuimui 1 110km siviʻi e vitioo ki he te loloa ʻo e vitioo Transmitter mo e Receiver
NLOS e vitio wireless transmitter mo e vitiō sivi ʻo e receiver ʻi hono langa ʻo e laine ʻoku ʻikai ke sio ki ai
65 KM te UAV siviʻi moʻoni e vitio wireless
65 KM te UAV siviʻi moʻoni e vitio wireless
1.5km ki he kelekele NLOS, 10-20-30km LOS Air ki he kelekele wireless video transmitter receiver
COFDM-912T NLOS (ʻikai ʻata) 1.5sivi moʻoni ʻo e km ʻi he koló, ngaahi falé, ʻuluʻakau mo e ngaahi hala
Web Device Management UI ki he UAV wireless fehokotakiʻanga fakamatala fakavitio transmitter feʻaveʻaki ʻe he IP kupenga camera
Cheapest CVBS RCA 720P vitio wireless Transmitter + 1080P Receiver Support 128 encryption
COFDM-912T siviʻi moʻoni ʻi he ʻatakai faingataʻa ʻo e kolo, transmitter ʻi he kaa, tokotaha ʻokú ne puke ʻa e polokaá ʻi he fal
ʻOku maʻu ʻe he foʻi vitio wireless transmitter mo e kiʻi screen siʻisiʻi ʻo e receiver ha tokoni lahi ki hono fakaʻilongaʻi ʻo e malohi ʻoku lokaʻi
OFDM wireless video Transmitter ki he IP camera manifi
Fe'ave'aki transmission mama'o
Founga Puleʻi ʻo e Flight Protocol
Input Vitiō ʻa e Transmitter
Founga ʻAve Wireless
Fakafeʻatungia mo e Vakai
Founga mo fakaangaʻi ʻa e
Tokotaha Fetuku Koloa (Transmission)
Fakahinohino ki he Fakamatalá
'Enitena
FAQs fekauʻaki mo e wireless video Transmitter mo e Receiver
ʻOku maʻu ʻe heʻetau vitio wireless transmitters ʻa e faʻahinga vitio ko ʻeni interfaces: HDMI 1080P mo e 4K HDMI, CVBS composite, SDI, AHD, IP Ethernet, BNC, pe talamai pe ko e ha e faʻahinga ʻoku ke fie maʻu, ʻe liliu ʻemau ʻenisiniá ke feau hoʻo fie maʻú.
ʻE lava ke liliu ʻetau mamaʻo ʻaki hano tanaki atu ha malohi amplifiers. ʻI he lolotongá ni, ko e ngaahi tefitoʻi meʻa mahuʻingá ko e 15km, 30km, 50km, 80km, 100km , mo e kilomita ʻe 150, ʻa ia ʻoku makatuʻunga ʻi he ngaahi fie maʻu ʻa e kau fakatau.
ʻIo, ko e mamaʻo ʻo e fetuʻutaki ʻoku hiki atu ʻi ʻolungá ʻoku ʻi loto kotoa ia LOSI ʻa e laine ʻo e mamata. Kapau ʻoku ʻi ai ha ngaahi faingataʻa ʻi he vahaʻa ʻo e transmitter mo e tokotaha ʻoku ne puke ʻa e foaki, NLOS (ʻa e ʻikai ke mamata), ʻoku fakasiʻisiʻi ʻaupito ʻa e mamaʻo ʻo e feʻaveʻaki paʻanga, ko e kilomita pe kilomita ʻe 2, ʻo makatuʻunga ʻi he lahi ʻo e ngaahi faingataʻa mo e ʻatakai wireless fakalotofonua.
Founga ʻe taha ʻuhinga, Te tau lava pe ʻo fakahu mo download ʻa e vitioo pe fakamatala mei he wireless video transmitter ki he tokotaha ʻoku ne puke ʻa e foaki ʻi he tafaʻaki pe ʻe taha, pea he ʻikai ke tau lava ʻo upload ha vitiō pe fakamatala mei he tokotaha ʻokú ne puke ʻa e fakamafolá (receiver) ki he tokotaha ʻokú ne puke atu ʻa. ʻOku toe ui foki ʻa e faʻahinga ko ʻení ko e simplex.
Tafaʻaki ʻe ua ʻuhinga ʻoku, ʻikai ngata pē ʻi heʻetau lava ʻo download ʻa e vitioó pe fakamatalá mei heʻetau wireless transmitter ki he tokotaha ʻokú ne puke atu ʻa e fakamafolá, ka te tau lava foki ʻo upload ʻa e vitioó pe fakamatala mei he tokotaha ʻokú ne puke ʻa e fakamatalá ki he tokotaha ʻokú ne puke ʻa e fakamafolá. ʻOku feʻunga ʻaupito ʻeni ki hono fakalele drones. He ʻikai ngata pe ʻi hoʻo sio ki he vitio moʻoni ʻoku ʻave mei he te, ka ke upload foki ʻa e fekau ke puleʻi ʻa e te pe ko e fekau ke puleʻi ʻa e meʻa faita PTZ ke liliu ʻa e tuliki ki he transmitter. ʻE lava ke ngāue ʻeni he taimi pē ko iá. Naʻe toe fakahingoa foki ʻa e faʻahinga ko ʻeni ko e vaeua-dulpex pe duplex kakato.
Kātaki ʻo vakaiʻi e fakaikiiki ʻi he fehokotakiʻanga ʻi laló. https://ivcan.com/request-a-quote-of-wireless-video-transmission/#simplex
Ko e lahi taha ʻo e vitio wireless transmitters tokoni he taimi ni AES128 pe AES256 bit encryption mo e decryption, ʻo makatuʻunga ʻi he sīpinga ʻokú ke filí. Kātaki ʻo fetuʻutaki mai kiate kimautolu ke fakapapauʻi.
Ko e frequencies ʻo e vitio wireless transmitter mo e tokotaha ʻoku ne puke ʻa e vitio wireless ʻe lava ke liliu. ʻOku fie maʻu ke fakatau ʻe he niʻihi ʻoku nau fakaʻaongaʻí ha toe ngaahi seti.
Ka neongo ia, fakakaukau kuo ʻosi fakaleleiʻi ʻa e malohi amplifier mo e ʻenitena ʻi ha ngaahi meʻa pau ʻi he taimi ʻoku ʻave ai ʻa e koloa. Kapau ʻe liliu ʻe he tokotaha ngāue ki he polokalamá ʻa e tuʻo lahi hono ʻavé, ko e ngaahi meʻa ʻoku fekauʻaki fakatupulaki e mālohí, ʻOku totonu foki ke liliu transmitter ʻenitena mo e receiver ʻenitena ki he tuʻo lahi tatau pe, pea ʻoku fie maʻu ke mateuteu ʻa e kau ngāue ko ʻení. Kapau ʻoku ʻikai, te ne fakatupu ʻa e tuʻo lahi ʻo e transmitter vitio wireless ke kehe mei he tuʻo lahi ʻo e ʻenitena, ko hono ʻai ke faingataʻa hono kai e meʻa. Ko ia, kātaki ʻo fakapapauʻi ke fakahā mai ʻa e tuʻo lahi totonu ʻokú ke fie maʻú kimuʻa pea toki ʻota e ʻotá.
Kapau ko ha tuʻunga malu pe ʻikai fakahāhāholo, te ke lava fakaʻaongaʻi e encryption mo e decryption ngaahi ngāue ʻa e transmitter mo e receiver, ʻa ia te ne lava ʻo fakapapauʻi ʻoku fakapulipuli hoʻo feʻaveʻaki vitioo. .
'Io, kotoa ʻetau koloa ʻe lava ke fakafeʻungaʻi ʻa e ngaahi fakangatangata fakatatau ki he ngaahi fie maʻu ʻa e kasitoma. Kapau ʻoku ʻi ai haʻo kole makehe, kātaki ʻo talamai ke mau ʻiloʻi ʻi he fehokotakiʻanga ʻi laló.
https://ivcan.com/request-a-quote-of-wireless-video-transmission/
- Liliu ʻa e feituʻu ʻo e tokotaha ʻokú ne puke ʻa e fakamatalá ke fakaʻehiʻehi mei ha kaunoa fakalotofonua mei ha ngaahi ʻatakai malohi hiki fakamakinito.
- Fakapapauʻi ʻoku ʻutena ʻa e ʻoku fakatou tuʻu ki ʻolunga ʻa e transmitter mo e receiver.
- Kataki ʻo hiki hake ʻa e ʻu ʻenitena ʻo e transmitter pea foaki ki he tauhi ha faikehekehe maʻolunga pau.
- Kātaki ʻo vakavakai takai ke fakapapauʻi ʻoku ʻoku ʻikai ha fakafeʻatungia ʻi he vahaʻa ʻo e transmitter mo e receiver.
- Liliu ʻa e fakataukeiʻí ʻo e tokotaha ʻoku ne puke ʻa e ʻenitena.
- Kapau ʻoku ʻikai ngaue, ʻahiʻahi ʻunuakiʻi ʻa e receiver ke ofi ki he tuʻunga ʻo e transmitter ke vakai pe ʻoku lahi ange ia ʻi he mamaʻo ʻo e wireless.
- Pe fakakaukauʻi tānaki atu ha sīsini ʻo hono ʻavé ʻi he vahaʻa ʻo e transmitter mo e receiver.
- ʻOku totonu ke maʻolunga taha ʻa e ʻenitena mei he kelekele ʻe lava, ʻi he taimi ʻe maʻu ai ʻe he kelekelé ʻa e fakaʻilonga ʻoku ʻavé.
ʻIo, ʻoku toe mahino foki kiate kitautolu ʻoku fuʻu mamafa ʻaupito hono feʻaveʻaki ʻo e ngaahi vitiō wireless mo kinautolu ʻoku nau tali iá. ʻOku ke mamaʻo mei he fale ngaohiʻanga Siaina. pea ʻamanaki ʻe feʻunga ʻa e ngaahi koloa ʻokú ke maʻú mo e ngāue lelei tahá.
Kapau te ke tokanga makehe ki ha parameter pe ngaue pau, te tau lava ʻo fai ha ngaahi vitiō sivi ʻo makatuʻunga ʻi he ngaahi meʻa ʻokú ke fie sio aí, kātaki ʻo ongoʻi tauʻatāina ke fetuʻutaki mai kiate kimautolu. He ʻikai ʻave fakahangatonu ia kiate koe taʻe te ke fakangofua.
Ke siviʻi hono fakatoloi ʻo e vitio wireless transmitter mo e receiver, ʻoku fie maʻu ke tau fai ha sivi ʻe ua.
Ko e ʻuluaki ke siviʻi hono fakatoloi mei he meʻa faitaa ki he fakaʻaliʻali.
Ko hono ua ko e meʻa faitaa, tanaki atu ki ai mo e fakaʻaliʻali fakataha mo e ʻimisi wireless transmitter mo hono fakatoloi ʻo e tokotaha ʻoku ne maʻu e foaki.
Kole ʻa e ongo ola ʻo e sivi ko hono fakatoloi moʻoni ia ʻo e vitio wireless transmitter mo e receiver.
ʻI heʻene hoko ko ha foʻi vitio HDMI fakapalofesinale ʻoku ʻikai ke ʻi ai ha wireless transmitter mo e tokotaha ʻoku ne fai e foaki mo e kautaha ngaohi kapeti ʻi Siaina Shenzhen, ʻoku tau ʻomi ʻa e foʻi vitio lelei taha ki he wireless transmitter mo e receiver ʻi ha ngaahi taʻu lahi, pea mau maʻu ha ongoongo lelei mo vakaiʻi lelei taha.
ʻOku ʻi ai ha motolo kautaha fotunga ʻiloa ʻe niʻihi ʻo e vitio wireless transmitters, hangē ko e Blackmagic, Ngaahi maumau ʻa Holyland 300 400s, Accsoon cine mata 5g, RavenEye, Zhiyun, Kiʻi puha ʻo e meʻangāué, toʻo ʻa e ngāué, CVW VAVE 800, dahua, iogear, Artek pate-225k, microlite, nyrius, teradek.
Ko e patiseti lelei taha ki he fakamafola wireless transmitter pea ʻoku lahi e ngaahi polokalama ʻoku fakaʻaongaʻi ʻe he tokotaha ʻoku ne maʻu e foaki, ki he TV ʻe 4K, Meʻa faita maluʻi ʻa e CCTV, meʻa faitā talifaki ʻo e meʻ, PTZ naunau faita vitioo, puha ʻuhila, komipiutá, sony camcorder, wifi polokalama vitio ʻo e konifelenisi, DSLR Kuo TATANAKI, UAV te, komipiuta toʻotoʻo ʻa e PC, mīsini fakaʻata lahi, ʻi loto kā, iPhone iPad, streaming hangatonu, Meʻafaita sipoti ko ePro, pi raspberry, Xbox PlayStation.
Ko e foʻi vitio kakato ʻo e HD, ongó, fehokotakiʻanga fakamatala siʻisiʻi taha 1080P wireless video transmitter pea ʻoku lahi e input mo e output connectors ʻa e tokotaha ʻoku ne maʻu ia, hangē ko AV composite CVBS, HDMI, SDI, BNC, VGA, USB.
ʻOku ʻi ai ha 170-806Mhz ʻi he vitio wireless transmitter ʻoku ne ʻave ʻa e TX RX, 1.2ghz, 2.4L, 5.8L, māʻulalo tahá kae ʻikai noa ʻene ʻosí. Koeʻuhí ke lava ʻo poupouʻi ʻa e vāmamaʻo lōloá, ʻoku 10w ʻa e malohi amplifier, 20Watts, pea naʻa mo 30W.
Ko e ha ha fakatau lelei taha FHD wireless transmitter ʻi ha totongi maʻamaʻa? ʻOku totonu ke ne fakakaukauʻi hoʻo fie maʻu fakaikiiki, fili faingofua hono faingofua, ʻikai totongi mamafa, kapau ʻoku ʻi ai haʻo veiveiua, Kataki 'o fakahoko ʻa e kole ha kupuʻi lea fōmú, ʻe ʻoatu ʻe heʻemau ʻenisinia ha founga ke fakaleleiʻi ʻaki.
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