Trasmettitore video a lungo raggio per droni, la guida definitiva alle domande frequenti

sì, for the two-way bidirectional wireless video data rc link, the quotation is on the base of one unit. Se hai bisogno di un trasmettitore e un ricevitore, then the unit price should be 2X.
There are also customers who buy three or more sets, the middle one is the relay to extend the distance further.
There are also customers with multiple transmitters and a receiver or one transmitter and multiple receivers, the quantity is according to your needs, so the cost is unit price X quantity.

The flying altitude of this drone depends on your actual application. The transmission distance we mentioned here is based on the visible range. IL (linea di vista).

We have some clients who use weather balloons in the atmosphere （24-37km）to monitor the operation and performance of the device.
There are also more customers who use UAVs, just keeping the UAV higher than the obstacle on the grounds.

In our test video on the ground, in order to test the transmission distance from 30 a 150 chilometri, it is often necessary to climb to a high mountain of about 1,000 metri, so that the field of vision is wide.

The power amplifier is a signal enlarger for the longer transmission distance. We can offer you 0.3W, 1W, 2W, 5W and 10W.
Considering the 30km-50km transmission distance, it is better to choose 2 watts for 30~40km and 5 watts for 50~80km. 10 watts PA support 100~150km.

sì, every unit of the two-way bidirectional model is the transceiver. You can put any unit to as the relay or repeater between the transmitter and receiver.

sì, each unit of TX900 has two RJ45 ethernets for the IP camera. (also support extending more cameras by net switch), three data ports, and one bidirectional audio input-output.

TX900 and Vcan1681 have software authorization on the transmission distance. Vcan1818 has no this setting, the transmission distance depends on the power amplifier.

TX900: 5 Watt: 142grams and 10 Watt 242 grammi

200-300ms video (including a camera to monitor)
30-60ms data

sì, supporto

The video quality is the same at 55km and 80km.
The working frequency should choose according to your local frequency authorization policy.
If your local has DVB-T / DVB-T2 digital tv, la gamma di frequenza è compresa tra 170 e 860 Mhz, quindi si consiglia 1,4 Ghz.
Cercare di evitare il più possibile le frequenze già in uso nell'area locale per ridurre le interferenze ed evitare il congelamento o il mosaico della qualità dell'immagine.

sì, è possibile impostare la frequenza nell'interfaccia utente Web del software o tramite lo strumento della scheda di configurazione dei parametri.
L'antenna e l'amplificatore di potenza PA funzionano in una determinata gamma di frequenze. La loro gamma di frequenza è fissa quando personalizzata.
Quindi dovresti cambiare anche l'antenna e il PA quando modifichi la frequenza al di fuori della loro gamma di frequenza.
Per esempio, quando ci dici che accetti che la frequenza di lavoro sia 1.4G, quindi l'antenna e il PA funzioneranno bene a 1.4G, anche se è possibile modificare la frequenza di lavoro del trasmettitore e del ricevitore su 800 Mhz, devi anche cambiare antenna 800Mhz e PA.

TX900 ha tre gamme di frequenza che possono essere opzionali, 800Mhz, 1.4Ghz, e 2,4 GHz.
La gamma di frequenza di lavoro del Vcan1818 può essere preimpostata in base alle esigenze del progetto.

quando lo compri, l'amplificatore di potenza e la portata massima di trasmissione sono fissi, e non può essere speso tramite l'aggiornamento del software, tranne che si cambia l'hardware del modulo ricetrasmettitore e del PA. L'assemblaggio è complesso, faresti meglio a comprarne uno completamente nuovo.

Tieni presente che il nostro modulo trasmettitore wireless supporta una banda di frequenza. Ad esempio 1427,9~1447,9 MHz (1.4sol) o 806~826MHz (800Mhz), o opzionale 2401,5~2481,5 MHz (2.4sol).
Devi scegliere 1.4G, 800Mhz, o 2.4G al momento dell'acquisto. (l'antenna e il PA saranno personalizzati in base alla banda di frequenza).
Nella banda di frequenza, ci sono molti punti di frequenza. Per esempio, la gamma 1.4G è compresa tra 1427,90 e 1447,0 Mhz. Come il Wi-Fi, the module will automatically select the frequency point with the best current signal as the transmission frequency point, so you don’t need to manually modify the frequency point unless you want to change to a frequency point with the worse signal.
So our engineer doesn’t suggest that you change the frequency manually. If you still need to do it, it should change the transmitter frequency first, then change the receiver frequency to the same as the transmitter.
It is better that you reboot the transmitter and receiver. If you don’t reboot, it also can be working.

Please check the PC AT commands at the below link.
https://ivcan.com/uart-at-command-for-wireless-video-transmitter-and-receiver/

1. In the same frequency band (such as 1.4G), the transmission rate we generally refer to (also called the air interface rate) mainly depends on the wireless bandwidth (come 10 MHz, 20MHz) e parametri di modulazione wireless (come QPSK, QAM16, QAM64).
2. Tra loro, la larghezza di banda wireless è impostata dall'utente (come la pagina wireless sotto la pagina web), ma i parametri di regolazione wireless vengono impostati automaticamente e dinamicamente dal sistema. Per esempio, QAM64 viene utilizzato per brevi distanze, e QAM16/QPSK viene utilizzato per le lunghe distanze. Questo è diverso dalla trasmissione di immagini cofdm unidirezionale.
3. Per esempio, con la stessa configurazione di larghezza di banda di 20 MHz, la velocità dell'interfaccia aerea arriva fino a 30 Mbps a brevi distanze, ma solo 3~4Mbps a distanze estreme.
Per quanto riguarda quali parametri di regolazione wireless utilizzare in quali condizioni, o i parametri di regolazione wireless attualmente utilizzati, i clienti devono esplorare e operare da soli.
4. La scelta della banda di frequenza da parte del cliente non dovrebbe basarsi sulla velocità di trasmissione della banda ad alta frequenza, ma anche in base alla legittimità della banda di frequenza e se la banda di frequenza lo è “pulito”. Teoricamente, l'onda radio nella banda delle alte frequenze corrisponde ad un ciclo breve, quindi il tempo di trasmissione è breve e la velocità di trasmissione è veloce, ma il valore teorico specifico, Non posso risponderti, il valore reale, il cliente può testarlo tramite il software di misurazione della velocità (il “misurare” pagina della pagina web del TX900 è integrata con la misurazione della velocità IPERF)

Supporto.
Il nostro sistema è un sistema di trasmissione trasparente. Ciò significa che il video o i dati immessi, li trasferiremo. Come controllare il robot, sono le tue parti.
Abbiamo clienti che utilizzano una telecamera PTZ, il ricevitore dispone anche di un joystick per controllare la telecamera PTZ, Ingrandisci, spostare o ruotare.

1. Nel campo visibile, how far our wireless transmission system can support depends on the transmission distance we mentioned and the matching power amplifier you choose when purchasing. Can be selected from 7km 15km, 30km, 50km 80 km, 100km, e 150 km.

2. If the transmission module you choose can support up to 100 chilometri, but you do not choose our default 5-watt power amplifier, then this distance cannot be reached.

3. It is difficult to answer how many kilometers our transmission system can transmit in the case of non-line-of-sight.
Because non-line-of-sight transmission distance depends on what is the obstacle between the transmitter and receiver?
If it is a metal-enclosed box indoors or on a mountain, the transmission distance cannot be determined.
Wireless video transmission signals are just like radio or GPS signals, they must be able to obtain signals in the presence of diffraction. Preferably in an open area.

This is perfectly fine,
We also have customers who use it for long-term video surveillance in harsh situations such as borders, grasslands, mines, and reservoirs.

1. Connecting more cameras also ensures smooth video, depending on the pixels you choose for video and the transmission distance.

2. Our default transmission bandwidth is 20Mbps. If you connect four or five cameras, the pixels of each camera reach 1080p, and the transmission distance is more than 30 chilometri, the video will occasionally freeze. When this happens, you can adjust the video format to a lower video pixel, or reduce the number of cameras connected to the transmitter.

1. The answer to this question is basically the same as the previous one because the bandwidth rate of our single set of links is 20Mbps. Connecting more transmitters, each transmitter will occupy the corresponding bandwidth.

2. The smoothness of the video depends on the pixels and transmission distance of each camera you choose. Below is a video of us testing three transmitters and one receiver in our office. The picture is quite smooth.
https://youtu.be/XI0fdp_LctU

1. Every transmitter and every receiver has its unique IP address. Which transmitter and camera you access from the receiver depends on whether you know the IP address you set beforehand. This ensures that, even if many sets of transmitters or receivers are in the same location, you can only access devices whose IP addresses you know.

2. At the same time our transmission and reception also support AES encryption and decryption. Even if other unauthorized users know your IP address, they cannot access or view the video of the transmitter and camera to ensure the privacy of wireless transmission.

1. Most of our customers use the RTS player of the computer to watch or record the video content of the IP camera.

2. If you need to set up NVR, our engineers can provide setup assistance according to your NVR-specific equipment.

1. My engineers and I will provide detailed help and remote configuration according to your project needs.

2. For specific technical information, according to your needs, we will judge whether it can be opened for free. But we will definitely ensure that you can use the device normally.

If used 10W power amplifier, it can reach 150~200km. (NLOS)

Because of the curvature of the earth, which creates obstructions between the transmitter and receiver, and requires longer distances, it is necessary to ensure that the aircraft flies high enough or use an intermediate mission aircraft as a relay.

According to our understanding, the hottest part should be the air unit(the access node), because the environment inside the aircraft is very narrow and closed.

1. The next time you find this kind of problem, you need to use the elimination method, because in general, the probability of unilateral problems is higher. Per esempio, if we suspect that there is a problem with the access node at the aircraft unit. then we only restart the access node at the aircraft unit. Do NOT restart the central node on the ground side to see if you can connect after restarting the access node on the aircraft side, there is a high probability that there is a problem with the access node on the aircraft side.

2. If there are conditions, per esempio, if the wired network port of the access node on the aircraft is exposed, then you can connect it to the computer, and log in to the wireless link web page (predefinito 192.168. 1.12). On the debug page, send any Comando AT, and check whether the wireless transmission system can respond to AT commands normally.

3. There is a link core module in our transmitter and receiver. It has a log function. Before the flight, it will always record the operation status of the wireless link. When there is a problem, return to the ground, export the log information, and send the log file to MorningCore Help to analyze the reason there. Come ottenere file di registro per analizzare e risolvere gli errori di interruzione del collegamento TX900.

Our wireless video data transmission system supports AES 128 crittografia, Banks also use this encryption algorithm. for more information, you can google search aes128.

1. U-shaped mountain clamp for 120cm Receiver fiberglass FRP antenna

2. 150cm Coaxial cables for 29cm transmitter antenna

3. 150cm Coaxial cables for 120cm receiver antenna

It can go directly to 55km, and the height of the aircraft should be more than 300 metri. It is best to see through, without occlusion, or there is basically no occlusion near the antenna.

The average power consumption of the video transmitter is less than 1.1A@24V, and the average power consumption of the video receiver is less than 0.8A@24V. Power supply range 24~28V.

Support lipo batteries.
6Batteria S: 3.76=22.2V, 4.26=25.2V, questo è, 22.2~25.2V, no problem.

Some clients used the HS code 8517799000.

sì, our long-range drone wireless transmitter and receiver supports Mavlink protocol and flight control. Please check the operation at the below link.
https://www.youtube.com/watch?v=KJ7JMZZNgcI
https://www.youtube.com/watch?v=9uI_KZlKeOQ

We can customize them for you according to your demand.

sì, for the transceiver, it is better to buy at least 2 pz per una coppia.
You need to buy two, one for transmission and one for reception.

36.1. What was the maximum range you received with a transmitter power of 10 watts and at what altitude?
ivcan: TX900-10W-150km, Our clients can work well at 150~200km at the 1000-meter altitude. We tested 110km from the mountain top to the seaside. https://youtu.be/r1X4AU1togE

36.2. La comunicazione tramite Ethernet supporta tutti i protocolli standard e sono previste limitazioni sui protocolli UDP? Oppure il modem è assolutamente trasparente dal punto di vista della rete?
ivcan: sì, il nostro collegamento wireless è come un cavo di rete invisibile, supporta quasi i protocolli Ethernet, TCP/IP, eccetera. TX900 supporta anche la trasmissione assolutamente trasparente.

36.3 La crittografia è possibile solo con NPP 128, o è possibile con 256?
ivcan: TX900 supporta la crittografia AES128.

36.4 La funzione mesh è disponibile per questo modem?
ivcan: TX900B ha la funzione mesh IP. Esistono tre versioni della distanza di trasmissione: 3km, 10km, e 50 km.

36.5 È possibile cambiare rapidamente la modalità operativa (durante il volo) del ripetitore tra punto a punto?
ivcan: scusate, non può cambiare il modello operativo durante il volo. È possibile modificare il ruolo del ricetrasmettitore nel trasmettitore, ricevitore, o ripetitore a terra.

I have an IP camera attached to the transmitter airborne. The video feed is being received on the receiver side. I can see the video feed in the IPCAM application. But now I want the video feed inside my mission planner software.

Risposta: Right-click on the HUD. There are several options to choose from.

Please get help at the below link.
https://ardupilot.org/planner/docs/mission-planner-flight-data.html

OK, One of our TX900 sub-models can support 30 to 50Mbps.

sì, TX900 supports a camera with RTSP protocol.
It also supports an IP ethernet protocol camera, which you can submit camera PTZ (Pan/Tilt/Zoom).

The TX900 default set includes one transmitter and one receiver, two 29cm transmitters, and two 120cm receiver antennae.

D1 is the transparent serial port of the core wireless link modem. It is designed to ensure real-time performance but not the serial port data frame structure.

We have a situation when the air and ground units are disconnected, they won’t be connected automatically. If I power the air unit off and on, they reconnect.
Please show us more details and our engineer will offer you the specific solution.

Now it supports 4k 30fps, 3840*2160@30fps