Jak kupić nadajnik wideo dalekiego zasięgu COFDM?
Jak kupić nadajnik wideo dla swojego projektu? Oto jeden nabywca zapytanie VCAN dla nadajnika COFDM wideo, Q jest kwestia kupującego, A jest VCAN odpowiedź, jeśli jesteś zainteresowany, proszę czytać lub zadać nam jakieś pytanie.
Q: Witam może mi powiedzieć, co jest cena, Obraz HDMI COFDM bezprzewodowej transmisji obrazu Przetwornik Transceiver, and with recevier we need to use with this items?
ZA: I will send to your email
Q: dzięki
ZA: Proszę sprawdzić, please ask me if you have any question on technology or order
Q: For COFDM-903T, is it transmitter and receiver for the price? if not which receiver we need to use?
For COFDM-904T TX and RX included… for TX battery is inside or we need to fix extra battery?
With antenna we need to use on the RX for have long range transmission? 10km?
ZA: I will reply you soon
this antenna
COFDM-221R HD Wireless Receiver video 1080P COFDM AV Transmisja obrazu Transceiver CVBS 170 ~ 900MHz
this is receiver
Q: receiver for 903T?
ZA: for 902t 903t 904t
Q: ok but for COFDM-904T TX and RX is included in price?
ZA: Price has including antenna, If you agree better antenna, almost USD200 one piece, 902t 904T support 20km
Q: COFDM-902T with receiver and good antenna goes at 10km?
ZA: 10km ok, z powietrza na ziemię
Q: yes that is what i need, what is the difference between 902 i 904 ?
ZA: customer installed antenna for receiver
COFDM-902T and COFDM-904T almost same, but COFDM-904T is more reliable,
Q: i dont see HDMi input on COFDM-904T
ZA: 904 has hdmi
Q: not on the pictures
ZA: I will check and send you soon.
one customer tested sample and place repeat order soon
Please check your email for HDMI input
Q: dobrze .. the pictures on your website is no up to date
ZA: tak
Q: I see on your picture hdmi now.
ZA: website picture is only one side
Q: Could you send me picture of your RX?
ZA:
this is RX
Q: we are interested to by 4-5 TX… is it working all with one RX if it’s not working in same time
ZA: At different frequency at RX, RX frequency can change by remote control
Q: so i think i will buy one set 904 TX RX with big antenna for long range… if it s working well i will buy 4-5 more TX…
ZA: now antenna is 1 metr, for sample is ok, what is your post code? I will check shipping cost
Q: 1823 Glion Switzerland
ZA: what frequency do you need? or use our default?
Q: what is our choice for 904?
ZA: shipping cost by DHL, USD69
904T is recommended
902T is also ok
Q: You say 904 is better. i choose this one, but which frequency he use? you don’ t give me size of 904 TX?
ZA: 904t default frequency is 503Mhz, 503, 509, 515, 521Mhz to switch loop, not including battery
Q: Plik 902 is 170mhz?
ZA: From 170Mhz~900Mhz, what you need, we can modify, Box size is 20 x 10 x 5mm
buy video transmitter
Q: dobrze. I need to check the law of government if this frequency is ok and i contact you soon after… is it available in stock’
ZA: 3~7 days to modify the frequency, need test long time, frequency different, ROCZNIE (powiększalnik) hardware also need change
Q: dobrze. let me check frequency and i come back to you soon
ZA: tak, it is very important
If you are interesting on buy video transmitter, prosimy o kontakt z nami.
Spis treści
Przegląd
Plik COFDM Wireless Video Transmitter and Receiver System to produkt o dużej wydajności, long-range video transmission solution specifically designed for UAV, drony, mobile vehicles, nadawanie, i profesjonalne zastosowania terenowe. Za pomocą Kodowane multipleksowanie z ortogonalnym podziałem częstotliwości (COFDM) technologia, zapewnia ten system stabilny, real-time high-definition (HD) video and audio transmission na dużych dystansach, nawet w trudnych brak linii wzroku (NLOS) środowiska.
With support for multiple video input formats including HDMI, SDI, and CVBS composite video, the system is versatile and compatible with a wide range of cameras, kamery, and drones. Coupled with high-quality H.264/MPEG-2 compression, the COFDM system ensures clear, smooth images with accurate color reproduction, minimal artifacts, i bardzo niskie opóźnienia suitable for live monitoring, Rozpoznanie UAV, Inspekcje przemysłowe, i nadawanie.
This system is ideal for professional users seeking bezpieczny, wiarygodny, and configurable wireless video links. The transmitter and receiver can be customized to specific frequency ranges, transmission distances, and power requirements, Zapewnienie regulatory compliance and optimized performance for each project.
Kluczowe cechy
- High-Definition Real-Time Video Transmission
- HDMI input supports cameras like GoPro, DSLR, and professional camcorders.
- Full HD 1080P and 720P composite CVBS video input supported.
- H.264/MPEG-2 encoding ensures minimal bandwidth usage without sacrificing image quality.
- Zaawansowana modulacja COFDM
- COFDM zapewnia robust performance in multipath, duża prędkość, and interference-prone environments.
- Modulation types: QPSK, 16QAM, 64QAM.
- Provides stable Transmisja NLOS with strong diffraction and low interference.
- Transmisja dalekiego zasięgu
- Linia wzroku (THE) distances exceed 15 km, while ground and NLOS distances typically range from 600 metry do 10 km, depending on antenna configuration and environment.
- Optional high-gain antennas extend the range further for professional deployments.
- Bardzo niskie opóźnienia
- Transmission delay typically under 300–500ms, Zapewnienie real-time feedback for drone operations, wydarzenia na żywo, or critical monitoring tasks.
- Flexible Frequency and Power Options
- Default frequencies for COFDM-904T: 503 MHz, 509 MHz, 515 MHz, 521 MHz. Custom frequencies from 170 MHz do 900 MHz lub do 1 GHz are available.
- Adjustable RF output power from 1W to 5W depending on required transmission distance.
- Wide bandwidth options: 2 MHz, 4 MHz, 6 MHz, 7 MHz, 8 MHz.
- Kompaktowa i wytrzymała konstrukcja
- Rozmiar nadajnika: 20 × 10 × 5 mm (customizable for different models).
- Lightweight and portable, Idealny dla UAV, drony, and mobile setups.
- Shock-resistant and vibration-proof for harsh operational environments.
- Obsługa wielu odbiorników
- A single transmitter can stream to multiple receivers operating at different frequencies.
- Receivers compatible include COFDM-221R, COFDM-902T, COFDM-904T, supporting Android, iOS, lub przenośne monitory.
- Bezpieczeństwo i szyfrowanie
- AES 128-bit encryption ensures secure, private transmission.
- Optional user password protection for authorized access only.
- Battery and Power Options
- Transmitters can be powered via internal batteries (where applicable) or external DC input.
- Receivers support DC 5V–36V input for vehicle-mounted or portable operation.
- Przyjazny dla użytkownika interfejs
- Easy-to-use frequency selection via remote control.
- Multiple output options on receivers, w tym HDMI, USB, and Wi-Fi for mobile device connectivity.
Specyfikacja techniczna
| Parametr | Specyfikacja |
|---|---|
| Typ modulacji | COFDM (QPSK, 16QAM, 64QAM) |
| Kompresja wideo | H.264 / MPEG-2 |
| Wejście wideo | HDMI, HD-SDI, Kompozyt CVBS |
| Moc wyjściowa RF | 1W (zaniedbanie), up to 5W optional |
| Częstotliwość pracy | 170 MHz – 900 MHz (konfigurowalny), zaniedbanie 503 MHz |
| Pasmo | 2 / 4 / 6 / 7 / 8 MHz |
| Odległość transmisji | THE > 15 km, Grunt > 1 km, NLOS > 600 m |
| Opóźnienie systemu | ≤300–500 ms |
| Bit Błędność | ≤10^-6 |
| Rozdzielczość wideo | 1080P / 60 fps; kompatybilność wsteczna 720P/480P |
| Szyfrowanie | AES128 (opcjonalny) |
| wymiary (TX) | 20 × 10 × 5 mm |
| Waga (TX) | 0.2 kg (w zależności od modelu) |
| Zasilacz | DC 5V–36V |
Aplikacje
- Transmisja wideo dronów i UAV
- Real-time HD video for aerial filming, geodezja, mapowanie, or search-and-rescue.
- NLOS capability ensures stable transmission in urban or forested environments.
- Produkcja nadawcza i medialna
- Portable or vehicle-mounted live transmission for news reporting, Sport, and events.
- Monitorowanie przemysłowe
- Remote monitoring of pipelines, place budowy, i infrastruktura krytyczna.
- Security and Emergency Response
- Provides live video feeds for police, walka z ogniem, or disaster relief operations.
- Mobile Applications
- Vehicle-mounted or handheld units for temporary setups and field monitoring.
Opcjonalne konfiguracje
- Anteny o dużym zysku: Extend range up to 20 km or more depending on terrain.
- Dostosowanie częstotliwości: Compliance with local regulations and optimal interference-free operation.
- Battery Upgrades: Extended battery life for mobile or UAV use.
- Multiple Receiver Support: Allows several receivers to operate simultaneously on different frequencies.
- OEM/ODM Solutions: Custom transmitter housing, częstotliwość, or interface tailored to project needs.
Ten COFDM Wireless Transmitter and Receiver system offers a wszechstronny, high-performance solution for professionals who require daleki zasięg, transmisja wideo HD w czasie rzeczywistym with secure and reliable operation. Whether used in UAV applications, Nadzór mobilny, lub nadawanie, zapewnia ten system małe opóźnienia, high-quality imaging, i elastyczne opcje wdrażania to meet the most demanding requirements.
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