ዝርዝር ሁኔታ
20W PA Transmitter Dimension
የሚጠየቁ ጥያቄዎች
ጥ. የቪዲዮ መፍታት ምንድነው??
አንድ: የ HDMI 1080.
ጥ. የማስተላለፊያው ኃይል ከፍተኛ ነው??
አንድ: ለ ማሠራጫ, የተለያዩ PA (የኃይል ማጉያ) ውስጥ, አሁን ያለው የተለየ ነው።. 20ወ 6-7A, 10ወ 5A, 5ወ 3አ, 1-2ወ 1.6 ኤ
ለ ተቀባይ, የአሁኑ ብቻ ነው 0.3አንድ (300MA)
ጥ: ልክ 10 ኪ.ሜ ብቻ ያስፈልገናል, ምን ያህል ፓ ይመከራል?
አንድ: አስተላላፊዎ እና ተቀባይዎ መሬት ላይ ጥቅም ላይ እንደሚውሉ ግምት ውስጥ ያስገቡ, ከድሮኖች በተለየ, የማስተላለፊያው እና የመቀበያው ቁመቶች በጣም የተለያዩ ናቸው. ለ 10W PA አስተላላፊ ለመጠቀም ይመከራል 10 ኪሎሜትሮች. You also need to consider that your receiver is installed on the car, and it keeps moving at high speed at any time. Only a high-power transmitter can ensure the signal stability at the receiver.
ጥ: What frequency is better? 2.4G or 5.8G?
አንድ: The frequency range of Cofdm is 170~860Mhz.
We also have products that use 2.4G or 5.8G, but the range of these two intervals is the same as the frequency of WiFi, which will cause the transmission to be greatly interfered by WiFi, and the transmission distance will be greatly shortened.
If there are digital TV DVB-T signals locally, try to avoid frequencies in these ranges when selecting frequencies.
ጥ: Can customers adjust the frequency by themselves? If sometimes the frequency is occupied.
አንድ: The default center frequency is 595Mhz, generally there is +/-15Mhz bandwidth, which is 30Mhz, and the frequency range can be adjusted. (580-610ሜኸ).
Beyond this range, it is necessary to change the antenna and PA customized according to this center frequency.
ጥ:How does the customer adjust the frequency of the transmitter or receiver? Is there any software to change the frequency?
አንድ:It's very easy, the transmitter can use the assistant board next to the picture, and the receiver's assistant board is on the fuselage, with a screen and buttons.
But it is not recommended for customers to adjust, because sometimes he changed the parameters of the transmitter but did not change the parameters of the receiver, saying that he could not receive the signal.
ጥ: Can I adjust the power amplifier on the transmitter?
አንድ: The user can reduce the actual output power by increasing the impedance of the high power, ነገር ግን ዝቅተኛ ኃይል ፓ ያለውን ማስተላለፊያ መጨመር አይችልም.
ለምሳሌ, 10W PA ወደ 5W PA ሊቀየር ይችላል።, ነገር ግን 5W PA ወደ 10W መቀየር አይቻልም.
- ትክክለኛውን የመተላለፊያ ርቀት ማንም ሊነግርዎት አይችልም. ምክንያቱም የማስተላለፊያ ርቀቱ የሚወሰነው በትራንስሲቨር አንቴናዎ ቁመት እና በእንቅፋቶች አይነት እና ውፍረት ላይ ነው።, የተላለፈው ምልክት መበታተን ይቻል እንደሆነ, አሁን ባለው ድግግሞሽ ውስጥ ጣልቃ መግባት አለመኖሩን, ወዘተ.
- በመሃል ላይ ዛፎች ወይም ተራራ አለ, እና የማስተላለፊያው ርቀት የተለየ ነው.
- ትክክለኛውን የመተላለፊያ ርቀት ለእርስዎ መንገር አስቸጋሪ ነው, ግድግዳዎቹ እንኳን ውፍረት አላቸው, በአጠቃላይ 500-1000 ሜትር.
- እባክዎን የእኛን የሙከራ ቪዲዮ ይመልከቱ, ተስማሚ ነው ብለው ካሰቡ, ለሙከራ ናሙና መግዛት ይችላሉ, ካልረኩ, you can return it to us.
- Here is a form for COFDM PA and LOS and NLOS transmission distance for your references.
ፓ | ያለው | NLOS |
500MW | >10ኪ.ሜ | <300ሜትር |
1ወ | >30ኪ.ሜ | <500ሜትር |
5ወ | >60ኪ.ሜ | <1500ሜትር |
20ወ | >120ኪሜ | <3000ሜትር |
50ወ | >200ኪ.ሜ | <5000ሜትር |
100ወ | >250ኪ.ሜ | <10ኪ.ሜ |
Now COFDM-908T supports H.264, not H265.
Max support 1080 50P. We have actually tested that at 1080P60, the frame will be stuck, or the recognition will be incomplete
- Power consumption is equal to current times voltage. ለምሳሌ, for a 10W transmitter, the current is 5.5A, and the voltage is 12V, so its power consumption is 66W.
- 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 ሰዓቶች.
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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.
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Not on the transmitter. Because COFDM is a one-way transmission, only the receiver can receive the signal strength of the transmission and show them on the screen. If the transmitter needs to see these signals, it is necessary to add a set of data transmission devices to transfer the status signal from the receiver to the transmitter and display them by the signal light.
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The transmitter and receiver of two-way transmission can have this function, and it is recommended to choose a bidirectional transmission device.
- First of all the frequency is correct.
- In order to achieve the best performance of the transmitter, power amplifier and antenna, they are generally customized according to a central operating frequency point, and they can all work within a working frequency range, generally ±15Mhz. That is to say, when the central operating frequency is 290Mhz, the working range of the transmitter is 275Mhz~305Mhz. So it meets the frequency range of 280~300Mhz required by customers.
- አዎ, the wireless video signal reception is improved by using Yagi and omni-directional antennas.
- አዎ, we can build the transmission of telemetry and video in COFDM-908T.
- አንደኛ, the 10-watt RF linear amplifier and the 20-watt RF linear amplifier use the same cavity, which is machined by a CNC mill.
- CNC milling machines are not only expensive but also take a long time to process. The 20W and 10W cavities are universal, so they can be used with each other. For faster delivery, this character was not changed and used directly.
- This product actually has 20 ዋትስ. 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)
- Test video at youtube: https://www.youtube.com/shorts/jfNoZeb1BIA
- Here are some correspondences between the output power and the dBm parameters displayed by the instrument.
- 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
መደበኛ አራት የኤችዲኤምአይ ቪዲዮ ግብዓት እና አንድ HDMI የውጤት ሳጥን
አራት የካሜራ ቪዲዮዎችን ወደ አንድ ቪዲዮ መከፋፈል ቀላል ከሆነ, ከማስተላለፊያው ፊት ለፊት አራት የኤችዲኤምአይ ግብዓቶች እና አንድ የኤችዲኤምአይ ውጤት ያለው ሳጥን ማከል ይችላሉ።. ይህ ማለት በተቀባዩ ላይ ያለው ማሳያ ሁልጊዜ እያንዳንዱን ቪዲዮ በስክሪኑ ሩብ ላይ ያሳያል.
አዎ, our dual antenna RF input receiver supports diversity. You can use two yagi directional antenna on our cofdm wireless video receiver.
For better signal reception, it is recommended to have one Yagi directional antenna and one omnidirectional antenna installed on the receiver.
It can be used by photographers. Currently supports 1080@60P, 1080ሁለት ቻናል ቪዲዮ ግብዓት / ኢንኮዲንግ / በተመሳሳይ ጊዜ ማስተላለፍ, 1080ሁለት ቻናል ቪዲዮ ግብዓት / ኢንኮዲንግ / በተመሳሳይ ጊዜ ማስተላለፍ
በአሁኑ ግዜ, it does not support 1080i, nor does it support 4K transmission.
This HDMI Wireless Video Transmitter and Receiver is the perfect solution for streaming high-definition video and audio from your home theater system to any room in your house. With its advanced wireless technology, you can easily connect your HDTV, Blu-ray player, gaming console, or other HDMI-enabled device to your TV without the need for messy cables.
The transmitter and receiver are both small and compact, making them easy to install and hide away. The transmitter supports up to 1080p resolution and 5.1 surround sound, so you can enjoy your favorite movies and shows in stunning clarity.
The receiver also supports up to 1080p resolution and 5.1 surround sound, so you can enjoy your favorite movies and shows in stunning clarity. The transmitter and receiver both feature a range of up to 30 ሜትር, so you can enjoy your media from any room in your house.
The transmitter and receiver also feature a low latency mode, so you can enjoy your media with minimal lag. With its easy setup and reliable performance, this HDMI Wireless Video Transmitter and Receiver is the perfect solution for streaming high-definition video and audio from your home theater system to any room in your house.
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COFDM Relay Repeater ሞጁል ለድሮን UAV ገመድ አልባ ቪዲዮ አስተላላፊ እና ተቀባይ Vcan1870
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22ኪሜ ገመድ አልባ ቪዲዮ ዳታ የ RC መቆጣጠሪያ አገናኝ ለአይ ፒ ኤተርኔት ካሜራ አስተላላፊ እና ተቀባይ fhss Vcan1806
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50-100ኪሜ ድሮን ሽቦ አልባ ቪዲዮ ዳታ መቆጣጠሪያ አስተላላፊ እና ተቀባይ 2W-5WPA 1.4G-2.4G Vcan1805
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አነስተኛ መጠን ኤችዲኤምአይ ኢንኮደር ቦርድ በአይፒ ኢተርኔት RJ45 የውጤት ሞጁላተር H.265 HTTP RSTP UDP ONVIF TCP
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COFDM ሞዱላተር ሞዱል ኢንኮደር ዲኮደር HDMI CVBS AV ግቤት AES 256 FHD RF ዥረት
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ሽቦ አልባ ቪዲዮ አስተላላፊ እና ለካሜራ ተቀባይ, HDMI ኤችዲ H265 264 ኢንኮደር 1 ዋ / 2.5 ዋ PA 1080P60 Vcan1726
Can you change the SMA RF connector to the N-Female connector for stable contact?
አዎ, because the metal is produced by a CNC machine. So we can customize it for you. Even add more cooling holes.