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The Hollyland Cosmo C1 SDI/HDMI Wireless Video Transmission System enables the wireless transmission of high-resolution video at up to 1080p60 over considerable distances of up to 1000 feet to a single receiver, facilitating versatile video monitoring and distribution for both studio and field productions. This kit includes a transmitter and a receiver that operate within the 5.1 to 5.9 GHz wireless frequency range.
Solid, Secure Wireless Transmission
The Cosmo C1 is capable of transmitting video over a distance of up to 1000 feet in a line-of-sight scenario, maintaining a low latency of 40 milliseconds through the use of the HEVC/H.265 codec. The system functions within the 5 GHz frequency band and employs AES-128 encryption to safeguard against video leakage. Additionally, it features smart channel selection, enabling the system to identify the clearest channel for transmission, along with HEVO, an adaptive frequency hopping technology, which ensures seamless retransmission without any frame loss.
Live Video Input/Output
- The transmitter provides a single HDMI input, a single SDI input, and a single SDI loop-through output, while the receiver includes two SDI outputs and one HDMI output.
- Additionally, the receiver is capable of live streaming through its USB Type-C output, which supports UVC applications on your computer connected to the Internet.
Versatile Power and Form Factor
- Both compact units also feature a bright, easy-to-read OLED display showing status and configuration
- Each unit can be powered via an L-series battery plate, DC input, or with an optional USB power supply via the USB Type-C port
- Four standard antennas and two mushroom antennas are supplied for the receiver and transmitter
- Each unit is easy to mount just about anywhere using its 1/4"-20 threads and included shoe mount adapter
Multiple Mounting Methods
The transmitter and receiver can be mounted using the cold shoe located on the front panel for horizontal installation, and the 1/4"-20 thread can be employed to attach the unit to a tripod or cage.
Auto Fan Mode
The COSMO C1 can adjust the fan speed according to the device's temperature, and it is so quiet it is hardly felt or heard.
Low-Battery Indicator
Both the Cosmo C1 transmitter and receiver feature a low-battery indicator located above the LCD on the side. When the indicator turns red, the device will deplete its battery within 20 minutes, providing you with ample time to either replace the battery or connect it to a power source.
Inputs/Outputs |
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Antenna I/O | Transmitter/Receiver: 2x RP-SMA Male |
Video I/O | Transmitter: 1x BNC (3G-SDI) Input Transmitter: 1x HDMI (Unspecified Signal) Input Transmitter: 1x BNC (3G-SDI) Loop Output Receiver: 2x BNC (3G-SDI) Output Receiver: 1x HDMI (Unspecified Signal) Output |
Embedded Audio | HDMI/SDI: 2-Channel |
Audio I/O | No |
Power I/O | Transmitter/Receiver: 1x USB-C (5 VDC / 2 A) Input |
Other I/O | Transmitter/Receiver: 1x USB-C 3.0 / 3.1/3.2 Gen 1 Input |
Encryption | Yes: 128-Bit AES |
Wireless |
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Wireless Range | 1000' / 304.8 m |
Channel Bandwidth | 20 MHz |
Frequency Range | US: 5.1 to 5.8 GHz |
Latency | 40 ms |
RF Power | 22 dBm |
RF Sensitivity | -80 dBm |
Wi-Fi | Yes |
Bluetooth | No |
Mobile App Compatible | No |
Cellular Support | No |
Format Support |
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Video Format | HDMI 1080p: 60/59.94/50/30/29.97/25/24/23.98 1080i: 60/59.94/50 720p: 60/59.94/50 576p: 50 480p: 60 SDI 1080p: 60/59.94/50/30/29.97/25/24/23.98 1080PsF: 25/24/23.98 1080i: 60/59.94/50 720p: 60/59.94/50 |
Audio Format | Not Specified by Manufacturer |
Timecode Support | Yes |
Power |
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Input Power | 6 to 16 VDC |
Battery | Receiver/Transmitter: 1x L-Series Mount on Fixed Plate |
Power Consumption | Transmitter/Receiver: 9 W |
Mounting |
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Tripod/Accessory Mounting | 1x Cold Shoe |
General |
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Environmental Resistance | No |
Dimensions | Transmitter/Receiver: 4.5 x 2.8 x 1.3" / 115 x 70 x 32 mm (Excluding Battery Plate) |
Weight | Transmitter: 7.55 oz / 214.00 g, Excluding Antenna Receiver: 7.41 oz / 210.00 g, Excluding Antenna |











