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SDI/HDMI 700m Wireless Transmission System
◆ Professional WHDI (MIMO/OFDM) technology
◆ Uncompressed 3G/HD/SD-SDI and HDMI
◆ 2-ch SDI/HDMI embedded audio transmission
◆ 700 meters (LOS) transmission distance
◆ Less than 1ms latency
◆ 5.1-5.9GHz license-free operation frequency
◆ User configurable frequency bands
◆ Multicast – 1 transmitter to multi receivers
◆ Less than 63mW radio power
◆ AES 256bit encryption
◆ Mini transmitter designed for HDV camcorder
◆ Various DV plates for option
◆ All-metal housing, durable
◆ Pure hardware connection; Plug and Play
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WHDI wireless transmission system

SDI and HDMI, 700 meters

S-4914 is the broadcast industry wireless system, includes an S-4914T transmitter and an S-4914R receiver, with WHDI (OFDM) technology, supports uncompressed 3G/HD/SD-SDI and HDMI wirelessly transmitted in 700 meters scale, and with less than 1ms latency. The system is pure hardware connection, plug and play build-up, which is widely used in on-site shooting and director monitoring.


Input and Output

The transmitter S-4914T supports:
3G/HD/SD-SDI input ×1
The receiver S-4914R supports:
3G/HD/SD-SDI output ×1
The receiver SDI and HDMI are output simultaneously.
If both SDI and HDMI is input to transmitter, the receiver will give priority to output SDI signal.

Approx. 700m Effective Distance

Uncompressed SDI/HDMI, less than 1ms latency

In Line of Sight, the S-4914 wireless transmission system support approx. 700 meters effective transmission distance of uncompressed 3G/HD/SD-SDI and HDMI signal, and the latency is less than 1 millisecond.




Embedded Audio Transmission

The S-4914 supports SDI and HDMI embedded audio (ch-1 & ch-2) transmission.


5.1-5.9GHz Operation Frequency

License Free

The S-4914 wireless system runs at 5.1-5.9GHz License-free operation frequency. The frequency bands are user configurable and support at most 4 wireless channels in one location.
The radio power is less than 63mW and will not do harm to human bodies.






Multicast support

1 transmitter to multi receivers

You can set several S-4914R receivers at the same frequency bands as the 1 S-4914T transmitter to enable the multicast mode.

Power Supply and Installation

Various DV plates optional

The transmitter S-4914T is compact size designed, and equipped with DV plates to be powered by standard DV camera batteries. There’re following different kinds of DV plates for option:

Plate types
Compatible batteries
SONY NP-F970/770, SWIT S-8972, S-8970
SONY BP-U60/U30, SWIT S-8U63
Panasonic CGA-D54/D28 VW-VBD58, SWIT S-8D62, S-8D58, S-8D98
Panasonic VW-VBG6, SWIT S-8BG6
JVC BN-V428U, SWIT S-8428
JVC BN-VF823, SWIT S-8823
SSL-JVC50, SWIT S-8i50
Canon BP-945/970G, SWIT S-8845, S-8945
Canon LP-E6, SWIT S-8PE6

The receiver S-4914R is equipped with V-mount or Gold mount plates to be powered by batteries.
Both the transmitter and receiver can also be powered via the 5.5/2.1mm pole DC in socket of 6.5-17V input.

Standard Package

The wireless system package provides:
1x S-4914T Transmitter (F/U/P/B/J/V/I/C/E DV battery mount optional)
1x S-4914R Receiver (V-mount / Gold mount optional)
7x Antennas
1x Articulating arm trestle
1x Crab clamp
1x D-tap to 5.5/2.1mm pole cable
1x 5.5/2.1mm pole power adaptor
2x Flat screwdriver (for band configuration)

Input Video Formats

S-4914T transmitter supports the following input video formats:
InputSupported formats
SDISMPTE-425M1080p (60 / 59.94 / 50)
SMPTE-274M1080i (60 / 59.94 / 50)
1080p (30 / 29.97 / 25 / 24 / 23.98)
SMPTE-RP2111080psf (30 / 29.97 / 25 / 24 / 23.98)
SMPTE-296M720p (60 / 59.94 / 50)
SMPTE-125M480i (59.94)
ITU-R BT.656576i (50)
HDMI format1080p (60 / 59.94 / 50 / 30 / 29.97 / 25 / 24 / 23.98)
1080i (60 / 59.94 / 50)
720p (60 / 59.94 / 50)
480i / 576i

The S-4914R receiver output formats are the same with input formats

How to Get the Best Effect of Wireless Transmission

(1) Set the antennas of S-4914T and S-4914R at different angles to extend the transmission distance and achieve stable transmission quality.
(2) Set the receiver S-4914R as high as possible.
(3) Avoid walls, trees, water and any blockage as best as you can.

How to Use Several Sets in One Location

There’re 0-9 frequency channels that can be dial switch by users.
In one location, to avoid interference to each other, we recommended:
2 sets transmission:
Set 1: channel 3
Set 2: channel 4
3 sets transmission:
Set 1: channel 3
Set 2: channel 7
Set 3: channel 4
We don’t suggest that use 4 or more sets of wireless transmission in one location.
Frequency point in detail:

Dial Channels


Channel 0

5550 MHz

Channel 1

5590 MHz

Channel 2

5630 MHz

Channel 3

5670 MHz

Channel 4

5150 MHz

Channel 5

5190 MHz

Channel 6

5230 MHz

Channel 7

5270 MHz

Channel 8

5310 MHz

Channel 9

5510 MHz










Remark: all channels provide the central frequencies;
Bandwidth is 40MHz for each channel.

ModelTransmitter S-4914TReceiver S-4914R
Output/ 3G/HD/SD-SDI×1
SDI FormatSMPTE-425M1080P (60 / 59.94 / 50)
SMPTE-274M1080i (60 / 59.94 / 50)
1080p (30 / 29.97 / 25 / 24 / 23.98)
SMPTE-RP2111080psf (30 / 29.97 / 25 / 24 / 23.98)
SMPTE-296M720p (60 / 59.94 / 50)
SMPTE-125M480i (59.94)
ITU-R BT.656576i (50)
HDMI format1080p (60 / 59.94 / 50 / 30 / 29.97 / 25 / 24 / 23.98)
1080i (60 / 59.94 / 50)
720p (60 / 59.94 / 50)
480i / 576i
Wireless frequency5.1~5.9GHz
Radio modulesOFDM 16QAM
Max Transmission distanceApprox 700m (Line of sight)
Latency≤1 millisecond
Power consumption≤6.5W≤6.5W
Radio powerMax 63mW/
Input voltageDC / Battery:6.5~17VDC / Battery:6.5~17V
Working environmentTemperature: 0°C -+40°C
Dimension71×120×37 (mm)130×188×47 (mm)
Net weight(with antenna)300g797g

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Fax: +86-25-85805796
Address: 10 HengTong Road, Xin’gang, Nanjing
Economic and Technological Development Zone
Nanjing, 210038, P. R. China.




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