Guide to the Best Wireless SDI Transmitter and Receiver

People shooting video can’t always be wired to the floor. Unless you’re shooting a sitcom from the comfort of an air conditioned set, odds are you need more portability from your recording. Whether you’re sending shots to the director in real-time or you’re doing final capture, it simply has to work.

And that’s why serious videographers and film projects made wide use of SDI transmitters. They’re perfect for getting wires out of your way, and wirelessly sending flawless video signals from the transmitter to the receiver.

选择无线SDI发射器和接收器

There are about half a dozen ways you might decide to transmit video signals from one place to another. Some of the most obvious choices are portable microwave broadcasters, unlicensed Wi-Fi broadcasters, bonded cellular casters, and 60GHz and 70Ghz transmission kits.

决定正确的SDI发射机和接收机for your specific use is a critical step in finding the right technology appropriate to your budget and application. But for most people, it will be unlicensed Wi-Fi broadcasters or 60GHz kits which offer the most. In terms of both portability, ease of use, and value. You can avoid the need to use a license, like microwave-based transmitters, and you don’t end up enduring a bunch of recurring costs, like film technologies of the recent past.

The good news is that there are plenty of those kinds of SDI transmitters out there. And many of them use the bleeding edge technology necessary to make their shots seamless, whether you’re shooting in a Wi-Fi ridden café in downtown New York, or a dusty park in Istanbul.

借助SDI发射器和接收器，所涉及的基本技术基本上与家庭剧院发生的事情相同。但是SDI发射器需要额外的便携性和可调节性来适应即时更改，并且它们需要一定程度的毫不妥协的视频质量，而在传输过程中，一个IOTA不会耗尽。为了实时拍摄，SDI发射器应该能够与HDMI横流，使您能够将信号发送到没有延迟延迟的情况下。

Wi-Fi网络在家

The 2.4GHz Wi-Fi band is space designated by the FCC as unlicensed airspace. What that means is basically anyone and everyone can broadcast on that band without having to seek a special permit from the government. Unfortunately, the 2.4GHz band has become packed with traffic, which makes using an SDI transmitter in some areas impossible. You don’t even have to enter highly populated areas to see this phenomenon in action, even a few overlapping signals can quickly reduce performance for everyone.

优秀的SDI发射器应该能够让您加入5GHz乐队。该乐队的使用量要比2.4GHz频段少得多，而2.4GHz频段转化为干扰较少。5GHz频段在物理上还具有更多可用的空间来携带数据，这就是使其能够在2.4GHz能够的能力之外进行带宽吞吐量的原因。此外，5GHz频段还提供了更多的非重叠渠道，在5.15 GHz和5.825 GHz之间最多24个个人选择。

但是，2.4GHz频段的一个优点是它在墙壁上具有很大的传播，尤其是与5GHz相比。这一详尽的利弊和情境能力清单就是为什么出色的SDI发射器和接收器需要支持2.4GHz和5GHz频段的原因。您是否需要一个或另一个拍摄的镜头都不是问题。问题是您是否会围绕其他Wi-Fi网络拍摄，或者您是否会在墙壁和类似障碍物周围射击。奇怪的是，任何需要无线的人都会同时做。

Wi-Fi Networks Abroad

如果您在国际上拍摄，则需要更多的特殊能力。例如，您需要能够调整无线信号以匹配国际标准。对于在人口稠密的地区进行Wi-Fi流量的拍摄，可调节性对于在遵守当地法律的同时保持视频质量至关重要。

Finally, You’ll want to think about how the transmitter is powered, to know how much time you can get from a single battery. Depending on where and when you’re doing shoots, you may not be able to quickly or easily replace the esoteric battery pack contained inside your average SDI transmitter and receiver. A more ubiquitous design when it comes to power can is often highly underestimated.

Ikan BZ1000 PRO

TheBZ1000-PROis the latest of the Ikan Blitz transmitters. In spite of its ability to carry uncompressed data with ease, the Blitz is quite lightweight and portable. For Steadicam operators, or people working with similar wireless follow systems, the BZ1000-PRO seems poised to become the new golden standard.

In short, it’s great for being able to move around freely without having to worry about losing your signal, or having the signal quality drop down to unacceptable levels due to the non-compressed nature of the transmission.

构建与设计

In terms of connectivity, the BZ1000 PRO can support a massive 1,000 feet of connectivity, provided only that the transmitter and receiver share line of sight. As that line of sight is compromised, you’ll see the effective range deplete accordingly.

BZ1000 Pro使用Sony L系列电池运行，很容易找到和更换。Pro还支持常见的3G-SDI端口以及基本的HDMI 1.3端口。这两个选项都可以提供相同的无缝1080p内容。它通过没有不适当的延迟而出现，因为闪电器单元可以将信号从SDI转换为HDMI，也可以通过相反的方式将信号转换为HDMI。

Production Capacity

The maximum supported resolution for the BZ1000 PRO is 1080p with 60 frames per second. That ought to exceed adequacy for virtually all professional production needs. The BZ1000 PRO is absolutely wonderful at providing uncompressed video, but it’s true ease of use is actually hiding away in the unique Ikan mounting system.

It involves a variety of mounting joints smartly positioned around BZ1000 PRO, so operators have a greater range of options for how and where they can setup their gear. For personal preference, and for adaptability during shooting, that mounting system alone can make the BZ1000 drastically more useful than a number of comparable SDI transmitter and receivers.

Other Considerations

The Ikan includes a hard-shell carrying case, half a dozen antennas, and basic mounting gear. This is basically everything you need to get started, as long as you don’t have any needs for obscure types of antennas.

Cinegears Ghost Eye 600M

Cinegears is all about wireless transmission. It’s their entire brand. And within theCinegears Ghost Eye 600M, you’ll find an ideal SDI transmitter for essentially all forms of gimbal and Steadicam work. Anywhere you need to send a video signal without taking a wire in tow, the Ghost Eye 600M can follow. At least for about 600 meters.

构建与设计

The Ghost Eye 600M has a relatively mundane external experience, it looks precisely like the high quality equipment it is. The transmitter is scarcely 6-inches tall, with the receiver being about 15% larger. However, each end of the kit tends to have considerably greater height clearance than 6″ due to the lengthy antennas attached to the end. Internally, you’ll find HDMI and SDI Cross conversion is available, along with essentially all the critical data streaming features you could ever need for lossless video production.

Production Capacity

Ghost Eye 600m提供1080p视频传输，每秒60帧，带有10位颜色。这些高标准保持在相当长的距离上。就像其名称所暗示的那样，幽灵眼600m的半径为600米。似乎没有努力，未压缩的视频被1毫秒的延迟传输。

Ghost Eye 600m的最大带宽约为300 MB/s，足以捕获1080p内容的精度。值得注意的一件更有价值的事情是，Ghost Eye 600m如何在所有幽灵眼模型（包括其较小的150米接收器）之间享有交叉兼容性。

That makes it easy to integrate new Ghost Eye equipment into your shoot, or pair up existing equipment with ease. In fact, the 600M supports an unlimited number of Ghost-Eye receivers, you don’t have to worry about running into any limitations beyond cost.

Other Considerations

The Ghost Eye 600M includes a V-mount plate, the necessary charging cables, seven high capacity antennas, two mushroom antennas, and a hard-shell waterproof case with protective foam lining. The mushroom antennas have been circularly polarized, making them great for expanding the distance and angle of a shot. The Ghost Eye 600m also includes a three-year warranty from Cinegears.

For people with a more formidable production budget, one more thing to note is how individual pieces of Cinegears equipment can be picked up from the manufacturer on an a la carte basis. So if your receiver is damaged or lost, you can replace it without having to buy the entire kit again. In many cases you may even be able to rent the spare part from Cinegears.

Innox 4 Media Pro

TheInnox 4 Media Prois a 5 GHZ SDI/HDMI Wireless transmission system. Like you need for professional production, the Innox 4 Media Pro supports uncompressed audio and video. And like you need from a great wireless setup, it supports a reasonably extensive 120-meter or 393-foot range. While the Media Pro isn’t going to win an industry award for strongest SDI transmitter, it’s more than adequate for people working within a smaller transmission radius.

构建与设计

Pick up the Innox 4 Media Pro for a moment. On the side of the transmitter, you’ll find two stick antennas, and 5 internals antennas on the receiver. Those are useful because they help you configure the ISM band, and precisely accommodate the global differences in wireless broadcasting. Whether you’re shooting in the developing world or the developed world, that kind of versatility can be essential.

Along the sid of the transmitter and receiver, you’ll find the HDMI and SD/HD/3G SDI ports, both for input and output, have been cleanly placed and clearly labeled. Their labeling includes precise color coding for a rapid setup in various lighting conditions. And behind the basic rational design, the AES-128 encryption air interface keeps your video stream from being interrupted by nearby signals.

Production Capacity and Other Considerations

Innox 4 Media Pro极大地利用了人口稠密的5 GHz-5.9GHz ISM频率。它支持最多10个通道设置频率，您可以使用模拟旋钮切换。无论您是试图与其他Wi-Fi网络共存，还是拍摄中其他设备，这些控件都使其变得容易。

一个强项赞成媒体专业its ability to accept a wide range of DC power, allowing it to adapt to most types of camera batteries. If you’re ever doing shoots in uncertain conditions, and don’t necessarily have access to your preferred brand of batteries, that added adaptability can mean the world.

Finally, the Innox 4 Media Pro includes a metal case to help protect from heat. It doesn’t currently have FCC approval, but Innox has been working on approval for a while, so it’s only a matter of time.

在3个专业SDI发射器/接收器之间选择

TheIkan BZ1000 PROprovides an incredible 1,000 feet of connectivity, and all the essential HDMI SDI ports and cross conversion to make the BZ1000 PRO easy to use. It’s the winning choice for anyone who needs an extensive range of connectivity above all else. If you’re dealing with huge transmission distances, like you might for shooting a nature documentary, it’s a great pick.

TheCinegears Ghost Eye 600M这些高度便携式套件中的任何一个都具有最大的便携性。有了高达600米的稳定未压缩1080p数据流，很难找到Ghost Eye SDI发射器无法做到的东西。更好的是，幽灵眼产品在该系列的其他成员之间也具有很强的兼容性。如果您认为自己可能参与了大规模的项目，那么可以轻松地看到能够轻松扩大当前设备的价值。对于业余爱好者和专业人士来说，600m值得一看。

And last but not least, theInnox 4 Media Pro。该专业人士使用了更为适中的400英尺连接范围，但是在高端CineGears设置上，您可以在基本上找到所有相同的高端功能。它提供多功能适应性，尤其是关于如何为设备供电。尽管它不是市场上最强大的SDI发射器，但对于可以使400英尺范围工作的人来说，这是一个不错的选择。