SKU: 62863978871

Hollyland Syscom 421-2TX, 2x Transmitter, 1x Receiver, 15x Antenna, 2x Arm Mounts

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Description

Hollyland Syscom 421-2TX, 2x Transmitter, 1x Receiver, 15x Antenna, 2x Arm MountsThe Hollyland Syscom 421 2TX (2x Transmitter, 1x Receiver) bundle is a professional, multi camera wireless video transmission kit engineered specifically for mid sized live broadcasts, multi cam live streaming, and commercial video sets. By utilizing a multi channel receiver hub, this system allows two independent cameras to broadcast real time video to a single central receiver over a single RF channel, drastically saving valuable wireless bandwidth

The Hollyland Syscom 421-2TX (2x Transmitter, 1x Receiver) bundle is a professional, multi-camera wireless video transmission kit engineered specifically for mid-sized live broadcasts, multi-cam live streaming, and commercial video sets.

By utilizing a multi-channel receiver hub, this system allows two independent cameras to broadcast real-time video to a single central receiver over a single RF channel, drastically saving valuable wireless bandwidth and preventing frequency congestion on a busy set.

Core Hardware & Kit Inventory

  • 2 × Syscom 421 Transmitters (TX): Mounted onto your individual camera rigs. Each unit accepts both 3G-SDI and HDMI video feeds up to 1080p60 and transmits them over a massive 1,800-foot (550m) Line-of-Sight (LOS) range.

  • 1 × Syscom 421 Multi-Cam Receiver (RX): Positioned at your director's station or video switcher booth. It simultaneously picks up both video feeds and outputs them across 2 dedicated HDMI and 2 3G-SDI ports.

  • 15 × High-Gain 5GHz Antennas: This generous count is mathematically designed for field redundancy. Both transmitters and the receiver require 4 antennas apiece to run their high-throughput MIMO (Multiple-Input Multiple-Output) wireless arrays (4 x 3 = 12 antennas in active use). Hollyland provides 15 total antennas in this package so you have 3 complete spares on hand if an antenna breaks or goes missing during a chaotic build.

  • 2 × Articulated Magic Arms (7-Inch): Heavy-duty friction mounts used to securely clamp each of the two transmitters onto your cameras' cages, top plates, or cold shoes without slipping during rapid pans.

Pro-Tier Multi-Cam Integration Features

  • Bidirectional PTZ & Tally Control: The system passes data back and forth seamlessly. It includes integrated RS-485/RS-422 serial links and RJ45 network terminals, allowing a technical director at the switcher booth to send remote PTZ (Pan-Tilt-Zoom) joystick commands back to a robotic camera rig. It also pushes physical Tally light data to notify operators and on-camera talent which feed is currently "live."

  • Wired Ethernet RTSP Streaming: The receiver hub features a native LAN port. You can plug it straight into a local router or streaming computer to execute direct RTSP network pull-streams, simplifying workflow routing into software switchers like vMix or OBS Studio.

  • Flexible Broadcast Power Solutions: Built for continuous deployment. Every unit features a rear-mounted Sony NP-F (L-Series) battery plate for mobile or handheld operations, alongside a locking 2-Pin LEMO DC barrel input (7–36V) to draw robust, continuous power directly from a cinema camera’s V-mount or Gold-mount D-Tap distributor block.

Technical Specifications Matrix

Feature Specification
System Scalability Limits Out-of-the-box 2TX setup (Scalable up to 4TX total to a single RX)
Maximum Operating Range Up to 1,300 Feet (400m) standard / 1,800 Feet (550m) Max Line-of-Sight
End-to-End System Latency Minimal 0.07 Seconds (70ms) processing window
Wireless Core Carrier 5.1 GHz to 5.9 GHz High-Throughput Frequencies
Video Processing Resolutions 1080p, 1080i, and 720p at 60/50/30/25/24 frames per second
Chassis Build & Durability Industrial, heat-dissipating Aluminum Alloy

💡 On-Set Channel Allocation Tip: Because this system encodes multiple video links onto a single 40 MHz channel block, it makes multi-camera operations incredibly clean. If you need to expand your coverage down the road, you do not need to buy a completely new wireless system or worry about frequency coordination—you can purchase individual standalone Syscom 421 transmitters later and sync up to four cameras total directly into this exact same receiver hub.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 62863978871

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David Del Valle
Louisville, US
★★★★★ 5
Good value for the money
Style: 5000IU, Size: 360 Count (Pack of 1)
Odor was not detectable, gentle on the stomach and easy to digest, double check before taking this supplement; it may interact with certain medications, otherwise an excellent product. Good value.
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Reviewed in the United States on May 19, 2026
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Rosa
West Palm Beach, US
★★★★★ 4
Great value, easy to take, and Great quality
Style: 2000IU, Size: 360 Count (Pack of 1)
This is one of those no-fuss supplements you can actually stay consistent with. The softgels are small, easy to take, and don’t leave any weird aftertaste. Love that it’s in olive oil for better absorption.
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Reviewed in the United States on May 5, 2026
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Mh
Whiting, US
★★★★★ 5
A great supplement!
Style: 5000IU, Size: 360 Count (Pack of 1)
Great value and it's working very well. Highly recommend!
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Reviewed in the United States on May 15, 2026
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RAM
Houston, US
★★★★★ 5
There is a difference in brands
Style: 5000IU, Size: 360 Count (Pack of 1)
Thank you for allowing me to try your NatureWise Vitamin D3. There are indeed so many reasons why we should supplement Vitamin D. It is necessary for so many crucial processes in our bodies; from helping us absorb enough calcium and helping us have strong bones and teeth. With everything that is literally "going around" these days, it is crucial that we maintain an efficient and effective immune system. We need Vitamin D to do that. For me personally, as a 25+ years ago back surgery patient who is still very mobile, one of the ways I benefit from this particular supplement is helping to keep inflammation at bay so that I am able to be more comfortable and more active. I noticed a big improvement when I started taking this NatureWise brand. They apparently make it more "user friendly" to the body. What's the point in taking other brands of anything if your body can't use it, or worse, has to figure out how to try to get rid of it? I have had this same experience with the other NatureWise products I have chosen to use. Another of the most important reasons we need adequate Vitamin D, is so that our brains will stay healthy so that we will have less likelihood of developing Alzheimers and/or Dementia. Sound supplementation from a company that uses only quality and natural ingredients is not optional but rather crucial to every person. A person can change their destiny by changing what goes "down the hatch". Whatever your current lifestyle, you can start right now. The right supplements, along with careful and selective nutrition, can literally re-map a person's health. I trust NatureWise to help me in my journey to overcome and persevere so that I will have quality to go along with my quantity of life. I encourage everyone to use the products NatureWise offers. Selecting their products saves me time and effort of looking up all of the ingredients listed on some other brands only to find out that those ingredients are basically trash to my body. It is so important to note that all Vitamin D (or any other) supplements are not created equal. NatureWise is a good company that seems to make careful decisions about the sources, ingredients and processes used in all their products. Thank you NatureWise for providing us a Vitamin D3 supplement using certified organic, cold pressed, extra-virgin olive oil for maximum absorption. According to world-renowned Dr. David Perlmutter, neurologist, "Vitamin D plays a fundamental role in brain health, immune function, and inflammation. According to Dr. Perlmutter, vitamin D influences the expression of more than 913 genes. Sadly, a vast majority of people are dramatically deficient in this critical steroid hormone, in large part because they've been fooled into fearing sun exposure. You've also been deceived into fearing cholesterol, which is another critical component of health. "Obviously, sunshine makes vitamin D in your body from some precursor. When I ask my patients what is that precursor, nobody seems to know. I tell them it's this horrible thing called cholesterol, and their eyebrows go up," he says. "Cholesterol is so drastically important for health, because (1) it's the precursor for which you make vitamin D and (2) it's a fundamental compound of every cell in your body and made by every cell in your body. It's a brain antioxidant. It's a precursor for all the steroid sex hormones – it's fundamentally important."" I have recently became acutely aware of the prevalence and cruelty of Brain diseases. My genius-level, go-getter Mother was diagnosed with a rare form of Dementia. As we know, Dementia and Alzheimers is essentially untreatable and incurable. PREVENTION, however, IS possible, no matter what may be in our "genetic tree". In addition to my mission to obtain as much information to help my mom, I am seeking any solid information that will help me to avoid such a horrible end. More from Dr. Perlmutter: "It's important to realize that, despite what the media tells you, your brain is not "programmed" to shrink and fail as a matter of course as you age. We now know that every activity in which you engage—be it exercise, the foods you eat, the supplements you take, your personal relationships, your emotional state, your sleep patterns—all of these factors dramatically influence your genetic expression from moment to moment. Any given gene is not in a static "on" or "off" position. Neither are they deterministic. You may be a carrier of a gene that never gets expressed, simply because you never supply the required environment for it to turn on. "We interact with our genome every moment of our lives, and we can do so very, very positively," Dr. Perlmutter says. "Keeping your blood sugar low is very positive in terms of allowing the genes to express reduced inflammation, which increase the production of life-giving antioxidants. So that's rule number one: You can change your genetic destiny. Rule number two: you can change your genetic destiny to grow new brain cells, specifically in the hippocampus... Your brain's memory center regenerates. You are constantly growing new brain cells into your 50s, 60s, 80s, and 90s – throughout your lifetime – through a process called neurogenesis. That said, these two ideas come together because you can turn on your genes through lifestyle choices that enhance neurogenesis and that enhance regrowth of cells and expansion of your brain's memory center. This was proven by researchers recently. They demonstrated that there are factors under our control that can make that happen.""
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Reviewed in the United States on September 5, 2014
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Verified Purchase
Lord Pumpking
Port Orchard, US
★★★★★ 5
Best Vit D on market. Dont change the ingredients
Style: 2000IU, Size: 360 Count (Pack of 1)
Got my vitamin D lab levels from 19 to 36 30 and up is normal Actually works with blood lab results proof
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Reviewed in the United States on June 1, 2026

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