Hollyland Syscom 421 Single TX, 1x Transmitter, 1800Ft Range
SKU: 15287199103

Hollyland Syscom 421 Single TX, 1x Transmitter, 1800Ft Range

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Description

Hollyland Syscom 421 Single TX, 1x Transmitter, 1800Ft RangeThe Hollyland Syscom 421 Single TX is a standalone, production grade wireless video transmitter designed for multi camera live broadcasts, commercial sets, and large scale studio environments. Available as an individual expansion component, this transmitter is built exclusively to pair with Hollylands flagship Syscom 421 421S multi cam base receiver systems. It allows production crews to scale up their wireless camera footprint seamlessly. The unique

The Hollyland Syscom 421 Single TX is a standalone, production-grade wireless video transmitter designed for multi-camera live broadcasts, commercial sets, and large-scale studio environments.

Available as an individual expansion component, this transmitter is built exclusively to pair with Hollyland’s flagship Syscom 421 / 421S multi-cam base receiver systems. It allows production crews to scale up their wireless camera footprint seamlessly. The unique architecture of the Syscom 421 platform allows up to four independent transmitters to communicate over the exact same RF channel simultaneously, drastically optimizing wireless bandwidth and preventing the signal congestion common to multi-camera shoots.

Key Broadcast & Data Engineering Features

  • Advanced Bandwidth Optimization: Traditional setups require a separate wireless channel for every single camera, which quickly clogs up local airwaves. The Syscom 421 platform allows you to stack up to four of these transmitters onto a single RF frequency lane without causing crosstalk, signal degradation, or frame drops.

  • Dual Interface Hardware (3G-SDI + HDMI): Universally cross-compatible with professional broadcast rigs, field switchers, and mirrorless setups. The side panel houses one full-sized HDMI input alongside a rugged BNC 3G-SDI input. It natively transmits zero-compression video signals up to 1080p at 60fps.

  • Integrated PTZ Control Pass-Through: Features an industrial RS-485 / RS-422 serial interface port alongside an RJ45 Ethernet LAN port. This enables bidirectional data transmission, letting technical directors send remote PTZ (Pan-Tilt-Zoom) joystick commands or camera IP control data from the switcher tent directly to a robotic camera rig over a massive distance.

  • Wired Ethernet RTSP Pass-Through: The built-in network terminal supports local IP pass-through. It allows you to execute direct RTSP network pull and push streams across the local network backend—perfect for quick live-streaming applications or remote monitoring setups.

  • Hardware Wireless Tally Output: Features a dedicated 3-segment 3.5mm TALLY interface port. When connected to the base switcher, it drives a physical camera tally light to visually notify on-camera talent and operators which camera angle is currently "live" or "cued."

Technical Specifications Matrix

Feature Specification
System Role Expansion Transmitter (TX) Node for Syscom 421 / 421S Ecosystem
Max Transmission Distance Up to 1,800 Feet (550 Meters) Line-of-Sight (LOS)
Signal Latency Window Minimal 0.07 Seconds (70ms) processing speed
Wireless Core Carrier High-Frequency 5.1 GHz to 5.9 GHz Spectrum
Channel Bandwidth 40 MHz Data Highway
Video Format Handling 1080p, 1080i, and 720p at 60/50/30/25/24 fps
Power Infrastructure Sockets Fixed L-Series (NP-F) Battery Plate or 2-Pin LEMO (7–36V DC)
Total Hardware Power Draw Efficient operational curve drawing less than 12 Watts
Chassis Composition & Weight Heavy-Duty Industrial Metal / Approx. 431.5 grams (15.2 oz)

Power Infrastructure & Rigging Safety

The unit is housed in a rugged, heat-dissipating aluminum alloy frame and is engineered for continuous broadcast reliability. It features a dual-power design: a rear-mounted Sony NP-F (L-series) battery slot for handheld or roving setups, and a lockable 2-Pin LEMO barrel input supporting a wide input range (7V to 36V). This allows it to safely draw continuous power from a cinema camera's V-mount or Gold-mount battery D-Tap distributor block.

The bottom and side panels feature separate reinforced 1/4"-20 and 3/8"-16 female mounting threads. This ensures stable attachment to articulated magic arms, directors' cages, and heavy production camera top-plates without twisting or working loose during rapid pans.

⚠️ System Compatibility Boundary: This standalone transmitter does not include a wireless receiver in the box and cannot link to standard consumer-grade Hollyland Mars or Pyro receivers. It is purpose-built strictly to pair with the multi-channel Syscom 421 / 421S Receiver Base Hub. Up to four of these transmitters can sync to a single hub to deliver clean multi-cam monitoring straight to your main production video switcher.

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SKU: 15287199103

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L. Higgins
Carnegie, US
★★★★★ 5
Successful Epistolary Novel
Format: Kindle
When we first meet Sybil Van Antwerp, age 73, she is retired from law and spends a lot of time writing letters and emails. She also reads a lot and is interested in what her correspondents are reading. She has children and grandchildren, but she lives alone in Annapolis, Maryland, and doesn’t see her family very often. During the course of reading her correspondence, we very gradually learn about Sybil—her history and her present troubles. She is a complicated character and several times in reading The Correspondent I paused to ask myself what I thought of Sybil—did I like her? What about her kept me from the immediate response a reader usually has about the main character of a book? Even at the end of the book, I am still ambivalent about Sybil, but I certainly understand her much better. Sybil, herself, and the book have so many layers. There is true depth to the story. My book club took deep dives into it over a period of three weeks, and I don’t think we have sampled all the topics represented in this book. It is a wonderful novel for stimulating meaningful discussion. Neurodivergence is not called out or named, but it comes to mind in thinking about Harry, a child who is the son of a judge, a former colleague of Sybil. The boy doesn’t quite fit in socially with his peers, but he is brilliant. Sybil makes the perfect “pen pal” for Harry because they have some of the same characteristics. As a child she was punished for “insolence and rudeness,” but her parents were just trying to mold her into a polite young lady as expected by society. She was blunt and didn’t have many friends. There are so many other issues worthy of discussion, but they would most certainly bring up spoilers. I won’t do that to you. Readers should have the opportunity to see the story gradually emerge from the letters, including a continuing one that the reader doesn’t know to whom Sybil is writing. Sybil sets the word “stone” for secrets, and there are stones in this book making it a puzzle, a mystery of sorts—for the reader. As a reviewer, I tend to go quickly from one book to the next as soon as I have composed and published my thoughts. Characters in various books can even blend together. This is not the case with The Correspondent. The characters in this book, especially Sybil, have stayed with me and come to mind frequently as I go through my day. Virginia Evans has created a fictional world with impact. Just as Sybil needed time (years in her case) to process the events of her life, the reader will need time to process them and their effects on Sybil as well.
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Reviewed in the United States on March 15, 2026
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Aria
Draper, US
★★★★★ 5
Loving it so far
Format: Paperback, Format: Paperback
I really didn't know what to expect with a book full of names, but I love a murder mystery & needed more post work hobbies, so I thought this would be interesting & was I right. This book has been so engaging and keeps my mind in a good focused place instead of the usual dissociation after a stressful day of work or doom scrolling. It was nice to come up with my own little system as to how I would solve the clues on each page & keep track of everything. If you're interested in puzzles, or just need something interesting to keep busy, I feel this is a great concept to solve a mystery. 100% would recommend.
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Reviewed in the United States on June 1, 2026
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Amazon Customer
Fort Morgan, US
★★★★★ 5
Love it
Format: Paperback
Excellent book. Whole I was watching Tik Tok so.eone gave the answer and ruined my chance to finish it. I was within 1 to 2 days of solving it. Fun and challenging.
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Reviewed in the United States on April 23, 2026
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Reagan
Birmingham, US
★★★★★ 5
So much fun! And typos have been fixed!
Format: Paperback, Format: Paperback
This was so much fun! Some reviews will mention that the solution is spoiled at the end or there is some misspellings but it should be fixed. In the book you get an option to go to her blog. I 100% recommend checking that and it’s where you will check your answer! I got my whole family into this book and everyone is enjoying finding the name. I definitely recommend if you want to work on something that challenges your brain!
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Reviewed in the United States on May 27, 2026
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Sallyb
Los Angeles, US
★★★★★ 5
SO MUCH FUN!!
Format: Paperback, Format: Paperback
Just started it but.....This book has been so much fun. Not just for me but my husband and kids keep stealing it from me. So now I have to order more for them.... highly recommend if you are into mystery puzzles. Best one yet... can't wait to see more editions come out!!!
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Reviewed in the United States on May 1, 2026

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