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.

Shipping Notes
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SKU: 15287199103

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Danica Mandic
Omaha, US
★★★★★ 5
Soft comfortable very good pillow
Size: King (Pack of 1), Color: White
I really love my new pillow it's great and comfortable. Yes, it has a little smell, but if you wash the pillowcase and put the pillow on the window for a day you won't notice anything anymore.
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Reviewed in the United States on May 18, 2026
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Zachery Jeffries
Whiting, US
★★★★★ 5
Best place for head
Size: Queen (Pack of 1), Color: White
Do you love not getting sleep and sweating all over your pillow at night when you are asleep? If so then don't buy this pillow! If you want a good nights sleep and cool pillow like me this is the one. Ive always been ehh towards spending so much on a pillow but its 100% worth it, I sleep so much better and it forms to my head and keeps me cool at night. Great support even for my big head and comes with a bag of extra stuffing if you want to have a little more firmer pillow. Highly recommend
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Reviewed in the United States on April 4, 2026
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Verified Purchase
Loves_2_read
Lake Worth, US
★★★★★ 3
Oversized
Size: Queen (Pack of 2), Color: White
I have chronic neck pain. I am forever buying new pillows. Sometimes I think I found the perfect pillow but then three months later they’re losing their loft. I thought I would give these pillows to try since the stuffing is removable. Now these pillows are really oversized. To the point where I thought that they had sent me king-size pillows but I double checked the packaging and they were Queen. I ended up having to buy king-size pillowcases for them because they just barely fit in the queen size and the pillowcases would always end up pulling back from the edge. So that’s a negative one star there. Now I’ve been sleeping on these pillows for a while and they have held up well. I did end up removing some of the stuffing because it was just too much. I’m a side sleeper and when I use this pillow, it does a good job of keeping my neck in alignment. However, the pillow tends to migrate up as I sleep. Or I tend to slip down off the pillow, either or. So that’s why I’ve removed a second star. Maybe if I removed more stuffing that wouldn’t happen, but then I feel like the loft would be too little. I will say that these provide great support when sitting up in bed reading or watching TV. So would I buy them again? Probably not. Am I going to keep using them? Yes
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Reviewed in the United States on December 23, 2025
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Nick
Battle Creek, US
★★★★★ 5
Amazing - Stop Scrolling and Buy This Pillow
Size: Queen (Pack of 1), Color: White
I have been an Amazon customer ever since the very beginning, and this is my first review. Not because I haven’t purchased tons of amazing things (and a few bad ones), just never felt the need. However, I researched pillows for longer than I care to admit, and decided on this one. I’ve had it for about six months and absolutely love it. No lie, I genuinely look forward lying my big head on it after a long day. I am a side sleeper, but flip flop all around through the night and it’s great in every position. Pros: Stays nice and cool, which is soothing regardless of the time of year. Has a sort of quilted textured pattern on the zip up cover, gives it a luxury feel, that breaths nicely even when a pillow case is added. The fill is fully adjustable to your preference. I knew it came with extra filling but was worried it would not be enough. Wrong. It was very full and I ended up taking some out until it was perfect. It comes vacuum sealed and suggests it may take some time to fully take shape. However, I found it to be about 90% almost instantly and was sleeping on it a couple hours later. There was no unpleasant scent sometimes associated with memory foam items. The foam itself is very nice, a mix of what appears to be shredded and cotton candy cloud like. Very brilliant idea, as it is somehow supportive, soft and firm all at once. The affordability of this pillow compared to some of the others in this category can’t be overstated. Oh, and the packaging was very thoughtfully and securely done. If you are like me, an over thinker, I would suggest just taking this for a spin. It’s amazing. I’m not a bot, or working for the company. I’m just truly satisfied, love this pillow, and have been sleeping great.
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Reviewed in the United States on April 6, 2026
K
Verified Purchase
k25
Cuba, US
★★★★★ 5
It's the perfect pillow!
Size: Queen (Pack of 1), Color: White
I purchased this pillow specifically for its customizable fill feature, which allows you to add or remove stuffing to suit your personal comfort needs. Due to the unique curvature of my cervical spine—forward at the neck rather than backward—I require a soft, semi-flat pillow rather than one that is thick or firm. Additionally, I often experience ear discomfort by morning, so a gentler surface is essential. Upon adjusting the fill, I was pleasantly surprised by the generous amount of stuffing included. There was enough to fill an additional pillowcase, and I estimate it could easily create four to five more pillows. The ability to modify the pillow’s firmness at any time is an outstanding feature that makes it adaptable for a wide range of preferences and sleep styles. This pillow has exceeded my expectations in both comfort and versatility. I highly recommend it to anyone seeking a personalized sleep experience.
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Reviewed in the United States on February 1, 2026

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