SKU: 4760406689

Hollyland Spares - Mushroom Antenna (for Mars and Cosmos Series)

$135.06 $150.07
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Description

Hollyland Spares - Mushroom Antenna (for Mars and Cosmos Series)The Hollyland Mushroom Antenna (Model: HL ATN03) is an official OEM high performance replacement antenna custom engineered for Hollylands flagship Mars and Cosmo series wireless video transmission systems. Known on set for its distinctive domed "mushroom" capsule shape, this antenna utilizes advanced circular polarization. It is the go to solution for camera teams operating dynamic handheld setups, Steadicams, or complex motorized gimbals where

The Hollyland Mushroom Antenna (Model: HL-ATN03) is an official OEM high-performance replacement antenna custom-engineered for Hollyland’s flagship Mars and Cosmo series wireless video transmission systems.

Known on set for its distinctive domed "mushroom" capsule shape, this antenna utilizes advanced circular polarization. It is the go-to solution for camera teams operating dynamic handheld setups, Steadicams, or complex motorized gimbals where standard straight-line antennas frequently drop frames or lose connectivity due to extreme camera tilting and rapid multi-angle movements.

 

Core RF & Operational Features

  • Circularly Polarized Wave Architecture: Unlike standard flat "paddle" or thin whip antennas that use linear polarization, the Mushroom antenna broadcasts an omnidirectional, spiraling RF wave. This mitigates "cross-polarization attenuation"—the abrupt signal drop that occurs when a camera twists or banks out of direct vertical alignment with the video village receiver.

  • Broadband 5 GHz Optimization: Built to operate cleanly within the 5.0 GHz to 5.9 GHz frequency range. It provides a reliable 2.5dBi gain, ensuring low-latency 4K and HD video feeds slice right through heavy on-set Wi-Fi interference.

  • Impact-Resistant Domed Cap: The delicate internal antenna elements are entirely enclosed inside a thick, ruggedized injection-molded capsule shell. This reinforced design easily withstands accidental bumps, equipment drops, or being jostled during tight camera handoffs.

  • Flexible Extension Stem & RP-SMA Lock: Features a robust, flexible lower neck that absorbs mechanical strain, preventing damage to the unit’s connector. It attaches via a gold-plated Reverse Polarity SMA (RP-SMA) internal female thread to ensure a lossless, secure physical mount.

System Interoperability

This performance-tuned broadcast spare features universal standard threading calibrated for Hollyland's 5 GHz video lines:

  • Mars Wireless Series: Direct match for the Mars 4K, Mars 400S Pro, Mars 400S Pro II, and Mars 300 Pro wireless transmission systems.

  • Cosmo Ecosystem: Seamlessly interfaces with Cosmo C1 wireless SDI/HDMI transmission packages.

Technical Specifications Matrix

Feature Specification
Official Model SKU HL-ATN03 (Part Family: Circularly Polarized Video Spares)
Antenna Profile Geometry Mushroom / Shielded Omnidirectional Capsule Form
Tuned Working Frequency 5.0 GHz to 5.9 GHz Bandwidth Optimization
Coaxial Connector Type Threaded RP-SMA Female Interface
Signal Gain Base 2.5 dBi Gain Output
Outer Chassis Shell High-Impact Polycarbonate Matte Black

On-Set RF Configuration Tip: To maximize transmission range and prevent latency glitches, always match your antenna polarization types on both ends of your wireless line. For optimal results, mount a pair of these dome-styled Mushroom antennas onto your on-camera transmitter, and pair them with matching circularly polarized antennas at video village. Mixing a circular capsule antenna on the camera with standard flat linear paddle antennas on your monitor can cut your system's effective transmission distance by up to 50 percent.

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]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 4760406689

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PenLady
Birmingham, US
★★★★★ 5
Excellent adjustable drafting chair
Size: 934-Z, Color: Blue
Excellent chair design, extremely comfortable and exceptionally easy instructions to follow making for simple assembly. Love the amply wide cushioned seat and ergonomic backrest. The height adjustment feature works perfectly as well as positioning of the foot ring . Having the ability to raise the arms is also a big plus! I highly recommend this product for attractive appearance, comfort features, functionality and operation. Really nice chair!
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Reviewed in the United States on April 13, 2026
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Sandra
Louisville, US
★★★★★ 4
Comfortable, stylish, and perfect for long work hours 💗✨
Size: 934-Z, Color: Pink
I bought this chair because I spend a lot of time working and needed something comfortable but also stylish, and I absolutely love it. Since I started using it, I feel much better support in my back thanks to the lumbar support. It makes a big difference, especially during long work hours. The adjustable footrest is also a feature I didn’t know I needed, but now I use it all the time. The flip-up armrests are very convenient because I can adjust them depending on what I’m doing or move them out of the way when needed. The pink color is beautiful and adds a soft, elegant touch to my workspace. It looks great in a modern home office. It feels sturdy, well-made, and very stable. Overall, it’s a great purchase that improved both my comfort and the look of my workspace.
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Reviewed in the United States on April 29, 2026
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Amazon Customer
Chelsea, US
★★★★★ 5
All-around thumbs up!
Size: 934W-Z, Color: Black
So far, so awesome. Easy to assemble, comfortable, arrived quickly and is exactly what I was looking for. I have a tall work bench in my new studio so I needed a chair that we could allow me to sit higher than a regular office chair and allow me to get off my feet after standing on the concrete floor. Plus its a nice looking chair that I am sure will last a long time. I love the flip-up arms and the lumbar support. This is just right!
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Reviewed in the United States on May 8, 2026
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Danielle Chen
New York, US
★★★★★ 5
Perfect Balance of Comfort, Support, and Style!
Size: 934-Z, Color: Black, Size: 934-Z, Color: Black
I’ve been using this chair for a few weeks now, and I’m genuinely impressed with how much of a difference it’s made in my workspace. The mesh back is one of my favorite features—it offers excellent breathability and prevents that sticky, overheated feeling you sometimes get with solid-back chairs, even after sitting for hours. The seat cushion is firm enough to give proper support but still has enough give to keep me comfortable through long workdays. It feels like the perfect middle ground between soft and supportive. The adjustable foot ring has been a complete game changer for me. I use a taller desk setup, and having somewhere to rest my feet makes a huge difference in posture and overall comfort. Whether I’m sitting upright for focused work or leaning back to read, it’s always at the right height. The flip-up armrests are another smart design choice. When I’m typing, I like to have them down for support, but when I’m done, I can flip them up and push the chair neatly under my desk—saving space and keeping things tidy. The casters roll smoothly on both hardwood and rugs, so I can move around easily without scraping the floor or getting stuck. The overall build quality feels solid and sturdy, with no wobbles or creaks. Assembly was surprisingly quick—everything was clearly labeled, the parts felt durable, and it only took me about 20 minutes from opening the box to sitting in the chair. The sleek, modern look is another big plus—it blends in perfectly with my home office décor without feeling bulky or taking up too much visual space. If you’re looking for a chair that combines comfort, ergonomic support, durability, and style, I can’t recommend this one enough. It’s equally great for work, studying, or just relaxing at your desk, and it’s definitely been worth every penny.
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Reviewed in the United States on August 12, 2025
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sleepywan
Draper, US
★★★★★ 3
OK for the price, but overall comfort is avergae
Size: 934-Z, Color: Mustard
Easy to put together, color (mustard) accurate to images, and while I understand this is not a high-end chair, I feel like it still needs to be rated for its quality. Pros: the seat cushions are fairly comfortable and it rolls well. Adjustable footrest is easy enough and mostly sturdy. Cons: For a tall office chair, it doesn't go up high enough. I actually had to lower my standing desk to sit at it, which then isn't where I want it when I'm standing now. It's also a bit wobbly. The seat area's attachment to the post isn't as solid as it should be for a tall chair, so while sitting, it does tend to lean/slope forward and wobble side to side. The lumbar support is not adjustable, so I'm not even really sure what it does. And the armrests are not very comfortable to use. Since they are hard plastic, they are just a bit too rigid to rely on for any comfort. They are basically there to hold on to when you're getting out of the chair.
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Reviewed in the United States on May 29, 2026

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