Blackmagic compatible? tested with both atem mini and atem pro and in both cases get a green-tinted image. no go.

Please Do not connect Mars 4K to the first hdmi port of the Blackmagic Design switcher, please connect to other HDMI ports. This is because the first hdmi port of the Blackmagic Design switcher supports the RGB format, and the output format of the wireless video transmission system is the YUV format.

Does it have timecode passthrough or relocking?

I believe it passes through but I have not confirmed this.

Do i need this for wireless transmission if i purchase the mars m1 bundle?

Yes you need 1 transmission for your camera , m1 monitor can act as transmission or receiver.

Can I have two TX paired to a RX, but use only one TX at a time? Not both at the same time.

This should work fine. These units do not pair in the manner of Bluetooth. You simply need to set all units to the same channel, like wireless microphones, and you're done. And as you said, use only one TX at a time and you should be golden.

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Hollyland Mars 4K Wireless Transmitter Receiver 5G SDI HDMI Video Transmission System, 4Kp30/1080p60, Support 23.98/29.97/59.94 FPS SDI Out, 450FT Los Range 66ms Latency, 4 App Monitoring (1TX+1RX)

Product ID: 468507204

Details

Brand
HollyView
Compatible devices
Receiver Video
Connectivity technology
HDMI
Controller type
joystick
Special features
4K UHD Video

⚡66ms ultra-low latency

🎥4K UHD @ 30fps

📡450ft LOS range

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VT159605

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Sold byAmazon VanuatuDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚀 Elevate your shoot with Hollyland Mars 4K — where pro wireless meets zero compromise!

DUAL HDMI SDI INPUTS - Versatile connectivity supports professional broadcast standards and flexible workflows.
MULTI USER APP MONITORING - Up to 4 devices can simultaneously monitor the feed—perfect for collaborative shoots.
SEAMLESS 4 K UHD STREAMING - Experience crystal-clear 4Kp30 video transmission for next-level production quality.
LIGHTNING FAST 66 MS LATENCY - Ultra-low delay ensures real-time monitoring and flawless live direction.
EXTENDED 450 FT WIRELESS RANGE - Stay untethered with a robust 150m line-of-sight range—freedom to move on set.

The Hollyland Mars 4K is a professional-grade wireless video transmission system delivering 4K UHD at 30fps with a 450ft line-of-sight range and ultra-low 66ms latency. Featuring dual HDMI and SDI interfaces, it supports multiple frame rates and up to two receivers plus four simultaneous app monitors, making it ideal for dynamic, multi-role production environments.

Specifications

ASIN	B0B9YCT42Z
Audio Output Mode	Stereo
Audio Output Type	hdmi
Best Sellers Rank	#23,352 in Electronics ( See Top 100 in Electronics ) #28 in Camcorder Remote Controls
Brand	HollyView
Built-In Media	1
Color	Black
Compatible Devices	Receiver, Video Equipment
Connectivity Technology	HDMI
Connector Type	HDMI, 3G-SDI
Control Method	Touch
Controller Type	joystick
Country of Origin	China
Customer Reviews	4.6 4.6 out of 5 stars (303)
Format	4K
Global Trade Identification Number	06970758743921
Item Dimensions D x W x H	11.5D x 6.5W x 3.2H centimeters
Item Weight	1.1 Kilograms
Manufacturer	Hollyland
Mfr Part Number	1T1
Model Number	Mars 4K
Number of Channels	8
Other Special Features of the Product	4K UHD Video Transmission
Output Power	5 Watts
Output Wattage	5 Watts
Smart Home Compatibility	Not Smart Home Compatible
Supported Internet Services	Netflix
Surround Sound Channel Configuration	7.1
Total Number of HDMI Ports	2
Unit Count	1.0 Count
Video Encoding	HEVC
Warranty Description	manufacture
Wattage	40 watts
Wireless Technology	wireless

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