SteadiHub
2007Video Assist and Video Accessories forum

Wireless video transmitters for on-set monitoring and their practical performance

19 years old. Gear and prices may have changed since.

What the thread found

  • FM-based analog wireless video transmitters suffer from multipath interference and signal degradation indoors due to wall reflections, especially at higher transmission power levels.
  • COFDM digital modulation provides more reliable indoor reception than FM because it uses a narrow, constant frequency band that allows diversity receivers to select the strongest signal more easily.
  • Diversity receivers outperform single-antenna systems for wireless video transmission regardless of modulation type.
  • Higher transmitter power does not improve indoor reception and can worsen multipath problems by amplifying reflected signals.
  • WiFi-based video transmission introduces approximately 0.5 second latency, making it unsuitable for real-time monitoring needs.
  • Units with FM modulation and single-antenna reception are prone to image distortion and dropouts during production, particularly in indoor environments.
  • Some wireless transmitter units experience temperature-related performance degradation during extended use on set.
  • Ordering directly from certain manufacturers may result in restrictive return policies and lack of demo unit availability.

Depends on

  • The discussion focuses on older technology from 2007 and may not reflect current wireless video products.
  • One person's experience with heat-related failures may not be representative of all units.
  • Performance varies significantly based on shooting location, indoor versus outdoor conditions, and specific setup parameters.
  • Claims about specific modulation types are based on practical experience but lack formal documentation or specifications from manufacturers.
  • Budget constraints may limit which systems are practical for individual operators.

Gear in this thread

Moduluscatalog

Same gear or parts

  1. 2022Power connector pinout for Master Greenscreen CRT monitor with 6-pin Hirose connectorMonitors
  2. 2017Wireless teleprompter setups for steadicam operationGeneral Discussion
  3. 2016Performance and reliability characteristics of Tiltamax wireless video transmitters compared to competing brandsDisputedVideo Assist and Video Accessories
  4. 2014DC voltage converter box with adjustable output range and protection featuresDisputedGeneral Discussion
Read the original threadAsk about this threadThe answer cites the archive