Walton gives broadcasters control of de-icing at IBC
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Walton gives broadcasters control of de-icing at IBC

September 12, 2017

 

Walton De-Ice unveils its all-new Walton ADC-4000 Antenna De-Icing Control System  at IBC 2017.  The Walton ADC-4000 makes the operation of Walton hot-air de-icing systems more accurate and efficient than ever, offering potential savings in management and labor overhead for satellite broadcast and head end facilities.
 
“Walton’s unique Hot-Air De-Ice design for antennas from 3.7 to 32 meters provides the most economical and reliable system on the market, with CE-approved forced-air heater options and electric, liquid gas or propane fuel flexibility,” says Bill Walton, President of W.B. Walton Enterprises, Inc.  "With Walton De-Ice’s improved temperature control & monitoring solution, automatic activation can lower De-Icing operational costs for our broadcast and satellite customers.” 
 
The ADC-4000 Antenna De-Icing Control System adds a new method to actively control the heat within an antenna de-icing enclosure thus allowing for improved control of the antenna surface temperature.   “Our new ADC-4000 features now give users control of the actual temperature on their dish,” adds Walton.

The most up-to-date and cost-effective Antenna De-Ice Control System in the Industry, key features include:

 

- Automatic De-Icing - lower your operational costs / overhead

- Rain & Snow Detection

- Manage heaters, blowers, rain diverters to ensure ice-free operation without on-site personal assistance

- Temperature monitoring on/at antenna

- System includes DP-10 (1RU Indoor Unit), DS-18 module enclosed in outdoor Power Distribution Panel (PDP), temperature and moisture probes.

 

NEW with ADC-4000 New way to actively control heat within antenna de-icing enclosure:

 

- Improved control of antenna surface temperature

- Digital Display – Set Triggers, Temperature Span, Monitor Operating Temperature in sections of Antenna

- DP-10 are EMF/RFI rated - to support Defense applications

- Interface with external M&C systems via RS-323, 4-Wire RS-485, IP Ethernet/Fiber

 

LEO and MEO Systems: "Bird Baths" and other De-Icing Challenges

With the many new non-Geosynchronous comsat constellations under development, earth station designers continue to look for more cost effective solutions.  Antenna de-icing and weather protection is an input to link performance and system costs that should not be ignored.   

 

A new variant of Walton Snow Shield antenna cover technology suggests cost advantages compared to a traditional Radome approach for LEO/MEO tracking antennas.

 

Non-GEO earth station antennas reflectors have to track a satellite as it moves “across the sky” over a few hours, or rapidly during a period of minutes.  With a Medium Earth Orbit (MEO) in up to 12,000 km circular orbit, the time that an earth station antenna has line-of-sight could range from 2 to 20+ hours. For Low Earth Orbit (LEOs) orbiting from 500-1500 km,  line-of-sight visibility may be only 10-40 minutes.   Many systems use Ka-Band, which requires high antenna accuracy, and subject to high loses due to rain and water.

Bird Baths, Fishbowls, and Radomes: During rain, as an earth station’s un-protected main parabolic reflector tracking a satellite points skyward towards zenith, water can accumulate in the reflector.  Depending on the rain intensity, shape, movement and position of the antenna reflector, this can create a “fishbowl” effect for several minutes or hours — creating link losses and reflector distortion.    Slush, and snow accumulating in a non-GEO tracking while the reflector is pointing skyward can also create a “bird bath” or “Fishbowl effect.   A traditional Radome antenna cover prevents this effect.     

New developments in Walton De-Ice Snow Shield antenna cover technology suggest cost advantages compared to a traditional Radome approach.   We invite comments from designers and suppliers of LEO/MEO ground systems, and the chance to have a discussion with you about how new Snow Shield solutions can support LEO/MEO ground network objectives.   

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