HDX ADSB weather DBz scale

Flying_Monkey

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Sep 5, 2019
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I looked in the manual but couldn't find the answer. Does anyone have the DBz scale for weather depiction via ADSB on the HDX?

Thanks!

Eric
 

Flying_Monkey

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Red is bad. Yellow is not great. Green is a bug wash.
It seems like the scale on the HDX is very different than other ADSB sources like my Avidyne IFD540 and Foreflight (which does publish a scale). The HDX seems to indicate yellow and red while the others show just green and yellow. I just want to know the scale so I can make decisions based on actual real data. Hey Dynon, what's the scale?
 

RV8JD

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Not in dBZ, but some info from page 5-77 of the SkyView HDX Pilot’s User Guide – Revision F. (I got a chuckle from the use of "Heavier" and "More Extreme" ... looks like they ran out of superlatives!)

i-mcxMbzv-M.jpg


ForeFlight's WX legends (you need to take along a cheat sheet to interpret the colors/shading):

http://cloudfront.foreflight.com/docs/ff/13.2/v13.2 - foreflight weather legends optimized.pdf
 
Last edited:

swatson999

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How is that helpful? It's a different scale entirely, with different colors and much finer gradations.
 

Rhino

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It's the scale for NEXRAD, which if I'm not mistaken is what's distributed via ADS-B, which is in turn is what was asked for. Feel free to offer corrections if I'm mistaken. It would be more helpful than simple criticism. I've never claimed to be all-knowing and all-seeing.
 

swatson999

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It's the scale for NEXRAD, which if I'm not mistaken is what's distributed via ADS-B, which is in turn is what was asked for. Feel free to offer corrections if I'm mistaken. It would be more helpful than simple criticism. I've never claimed to be all-knowing and all-seeing.

No, the OP asked for "Does anyone have the DBz scale for weather depiction via ADSB on the HDX?". Clearly, the scale and color chart that Dynon uses for its depiction bears little, if any, relation to the Nexrad data that is provided on other platforms.


Dynon's:
i-mcxMbzv-M.jpg

Nexrad:
8BA9D227-5D26-4E49-A4AA-C10D5B16228A (2).jpeg


No Data is different, black doesn't appear at all on Nexrad, brown and blue don't appear at all on Dynon, the sequence of light and dark green is reversed one to the other, there's no white on Dynon, and whereas Nexrad has 23 levels, Dynon has 8.
 

Rhino

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So the HDX doesn't simply display the radar images, but rather natively renders the images from scratch from raw data. That's good to know. Thanks.
 
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