Yes, the Himawari-8 data is part of the data that's relayed from GOES-16. This is also why I'm able to capture some GOES-15 data too (which my antenna wasn't pointed at). If you look at the "Readme" in the text directory, you can see the types of data being broadcast (the NWS/NHC stuff is pretty interesting, too)

As for my antenna, I'm using this 1.9ghz parabolic grid antenna.

u/magnav0x · 1 point r/RTLSDR

I just got a ZDA 1.7/2.1 antenna and it worked out fine. It doesn't have a secondary reflector, but I was able to get vit averages down to ~450, with it sitting on patio furniture. Hopefully I can get it lower with a proper mount next weekend. I may also attempt a DIY secondary reflector.

https://www.amazon.com/1710-2170-Grid-Parabolic-Dish-Antenna/dp/B07DQS39RZ

I had it out receiving for about 7 hours and didn't have too many dropped packets, but my elevation is 45 degrees and pretty forgiving I imagine.

Note that I had this particular seller cancel my order 2 times. I just kept placing the order until they finally gave in and shipped it to me.

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