[aprssig] K6RPT-12 Balloon Small circle on APRS.fi

Steve Noskowicz noskosteve at yahoo.com
Sun Dec 2 21:20:44 EST 2012

What's the smaller circle on APRS.fi?
The larger one agrees with my radio horizon calculations.

73, Steve, K9DCI USN (Vet) MOT (Ret) Ham (Yet)

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