North Korea Reportedly Conducted Recent ICBM Related Telemetry Testing
My guess would be is that North Korea is sending out the telemetry data not as a test of anything but rather as a warning to the Trump administration to hurry up and drop sanctions or testing will begin again:

North Korea has continued its development of intercontinental ballistic missiles despite declaring a halt to launches, having conducted a missile-linked radio wave experiment early this month, it has been learned.
Yomiuri Shimbun
Despite sanctions limiting the North’s petroleum supply, the North Korean military is continuing to train at its usual levels. In response, the Japanese and U.S. governments plan to increase their surveillance of smuggling and other activities on the high seas, according to military and diplomatic sources.
North Korea conducted a launch test of its radio telemetry, which is transmitted from equipment in a missile’s components such as a warhead. When a ballistic missile is launched, telemetry provides essential information about the missile’s angle, location, speed and other factors to observers on the ground.
In 2016 and 2017, North Korea launched about 40 missiles, including ICBMs. Ground-based telemetry tests are often conducted prior to an ICBM launch, and are considered an important sign of an impending missile launch.
You can read more at the link.


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