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compatibility test to make sure
that our

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electronic systems are there's
no

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interference between the science
systems

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and our control systems CS bf
uses two

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types of telemetry

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the first one is line-of-sight
telemetry

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which is sending the data
through a

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line-of-sight link which means
the

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ground station can actually see
the

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payload through an RF link and
the

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second means of getting data
from the

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payload is through over the
horizon

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links which means that the
payload

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doesn't have a direct line of
sight back