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Maximize initial range on nRF52840 pdk

This is kind of a follow-on to the original question here: devzone.nordicsemi.com/.../

I notice that the nRF52840 PDK dev boards need to be closer at the beginning of the test (probably when they are negotiating settings) than after they start sending the test data back and forth.

If I start with the repeater board far away from the test board, I can walk it closer to the test board until it makes a connection and the LEDs start blinking (indicating data is being transferred). At that point I can start walking the repeater board further away (~100 feet further than when the connection was successful) from the test board and the repeater board LED continues blinking. But if I try to run the test again while the boards are further apart the boards don't do their initial connection and negotiation.

Is there some way to make the negotiation phase have the same range as the data exchange phase?

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