If the Icom restarts when you increase the power the power supply might not be providing enough current, or there could be a connection problem with the power cables. 

Radios can also restart due to high SWR. It is a protection circuit. If that was the issue though I would think it would happen at lower power levels too, though.

73, John Brier KG4AKV

On Sun, May 23, 2021, 13:54 belwafi kais <kaisbelwafi@gmail.com> wrote:

Hello,

Please what is the minimum power that i should use to send data for cubesat. 20w is it sufficient?

When i increase the power in the icom 9100, the icom restart once i exceed approximately 35w.  What is the problem. 

Thank you.

Best regards

Kais

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