I use these to help dissipate the excess heat. Slap them on back and let them do their job.?
Also use on Xeigu 6200.

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At idle the backplate is getting somewhat hot. So my guess is that the linear regulator 7805 is getting hot. The radio draws about 450mA of the 9VDC supply so the 7805 will be dissipating some heat.?

I?m planning to elevate the radio at the back end to have a better user angle. By that the heat can disappear easier then laying flush to the table.?

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Tilman D. Thulesius