No, HD1 don't support cross-band repeater function. It only support cross-band receive and transmit.
What's the cross-band receive and transmit?
You can set it on the HD1 CPS. Set a channel, the transmit frequency is UHF/VHF, receiving frequency is VHF/UHF. You can refer to this video. https://www.youtube.com/watch?v=mWRo3p0-mwE&t=2s
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