ESSB TX Bandwidth with FDM-DUO

Pez T

Hello all, 

I do a bit of ESSB experimentation here in VK, and I am wondering if there is a way to increase the FDM-DUO TX bandwidth beyond 4kHz wide? Most (if not all) other popular SDR transceivers allow wider bandwidths to be used, with 6kHz being a very popular TX operating bandwidth (which is permitted here in VK on some bands)...

Thanks in advance! 73

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