Sending multiple NBFM signals at once

Hi,I was going through Jonathan’s hack to receive multiple NBFM at
once.I am really impressed.I would like to know whether i haveto use
gr.analysisfilterbank and then attach a FMmodulation block for multiple
Tx transmission too.I am trying to send multiple mp3 playlist over the
fm spectrum using a basic TX board.Regards, Mayur Sarode Dear
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