Today, the bandplan for IARU R1 restricts digimodes to a bandwidth < 500 Hz. This limitation is not justified, as spectrum occupancy is the same whether you transmit a certain message slowly (using small bandwidth) in - say - 10 min or pretty fast (using larger bandwidth) in just 2 min. USKA - the Swiss amateur radio union - has proposed to change the IARU R1 bandplan in order to allow wideband (<2700 Hz) digimodes for 30 m.