Guardian Media Group, which owns the station, has written to the regulator to propose the switch from its current output, which largely consists of jazz, soul, blues and R'n'B.
GMG promised it would retain the 45 hours of specialist jazz programmes it currently broadcasts out of daytime within the planned new format.
The station was launched in 1990 as Jazz FM and was permitted a format change in 2003, reducing the daytime requirement for jazz but with more off-peak specialist jazz programming.
GMG relaunched the station as 102.2 Smooth FM in 2005.
The group's interest in reaching the over-50s is likely to make it a potential front-runner to pick up the Saga stations, which are reported to be for sale.
The closing date for responses to the consultation is 18 November.
GMG promised it would retain the 45 hours of specialist jazz programmes it currently broadcasts out of daytime within the planned new format.
The station was launched in 1990 as Jazz FM and was permitted a format change in 2003, reducing the daytime requirement for jazz but with more off-peak specialist jazz programming.
GMG relaunched the station as 102.2 Smooth FM in 2005.
The group's interest in reaching the over-50s is likely to make it a potential front-runner to pick up the Saga stations, which are reported to be for sale.
The closing date for responses to the consultation is 18 November.
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