|Broadcast area||Adelaide, South Australia|
|Slogan||Adelaide's Hit Radio Station|
|Frequency||107.1 MHz FM (1989–present)|
|First air date||12 September 1980|
|Format||Top 40 (CHR)|
|Former frequencies||107.5 MHz FM (1980–1989)|
|Affiliations||Today's Hit Network|
|Owner||Southern Cross Austereo|
Hit 107 (call sign: 5SSA) is a commercial FM radio station in Adelaide, South Australia primarily targeted at those in the 16–35 age group on a frequency of 107.1 MHz, and part of Southern Cross Austereo's Today's Hit Network. On Monday 13 October 2014, it was announced that SAFM would cease broadcasting, and would relaunch on Monday 20 October 2014 as Hit 107 due to flagging ratings.
The station commenced broadcasting in 1980, on the frequency of 107.5 MHz, with a call sign of 5SSA and an original on-air ID of "Triple SA-FM" which was very short lived but soon replaced by "Double SA-FM". It was the first commercial radio station to broadcast on the FM band in Adelaide. Initially SA-FM was somewhat of a fringe operation, hampered largely by the fact that many houses, and more importantly most contemporary cars, did not have the ability to receive FM radio broadcasts.
Later, it changed its name to "SAFM", and altered its frequency slightly to 107.1 MHz. A second frequency, 91.1 MHz, was added as what was the first of many repeater frequencies in Adelaide, required due to Adelaide's sometimes problematic television and radio reception idiosyncrasies.
Prior to the commercial introduction of the Compact Disc audio format to the Australian market, SAFM obtained one of the first Sony CD consumer players, which was used on-air for demonstrating this new format to the public.
Throughout the late 1980s, most of the 1990s and the early 2000s, it was the highest rating station in Adelaide; in 2005, however, it dropped back to third position, behind talk station FIVEaa and music station Mix 102.3.
In November 2003 SAFM changed from CHR/Pop Hits to an adult contemporary format, but both SAFM and Triple M Adelaide changed back their original formats in December 2005.
On Monday 13 October 2014, it was announced that SAFM would cease broadcasting, and would relaunch as Hit 107 on Monday 20 October 2014 due to flagging ratings. Amos Gill and Daniela Pola were also announced as the new breakfast team. On Monday 20 October 2014, Hit 107 was planning to sign on at 8:00 AM Adelaide Time. The final song on SAFM was NSYNC's, Bye Bye Bye. The first song on Hit 107 was Cosby Sweater by Hilltop Hoods and the first American song was Blame by Calvin Harris feat. John Newman.
Hit 107 is simulcast on Digital Radio in Adelaide.