Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, via a first cell, an indication to activate a second cell. The UE may receive, via the second cell, a synchronization signal block (SSB) associated with a first type of time synchronization of the UE on the second cell, the SSB including a primary synchronization signal and the SSB omitting a physical broadcast channel (PBCH), demodulation reference signals (DMRSs), and/or a master information block. The UE may receive, via the second cell and based at least in part on the first type of time synchronization, a reference signal associated with one or more of: a second type of time synchronization on the second cell, a frequency synchronization on the second cell, or an automatic gain control (AGC) synchronization on the second cell. Numerous other aspects are described.