Yes, the SS California should have been able to help the Titanic when it began to sink due to it having a run in with an iceberg. There is no real reason why the SS California would not have been able to help, all reasons given so far are excuses.
The SS California should have helped the Titanic. It was close enough, and evidence suggests it could see the ship going down. The ship had to have seen the distressed flares. Two separate inquiries have stated the ship could have saved many of the lives that were lost, and a U.S. Senator called the actions of the ship captain reprehensible.
Yes, SS California should have been able to help the Titanic. If they had a ship or a boat, then they definitely and undoubtedly should have helped the Titanic. The Titanic supposedly hit an iceberg and sank. However, the SS California may have been able to help them if they had a ship.
In retrospect it's easy to say that a radio operator should always be on duty in case another ship needs help. It wasn't the fault of the radio operator on the California that had already gone to sleep when the Titanic's cries for help came in. It was the time we lived in, and nobody expected that the ship could go down.