Grammar exercise on comma spices and run on sentences

1. Some radio stations have powerful signals, they can be heard in nearby cities.
Some radio stations have powerful signals; they can be heard in nearby cities.

2. One disc jockey reads letters, he also jokes with callers
One disc jockey reads letters; he also jokes with callers.

3. Several stations hold contests, prizes are often albums.
Several stations hold contests; prizes are often albums.

4. Tanya won one contest, she named a song correctly.
Tanya won one contest; she named a song correctly.

5. The sound system is complex, few people could operate it.
The sound system is complex; few people could operate it.

6. The Reds won the pennant they will play in the World Series.
The Reds won the pennant; they will play in the World Series.

7. Last summer we camped, it was the best vacation ever.
Last summer we camped; it was the best vaction ever.

8. Tony has a set of barbells, he lifts weights every day.
Tony has a set of barbells; he lifts weights every day.

9. We saw an old Hitchcock film, it was a classic thriller.
We saw an old Hitchcock film; it was a classic thriller.

10. A raccoon visits our back porch every evening, we call him the Lone Ranger.
A raccoon visits our back porch every evening; we call him the Lone Ranger.