Cluster / Ad Pod

A Cluster (radio) or Ad Pod (TV) is a sequence of commercials grouped back-to-back in a single break. A typical radio stopset might contain 4–8 spots lasting a combined 2–4 minutes; a TV pod might contain 6–10 spots lasting 2–3 minutes. Position within the pod matters enormously: first-in-pod and last-in-pod positions command premium rates because they sit adjacent to program content rather than buried between other commercials.

Listener behaviour during long pods is measurable and predictable: attention drops sharply after the third or fourth consecutive spot as listeners mentally disengage, switch tabs, or change stations. Most broadcast sellers can quote the 'first-in-pod premium' off the top of their head. Sophisticated advertisers specifically negotiate for first-position placement.