The PKT-23K two-way radio is an optimal solution for indoor operations (up to 150k square feet) and outdoor productions without a lot of hills, trees, or other structures. If you're looking for a radio that can handle a longer range or more obstructions, check out the TK-3400U16P durable two-way radios. For the longest range (10 to 20 acres) and the capability to handle a lot of obstructions or high noise situations, you'll want the extremely tough NX-340U16P!