A:Answer Hello,
Thank you for contacting Samson Technologies. The range on this unit is around 100 ft while maintaining line of sight. For the clearest results, the transmitter needs to be within line of sight with the receiver, so you being highly elevated away from the receiver could possible cause drop-outs to occur. If you have any other questions or inquiries, please let me know at any time.
Best Regards,
James (Product Specialist)