It has been tested in the lab with an output of 1260 Watt. All the details can be found in the document below but if you have any questions please let me know.
Follow the link for details on the item. The item "FM 88 108MHz Broadcast Power Amplifier Pallet Module 1kW" is in sale since Thursday, February 14, 2019. This item is in the category "Mobile Phones & Communication\Radio Communication Equipment\Ham/Amateur Radio\Ham Radio Transmitters". The seller is "lefteriselectronics" and is located in Rushden. This item can be shipped worldwide.