User talk:185.139.137.40

December 2021
Hello. This is a message to let you know that one or more of your recent contributions, such as the edit you made to 5G NR frequency bands, did not appear to be constructive and have been reverted. Please take some time to familiarise yourself with our policies and guidelines. You can find information about these at our welcome page which also provides further information about contributing constructively to this encyclopedia. If you only meant to make test edits, please use the sandbox for that. If you think I made a mistake, or if you have any questions, you may leave a message on my talk page. Thank you. Serols (talk) 16:35, 22 December 2021 (UTC)

Please refrain from making unconstructive edits to Wikipedia, as you did with this edit to UHF television broadcasting. Your edits appear to be vandalism and have been reverted or removed. If you would like to experiment, please use the sandbox. Repeated vandalism can result in the loss of editing privileges. Thank you. Serols (talk) 16:36, 22 December 2021 (UTC)