what is the range of communication for this model and is there any documented record available plz share.

It's impossible to give a short answer to this as there are too many variables to consider, however we have written a guide to PMR446 radios and what their expected ranges are as they're all set at a fixed output power due to the regulated specifications of the format. Click the link below to read the article which should help answer your question.

https://www.pmctelecom.co.uk/blog/pmr446-radio-frequency-information/