Retekess radio roundup: a range of receivers reviewed rigorously

I wanted to review one radio from Retekess, and they sent me four. Let's take a look at them and evaluate their reception and sound quality. If you want to see what's inside the TR604 radio, Fran Blanche did a teardown of it:    • Just How Terrible Is A NEW Portable R...  

Retekess TR604
United States
https://www.amazon.com/dp/B07QQWBHZV?...
Canada
https://www.amazon.ca/dp/B07QQWBHZV?r...

Retekess V115
United States
https://www.amazon.com/dp/B01ARN28SQ?...
Canada
https://www.amazon.ca/dp/B071NMCVM5?r...

Retekess PR11
United States
https://www.amazon.com/dp/B01EACB5J8?...
Canada
https://www.amazon.ca/dp/B01EACB5J8?r...

Retekess PR12
United States
https://www.amazon.com/dp/B07C9Z3WRN?...
Canada
https://www.amazon.ca/dp/B07C86172R?r...