What maximum range can I expect with my Deeper Sonar, when it’s extended with the Range Extender?

Below results can be achieved in good weather conditions with Deeper Range Extender, Deeper Sonar mount for bait boats. Smartphone and the Range Extender were attached to a tripod.  

• CHIRP+ 2 stable connection up to 220m (722 ft)   
• PRO+/CHIRP+/PRO+2 stable connection up to 200m (656 ft)