The maximum POE run you can complete is approximately 328ft (100m) - this is the limit that data can be transmitted across the ethernet cable before it becomes unstable. [FONT=Trebuchet MS, Lucida Sans Unicode, Lucida Grande, Lucida Sans, Arial, sans-serif]
The maximum distance you can power a device will vary depending on the access point and its voltage required, as well as the voltage provided by the power supply, and the quality of the cable. Cat6 (shielded!) cable is recommended for long POE runs. [/FONT]
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Too far out, the power will be there, but as you are seeing, the data signal is pushing through too much copper or is getting overwhelmed by a (new?) source of interference.[/FONT]
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From your (dalepa), you state that the power is there, but not the data. The repeater linked may work. I see conflicting answers in the Q&A section of on the Amazon page - some say it repeats data, while other say its just power.
[/FONT]Its Amazon - they will take returns, so your liability is pretty low. Buy it, try it, return it if it doesnt work. Everything else looks to be more expensive.
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here is a crazy (complicated) idea:
[/FONT]Go Wireless
Camera/ PoE injector --> data to Wireless bridge. Bridge the wireless back into an AP closer to home base. You can crank up the security / MAC filtering on the bridge and router. The new WiFi devices are super fast (look for the ones that are gigabit / they typically have 3 - 6 (and more!)
antennas . This way, the camera is locally powered by a local-ish PoE injector. The gigbit router / bridge will shoot the data back into home base. This of course comes with more complications and more equipment to set up and maintain..... but we all need hobbies
