Model : TL-WR843ND

Hardware Version : V1

Firmware Version : 3.14.9 Build 140410 Rel.33110n

ISP :

Hello,

there is a problem of Wi-Fi can not be found
If I set my TL-WR843ND Wireless with these parameters:

working mode : Standard Wireless Router

Mixed mode 11bg
Channel 6

the problem is most apparent only when Channel 6 - WiFi SSID can not be found
at Channel 7 WiFi SSID it is available about 10 minutes, then it is like WiFi off.

/ Please excuse my English, it is translated via Google Translator /

Today I test new one of the same model , and the problem is the same !
can you help me ?

thanks for reply
Marian