wireless connection

please am new to mikrotik wireless. am installaing a PTP using 23dbi flat planel antenna on both ends with 350mw wireless card at a distance of 6km. what will be my expected signal to work very well or will it transmit?

What about trying some Web signal calculator?

it depends on your line of site…at times if u have considered your fresnel zone. I can’t really determine your best signal but anything from -56 is better with a good TX/RX Client Connection Quality (CCQ). Just try and get the best.