Significant: If you're intending to use the SMA connector to the antenna, make sure a 0 Ohm resistor is populated. A number of end users have reported that it is not present on their own modules. Check with the crimson sq. close to the SMA connector from the diagrams under https://situsjudimbl7722109.theblogfairy.com/30391675/link-alternatif-mbl77-for-dummies