Add RX Antenna for FT-991 to Improve Your Reception

The FT-991 is a nice small size and lightweight radio, it is perfect for portable operations.
It can be carried along with a laptop computer as hand luggage in airplane. The weak point of this radio, is it does not have a separate RX antenna capability. Therefore i decided to add this feature.
On the back side of the radio a BNC connector is added to connect the RX antenna and a switch is fitted to select between RX antenna or main antenna.