I present to your attention the connector for the cable 5D-FB. The connectors are purchased on a popular Chinese site. Since 2013. I have a 5D-FB cable. When the cable was purchased, a large search was made for the connectors. Such connectors for the 5D-FB were not on sale at all! A conventional PL-259 was used for the RG-58 cable, it was drilled in two diameters (under the central core and under the outer diameter). The photo shows the PL-259 and the 5D-FB cable. The connector remains up to now, but I would like to find a native connector. And in 2017 the connectors for 5D-FB appeared on sale. They cost 2.5 $. The 5D-FB cable is popular, for HF bands the most suitable and not expensive option. Cheaper than just REXANT (analog RG-58, but the characteristics are worse).
Update: 20180510 author: