Nagoya RE-05 10-1300MHz Antennenhalterung Masseabsenkung 

• Makes NMO/PL259 Mobile Antenna into Omni Base Station
• 20.5-Inch ground plate stainless steel radials
• 200W power rating
• 100 mph wind load
• Two Elements on radials
• Easy to install on any 2-Inch pole or pipe

Note: There are 3 kinds of connectors
1. SO239-SO239
2. SO239-PL259
3. SO239-NMO