https://vcrux.com/kg5jmv/beam.png

(1) Antenna
 
Specifications:
 

Connector type: SMA-Female
Frequency band: Dual band VHF / UHF
Frequency: 144MHz / 430MHz
Maximum power: 15W
V.S.W.R: less than 1.5
Impedance: 50ohm
Antenna length: about 13cm (retracted) / 48cm (full length)

https://vcrux.com/kg5jmv/plate-ordering.png

https://vcrux.com/kg5jmv/plate-contact.png