Diamond SRH779 433MHz Articulating Antenna (SMA)
by Diamond

Genuine Diamond SRH-779 Antenna

Known to be one of the best antennas for use on UHF transmitters, these antennas offer great performance and excellent build quality.  Articulating antenna to allow you to easily mount in an optimal position.

Specs:

• SRH779: 144/430MHz(2m/70cm)
• Length:44cm(full length),16cm(retracted)8 stages
• Weight:38g
• Gain:2.15dBi(430MHz)
• Max.power rating:10W FM
• Impedance:50ohms
• Connector:SMA-P
• Type:1/4wave(144MHz),1/2wave (430MHz),FM/120/150/300/450/800MHz for receiving only.
• Omnidirectionally foldable structure.
• Guide on antenna listing optimal extension lengths for each frequency. 

Be careful, there are a lot of fakes out there.  These are purchased directly from the official Diamond US distributor.