Chapter 2 __________________________________________________________ Product Overview  
VAISALA________________________________________________________________________ 7 
CHAPTER 2 
PRODUCT OVERVIEW 
This chapter introduces the features, advantages, and the product 
nomenclature. 
Introduction to Portable Antenna Set CG31 
Portable Antenna Set CG31 is a mobile antenna configuration 
designed to be used with GPS wind finding systems in field 
conditions. The antenna set consists of a Helix UHF antenna, a GPS 
antenna, and the Antenna Amplifier and Switch RAA111 on a tripod 
mount. The coloring of the parts is adjusted for field operation 
conditions. One person can transport and assemble the antenna set. 
Portable Antenna Set CG31 receives radiosonde signals in 400 MHz 
meteorological range. The antenna set can be used in conjunction with 
the Vaisala DigiCORA® sounding system. 
The tripod and the antennas fold compactly for transportation. The 
transport case is made of polypropene and equipped with wheels for 
the ease of transportation. The transport case also holds a tools bag, 
which contains foot pads, pegs, and a hammer.