7 Information GNSS Antennas
7.1.1 Information about the 40dB Multi GNSS Antenna
GPS L1 / GLONASS L1 / GALILEO E1 / BeiDou B1 Frequency Band
The GPS, GLONASS, Galileo and BeiDou satellites are not stationary but circle round the globe in a period
of about 12 hours. They can only be received if no building is in the line-of-sight from the antenna to the satel-
lite, so the antenna unit must be installed in a location with a free view to the sky. The detailed installation
requirements can be found in chapter Installation Multi GNSS Antenna.
This active L1 antenna contains in its weather proof housing a high performance antenna and a low noise
amplifier. The connected GPS/GLONASS receiver supplies the antenna with 5.0 V DC voltage via the antenna
cable.
The proprietary quadrifiliar helix design, coupled with multistage filtering provides superior out-of-band re-
jection and lower elevation pattern performance than traditional patch antennas.
• Their unique radome shape sheds water and ice, while eliminating problems associated with bird perching.
• This antenna is made of materials that fully comply with provisions stipulated by EU directives RoHS
2002/95/EC.
• The antenna provides integrated lightning protection capability.
• The antenna also features ESD, reverse polarity protection and transit voltage suppression.
A standard coaxial cable with 50 ohm impedance should be used to connect the antenna to the receiver. The
max. length of cable between antenna and receiver is 70 meters (H155 - Low-Loss).
See data sheet "40 dB GPS Multi GNSS Timing Antenna with Integrated Lightning Protection" (pctel_gpsl1gl.pdf)
or download this document:
Multi GNSS Antenna
http://www.meinbergglobal.com/download/docs/other/pctel_gpsl1gl.pdf
SyncFire 1200 Date: 31st March 2021 35
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