8230AJ GPS/GNSS Anti Jam Outdoor Antenna

  • 8230AJ anti-jam antenna
  • 8230AJ with mount kit
  • 8230AJ flat roof mount

Open a New Window to Accurate Time for Your Network.

The Model 8230AJ is a high gain (40 dB) GNSS outdoor antenna covering GPS L1, GLONASS L1, BeiDou B1, Galileo E1, and QZSS L1. Similar to our proven Model 8230, it uses a three-stage low noise amplifier, a mid-section SAW, and a tight pre-filter to protect against saturation by high level sub-harmonics and L-band signals.

  • High bandwidth to receive GNSS signals:
    • GPS L1
    • GLONASS L1
    • BeiDou B1
    • Galileo E1
    • QZSS L1
  • Unique conical antenna pattern rejects interference from the horizon
  • Drop in replacement for the Model 8230 Outdoor Antenna for use in high interference situations
  • Uses the same cabling as the current Model 8230 and mounts to the same pipe supports with a new L bracket.
  • Designed for harsh environments (IP67 rated)
  • High out-of-band rejection
  • One-year limited warranty

Standard or Anti Jam (AJ) Antenna – Which Should I Use?

The standard antenna sees the entire view of sky, equally receiving signals from satellites at the horizon or the zenith and all points in between. However, there is increasing interference in the GNSS L1 band, whether unintentional from other transmitters like communications towers or intentional from illegal “privacy jammers”. The AJ antenna rejects signals for the lower elevation angles – where most of the interference comes from – and only receives signals from the higher elevation angles where the satellites are. Of course, this reduces the number of satellites the receiver will see, but for the timing application, only a few satellites are needed. Moreover, with multi-constellation receivers, there are an increasing number of satellites available. So you get all the performance in timing accuracy you would get with a standard antenna plus 20 dB or more of interference rejection.

Resources

Datasheets

More Info

The Model 8230AJ is a high gain (40 dB) GNSS outdoor antenna covering GPS L1, GLONASS L1, BeiDou B1, Galileo E1, and QZSS L1. Similar to our proven Model 8230, it uses a three-stage low noise amplifier, a mid-section SAW, and a tight pre-filter to protect against saturation by high level sub-harmonics and L-band signals.


pdf - 306 KB
Thursday, August 2, 2018

Success Stories

More Info
A customer with a major datacenter facility was experiencing issues with GNSS interference affecting its timing systems.  This case study describes the solution, using a low-cost anti-jam antenna.
pdf - 743 KB
Friday, April 20, 2018

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