• The AJ977XF Anti-Jamming antenna is designed to mitigate interference and jamming signals broadcast from near ground-based transmitters. The radiation pattern of the Low Elevation Angle Nulling Antenna (LEANA) provides 20 dB (Typical) wideband suppression for all GNSS band signals received at an elevation angle of 0° through to approximately 15°. This level of attenuation will mitigate a 600 Watt jamming signal broadcast at an elevation angle of 10°, 100m or greater away from the AJ977XF antenna.
  • The AJ977XF Anti-Jamming antenna is designed to mitigate interference and jamming signals broadcast from near ground-based transmitters. The radiation pattern of the Low Elevation Angle Nulling Antenna (LEANA) provides 20 dB (Typical) wideband suppression for all GNSS band signals received at an elevation angle of 0° through to approximately 15°. This level of attenuation will mitigate a 600 Watt jamming signal broadcast at an elevation angle of 10°, 100m or greater away from the AJ977XF antenna.
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AJ977XF Anti-Jamming Triple Band GNSS Antenna

AJ977XF Anti-Jamming Triple Band GNSS Antenna

$899.34 USD
$899.34 USD
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The AJ977XF supports GPS/QZSS-L1/L2/L5, GLONASS-G1/G2/G3, GalileoE1/E5a/E5b, BeiDou-B1/B2b/B2a, and NavIC-L5 frequency bands, including the satellite-based augmentation system (SBAS) available in the region of operation [WAAS (North America), EGNOS (Europe), MSAS (Japan), or GAGAN (India)].


The AJ977XF Anti-Jamming antenna is designed to mitigate interference and jamming signals broadcast from near ground-based transmitters. The radiation pattern of the Low Elevation Angle Nulling Antenna (LEANA) provides 20 dB (Typical) wideband suppression for all GNSS band signals received at an elevation angle of 0° through to approximately 15°. This level of attenuation will mitigate a 600 Watt jamming signal broadcast at an elevation angle of 10°, 100m or greater away from the AJ977XF antenna.

The combination of Tallysman’s low elevation angle nulling radiation pattern, and eXtended Filtering (deep filters and high IP3 (prevents saturation in the presence of noise)) technologies provides a one-two punch to jamming and radio frequency noise. At the same time, the AJ977XF’s radiation pattern above 20° elevation angle provides excellent gain and a phase center that supports accurate and precise positioning.

The Tallysman AJ977XF antenna is ideal of all mission critical positioning, navigation and timing applications. 

Product Number: 33-AJ977XF-01 (TNC straight female)

Product Datasheet: https://sites.calian.com/app/uploads/sites/8/2024/06/Calian%C2%AE-AJ977XF-Datasheet.pdf

Calian Ordering Guide: https://www.calian.com/advanced-technologies/calian-ordering-guide-en-2025-02-26/

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