# RF Antenna, 1.559 to 1.606GHz, GNSS/GPS/QZSS/GLONASS/Galileo/BeiDou, RHC, TNC N Connector

![Product image](https://novapart.co/image/farnell:4349953/)

**URL**: https://novapart.co/products/AJ977XF-01/rf-antenna-1559-to-1606ghz-gnss-gps-qzss-glonass
**SKU**: AJ977XF-01
**Manufacturer**: CALIAN
**Price**: €685.2600
**Stock**: 10+
**Lead Time**: 36 days (indicative)

## Specifications

| Parameter | Value |
|---|---|
| Gain | 40dB |
| Svhc | No SVHC (23-Jan-2024) |
| Vswr | 1.5 |
| Input Power | - |
| Antenna Type | GNSS / GPS / QZSS / GLONASS / Galileo / BeiDou / IRNSS / NavIC / SBAS |
| Frequency Max | 1.606GHz |
| Frequency Min | 1.559GHz |
| Product Range | - |
| Input Impedance | - |
| Antenna Mounting | Through Hole / TNC / N Connector |
| Antenna Polarisation | Right Hand Circular |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:4349953/)

## AJ977XF 

## Anti-Jam Multi-Constellation Triple-Band Antenna 

Frequency Coverage: GPS & QZSS L1, L2, L5 | GALILEO E1, E5a, E5b | BEIDOU B1, B2a, B2b | GLONASS G1, G2, G3 | NavIC L5 

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 Jam 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 was demonstrated to mitigate jamming signal broadcasts at an elevation angle of 10° such that the AJ977XF can be up to 10 times closer, compared to a standard HC977XF helical antenna, to the source of interference without being jammed. The combination of Calian's low elevation angle nulling radiation pattern and eXtended Filtering (deep filtering and high linearity) technologies provides a one-two punch to jamming and RF 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. 

Calian's eXtended Filter (XF) antenna technology has been designed to mitigate out-of-band signals and prevent GNSS antenna saturation. In North America, Ligado signals at 1525 - 1536 MHz can especially impact GNSS antennas that support space-based L-band correction services (1539 - 1559 MHz). New LTE signals in Europe [Band 32 (1452 - 1496 MHz)] and Japan [Bands 11 and 21 (1476 – 1511 MHz)] have also been observed to interfere with GNSS signals. In addition, Inmarsat satellite communication (uplink: 1626.5 - 1660.5 MHz) can also affect GNSS signals. Calian's custom XF filtering mitigates all existing signals and new Ligado and LTE signals, enabling the antennas and attached GNSS receivers to perform optimally. 

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

## Applications 

- Mission-critical global positioning 

- Timing applications 

- Law enforcement and public safety 

## Features 

- Great axial ratio (1.0 dB typ.) 

- Low LNA noise (2.5 dB typ.) 

- High-rejection XF Filtering 

- High-gain LNA (40 dB typ.) 

- Wide voltage input range (2.5 to 16 VDC) 

- ESD circuit protection (15 kV) 

- IP67 weather-proof housing 

- RoHS and REACH compliant 

## Benefits 

   - Operates under ground-based jamming 

   - Circular polarisation throughout the full bandwidth 

   - Superior multipath signal rejection 

   - Excellent signal-to-noise ratio 

   - Excellent out-of-band signal rejection 

   - Increased system accuracy 

   - Ideal for noisy RF environments 

- 20dB attenuation at 0-15° Elevation. 

About Calian: With global headquarters and manufacturing in Ottawa, Canada, Calian is a leading manufacturer of highprecision antennas and components for Global Navigation Satellite System (GNSS) applications. Calian’s mission is to support the needs of a new generation of positioning systems by delivering unprecedented antenna precision at competitive prices. Learn more at www.calian.com/gnss 

Contact us: info.gnss@calian.com T: +1 613 591-3131 

202506 

Revision: 

## Anti-Jam Multi-Constellation Triple-Band Antenna 

Frequency Coverage: GPS & QZSS L1, L2, L5 | GALILEO E1, E5a, E5b | BEIDOU B1, B2a, B2b | GLONASS G1, G2, G3 | NavIC L5 

Antenna Technology Triple-frequency, RHCP quadrifilar helix 

|||||Gain|Axial Ratio|
|---|---|---|---|---|---|
|||||dBic typ. at Zenith|dB at Zenith|
|GNSS||||||
||||L1|2.5|≤ 1.0|
|GPS / QZSS|||L2|3.7|≤ 1.0|
||||L5|1.9|≤ 1.0|
||||G1|1.8|≤ 1.0|
|GLONASS|||G2|3.0|≤ 1.0|
||||G3|3.0|≤ 1.0|
||||E1|2.5|≤ 1.0|
||||E5A|1.9|≤ 1.0|
|Galileo||||||
||||E5B|3.0|≤ 1.0|
||||E6|-|-|
||||B1|2.5|≤ 1.0|
||||B2b|3.3|≤ 1.0|
|BeiDou||||||
||||B2a|1.9|≤ 1.0|
||||B3|-|-|
|IRNSS / NavIC|||L5|1.9|≤ 1.0|
|QZSS|||L6|-|-|
|L-Band Services (1525 MHz - 1559 MHz)||L-Band Services (1525 MHz - 1559 MHz)||-|-|
|Satellite Communications<br>Iridium<br>Globalstar<br>Other<br>~~i~~||||-<br>-<br>-<br>-<br>~~eee~~||
|Axial Ratio at 10°||-||Efficiency|-|
|PC Variation||-||PCO||
|Mechanicals||||||
|Size|||90.0 mm (dia.) x 180 mm (h.)|90.0 mm (dia.) x 180 mm (h.)||
|Weight|||245 g|||
|Radome|||Radome: EXL9330 , Base: Aluminum|||
|Mount|||Though-hole|||
|Available Connectors|||TNC or type-N (female)|||
|Environmental||||||
|Operating Temperature|||-40 °C to + 85 °C|-40 °C to + 85 °C||
|Storage Temperature|||-50 °C to + 95 °C|-50 °C to + 95 °C||
|Vibration|||MIL-STD-810D Method 514.3-1|||
|Shock|||Vertical axis: 50 G, other axes: 30 G|||
|Salt Fog|||-|||
|IP Rating|||IP67|||
|Compliance|||IPC-A-610, FCC, RED / CE Mark, RoHS, REACH|||
|Warranty||||||
|Parts and Labour|||3-year standard warranty|||



Low Noise Amplifier (LNA) - Measured at 3V and 25 ° C 

|Frequency Bandwith|Frequency Bandwith|Out of Band Rejection|
|---|---|---|
|Lower Band|1164 -1254 MHz|> 85dB @ < 1100 MHz<br>> 82dB @ > 1300 MHz<br>> 90dB @ < 1325 MHz|
|L-Band Corr.|-|> 75 dB @ < 1526 MHz<br>> 47 dB @ < 1536 MHz<br>> 35 db @ > 1626 MHz<br>> 90 dB @ > 1700 MHz|
|Upper Band|1559 - 1606 MHz||



|Architecture|eXtended Filtering|
|---|---|
|Gain|40 dB typ.|
|Noise Figure|2.5 dB typ.|
|VSWR|< 1.5:1 typ., 1.8:1 max.|
|Supply Voltage Range|2.5 to 16 VDC nominal (12 VDC rec. max..)|
|Supply Current|62 mA typ.|
|ESD Circuit Protection|15 kV air discharge|
|P 1dB Output|15 dBm typ.|
|Group Delay|10 ns (L1), 4 ns (L2), 11 ns (L5)|



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Ordering Information 

> Part Number 33-AJ977XF-xx where     xx = connector type, 01 = TNC (female), 14 = type-N (female) 

Please refer to our Ordering Guide to review available radomes and connectors at: https://at.calian.com/gnss/information-support/part-number-ordering-guide/ 

> © 2025 Calian Ltd. All rights reserved. Calian, the “Confidence. Engineered.” tag line and the Calain logo are trademarks or registered trademarks of Calian Inc. and/or its affiliates in Canada and certain other countries. All other trademarks mentioned in this document are the property of their respective owners. The information presented is subject to change without notice. Calian assumes no responsibility for any errors or omissions in this document. Calian hereby disclaims any or all warranties and liabilities of any kind. 

Revision: 202506 



## Links

- [View this product on Novapart](https://novapart.co/products/AJ977XF-01/rf-antenna-1559-to-1606ghz-gnss-gps-qzss-glonass)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/tallysman-wireless/aj977xf-01/rf-antenna-1-559ghz-to-1-606ghz/dp/4349953)
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