33-HC843E-25

## HC843E 

## Embedded Multi-Constellation Dual-Band and Iridium Switchable Antenna 

**Frequency Coverage:** GPS L1, L2 | GALILEO E1 | BEIDOU B1 | GLONASS G1, G2 | Iridium + L-Band 

The patented dual-purpose (GNSS and Iridium signal reception) HC843E embedded helical antenna is designed for precision positioning within the GPS/QZSS-L1/L2, GLONASS-G1/G2, Galileo-E1, and BeiDou-B1 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 HC843E also passively supports communications over voice and data modems on the Iridium® frequency band (1616.0 - 1626.5 MHz). 

The HC843E is switchable between the passive Iridium and the active GNSS antenna: an input voltage lower than 5.2 VDC engages the GNSS antenna, while an input voltage above of 5.5 and above invokes the passive Iridium antenna.. 

Weighing only 8 g, the light and compact HC843E features a precisiontuned helix element that provides excellent axial ratios and operates without the requirement of a ground plane, making it ideal for a variety of applications, including uncrewed aerial vehicles (UAVs). 

The HC843E features an industry-leading low current, low-noise amplifier (LNA) that includes an integrated low-loss pre-filter to prevent harmonic interference from high-amplitude signals, such as 700 MHz band LTE and other nearby in-Band cellular signals. 

Tallysman provides an optional embedded helical mounting ring (PN: 230220-0 for the HC843E), which traps the outer edge of the antenna circuit board to the host circuit board or to any flat surface. Tallysman also provides support for installation and integration of embedded helical antennas to enable the integrator to achieve a successful installation and obtain optimum antenna performance. 

Mounting instructions available on our product page. 

   - Benefits 

   - • Extremely light (8 g) • Ideal for RTK and PPP surveying systems 

- Applications Features Benefits • Iridium® voice and data applications • Low noise preamp (3.3 dB typ.) • Extremely light (8 g) • Autonomous uncrewed aerial vehicles (UAVs) • Axial ratio (≤ 0.5 dB at zenith) • Precision GNSS positioning • LNA gain (25 dB typ., 23 dB min.) • Precision land survey positioning • Low current (GNSS: 23 mA, Iridium: 3.6 mA • Great multipath rejection • Mission-critical GNSS timing typ.) • Increased system accuracy • Network timing and synchronization • ESD circuit protection (15 kV) • Excellent signal-to-noise ratio • Sea and land container tracking • Invariant performance from 2.5 to 16 VDC • Industrial temperature range 

   - Excellent RH circular polarized signal reception 

- Network timing and synchronization • Sea and land container tracking 

      - Excellent signal-to-noise ratio 

      - Industrial temperature range 

   - GNSS-mode: 2.5 to 5.0 VDC 

- Fleet management and asset tracking 

   - Iridium-mode: 5.5 to 16 VDC 

- Marine and avionics systems 

- Law enforcement and public safety 

- REACH, and RoHS compliant 

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 

Revision: 202309 

## Embedded Multi-Constellation Dual-Band and Iridium Switchable Antenna 

**Frequency Coverage:** GPS L1, L2 | GALILEO E1 | BEIDOU B1 | GLONASS G1, G2 | Iridium + L-Band 

|Frequency Bandwith|Frequency Bandwith|Out of Band Rejection|
|---|---|---|
|Lower Band|1217 - 1255 MHz|> 35 dB @ < 1100 MHz<br>> 30 dB @ < 1200 MHz|
|L-Band Corr.|-|> 36 dB @ < 1400 MHz<br>> 40 dB @ < 1500 MHz<br>> 38 dB @ > 1625 MHz<br>> 45 dB @ > 1700 MHz|
|Upper Band|1559 - 1626.5 MHz||



||Antenna|||||Low Noise Amplifier (LNA)|Low Noise Amplifier (LNA)|Low Noise Amplifier (LNA)- Measured at 3V and 25|- Measured at 3V and 25|- Measured at 3V and 25|- Measured at 3V and 25|- Measured at 3V and 25°C||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
||Technology||Dual-frequency, RHCP quadrifilar helix|||||||||||
|||||||Frequency Bandwith||||||Out of Band Rejection|Out of Band Rejection|
||||Axial Ratio<br>Gain|||||||||||
|||||||Lower Band||1217 - 1255 MHz|1217 - 1255 MHz|||> 35 dB @ < 1100 MHz<br>> 30 dB @ < 1200 MHz||
||||dBic typ. at Zenith<br>dB at Zenith|||||||||||
||GNSS|||||L-Band Corr.|||-|||||
|||||||||||||> 36 dB @ < 1400 MHz||
||||L1<br>2.2<br>≤ 0.5<br>~~re~~|||||||||> 40 dB @ < 1500 MHz||
||GLONASS<br>GPS / QZSS||L2<br>L5<br>G1<br>G2<br>G3<br>2.6<br>≤ 0.5<br>2.1<br>≤ 0.5<br>2.4<br>≤ 0.5<br>-<br>-<br>-<br>-<br>~~a re~~<br>~~a~~<br>~~ee eee~~<br>~~a~~<br>~~ee~~<br>~~a~~<br>~~ee~~<br>~~a~~<br>~~a~~|||Gain<br>Architecture<br>Upper Band||25 dB typ., 23 dB min<br>Pre-filtered<br>1559 - 1626.5 MHz<br>> 38 dB @ > 1625 MHz<br>> 45 dB @ > 1700 MHz||||||
|E1<br>E5A<br>E5B<br>E6<br>B1<br>B2b<br>B2a<br>B3<br>L5<br>L6<br>-<br>-<br>-<br>-<br>-<br>-<br>-<br>-<br>-<br>-<br>IRNSS / NavIC<br>-<br>-<br>BeiDou<br>2.2<br>≤ 0.5<br>QZSS<br>Galileo<br>2.2<br>≤ 0.5<br>-<br>Satellite Communications<br>-<br>L-Band Services (1525 MHz - 1559 MHZ)<br>-<br>-<br>-<br>-<br>~~a~~<br>~~es ee ee~~<br>~~a~~<br>~~ee~~<br>~~a a~~<br>~~eee~~<br>~~a~~<br>~~a~~<br>~~aeeee~~<br>~~a~~<br>~~ee~~<br>~~a~~<br>~~eeeee~~<br>~~a~~<br>~~es~~<br>~~ee~~<br>~~ee~~<br>~~ee ee~~|||||a|Group Delay<br>P 1dB Output<br>Supply Voltage Range<br>Supply Current<br>Noise Figure<br>VSWR<br>ESD Circuit Protection<br>Mechanical Diagram- Units in 'mm'<br>a|||15 ns (L1), 12 ns (L2)<br>< 1.5:1 typ., 1.8:1 max.<br>GNSS: 2.5 to 5.0 VDC | Iridium: 5.5 to 16 VDC<br>GNSS: 23 mA typ. | Iridium: 3.6 mA typ.<br>3.3 dB typ.<br>11 dBm typ.<br>15 kV air discharge<br>- Units in 'mm'<br>a<br>0||||GNSS: 2.5 to 5.0 VDC | Iridium: 5.5 to 16 VDC<br>GNSS: 23 mA typ. | Iridium: 3.6 mA typ.<br>a|
|Iridium<br>2.5<br>≤ 0.5<br>Globalstar<br>-<br>-<br>~~EE~~<br>~~a~~||||||||||||tty||
||PC Variation<br>Other<br>Axial Ratio at 10°|-<br>Efficiency<br>-<br>± 3.0 mm (all freq.)<br>PCO (mm)<br>-<br>~~ee eee~~||||||||||=|]<br>sic||
||Mechanicals|||||||oO|||||||
||Mechanical Size||38.7 mm (dia.) x 51.5 mm (h.)|||||||||||
||Radome<br>Weight||8 g<br>-||||al|||||MCX ST.Jack||
||Mount||Helical mounting ring P/N 23-0220-0|||||||||||
||Available Connectors||MCX (female)|||||||||||
||Environmental|||||||||||||
||Operating Temperature||-40 °C to +85 °C|||||||||||
||Storage Temperature||-55 °C to +95 °C|||||||||||
||Vibration||MIL-STD-810-G - Test Method 514.6|||||||D 30.65||||
||Shock||-||||||||||||
||Salt Fog||-|||**Ordering Information**||||||||
||IP Rating<br>Compliance||-<br>IPC-A-610, FCC, RED / CE Mark, RoHS, REACH|||Part Number|||||||33-HC843E|
||Warranty|||||||||||||
||Parts and Labour||1-year standard warranty|||Please refer to ourOrdering Guide|Ordering Guide|Ordering Guide|Ordering Guideto review available radomes and connectors at:|to review available radomes and connectors at:|to review available radomes and connectors at:|to review available radomes and connectors at:|to review available radomes and connectors at:|



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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. 

202309 

Revision: