33-HC771-28

## HC771 

## Multi-Constellation Antenna 

Frequency Coverage: GPS L1 | GALILEO E1 | BEIDOU B1 | GLONASS G1 

## Overview 

The patented HC771 helical antenna is designed for precision positioning, covering the GPS/QZSS-L1, GLONASS-G1, 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)]. 

Weighing only 24 g, The light and compact HC771 features a precisiontuned helix element that provides excellent axial ratios and operates without the requirement of a ground plane, making it ideal for a wide variety of applications, including unmanned aerial vehicles (UAVs). 

The HC771 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. 

All Tallysman housed helical antenna elements are protected by a robust military-grade IP67-compliant plastic enclosure. The enclosure’s base provides two threaded inserts for secure attachment, as well as a rubber O- ring around the outer edge to seal the antenna base and its integrated male SMA connector. 

Calian's helical family has passed a rigorous 30-hour vibration test procedure, consisting of five cycles of 2-hour tests per axis (x, y, z): 

- Cycle 1: 1.05 Grms; 

- Cycle 2: 1.20 Grms; 

- Cycle 3: 1.35 Grms; 

- Cycle 4: 3.67 Grms; 

- Cycle 5: 3.67 Grms. 

For mounting instructions, visit: 

https://www.tallysman.com/downloads/Helical_Mounting_Instruction.pdf 

## Applications 

- Autonomous unmanned aerial vehicles (UAVs) 

- Precision GNSS positioning 

- Precision land survey positioning 

- Mission-critical GNSS timing 

- Network timing and synchronization 

- Sea and land container tracking 

- Fleet management and asset tracking 

- Marine and avionics systems 

- Law enforcement and public safety 

Features 

- Very low noise preamp (2.0 dB typ.) 

- Axial ratio (≤ 0.5 dB at zenith) 

- LNA gain (28 dB typ.) 

- Low current (15 mA typ.) 

- ESD circuit protection (15 kV) 

- Invariant performance from 2.5 to 16 VDC 

- IP67, REACH, and RoHS compliant 

Benefits reception 

- Extremely light (24 g) 

- Ideal for RTK and PPP surveying systems 

- Excellent RH circular polarized signal 

- Great multipath rejection 

- Increased system accuracy 

- Excellent signal-to-noise ratio 

- Industrial temperature range 

- Rugged design, ideal for harsh environments 

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 

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

202407 

Revision: 

## Multi-Constellation Antenna 

Frequency Coverage: GPS L1 | GALILEO E1 | BEIDOU B1 | GLONASS G1 

## **Antenna** 

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

Technology Single-frequency, RHCP quadrifilar helix 

||Gain<br>Axial Ratio||
|---|---|---|
||dBic typ. at Zenith<br>dB at Zenith||
|L1<br>L2<br>L5<br>G1<br>G2<br>G3<br>E1<br>E5A<br>E5B<br>E6<br>B1<br>B2<br>B2a<br>B3<br>L5<br>L6<br>QZSS<br>-<br>-<br>-<br>-<br>BeiDou<br>3.0<br>≤ 0.5<br>-<br>IRNSS / NavIC<br>-<br>-<br>-<br>-<br>-<br>-<br>-<br>-<br>-<br>Galileo<br>3.5<br>≤ 0.5<br>-<br>-<br>-<br>-<br>GPS / QZSS<br>3.5<br>≤ 0.5<br>-<br>-<br>-<br>-<br>-<br>-<br>GLONASS<br>2.0<br>≤ 0.5<br>GNSS<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>~~eeee~~<br>~~ee~~<br>~~a a~~<br>~~a ee~~<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>~~eeee~~<br>~~ee~~<br>~~eeee~~<br>~~ee~~<br>~~a ee~~<br>~~ee ee~~<br>~~ee~~<br>~~eeee~~<br>~~ee~~<br>~~eeee~~<br>~~ee~~<br>~~es~~<br>~~ee~~<br>~~ee~~|||
|L-Band Services (1525 MHz - 1559 MHZ)<br>-<br>-|||
|Satellite Communications|||
|Iridium<br>-<br>-<br>Globalstar<br>-<br>-<br>~~a~~<br>~~ee~~|||
|Other|||
|Axial Ratio at 10°|Efficiency<br>-<br>-||
|PC Variation|± 4.0 mm (all freq.)<br>~~ee ee~~||
|**Mechanicals**|||
|Size|33.3 mm (dia.) x 54.2 mm (h.)||
|Weight|24 g||
|Radome|LEXAN™ EXL9330||
|Mount|2x M2.5 screws||
|SMA (male)<br>Available Connectors|||
|Operating Temperature<br>-40 °C to +85 °C<br>**Environmental**|||
|Storage Temperature<br>-55 °C to +95 °C|||
|Vibration|MIL-STD-810-G - Test Method 514.6||
|Shock|MIL-STD-810-G - Test Method 516.6||
|Salt Fog|MIL-STD-810-G - Test Method 509.6||
|Compliance<br>IP Rating|IPC-A-610, FCC, RED / CE Mark, RoHS, REACH<br>IP69K||
|Warranty|||
|Parts and Labour|3-year standard warranty||



|Frequency Bandwith||Out of Band Rejection|
|---|---|---|
|1559 - 1606 MHz||> 65 dB @ < 1500 MHz|
|||> 65 dB @ > 1700 MHz|
|Architecture|Pre-filtered||
|Gain|28 dB typ., 26 dB min.||
|Noise Figure|2.0 dB typ.||
|VSWR|< 1.5:1 typ., 1.8:1 max.||
|Supply Voltage Range|2.5 to 16 VDC nominal, up to 50mV p-p ripple|2.5 to 16 VDC nominal, up to 50mV p-p ripple|
|Supply Current|15 mA typ.||
|ESD Circuit Protection|15 kV air discharge||
|P 1dB Output|11 dBm typ.||
|Group Delay|-||
|PCO|32 mm @ L1|32 mm @ L1|
|**Mechanical Diagram- Units in 'mm'**<br>~~a~~|||



**==> picture [253 x 25] intentionally omitted <==**

**----- Start of picture text -----**<br>
Ordering Information<br>Part Number 33-HC771<br>**----- End of picture text -----**<br>


Please refer to our Ordering Guide to review available radomes and connectors at: https://www.tallysman.com/resource/tallysman-ordering-guide/ 

> © 2023 Calian Inc. 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. 

202407 

Revision: