Helical Technology

Tallysman® helical antennas are designed for applications that require high performance and versatility, with an absolute minimum of weight, such as Unmanned Aerial Vehicles (UAV’s).

Tallysman®’s quadrifilar helical (HC) technology features a precision-tuned helix antenna element with excellent gain and axial ratio over all elevation and azimuth angles that help to minimize multipath. The antennas feature low-current, low-noise amplifiers (LNA) with an integrated low-loss pre-filter to protect against harmonic interference from high-amplitude interfering signals, providing a high signal-to-noise ratio. With their extremely low weight and their excellent performance without a ground plane, Tallysman® helical antennas are ideal for precise point positioning (PPP) and real-time kinematic (RTK) applications.

The Helical antenna family features:

Extreme lightweight, ranging from 4 g to 42 g
A novel helical antenna element delivering excellent axial ratio and multipath rejection
Broad GNSS band coverage, including single, dual, triple, and L-band corrections services
Robust, military-grade, IP67-compliant plastic enclosure.
An extremely low noise amplifier (LNA) combined with a pre-filter
Ideal design and performance for real-time kinematic (RTK) and precise point positioning (PPP) applications
A certified Iridium model
A choice of housed and embedded models

Tallysman® Helical Antenna Family

Model	Signals Supported	Weight	Horizontal Phase Center Variation	Antenna Connector	Mounting
HC600	Iridium Passive	24 g	N/A	SMA	2 screws (2.5 mm)
HC600E	Iridium Passive	4 g	N/A	MCX	mounting ring
HC610	Iridium Active	24 g	N/A	SMA	2 screws (2.5 mm)
HC610E	Iridium Active	4 g	N/A	MCX	mounting ring
HC771	L1, G1, E1, B1	24 g	±3 mm	SMA	2 screws (2.5 mm)
HC771E	L1, G1, E1, B1	4 g	±3 mm	MCX	mounting ring
HC843	GNSS/QZSS-L1/L2, GLONASS-G1/G2, Galileo-E1, BeiDou-B1 + Passive Iridium	42 g	±3 mm	SMA	3 screws (2.5 mm)
HC843E		8 g	±3 mm	MCX	mounting ring
HC860	GNSS/QZSS-L1/L2, GLONASS-G1/G2, Galileo-E1, BeiDou-B1 + Active Iridium	42 g	±3 mm	SMA	3 screws (2.5 mm)
HC860E		8 g	±3 mm	MCX	mounting ring
HC871	L1/L2, G1/G2, E1, B1	29 g	±3 mm	SMA	2 screws (2.5 mm)
HC871E	L1/L2, G1/G2, E1, B1	5 g	±3 mm	MCX	mounting ring
HC872	L1/L2, G1/G2, E1, B1, L-band correction services	42 g	±3 mm	SMA	3 screws (2.5 mm)
HC872E	L1/L2, G1/G2, E1, B1, L-band correction services	8 g	±3 mm	MCX	mounting ring
HC882	L1/L2, G1/G2/G3, E1/E5b, B1/B2, L-band corrections services	42 g	±3 mm	SMA	3 screws (2.5 mm)
HC882E	L1/L2, G1/G2/G3, E1/E5b, B1/B2, L-band corrections services	8 g	±3 mm	MCX	mounting ring
HC976	L1/L2/L6, G1/G2, E1/E6, B1/B3, L-band corrections services	42 g	±3 mm	SMA	3 screws (2.5 mm)
HC976E	L1/L2/L6, G1/G2, E1/E6, B1/B3, L-band corrections services	8 g	±3 mm	MCX	mounting ring
HC977	L1/L2/L5, G1/G2/G3, E1/E5ab, B1/B2/B2a, L-band corrections services	42 g	±3 mm	SMA	3 screws (2.5 mm)
HC977E		8 g	±3 mm	MCX	mounting ring
HC990E	GPS/QZSS-L1/L2/L5, QZSS-L6, GLONASS-G1/G2/G3, Galileo-E1/E5a/E5b/E6, BeiDou-B1/B2/B2a/B3, NavIC-L5 + L-Band correction services	11 g	TBD	RG174 cable	mounting ring
HC997E	GPS/QZSS-L1, GPS/QZSS-L2, GPS/QZSS-L5, GLONASS-G1, GLONASS-G2, GLONASS-G3, Galileo-E1, Galileo-E5a, Galileo-E5b, BeiDou-B1, BeiDou-B2, BeiDou-B2a, NavIC-L5, L-band correction services	11 g	TBD	RG174 cable	mounting ring