Antennas

If you want to use the RasPiGNSS expansion board for PPP or RTK applications, you need to make absolutely sure to get the most from satellite signals available, thus using a quality antenna capable of receiving GPS, GLONASS, GALILEO, and SBAS signals is strongly encouraged.

In our tests with the RasPiGNSS module we tested both no-brand stock GPS antennas as well as high-gain quality active GPS/GLONASS antennas from Tallysman. Our tests indicate that quality antennas like the Tallysman TW-4421/TW-4721 or TW-2410/TW-2710 outperform standard GPS antennas by far, regarding both signal strength and fix quality.

Since all of those antennas are so-called active antennas, they use a built-in LNA (Low-Noise Amplifier) for signal filtering and amplification. In contrast to passive antennas which need no power supply, this built-in LNA needs electrical power with specific voltage and electrical current delivery capabilities (See the FAQ for more details on antenna compatbility). All of the active Tallysman GNSS antennas offered here feature a built-in LNA which fits nicely with the power delivery capabilities of the NV08C-CSM on the RasPiGNSS “Aldebaran” module in terms of output voltage and electrical current delivery.

Note that since the RasPiGNSS “Aldebaran” uses the upper-L-band NV08C-CSM GNSS receiver chip, therefore selecting a suitable GNSS antenna covering the L1 GPS satellite band at a minimum is important. To utilize the GLONASS satellite system as well, make sure the antenna is capable of receiving the G1 band as well, as the RasPiGNSS “Aldebaran” does. Additionally, for GALILEO satellite system reception, the E1 band has to be supported as well. The RasPiGNSS “Aldebaran” will support all those bands (L1, G1, and E1) with the newest firmware. For details about GNSS satellite bands and their frequency allocation scheme, see Navipedia.

We are now able to provide a selection of recommended Tallysman antennas in our webshop for your convenience.

GPS/GLONASS/GALILEO/BEIDOU Antennas

These antennas are capable of receiving the GPS/QZSS L1, GLONASS G1, Galileo E1, BeiDou B1, as well as SBAS (WAAS, QZSS, EGNOS & MSAS) GNSS satellite frequency bands.

Tallysman™ TW-2710

Ideal for precision industrial, agricultural and all challenging applications the TW2710 provides excellent circular polarized signal reception, great multi-path and out-of-band signal rejection.

The TW2710 features a customizable high performance, dual-feed, wide band patch element. Its Low Noise Amplifier (LNA) configuration provides a LNA for each feed, a mid section mid-section Surface Acoustic Wave (SAW) filter for the combined signal, followed by a final stage of LNA. This configuration provides excellent axial ratio that is constant across the full frequency band.

The TW2710 is housed in an industrial-grade weather-proof enclosure that can be surface mounted via magnet, screws or adhesive material, and is delivered with 5m cable and SMA male connector suitable for connecting to the RasPiGNSS module.

Please see the Tallysman TW-2710 product page for detailed specifications or download the data sheet directly.

TLM-TW-2710, Tallysman TW-2710 GNSS antenna, EUR 130.00 p.pc. excl. VAT
 

Tallysman™ TW-4721

Ideal for high accuracy applications while providing high out of band signal rejection, the TW4721 is the smallest dual feed, high performance antenna available, providing truly circular response over its entire bandwidth thereby producing superior multi-path signal rejection.

The TW4721 features a novel 25mm dual-feed wide-band patch element that provides a more linear carrier phase response by virtue of the axial ratio that is greatly improved across the full frequency bandwidth. The signals from the two orthogonal feeds are combined in a hybrid combiner, amplified in a wide-band LNA, then band-split for narrow filtering in each band and further amplified prior to recombination at the output.

The TW4721 is housed in a compact IP67 compliant enclosure that can be surface mounted via magnet, screws or adhesive material and is delivered with a 3m cable and SMA male connector suitable for connecting to the RasPiGNSS “Aldebaran” module.

Please see the Tallysman TW-4721 product page for detailed specifications or download the data sheet directly.

TLM-TW-4721, Tallysman TW-4721 GNSS antenna, EUR 69.00 p.pc. excl. VAT
 

Tallysman™ TW-1721

Ideal for applications that require high precision positioning and timing in a small form factor, the TW1721 provides superior multi-path signal rejection, a linear phase response, and tight Phase Centre Variation (PCV).

Featuring a compact 25mm dual-feed wideband patch element, the TW1721 provides a truly circularly polarized response, with a typical axial ratio of less than 2dB over the full bandwidth.

The antenna comes with a short 15cm cable with an MCX right angle male plug. We include an MCX to SMA male adapter for connecting to the RasPiGNSS “Aldebaran”‘s SMA female socket.

Please see the Tallysman TW-1721 product page for detailed specifications or download the data sheet directly.

TLM-TW-1721, Tallysman TW-1721 GNSS antenna, EUR 65.00 p.pc. excl. VAT
 

GPS/GLONASS antennas

These antennas are capable of receiving the GPS/QZSS L1, GLONASS G1, and SBAS (WAAS, EGNOS, GAGAN, MSAS) satellite frequency bands.

Tallysman™ TW-2410

The TW-2410 is especially designed for precision industrial, agricultural and military applications and offers excellent circular polarized signal reception, multipath rejection and out of band signal rejection. It is ideal for use in Precise Point Positioning (PPP) systems which require only a single frequency. With its large patch element of 57mm diameter it offers excellent SNR and signal quality even in adverse reception environments like tree canopy etc. The TW-2410 is delivered with 5m cable and SMA male connector suitable for connecting to the RasPiGNSS module.

Please see the Tallysman TW-2410 product page for detailed specifications or download the data sheet directly.

TLM-TW-2410, Tallysman TW-2410 GNSS antenna, EUR 104.00 p.pc. excl. VAT
 

Tallysman™ TW-4421

Low-cost, small form-factor, dual-feed GPS/GLONASS magnetic mount antenna. Due to its novel dual-feed wideband patch element it provides excellent multipath rejection capabilities, and is therefore best suited for mobile applications in complex urban environments (urban canyons, etc.). The TW-4421 is delivered with 3m cable and SMA male connector suitable for connecting to the RasPiGNSS module.

Please see the Tallysman TW-4421 product page for detailed specifications or download the data sheet directly.

TLM-TW-4421, Tallysman TW-4421 GNSS antenna, EUR 59.00 p.pc. excl. VAT
 

Tallysman™ TW-1421

Featuring similar electrical specifications as the TW-4421, this antenna is a bare-bones version designed for applications in embedded systems or custom builds. It has no housing, but provides a circular 35mm thin mounting plate with M2 holes around the 25mm square patch element.

The antenna comes with a short 15cm cable with an MCX right angle male plug. We include an MCX to SMA male adapter for connecting to the RasPiGNSS “Aldebaran”‘s SMA female socket.

Please see the Tallysman TW-1421 product page for detailed specifications or download the data sheet directly.

TLM-TW-1421, Tallysman TW-1421 GNSS antenna, EUR 56.00 p.pc. excl. VAT
 

⯇ RasPiGNSS "Aldebaran" ⯅ GNSS Products