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Tallysman Wireless TW3865 Embedded Antenna
Tallysman Wireless TW3865 Embedded Antenna
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  • TW 3865 GPS L1L2 and GLONASS G1G2 Antenna
  • Tallysman Wireless TW3865 Embedded Antenna

TW3865 Embedded GPS L1 & L2 + GLONASS G1 & G2 Antenna

Item# TW3865

This dual band GPS L1 & L2 and GLONASS G1 & G2 antenna, by Tallysman is especially designed for high-precision dual-frequency positioning. View Full Description

Category: L1L2 GPS
Manufacturer: Tallysman Wireless
Tallysman Wireless


TW3865 Embedded GPS L1L2 GLONASS G1G2 Antenna

This dual band GPS L1 & L2 and GLONASS G1 & G2 antenna by Tallysman is designed for precision dual-frequency positioning. It is ideal for dual frequency Precise Point Positioning (PPP) systems.
The TW3865 features a precision tuned, circular dual feed, stacked patch elements. Signals from 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. This provides truly circular response over the entire bandwidth of the antenna.
The TW3865 offers excellent axial ratio and a tightly grouped phase center. The TW3865 covers GPS L2 (1227.6MHz), GLONASS G2 (1248MHz centre), GPS L1/WAAS/EGNOS/MSAS (1575.42MHz) and GLONASS G1 (1602MHz, centre).
The OEM TW3865 comes with a standard 60mm diameter circular ground plane and a coaxial cable terminated with a connector (right angle MCX is shown in the drawing). Mounting holes are provided for attachment to larger ground planes.
Custom tuning and ground plane options may be available, depending on purchase level commitment.
  • Precision GPS Positioning
  • Dual Frequency RTK Receivers
  • Mission Critical GPS Timing
  • Military & Security
  • Fleet Management & Asset Tracking
  • Very low Noise Pream, <2dB.
  • Axial ratio: <2dB typ.
  • Tight Phase Center Variation
  • LNA Gain: 28 dB typ.
  • Low current: 25 mA typ.
  • Wide supply voltage: 2.5 to 16 VDC 
  • Ideal for L1/L2 RTK surveying systems
  • Ideal for L1/L2 Precise Point Positioning (PPP) systems
  • Excellent multipath rejection
  • Increased system accuracy
  • Great signal to noise ratio
  • IP67 and RoHS compliant
Available as an OEM / Embedded form as well.

TW3000 Family of Products 

ALL of the connector options with or without cables (max length 5m) are shown below. Please contact us with questions.

00 = SMA straight male (plug) 
01 = TNC female
02 = MCX straight male (plug) 
03 = MMCX straight male (plug) 
04 = SMB straight male (plug)
05 = MCX right angle male (plug) 
06 = MMCX right angle male (plug) 
10 = SMA Right Angle ** 
11 = Reverse polarity SMA**

12 = Waterproof SMA**
13 = SSMA **
15 = TNC male (plug) 
16 = N-Type Male** 
17 = BNC Male
18 = FME** 
19 = MMCX Female
NMO = NMO mount
20 = SMA Female
22 = R/A QMA**

23 = SMP**
24 = SMC Male
25 = SMC Straight Female 
26 = SMB Straight Female
27 = MCX Female Straight
28 = SSMCX Straight Plug**
29 = R/A SSMCX Plug **
30 = SMB with Overmold**
33 = MMCX straight male ** 
34x = FAKRA (replace “x” with colour code)**








Custom Cable Lengths: 0m-5m
Cable length tolerances: <1m: ±3.0mm, 1-4.9m: ±30mm, >5m: ±50mm

Connector Options Without Cable:
01 = TNC female

** Premiums apply. Please contact NavtechGPS for information and pricing.

Radome Options:
00=Dark Grey Conical 10=Dark Grey Low Profile 01=White Conical 11=White Low Profile