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Tallysman TW4821 Antenna
Tallysman TW4821 Antenna
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TW4821 Wideband Dual Feed Beidou / Galileo / GPS Antenna

Item# TW4821

The Tallysman Wireless TW4821 antenna features a novel 25mm dual feed wideband patch element that provides excellent multipath rejection and a more linear carrier phase response that is greatly improved across the full frequency bandwidth. It is especially suitable for high accuracy applications, and also offers high out of band signal rejection. View Full Description

Category: GNSS
Manufacturer: Tallysman Wireless
Tallysman Wireless
 


 
 
 
 
The TW4821 by Tallysman Wireless is a compact dual feed magnetic mount antenna covering the BeiDou B1, GPS L1, Galileo E1 and SBAS (WAAS, EGNOS, QZSS & MSAS) frequency band (1557 to 1593 MHz). The TW4821 features a novel 25mm dual feed wideband patch element that provides excellent multipath rejection and a more linear carrier phase response by virtue of the axial ratio that is greatly improved across the full frequency bandwidth. It is especially suitable for high accuracy applications, and also offers high out of band signal rejection.
 
The two feeds from the patch element are summed in a 90° Hybrid then input to a first stage Low Noise Amplifier (LNA), followed by a mid-section SAW and a second low noise gain stage.
 
The TW4821 is the smallest dual feed, high performance antenna available. It is housed in a compact IP67 magnetic mount enclosure. It is available with a wide range of connector options.
 
Applications
  • Cost Sensitive Mission Critical Positioning
  • Military & Security
  • Covert Surveillance
  • Fleet Management & Asset Tracking
Features
  • Dual-feed patch element
  • 40% wider bandwidth, small footprint
  • Axial ratio: <2dB typ.
  • Low noise LNA: 1 dB
  • High rejection mid-section SAW filter
  • High gain: 28 dB typ.
  • Wide voltage input range: 2.5 to 16 VDC
  • IP67 weather proof housing
  • Low Power: 10mA typ. at 2.3Vcc min.
Benefits
  • 1dB Bandwidth Includes BeiDou B1, GPS-L1, and Galileo E1
  • Greatly enhanced multipath rejection
  • Improved GNSS reliability
  • Excellent signal to noise ratio
  • RoHS compliant
  • Ideal for harsh environments
  • Excellent out of band signal rejection

TW4000 Family of Products 

ALL of the connector options with cables (max length 5m) are shown below. Please contact us with questions

This antenna comes with a magnet by default. If you need an antenna with NO MAGNET, please contact us.

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
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

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