Timing & Sync
GNSS Timing & Synchronization Antennas
Mushroom-style precision timing antennas for 5G fronthaul, telecom towers, power substations, and IEEE 1588 PTP deployments. 1 KV lightning protection, 36 dB LNA, N-type connectors, IP67.
Application Overview
Why Timing Antennas Need Different Engineering
Timing deployments have different failure modes than navigation deployments. A navigation rover can tolerate brief signal outages; a 5G base station or a financial network grandmaster cannot. Timing antennas sit on exposed tower tops or substation yards for a decade or more, and they have to deliver stable pseudorange and clean multi-constellation signals through every lightning season and temperature cycle along the way. The TDXL-38X series is engineered for that service profile.
All six timing models (TDXL-380 through TDXL-385) share a common mechanical envelope — mushroom-style housing, ~220 g weight, N-type female connector — and share the same 1 KV lightning protection circuit. What differentiates them is band coverage: TDXL-380 is BDS B3I single-band; TDXL-381 is multi-system L1; TDXL-382 and TDXL-383 are dual-frequency (BDS + GPS / GPS dual-sat); TDXL-384 adds GLONASS and Galileo multi-frequency; TDXL-385 is the full-band choice with SBAS L-Band. Match the band coverage to the redundancy your timing stack requires.
Standard 36 ± 2 dB LNA supports tens of meters of coaxial run; for very long cable installations, contact us for inline amplifier options. Operating range is -40 °C to +80 °C (storage -45 °C to +85 °C), 95% non-condensing humidity, with IP67 sealing — specified for continuous outdoor service.
Key Specifications to Consider
Lightning Protection
1 KV integrated protection — standard for tower and substation installs.
Band Coverage
Single-band (TDXL-380/381) through full-band + SBAS (TDXL-385).
LNA Gain
36 ± 2 dB supports tens of meters of coax; inline amps available.
Connector
N-type female is standard across all timing models.
Phase Stability
Consistent phase center across satellite elevations for low timing jitter.
Product Catalog
Timing Antenna Models
6 models in this category. Click Request Quote on any row to pre-fill the inquiry form.
| Model | Type | Frequencies | Key Specs | Form Factor | Action | |
|---|---|---|---|---|---|---|
 | TDXL-380 | BDS Single-Frequency | BDS B3I (1268.52 ±10.23 MHz) | 1KV lightning · 36dB LNA · Phase center ±5mm · Axial ratio ≤3dB | Mushroom · Ø dome · 220g · N-type female | |
| TDXL-381 | GPS Single-Frequency | GPS L1 · BDS B1 · GLONASS G1 (1551–1608 MHz) | 1KV lightning · 36dB LNA · RHCP · NF ≤2dB | Mushroom · 220g · N-type female | ||
| TDXL-382 | BDS Dual-Frequency | BDS B3/B1 · GPS L1 · GLONASS G1 | 1KV lightning · Dual-band · Dual-frequency delay ≤5ns | Mushroom · 220g · N-type female | ||
| TDXL-383 | GPS Dual-Frequency | GPS L1/L5 · BDS B1 · GLONASS · Galileo E1/E5a | 1KV lightning · Dual-band · IP67 | Mushroom · 220g · N-type female | ||
| TDXL-384 | Multi-Satellite Multi-Frequency | BDS B1/B2/B3 · GPS L1/L2 · GLONASS G1/G2 · Galileo E1/E5b | Full multi-system coverage · 36dB LNA | Mushroom · 220g · N-type female | ||
| TDXL-385 | Full-Band | BDS B1/B2/B3 · GPS L1/L2/L5 · GLONASS G1/G2 · Galileo E1/E2/E5a/E5b/E6 · SBAS L-Band | Maximum constellation coverage · 1KV lightning | Mushroom · 220g · N-type female |
TDXL-380
BDS Single-Frequency
- Frequencies
- BDS B3I (1268.52 ±10.23 MHz)
- Key Specs
- 1KV lightning · 36dB LNA · Phase center ±5mm · Axial ratio ≤3dB
- Form Factor
- Mushroom · Ø dome · 220g · N-type female
TDXL-381
GPS Single-Frequency
- Frequencies
- GPS L1 · BDS B1 · GLONASS G1 (1551–1608 MHz)
- Key Specs
- 1KV lightning · 36dB LNA · RHCP · NF ≤2dB
- Form Factor
- Mushroom · 220g · N-type female
TDXL-382
BDS Dual-Frequency
- Frequencies
- BDS B3/B1 · GPS L1 · GLONASS G1
- Key Specs
- 1KV lightning · Dual-band · Dual-frequency delay ≤5ns
- Form Factor
- Mushroom · 220g · N-type female
TDXL-383
GPS Dual-Frequency
- Frequencies
- GPS L1/L5 · BDS B1 · GLONASS · Galileo E1/E5a
- Key Specs
- 1KV lightning · Dual-band · IP67
- Form Factor
- Mushroom · 220g · N-type female
TDXL-384
Multi-Satellite Multi-Frequency
- Frequencies
- BDS B1/B2/B3 · GPS L1/L2 · GLONASS G1/G2 · Galileo E1/E5b
- Key Specs
- Full multi-system coverage · 36dB LNA
- Form Factor
- Mushroom · 220g · N-type female
TDXL-385
Full-Band
- Frequencies
- BDS B1/B2/B3 · GPS L1/L2/L5 · GLONASS G1/G2 · Galileo E1/E2/E5a/E5b/E6 · SBAS L-Band
- Key Specs
- Maximum constellation coverage · 1KV lightning
- Form Factor
- Mushroom · 220g · N-type female
Flagship Full-Band Timing
TDXL-385 — Full-Band Multi-Constellation Timing Antenna
The TDXL-385 delivers the widest frequency coverage of the GNSource timing series — every navigation band across BDS, GPS, GLONASS, and Galileo constellations, plus SBAS L-Band for satellite-based augmentation systems. The multi-feed miniaturized architecture ensures right-handed circular polarization and a stable ±5 mm phase center across the entire operating range. A 36 dB ±2 dB low-noise amplifier supports long cable runs to deep-mounted timing receivers, while integrated 1 KV lightning protection shields downstream equipment from surge events. The weatherproof mushroom radome handles outdoor rooftop deployment for base stations, CORS stations, and power substations through decades of operational life. Available with N-type female connectors and 5/8"-11UNC center-rod mounts that match industry-standard survey tripods.
- Operating bands
- BDS B1/B2/B3 · GPS L1/L2/L5 · GLONASS G1/G2 · Galileo E1/E2/E5a/E5b/E6 · SBAS L-Band
- Polarization
- RHCP
- Maximum gain
- ≥4.0 dBi
- Axial ratio
- ≤3 dB
- Elevation coverage
- 360°
- LNA gain
- 36 ± 2 dB
- Noise figure
- ≤2.0 dB
- Dual-frequency delay difference
- ≤5 ns
- Output VSWR
- <2.0:1
- Phase center
- ±5 mm
- Impedance matching
- 50 Ω
- Operating voltage
- 3.0–12V DC
- Current draw
- ≤55 mA
- Connector
- N-type (female)
- Mounting
- 5/8"-11UNC center rod
- Lightning protection
- 1 KV surge
- IP rating
- IP67
- Humidity
- 95% non-condensing
- Operating temperature
- -40°C to +80°C
- Storage temperature
- -45°C to +85°C
- Weight
- ≤220 g
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FAQ
Timing Antenna FAQs
Common deployment questions for 5G fronthaul, telecom towers, power grids, and IEEE 1588 PTP networks.
Why is 1 KV lightning protection important for timing antennas?
Timing antennas on telecom towers and power-grid substations are continuously exposed to high-voltage surges from nearby lightning strikes and switching transients. All TDXL-380 through TDXL-385 include an integrated 1 KV lightning-protection circuit — standard-grade protection for 5G base-station, synchronous-grid, and utility substation deployments.
How long of a cable run can I use with a timing antenna?
With the standard 36±2 dB LNA, TDXL-38X timing antennas support cable runs on the order of tens of meters — exact distance depends on cable specification (RG-8, LMR-400, etc.) and the downstream receiver's noise figure budget. For long-haul installations requiring 80 m or more, contact our team for inline amplifier or low-loss cable recommendations.
Which model should I choose for IEEE 1588 PTP and 5G fronthaul?
TDXL-384 (multi-satellite multi-frequency: BDS B1/B2/B3, GPS L1/L2, GLONASS G1/G2, Galileo E1/E5b) or TDXL-385 (full-band with additional SBAS L-Band) are recommended for 5G fronthaul and PTP deployments requiring multi-constellation redundancy and holdover stability. For cost-optimized L1-only deployments, TDXL-381 is sufficient.
What connectors do timing antennas use?
All TDXL-38X timing antennas use N-type female connectors — the standard RF interface for telecom-tower and substation installations. Weight is approximately 220 g per unit with mushroom-style housing.
What's the operating and storage temperature range?
Operating: -40 °C to +80 °C. Storage: -45 °C to +85 °C. Humidity: 95% non-condensing. IP67 sealed for long-term outdoor deployment through seasonal extremes.
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