YX-OS52 SR-303 RTK High-Precision Multi-Frequency Helical Antenna – L1+L2+L5 Full-Band, Suction Cup Base + 3M SMA Female-to-Male Cable

Sale price: $40.00
Regular price: ~~$50.00~~
Regular price: $40.00
Unit price: per

Vendor: YanTechLab

Only 9 items in stock! Out of stock!

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Description

SR-303 is a full‑frequency quad‑helix antenna designed for GPS L1/L2/L5, BDS B1/B2/B3, GLONASS L1/L2, and GALILEO E1/E5a/E5b. With compact size and lightweight construction, it is widely used in navigation dispatch, tracking monitoring, and telemetry. The quad‑helix design provides stable phase center, high gain, and excellent low‑elevation reception — making it especially suitable for UAVs, handheld terminals, and high‑precision positioning modules.

Key features

Quad‑helix design: stable phase center · improves measurement accuracy
High gain: wide beamwidth · excellent low‑elevation reception
Low noise amplifier: high out‑of‑band rejection · low power consumption
Compact & lightweight: Φ28×58.5mm · ≤17g
Multi‑GNSS: GPS, BDS, GLONASS, GALILEO
IP67 waterproof · wide temperature range

Applications: UAV navigation, aerial photography, traffic monitoring, remote telemetry, handheld terminals, high‑precision positioning modules, RTK systems.

Frequency Support

GPS L1C/A, L1C, L2, L5

BeiDou B1C, B1I, B2a, B2b, B2I, B3I

GLONASS L1, L2

Galileo E1, E5a, E5b

Technical Specifications

Model	SR-303
Type	L1+L2+L5 · Quad‑helix
Polarization	Right‑hand circular polarization (RHCP)
Gain (dBi)	≥2.0 @ 90° elevation
Axial ratio (dB)	≤3.0 @ 90° elevation
LNA gain	36 ± 2 dB
VSWR	≤ 2.0
Noise figure	≤ 2.0 dB
DC supply	3.3 – 12 V
Operating current	≤ 45 mA
Input impedance	50 Ω

Mechanical Specifications

Dimensions	Φ28 mm × 58.5 mm
Connector	SMA‑J
Weight	≤ 17 g
Mounting	Suction cup base included (SMA female to SMA male · 3 m cable)

Environmental Specifications

Operating temperature	‑40℃ ~ +85℃
Storage temperature	‑55℃ ~ +85℃
Humidity	95% non‑condensing
Waterproof rating	IP67

Package Contents

SR-303 helical antenna ×1
Suction cup base with SMA female to SMA male cable (3 m) ×1

Terms and conditions

Shipping Information

Orders are prepared within 48 hours. Fast small-parcel logistics are used for international shipping.

USA / Europe: approximately 8–14 days (subject to variation)
Any abnormal situations will be communicated via email promptly

Returns & After-Sales Policy

If you have any questions after receiving the product, please contact us immediately. Returns or exchanges will be processed according to our return policy. Thank you for your understanding.