Helix Antenna 868MHz
Helix Antenna 868MHz
Helix Antenna 868MHz - Spring-Type RF Antenna for LoRa & ISM Band
Upgrade your wireless project with this compact 868MHz helix antenna, ideal for LoRa, Sigfox, and ISM band applications. Its spring-coil design delivers reliable RF performance in a minimal footprint, perfect for embedded systems and IoT nodes. Ships fast from Bengaluru with full technical support and warranty from The Tech Depot.
Specifications
| Specification | Value |
| Frequency | 868MHz |
| Antenna Type | Helical / Spring Coil |
| Impedance | 50Ohm |
| VSWR | <= 2.0 |
| Gain | 2 dBi |
| Polarization | Linear |
| Mounting | PCB Solder (Through-Hole) |
| Connector Type | Direct Solder to PCB |
| Dimensions | 6mm Diameter x 20mm Height |
| Operating Temperature | -40 degreesC to +85 degreesC |
Why Choose This?
- Reliable RF Performance: Precision-wound helical element ensures consistent 868MHz tuning and low VSWR, unlike generic spring antennas that drift off-frequency and degrade your link budget.
- Ultra-Compact Footprint: The spring-coil form factor solders directly onto your PCB, eliminating bulky connectors and external antenna cables - perfect for space-constrained IoT enclosures and wearable nodes.
- Bengaluru-Based Support: Get fast shipping across India, hands-on technical guidance for antenna placement and ground plane design, and hassle-free returns from The Tech Depot.
Project Ideas
- LoRa Sensor Network: Solder this antenna onto an RFM95W or SX1276-based node for long-range environmental monitoring across farms, campuses, or industrial sites on the 868MHz band.
- Smart Metering Gateway: Build a compact wireless gateway that collects utility data from multiple endpoints using the 868MHz ISM frequency for reliable building-to-building communication.
- GPS Asset Tracker: Integrate this helix antenna into a battery-powered tracker PCB paired with a Sigfox or LoRaWAN module for real-time fleet and shipment monitoring across India.
What's in the Box
- 1x Helix Antenna 868MHz (Spring-Type, PCB Mount)
Frequently Asked Questions
Does this antenna require a ground plane on the PCB?
Yes. For optimal performance, provide a ground plane of at least 30mm x 30mm on your PCB beneath and around the antenna solder point. This ensures proper impedance matching and radiation efficiency at 868MHz.
Can I use this antenna for 915MHz applications?
This antenna is tuned specifically for 868MHz. While it may radiate at 915MHz, the VSWR and efficiency will be degraded. For 915MHz projects, choose a dedicated 915MHz helix antenna for best results.
How do I solder this antenna to my PCB?
Insert the bottom lead of the helix into the designated through-hole pad on your PCB and solder it in place. Keep the antenna vertical and away from metal enclosure walls or large copper pours for best radiation.
Is this antenna compatible with LoRa modules like RFM95W and SX1276?
Absolutely. It pairs perfectly with any 868MHz LoRa, Sigfox, or sub-GHz ISM module that has a 50Ohm antenna output. Simply connect the antenna pad to the module's RF output trace.
What is the communication range I can expect?
Range depends on transmit power, receiver sensitivity, and environment. With a LoRa module at 14 dBm and this antenna, expect 1-3 km in urban areas and up to 8-10 km in open line-of-sight conditions.
Can this antenna be used outdoors?
The antenna itself is robust and rated for -40 degreesC to +85 degreesC. However, it is not waterproof on its own. For outdoor deployments, mount it inside a weatherproof IP65-rated enclosure to protect the PCB and antenna from moisture.
Buy Helix Antenna 868MHz Online in India
Purchase the Helix Antenna 868MHz online at The Tech Depot - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on Helix Antenna 868MHz with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.
Looking to buy Helix Antenna 868MHz at the best price in India? The Tech Depot offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.