433MHz SMA Male Stub Antenna 10cm – 2dBi Gain | HERKOMYOU

HERKOMYOU 433MHz SMA Male Stub Antenna – 10cm

Upgrade your wireless projects with this compact 433MHz glue stick stub antenna from HERKOMYOU. Measuring just 10cm, it's the perfect retrofit antenna for LoRa modules, RC transmitters, remote sensors, smart home gateways, and other 433MHz devices. The SMA male (or RP-SMA) connector ensures a secure, low-loss connection, while the 50-ohm impedance matches most standard RF circuits right out of the box.

Key Specifications

• Frequency Range: 433MHz (423–440MHz)
• Antenna Gain: 2 dBi
• Impedance: 50 Ohm
• Polarization: Vertical or Horizontal
• Antenna Length: 10cm
• Connector Type: SMA Male / RP-SMA (please verify your device's interface before ordering)
• High-Concern Chemicals: None
• Made in: Mainland China

Why Choose This 433MHz Stub Antenna?

• ✅ Broad Compatibility – Works with LoRa, LoRaWAN, RC remotes, wireless sensors, and other 433MHz devices.
• ✅ Compact 10cm Form Factor – Slim glue-stick design fits neatly into enclosures and DIY builds without adding bulk.
• ✅ 2 dBi Gain – Improves signal range and reception compared to PCB trace or no-antenna setups.
• ✅ Dual Polarization – Mount vertically or horizontally to suit your installation environment.
• ✅ Standard 50-Ohm Impedance – Plug-and-play compatibility with the vast majority of RF front-ends and transceivers.

Typical Applications

• LoRa / LoRaWAN development boards (Raspberry Pi LoRa HAT, Arduino shields, etc.)
• 433MHz RC transmitters and receivers
• Wireless temperature, humidity, and security sensors
• Smart home hubs and IoT gateways
• Amateur radio (ham radio) QRP projects
• Custom PCB antenna retrofits

Important Note on Connector Selection

This antenna is available with either a standard SMA Male or RP-SMA interface. Please double-check the connector type on your device before purchasing to ensure a proper fit. SMA and RP-SMA connectors look similar but are not interchangeable.

Explore More Tools & Accessories

Looking for other precision tools and craft accessories? Check out our Leather Hole Punch Tool | DIY Stitching Punch 4/5/6mm or the Airtight Transparent PET Storage Bottle | Beads & Crafts for handy workshop companions.

Learn more: EPA guidance on lithium-ion battery handling

Frequently Asked Questions

Q: What is the difference between an SMA Male and an RP-SMA connector for a 433MHz antenna?

A: A standard SMA Male connector has a center pin (male) and external threads, while an RP-SMA (Reverse Polarity SMA) connector has a center socket (female) inside the same external thread housing. They are physically similar but electrically incompatible — always match the antenna connector type to your device's port before ordering this 433MHz stub antenna.

Q: What devices is this 433MHz glue stick antenna compatible with?

A: This 10cm 433MHz antenna is compatible with any device operating in the 423–440MHz frequency band with a 50-ohm RF port, including LoRa/LoRaWAN modules, 433MHz RC transmitters and receivers, wireless sensor nodes, IoT gateways, smart home hubs, and amateur radio QRP rigs.

Q: Will the 2 dBi gain improve my wireless range?

A: Yes. A 2 dBi gain antenna provides a modest but meaningful improvement over a bare PCB trace or wire stub antenna. Combined with the antenna's optimized 433MHz resonance, you can expect better signal reliability and slightly extended range in typical open-air and indoor environments.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.