Cdsenet TX2400-JK-11 2.4GHz WiFi Antenna 2.5dBi SMA-J TPEE 110mm IoT Rubber Antenna Omnidirectional Antenna

TPEE Flexible Radome — Impact-Resistant for Industrial Vibration Environments

The TPEE (Thermoplastic Polyester Elastomer) radome provides superior toughness and elasticity compared to standard rubber compounds, allowing the antenna to withstand repeated bending and industrial vibrations without cracking or performance degradation. TPEE maintains its mechanical properties across the full -40°C to +85°C operating range and is UV-stable for protected outdoor installations. The flexibility allows the antenna to be bent to various angles for space-constrained mounting on IoT modules and industrial terminals.

Nickel-Plated Copper SMA-J with Gold-Plated Pin — Low-Loss 50Ω Interface

The precision-machined nickel-plated copper SMA-J (male, inner pin) connector with gold-plated contact pin provides a corrosion-resistant, low-loss 50Ω interface to SMA-K female ports on 2.4GHz wireless modules, IoT gateways, and industrial terminals. Gold plating on the contact pin minimizes contact resistance and prevents oxidation over repeated mating cycles. The connector is rated for 50W maximum input power, accommodating the full output range of 2.4GHz wireless equipment.

Measured with Agilent E5071C vector network analyzer: VSWR = 1.15 @ 2.4 GHz, confirming ≤1.5 across the full 2.4–2.52 GHz operating band. Return loss ≈ 23 dB at center frequency — indicating less than 0.5% of input power is reflected at the antenna port.

Q: What is the difference between the TX2400-JK-11 and TX2400-JKD-20?

A: Both antennas use TPEE radomes and SMA-J connectors for 2.4GHz applications, but differ in gain and size. The TX2400-JK-11 delivers 2.5 dBi with a compact form factor and VSWR of 1.15 at 2.4GHz — optimized for direct-mount on IoT modules and compact devices. The TX2400-JKD-20 delivers 5.0 dBi with a 200mm radiator for extended range on routers and APs. Choose JK-11 for compact IoT module mounting; choose JKD-20 for maximum range on routers and access points.

Q: Which 2.4GHz protocols does the TX2400-JK-11 support?

A: The 2.4–2.52GHz frequency range covers WiFi 802.11b/g/n (2.412–2.484GHz), Bluetooth Classic and BLE 5.x (2.402–2.480GHz), ZigBee 3.0 (2.405–2.480GHz), Thread, Matter, and proprietary 2.4GHz FSK/GFSK protocols. It is compatible with any 2.4GHz wireless module or SoC with an SMA-K (female) antenna port, including ESP32, nRF52840, CC2652, and Ebyte E18/E72 series modules.

Q: Is the TX2400-JK-11 compatible with RP-SMA ports on consumer WiFi routers?

A: No. The TX2400-JK-11 uses an SMA-J (standard SMA male) connector, which is not compatible with RP-SMA (Reverse Polarity SMA) ports commonly found on consumer WiFi routers. RP-SMA reverses the pin/socket arrangement — the router port has an inner pin, while SMA-J also has an inner pin, making them mechanically similar but electrically incompatible. For RP-SMA router ports, use an RP-SMA male antenna or an SMA-to-RP-SMA adapter.

Q: Does bending the TPEE antenna affect RF performance?

A: Yes. The VSWR specification of ≤1.5 is measured with the antenna in a straight vertical position. Bending alters the radiation pattern — a bent antenna no longer radiates in a purely omnidirectional pattern. The TPEE material allows bending without mechanical damage, but for applications requiring consistent omnidirectional coverage, mount the antenna vertically. Use the bend capability only for space-constrained installations where pattern symmetry is less critical.

Q: What is the operating temperature range and is it suitable for outdoor use?

A: The TX2400-JK-11 is rated for -40°C to +85°C. The TPEE radome is UV-stable and weather-resistant, suitable for protected outdoor installations such as industrial cabinets and outdoor IoT enclosures. For direct rain exposure, protect the SMA connector junction with self-amalgamating tape. TPEE provides better crack resistance than standard rubber under repeated temperature cycling and UV exposure.