This is a premium 6-inch coaxial extension cable made with high-shielding RG402 semi-rigid coax and terminated with RP-SMA male to N-female bulkhead connectors. Designed for ultra-low signal loss and high-frequency stability, this cable is ideal for WiFi, LoRa, and general RF applications up to 18 GHz.

Common Uses:

Extend RP-SMA WiFi antennas to outdoor N-type antennas
Connect LoRa/Meshtastic devices to N-female base station antennas
Use with routers, access points, and wireless bridge systems
Compatible with Helium miners using RP-SMA ports and outdoor N-male antennas

Connector Note:
RP-SMA (Reverse Polarity SMA) is most commonly found on WiFi gear like routers and USB adapters. If you're unsure whether you need SMA or RP-SMA, please check the center pin on your device port and contact us for support.

Key Specs:

Cable Type: RG402 (0.141" Semi-Rigid)
Connectors: RP-SMA Male to N-Female Bulkhead
Impedance: 50 ± 2 Ohms
Dielectric: Solid PTFE
Outer Conductor: Silver-Coated Copper
Frequency Range: DC to 18 GHz
Shielding Effectiveness: >100 dB
Max Operating Voltage: 2000 Vrms
Length: 6 inches (15.24 cm)

Estimated Signal Loss (at 6 inches):

906 MHz: ~0.13 dB
2.4 GHz (WiFi): ~0.26 dB
5.8 GHz (WiFi): ~0.39 dB
6 GHz: ~0.5 dB
10 GHz: ~0.72 dB
18 GHz: ~1.04 dB

We do recommend RokTape to seal all outdoor connection points.

Warranty & Support:
Complimentary Telephone and Email/Live Chat Support (Click Here)

Sales tax is required in many states and will be added at checkout if applicable to your delivery state. Tax exempt forms can be sent to our support department.

Return Policy: Coaxial cable may be returned for refund if new within 30 days of delivery. Used coaxial cable cannot be returned except in case of defect. We only cover return shipping in case of wrong item shipped. Returned orders with free shipping selected will incur a 15% recovery fee to help us recover some of the original shipping cost, unless the item is defective or incorrect. Expedited shipping charges paid are non-refundable. For bulk purchases, see our bulk purchase return policy here.

ALL HELIUM ACCESSORIES minus antennas

RP-SMA male to N-Female 1-pack flat window coaxial extension pigtail

RP-SMA male to N-Male 1-pack flat window coaxial extension pigtail 18 inch length

RP-SMA male to RP-SMA female 1-pack flat window coaxial extension pigtail 8 inch length

6" Inch RP-SMA male to N-Female Bulkhead coaxial extension RG402