GEMEK 15ft SMA extension cable connector close-up for secure modem connections
GEMEK SMA male to female ends show easy, snug adapter for routers
GEMEK 15ft cable double shield close-up highlighting low-loss construction
GEMEK 15ft label shows 50-ohm impedance for compatibility
GEMEK 15ft flexible bend test demonstrates ease of routing
GEMEK extension connected to modem/router in real-world setup
GEMEK 15ft cable jacket highlights abrasion resistance
GEMEK installation scenario with extension cable for antenna setup
GEMEK packaging shows included cable and full specifications

GEMEK

GEMEK 15ft SMA Extension Cable — Low-Loss 50 Ohm Coax for 4G LTE Routers & SDR

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$28.93

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Product details

Extend with Confidence: GEMEK 15ft SMA Extension Cable

The GEMEK 15ft SMA extension cable delivers a balanced blend of performance and practicality. Built around a double-shielded KMR240 copper core, this 5-meter, 50 ohm coax minimizes loss over longer runs while maintaining flexible routing. The PE jacket adds durability for real-world use, and the connectors are gold-plated for reliable mating across devices. This is an SMA male to SMA female setup, not RP-SMA, and it should not be used with 75-ohm TV devices. Operating temperatures range from -40°C to +85°C, so it stays versatile in diverse environments.

Why This Cable Stands Out

  • Double shielding helps reduce external interference, helping your signal stay focused between your modem, router, or external antenna.
  • Pure copper KMR240 conductor supports better signal retention across longer runs with a compact, flexible form.
  • 50 ohm impedance matches common radio and data equipment, aiding compatibility and performance.
  • Five-meter length offers flexible placement while keeping the assembly manageable and unobtrusive.

Practical Uses and Real-Life Scenarios

Route your signal from a modem, router, or WiFi booster to a fixed antenna or SDR receiver placed farther away. The 90-degree bends can be made in tight spaces, helping you fit the cable through panels, dashboards, or cabinets without compromising the connection. The combination of copper core, shielding, and durable jacket makes it suitable for installations that require a reliable, low-loss link in challenging environments.

Key Specifications at a Glance

  • Length: 15 feet (5 meters)
  • Impedance: 50 ohm
  • Coax: KMR240, 0.240 inch diameter
  • Connectors: SMA Male to SMA Female, 50 ohm
  • Operating temperature: -40°C to +85°C
  • Bend capability: 90-degree bends in one inch or less without loss
  • Jacket: Abrasion-resistant PE jacket for tough environments
  • Not for 75-ohm TV devices; Not RP-SMA

What’s in the Box

Package includes 1 x SMA Male to SMA Female Low Loss Coaxial Cable (5 meters) as pictured.

FAQ

Q: What devices is this GEMEK SMA extension cable compatible with?

A: It works with SMA-based modems, routers, WiFi boosters, antennas, and receivers; SMA male to female, not RP-SMA.

Q: Are there any usage limitations I should know about?

A: Use with 50-ohm systems; avoid 75-ohm TV devices; follow bend radius guidelines to preserve performance.

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