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40-foot RG400 coaxial cable with silver-plated copper double braid shielding

Alphacool

Alphacool RG400 M17/128 Double Braid Coaxial Cable 40FT

SKU CH-5T04-4AJYY

A 40‑foot RG400 coaxial cable with silver‑plated double braid shielding, 50‑ohm impedance and low loss up to 12400 MHz

  • Low-loss signal up to 12400 MHz with 0.144 dB/m at 100 MHz
  • Phase-stable 50 ohm impedance maintained by PTFE dielectric at 70 % velocity
  • Superior shielding from silver-plated copper double braid for clean RF transmission
  • 40 ft length with 25 mm minimum bend radius for flexible routing
  • 1900 V RMS rating handles high-voltage RF applications safely

RG400 Coaxial Cable 40 Feet

This 12.2 metre RG400 M17/128 coaxial cable provides a 50 ohm transmission line for RF applications. The silver-plated copper inner conductor and PTFE insulator deliver low loss and phase stability up to 12400 MHz. A silver-plated copper double braid shield ensures superior shielding performance.

Installers needing 50 ohm RF links

The cable suits installers who require a 50 ohm characteristic impedance for RF runs up to 12400 MHz. The 25 mm minimum bend radius allows routing in tight spaces. Buyers who need a different characteristic impedance or a higher voltage rating than 1900 V RMS should look elsewhere.

Attenuation at 1000 MHz

At 1000 MHz the nominal attenuation is 0.482 dB per metre, a figure that determines whether the cable meets your link budget over 12.2 metres. Lower frequencies show less loss while 5000 MHz and 11000 MHz exhibit 1.184 dB/m and 1.899 dB/m respectively.

How it compares

Measured against everything we stock in 2-in-1 Device Accessories, at today’s prices. Recalculated every night.

Price $82.99
Pricier than about 68% of the 7,473 comparable items (median $56.99).

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Specifications

No published specifications for this item yet.

Questions about this item

How often will the silver-plated copper double braid shielding need replacement?

The double braid shield is a permanent part of the cable construction and does not require scheduled replacement.

At what frequency does attenuation reach 1.899 dB per metre?

Attenuation reaches 1.899 dB/m at 11000 MHz, the highest specified operating frequency.

How much heat does the cable generate when running continuously at 12400 MHz?

The cable is passive and generates no measurable heat; its PTFE insulator and silver-plated conductors handle the rated voltage of 1900 VMS without active cooling.

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