JEFA Tech Low Loss 240 FLEX Cable Assembly for RFID, 5G, Automation, Remote Sensing, Ham Radio, CB Radio

JEFA Tech® Low Loss 240 FLEX is our most popular cable and strikes the perfect balance for many common applications including RFID, 5G and 4G LTE, Remote Sensing, Ham Radio, and CB Radio. It is ideal when small cable size, low attenuation, durability, and flexibility is important.

As of September 2026, this cable has been upgraded and now features a durable TPE (Thermoplastic Elastomer) jacket for improved flexibility and a 7-strand 100% bare copper center conductor for improved performance.

This is a premium cable assembly backed by a US company you know and can trust.

Features:

• Lightweight, Flexible, and Durable
• 0.242 inch diameter
• Flexible and Durable UV Protected TPE Jacket
• 16 AWG 7-strand 100% Bare Copper Center Conductor
• Double shielding - 95% tinned copper braid, plus 100% aluminum foil shield
• Gas Injected Foamed Polyethylene Dielectric
  

Customizations available, need something more specific?  Contact us!

For RFID Applications:

JEFA Tech Low Loss 240 FLEX is the preferred cable type for RFID and is used by many well-known RFID vendors including IMPINJ, Barcoding, Assetpulse, and others.  It excels in the very common 900MHz UHF "RAIN" RFID band and is the perfect balance of low attenuation, flexibility, and durability.  For RFID, RP-TNC and SMA connectors are common, reach out to us if you need assistance with connector selection.

Attenuation for various cable lengths using the 900Mhz UHF "RAIN" RFID band:
5ft - 0.455dB
10ft - 0.910dB
20ft - 1.82dB
50ft - 4.55dB
100ft - 9.10dB

For Remote Sensing, Control, and Automation:

JEFA Tech Low Loss 240 FLEX is a perfect fit for RF components related to automation, remote sensing, and control.  Connect your automation related RF devices such as cellular, satellite, GPS, and other sensors.  It is durable and UV protected for devices that will be in outdoor harsh environments.

For Ham Radio and CB:

JEFA Tech Low Loss 240 FLEX is a small, light and flexible low loss coax cable which is ideal for HAM Radio HF and VHF portable operation when high performance and small cable size and flexibility is important.  It can also be used as a strain relief jumper inside your shack between your radio/amp and stiff feedline.  Many HAMs use this cable for portable operations as it is easy to pack out, set up, and coil up again when operations have completed.

Attenuation per 100ft of JEFA Tech FLEX cable for popular Ham Bands (lower is better):
40M - 0.8dB
20M - 1.1dB
6M - 2.07dB
2M - 3.62dB
70cm - 6.34dB

QUALITY AND PERFORMANCE: This cable is professionally assembled and tested in our manufacturing facility in Maryland, USA! We stand behind the quality and performance of our cables. Our cables are guaranteed to be of the highest quality and performance or your money back.

PRODUCTION DETAILS: You are purchasing a completed cable assembly with connectors professionally attached to the cable. The ends are soldered and crimped, heat shrink is applied to seal the cable to the connector and provide additional support and the cable is then tested to ensure proper assembly and performance.

We use Agilent N9912A RF Analyzers for cable sweep testing.

SAME DAY SHIPPING: These cables are built-to-order. We have an optimized production line for these assemblies so most orders will ship the same day!

CUSTOM PACKAGING, LABELING, BUNDLING, BARCODING: We can further customize your cable.  Click here for options.

RETURN POLICY:
Since these cables are built-to-order, they are not returnable if you make a mistake when choosing the connector types or length. To see pictures of connectors, please see the connector identifier link at the top of the website. If you need assistance, please contact us.