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Proxicast Ultra Flexible PL259 Male - SO239 Female Low Loss Coax Extension Cable for CB / UHF / VHF / Shortwave / HAM / Amateur Radio Equipment and Antennas - 50 Ohm

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Length6 ft

Key Features

  • PL-259 MALE & SO-239 FEMALE UHF CONNECTORS: Gold Plated Brass Pins - Nickel Plated Body - Heat Shrink
  • THIN & FLEXIBLE: UltraFlex 240 coaxial cable bends easily in tight quarters - Min Bend Radius = 0.75 inch
  • LOW LOSS: 20% Higher VHF Performance than RG8X; 36% Higher than RG58 - Lowest Signal Loss of any Flexible 240 Coax
  • THE PERFECT PATCH CORD for your Antenna, Analyzer, Tuner, Switch, Monitor, Scanner or SWR/Power Meter
  • QUALITY: Proxicast Cable Assemblies are Manufactured and 100% Tested in our ISO 9001 Compliant Factory


Say goodbye to stiff interconnect cables and big loops of coax sticking out of your rig. Easily fit cables into tight spots and route them around corners.

Use this PL-259-to-SO-239 jumper to extend SO-239 jacks on antennas, transmitters, meters, scanners, duplexers or other radio equipment.

Proxicast's UltraFlex-240 has stranded solid copper signal conductors, a flexible aluminum inner shield, a braided outer shield and a soft thermoplastic elastomer (TPE) jacket giving the cable unmatched flexibility. With a minimum bend radius of only 3/4-ths of an inch, UltraFlex-240 cables can go where you want them - not just where the cable wants to go!

UltraFlex-240's 19 strand copper core and double shielded construction deliver the lowest loss of any flexible cable available and increase RF shielding by 50 dB more than typical single-shielded coax. The TPE jacket provides excellent weather resistance for indoor or outdoor applications.

UltraFlex-240 jumpers will be your new favorite coax interconnect.

Proxicast’s cable assemblies are made to exacting standards with the highest quality components and 100% tested in our ISO 9001 compliant facilities.

See the Specification Sheet on the Documentation tab for complete details.

Outdoor connections must be weather-proofed. Use Proxicast’s Self-Bonding Silicone Tape (part# ANT-900-002) for fast and easy connection sealing with no messy residue.

ANT-141-034 Specifications
Connector 1 PL-259 Male
Connector 2 SO-239 Female
Length 6 or 12 ft
Coax Low-loss UltraFlex-240 (0.24 in dia) - Black
Min. Bend Radius 0.75 in
Impedance 50 Ohm
Max VSWR < 1.3 (0 - 3000 MHz)
Max Insertion Loss

6 ft: 0.1 dB @ 30 MHz; 1.2 dB @ 3000 MHz

12 ft: 0.2 dB @ 30 MHz; 2.2 dB @ 3000 MHz

Outdoor Rated Yes
Operating Temperature -40C to +85C (-40F to +185F)

SKU: ANT-141-034

UPC: 617237751652