HYS Heavy Duty SO-239 8.8in Triangle Magnetic Mount - Mobile Antenna

In this review the HYS Heavy Duty SO-239 triangle magnet mount is judged on durability and practicality for mobile CB and two-way radio use. It is aimed at users who need a tough, quick-install mount with a long RG58 cable and a reliable SO-239 connection; the single biggest reason to buy is the heavy magnetic base that lets you install an antenna quickly without drilling. The reviewer found it especially useful for temporary or moving installations where a strong magnetic hold and a standard PL-259 plug are required.

Key Features

• SO-239 Connection: Provides a standard threaded SO-239 mount to accept PL-259 terminated antennas and mobile radios for broad compatibility.
• 5m RG58 Cable: The included 5m (16.4ft) RG58 coaxial cable offers flexibility in mounting position and straightforward routing to the radio.
• Triangle Magnetic Base: The 8.8in diameter triangle base is shaped for stable mounting and quick clamp-on installation without hardware.
• Strong Pull Strength: A magnetic base pull strength rated at 66 lbs helps resist tipping and wind load during driving, useful for highway speeds.
• Plug-and-Play: The PL-259 plug and SO-239 socket make setup immediate for most CB and UHF mobile antenna users, reducing install time.
• Sturdy Construction: Build quality resists scratching and holds up under use, which contributes to longer in-field life.

Who It's For

This mount is best for CB operators, two-way radio users and hobbyists who need a fast, non-permanent antenna solution for trucks, cars and other vehicles. It suits those who value a standard SO-239/PL-259 interface and a longer RG58 lead for routing into the cabin.

Those looking for a permanent, through-hole install or who require a heavier gauge coax for minimal loss on very long runs should consider a different mount or cable type; also buyers expecting identical magnet behavior across units should note customer feedback varied on magnet strength.

Pros & Cons

Pros

• Solid build quality that holds up and resists scratches in regular use.
• Convenient 5m RG58 cable and PL-259 plug for easy, plug-and-play hookup.
• Large 8.8in triangle magnetic base with substantial pull strength for secure temporary mounting.
• Standard SO-239 interface fits a wide range of mobile antennas and radios.

Cons

• Magnet strength reports are mixed among users, so individual units may vary in hold depending on vehicle surface and conditions.
• RG58 is adequate for many uses but is only marginally long for some installations; very long runs may need a different coax.

Specifications

Connection Style	SO-239 mount with PL-259 plug
Cable	5m (16.4ft) RG58 coaxial
Base Shape	Triangle magnetic base
Base Diameter	225mm / 8.8in
Magnetic Pull Strength	66 lbs
Compatibility	SL16-MALE, UHF-MALE, PL259 antennas and SO239 mobile radios

Our Verdict

The HYS SO-239 triangle magnetic mount is a practical, value-oriented choice for users who need a fast, non-permanent antenna installation with standard PL-259/SO-239 compatibility. It offers strong build quality and a long RG58 lead for flexible placement; buyers who need guaranteed maximum magnet hold or permanent installs may want alternate mounting solutions.

Frequently Asked Questions

Will this fit my PL-259 antenna?
Yes, the mount uses an SO-239 socket designed to accept PL-259 terminated antennas and compatible mobile radio connectors.

Is the cable long enough for trunk-to-cabin runs?
The included 5m (16.4ft) RG58 cable is long enough for most vehicle installations, but very long or unusual routing may require additional or heavier coax.

How strong is the magnet on real vehicles?
The base is rated at 66 lbs pull strength and holds well in many drives, though some users report variation depending on vehicle surface and conditions.