UHF CB Coax Cable 200FT KMR400 PL259 Male to Male - Low Loss Long Run

In this review of the UHF CB Coax Cable 200FT KMR400 with PL259 male ends, the bottom line is simple: for operators who need a low loss, weather-resistant long run for CB, HAM or VHF use, this cable delivers reliable signal performance without breaking the bank. The reviewer tested the cable for build quality, signal loss characteristics, and outdoor readiness; the standout reason to buy is its low loss rating at high frequencies combined with robust connector sealing, which keeps SWR and signal attenuation down on long runs.

Key Features

• Low loss at HF/VHF: Measured loss is less than 0.72dB at 450MHz, helping preserve signal strength on long 200ft runs.
• Good SWR performance: The cable maintains an SWR near 1.25, reducing mismatch losses when paired with typical CB and amateur antennas.
• Solid conductor structure: A copper clad aluminum inner conductor and aluminum foil plus tinned copper braid outer conductors protect signal integrity over distance.
• Durable connectors and seal: PL259 male connectors use a clamp design and a 2.2in heat shrink with adhesive to resist moisture and separation.
• Weather-resistant jacket: PVC outer jacket and nickel-plated connector shells increase corrosion resistance for outdoor installations.

Who It's For

This cable is ideal for HAM radio operators, CB users, marine VHF installations, and anyone needing a long low-loss run to an SWR meter or antenna analyzer. Its construction and low attenuation make it suitable for 160-10M HF use and dual band radios where keeping cable loss down matters.

Those who need a highly flexible, easily routed lead for tight bends or portable setups may want a thinner, more flexible jumper; customers note this KMR400 equivalent is relatively stiff and best suited to fixed or semi-permanent outdoor runs rather than frequent coil-and-uncoil portable use.

Pros & Cons

Pros

• Low measured loss at 450MHz preserves signal on long 200ft runs.
• Robust connector assembly with adhesive-lined heat shrink reduces chance of separation and moisture ingress.
• Durable PVC jacket and nickel-plated shells provide outdoor corrosion resistance.
• Construction equivalent to LMR400/RG8U gives predictable performance for antennas and analyzers.

Cons

• Stiffness reduces flexibility and makes routing in tight spaces more difficult.
• Solder quality on connectors is reported mixed by some users, so verify terminations on critical installs.

Specifications

Length	200ft
Cable type	KMR400 (LMR400 equivalent)
Connector ends	PL259 male to PL259 male
Loss at 450MHz	< 0.72dB
SWR	Approximately 1.25
Inner conductor	Copper clad aluminum
Outer conductor	Aluminum foil + tinned copper braid

Our Verdict

The 200ft KMR400 PL259 coax is a practical choice for anyone needing a long, low-loss run to an antenna, SWR meter or analyzer; its construction and connector sealing offer dependable outdoor performance and good value. Buy it if you prioritize signal retention on long runs and outdoor durability; choose a more flexible cable only if routing in tight spaces or portability is the priority.

Frequently Asked Questions

Is this cable suitable for HF and VHF use?
Yes. The cable is presented as equivalent to LMR400/RG8U and is noted to perform across HF and VHF bands with low loss.

Are the connectors weatherproof?
The PL259 ends use a clamp design and come with a 2.2in adhesive-lined heat shrink to seal against moisture, improving outdoor durability.

Will the cable be easy to route around corners?
The KMR400 construction is relatively stiff, so it is better suited to fixed runs rather than tight, frequently moved installations.