The K8NGP is a specialized coaxial cable designed exclusively for no-ground-plane (NGP) antennas. It will not work with standard ground-plane-dependent CB antennas.
In NGP systems, only the center conductor of the coax feeds the antenna. The coax shield is used to form the ground plane required by all transmitting antennas.
Because the K8NGP coax includes a tuned circuit, shortening the cable by as little as 1/4" can make it unusable. In rare cases where trimming is unavoidable, it must be done with care and an understanding of how cable length affects the resonant frequency of the system.
FireStik single-lead cable assemblies are built from our Fire-Flex RG-58A/U coaxial cable and are intended for single-antenna installations, including CB, scanner, 2-meter, and 10-meter setups.
Features include:
17-foot cable length
Stranded center conductor for maximum flexibility and reduced risk of breakage
Shielding coverage averaging 95% to prevent RF leaks and interference
Polyvinyl center insulation for durability and long life
Performance exceeding mil-spec requirements for 50-ohm RG-58A/U coax
100% foil shielding to stop signal leakage
95% braided copper shield over the foil for double protection
Overall performance superior to comparable products
These assemblies use the same premium coax as FireStik’s mobile cable assemblies. One end is terminated with a PL-259 connector, and the other end is finished with a no-ground-plane assembly (K-8 shown). This coax is suitable for your no-ground-plane system.
Always match your system components: use NGP coax with NGP antennas, and ensure you have an NGP antenna for any NGP installation.
Mixing NGP coax with a traditional antenna (or using standard coax with an NGP antenna) will result in high SWR issues.
+){kind=link}