Procomm PC-GPK1

The ProComm PC-GPK1 is a ground plane kit for CB radio base station antennas, specifically designed to improve their performance. It works by adding radials (ground elements) to the antenna system.
Key Features and Specifications
Function: The kit improves antenna performance (by approximately 30%, according to some sources) and helps to decrease the angle of radiation, which allows the antenna signal to reach farther.
Compatibility: It is designed for use with specific ProComm base station antennas, such as the ProComm PT99 Plus and the Solarcon A-99 (also known as Antron 99).
Components: The kit includes four internally wound fiberglass radials and an aluminum mounting hub.
Materials: It is constructed from durable, high-grade materials including fiberglass and aluminum.
Radial Length: The radials are typically 4 feet (112 cm) long, though some product descriptions mention 6-foot radials.
Installation: It installs at the base of compatible ProComm base station antennas for effortless integration.
Design: The radials have an inclination to enhance performance.
User Reviews
Users generally report a noticeable improvement in their output signal and reception after installing the ground plane kit.
Reviewers often mention its good value and quality construction.
One user reported making successful long-distance contacts from Costa Rica to Alabama after using the kit with a PT-12 antenna.
A user review on eBay mentioned a potential fit issue with their specific A99 antenna, advising others to read the product details carefully before purchase.
The product is known for its durability and weather resistance, thanks to its rugged construction.