C-Pole Antenna Projects for Amateur Radio Operators
Find C-Pole antenna designs and construction guides for portable and ground-independent vertical setups.
The C-Pole antenna is a popular design for ham radio operators seeking a compact, ground-independent vertical antenna. This folded half-wave dipole configuration eliminates the need for a complex radial system, making it an excellent choice for portable operations, QRP expeditions, and situations where space is limited. Its design allows for efficient operation across various HF bands, providing a good balance of performance and ease of deployment.
Operators often build C-Poles for specific bands like 20m or 40m, with many projects focusing on lightweight, portable versions. Resources in this category provide construction details for single-band C-Poles, often highlighting their use in field comparisons against other wire antennas like EFHW verticals. There are also discussions on optimizing performance, including the use of choke baluns for phased C-Pole arrays to maintain proper phasing and beam patterns for DX work.
-
On the field comparison among C-Pole antenna, an EFHW vertical antenna and an Inverter V dipole antenna. Test is done using two identical WSPRLite beacons that transmit with 200mW on the WSPR frequency and analyzing spotted results. -
A vertical monoband that's small, light and portable, needs no counterpoise and performs as well as a home antenna -
C-Poles for 20m and 6m, it is a folded half-wave dipole with an asymmetrical tapped 50-Ohm-point in the lower part of the antenna. Design hints by DK7ZB -
For phased C-Poles, matching choke baluns are essential to maintain intended phasing, beam pattern, and gain. The author uses a low-loss, ferrite-core balun design with 19 turns of RG-174/U coax for optimal performance. -
A C-Pole Antenna for QRPxpeditions describes a DIY C-Pole antenna designed for QRP (low-power) expeditions, inspired by KF2YN’s ground-independent vertical model. After adjustments, it achieved a 1:1 SWR at 14.060 MHz, rising to 2.5:1 at 14.35 MHz. A choke balun, comprising 15 turns of RG8X around a 4” can, was essential for optimal performance. Compact and self-supporting, the antenna enables reliable communication with minimal setup. Contacts included stations across the U.S., and even a 4,600-mile connection to Spain using only 5 watts. -
The article details the C-Pole antenna project, emphasizing its portability and ease of setup for amateur radio operators. Key features include its compact design as a vertical half-wave dipole that requires no radials, making it functional at various locations. The antenna employs capacitive loading to reduce physical length while maintaining efficiency. It includes practical advice on resonance tuning, impedance matching, and construction materials, along with a calculator for determining dimensions based on desired frequencies. Overall, it presents a user-friendly solution for portable ham radio communication. -
This article presents the C-Pole antenna project, a compact, ground-independent vertical antenna designed for amateur radio operators. It features a folded half-wave dipole configuration that eliminates the need for radials, making it suitable for various locations, especially in deed-restricted areas. The C-Pole offers efficient performance with a 2:1 SWR bandwidth of approximately 3%, and it can be easily constructed using common materials. Additionally, the article discusses practical aspects such as feed-point impedance transformation and balun design to optimize functionality and minimize losses.