CobWebb Antenna Projects and Building Resources
Find plans and guides for building compact, multiband HF CobWebb antennas for various amateur radio bands.
The CobWebb antenna is a popular choice for hams needing a compact, multiband HF solution. Its design allows operators to work multiple bands, typically from 20 to 10 meters, with a relatively small footprint, making it ideal for limited space or portable operations. This antenna type provides near-omnidirectional coverage, which is very useful for general operating and chasing DX without needing a rotator.
Many operators enjoy building their own CobWebb antennas, often following detailed DIY guides and construction plans. Resources here include discussions on design variations, such as the G3TPW or G3TXQ versions, and practical tips for homebrewing. Hams can find part lists, assembly instructions, and insights into optimizing performance for different bands, ensuring their stations are ready for QSOs.
-
The CobWebb antenna project is a compact, multiband HF solution ideal for amateur radio operators. Covering 14-28 MHz, it features a square dipole array with near-omnidirectional coverage and unity gain. This guide details a DIY approach, using a 1:4 current balun for impedance matching. Construction involves aluminum and fiberglass tubing, with optimized element tuning for SWR performance. Weather resistance improvements and resonance shift considerations are also discussed. Build your own CobWebb antenna for an efficient, space-saving HF experience. -
Concentric Open Loop Antenna Fed Off-Centre similar to the cobwebb antenna but resonating on 20-17-15-10 meters band -
Amateur Radio G3TXQ Cobweb Antenna a 5 band antenna that can be quickly assembled. -
Build your own cobweb antenna followning M0MRR instructions and notes -
The cobweb antenna it is basically a 5 band antenna comprising of 5 full half wave dipoles for each band - between 10 meters and 20 meters, the antenna is also resonant on 6M and can be modeled even for VHF frequencies. -
A 27 pages pdf file revealing secrets of the cobwebb or cobweb multiband antenna with many pictures and assembling details. A great document that can guide you in making your own cobweb aerial. -
A 5-band (20m-10m) HF antenna - Just 7ft square and great for a small garden. Build it yourself for around 60 GBP. -
The G3TPW Cobwebb antenna covers five bands, 14 - 28 mhz, including the WARC bands -
Discussion on cobwebb experiences on towertalk mailing list -
Homebrew a cobwebb antenna for the HF bands. This page describe a cobwebb multiband antenna resonating on 14 18 21 24 and 28 MHz. The cobweb antenna model can be considered a fan dipole, or better, multiple dipoles fed in parallel. -
A home made cobweb antenna project made with easy to find parts 2-14 AWG speaker cables which are cut to 1/2 wavelength for each band and junction box with 4:1 Balun -
A DIY guide to build your own compact multiband HF antenna based on the G3TXQ version using a 1:4 balun. This article includes the full part list and instructions to assembly, including the center plate. -
Useful tips on building cobweb antennas. Since I've done so many posts on the Cobweb antennas I thought it best to separate them on a different page so that potential Cobweb builders can see all the posts together. Hopefully this will make planning and building easier.