DIY HF Antenna for Car Roof

By SM0VPO

Learn how to build a compact and efficient HF antenna for ham radio operators with limited space. Follow the author's journey from experimenting with different antennas to creating a magnetic-mounted antenna that covers 7MHz to 30MHz without the need for an ATU. Discover how a portable flagpole can be repurposed for radio communication, allowing you to operate with 100 Watts power output. This project provides a cost-effective solution for hams looking to set up a reliable antenna on their car roof in just 30 seconds.

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Antennas/Mobile

The title of the main category is Mobile and it deals mainly with mobile antennas . The link to this resource has been on our site since Monday Jan 12 2026, and it has been followed 10 times. So far no one has rated it yet. Be the first to rate it!
Last updated: 2026-01-12

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