100 watt 7 MHz magnetic loop for units and apartments.

 Here's another interesting antenna project for radio amateurs living in deed-restricted housing.

In this video, Peter Parker (VK3YE) shows us how build and use a 100 watt 7 MHz Magnetic Loop Antenna designed for "units and apartments."

This simple HF antenna uses commonly available parts and does not require an expensive variable capacitor.  This antenna can be used at your home station or in the field for POTA/SOTA operations.

If you can't see the video, please insert this title URL into your browser search box:  https://www.youtube.com/watch?v=Cv_RnLpZ9gw

Thanks for joining us today.

Russ (KH6JRM/AL0HA).

Here are a few comments from Peter (VK3YE):

A description and demonstration of an ultra-simple but 100 watt capability 7 MHz magnetic transmitting loop for units and apartments. There are no hard to get parts or complex workshop skills required to build. Instead of the expensive vacuum variable capacitor, the loop is brought to resonance with a length of RG213 coax (approx 1.85 metres for a 3m circumference loop for 7 MHz). The sliding capacitor's dimensions are not critical but are approximately 6 x 8 cm. As demonstrated performance is excellent and would be significantly better than lighter and more portable loops. It would thus make an excellent project for apartment or unit dwellers who have limited room for other HF antennas. CAUTION: Hazardous high voltages can develop across the capacitor on transmit with this (or any other) magnetic loop. Hence the loop should be operated in an out of reach location. For the same reason the loop should not be adjusted with RF applied even if only QRP. Contents 0:00 Introduction 1:10 Heavier duty loop 2:42 Coax cable capacitor 3:29 Fine adjustment capacitor 4:46 Coupling loop 5:15 Loop bandwidth 5:43 On air demonstration 7:36 Summary A full article on this loop appears in November 2014 Amateur Radio magazine. Also some notes at https://vk3ye.com/projects/projloop.htm Don't want to build your own loop or want more bands? Consider this commercial equivalent. https://ebay.us/fDSgt5 (Note: I receive a small commission on sales - no extra cost to you) PS: If you liked this video please consider supporting Amateur Radio VK3YE by:

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