Friday, November 16, 2018

472 kHz WSPR TX/RX with earth electrodes. Post 1680.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=m_2WMbDjoAw.

Antennas for the 630 meter amateur radio band (472 kHz-479 kHz) can be large and difficult to fit into an urban lot.  Would you be willing to use this band if a "reasonably small antenna" could be designed and built for this band?

Roger (G3XBM) has been doing experiments with "earth electrodes" at his QTH--his results have been impressive for the small amount of power he's using (around 10mW).  According to Roger, his antenna system consists of 2 ground rods placed 20 meters/65.6 feet apart, with the ground connected to the PA by a wire running about 1.5 meters/4.92 feet above ground along a fence.  Despite the constraints and limited size of this "earth electrode" antenna, the system seems to work, even at low power levels.  A fascinating idea worth trying.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM)

No comments:

Post a Comment

Thank you for visiting my Amateur Radio Blog. I value your comments and suggestions. For Amateur Radio Antenna Topics and Discussions, stay here. For Amateur Radio News and Trends, please visit my news site at https://bigislandarrlnews.com.
Aloha es 73 de Russ (KH6JRM).