Check out the sunspots!

Just before the 4th of July, several sunspot regions rotated into view. Today, they are significant players in elevating the solar output of Extreme Ultraviolet energy — the energy helpful in ionizing the F-region of our Earth’s ionosphere. That, in turn, means better propagation conditions, even on higher shortwave frequencies.

SDO HMI Intensitygram 2014-July-05

As seen by the Solar Dynamics Observatory, the Sun is sporting quite a few sunspots, today. These are helping elevate the 10.7-cm flux, which is a proxy for solar output that strengthens the ionospheric propagation of higher frequencies in the shortwave spectrum. Expect good conditions on HF, this weekend.

73 and best DX!

Tomas Hood, NW7US, is a regular contributor to AmateurRadio.com and writes from Nebraska, USA. Tomas is the Space Weather and Radio Propagation Contributing Editor to 'CQ Amateur Radio Magazine', 'The Spectrum Monitor', and 'RadioUser UK Magazine'.

2 Responses to “Check out the sunspots!”

  • Peter kg5wy:

    Well, I hope things improve, because my reception/propagation has been bad in Texas.

  • Scott, W9MBL:

    This weekend was a marked improvement in the 10m band for me in Wisconsin. I’m new to the hobby (March, 2014), so I had only one 10m contact prior to this weekend. I’ve added 11 since Friday, so I hope it continues — at least for a few more days so I can make contact with two more 10-10 members for my application! 😉

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