The LONGWAVE MESSAGE BOARD
Re: 2200 m activity


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Posted by John Davis on December 23, 2022 at 20:38:32.

In Reply to: Re: 2200 m activity posted by swlem3 on December 23, 2022 at 19:37:30.

Groundwave propagation in daytime is often under-appreciated at 2200 m. It's always present, at distances of up to four times that of 540 kHz for a given attenuation level, although static covers up weak signals in most months.

At this time of year, however, the vastly reduced QRN allows even as little as 1 W EIRP to reach hundreds of miles effectively.

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