Webby N4UJW, Hamuniverse.com. Getting on the HF bands for the first time is one of the most exciting times for anyone that holds an Amateur Radio Operator license, especially for the ham operators who are brand new to HF or will soon be getting on HF with the new "HF" privileges using voice on 10 meters and CW privileges on 80, 40, 15, and 10 meters. WebApr 10, 2024 · From these two charts, it can be seen that the optimum NVIS frequency falls between the D-Layer absorption frequency of 4.00 MHz and the foF2 frequency of 10.225 MHz, indicating that the 40-meter amateur band is the optimal band for NVIS communications at 1630 UTC (1030 mountain) on the 29th of October.
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WebAug 12, 2024 · The HF bands are by far the most popular bands in the amateur service. Local contacts and world-wide propagation are all possible at almost anytime with careful … WebFeb 1, 2024 · A rule of thumb for amateur operation is lower HF frequencies are generally better for nighttime contacts, while the frequencies 20M and above are better for daytime communication. marina lanticina
Operating on the Low Bands–160 and 80 Meters
WebApr 7, 2024 · (You can't hear far-away AM radio stations in the daytime because the D layer scatters the radio waves.) There are also the E and F layers, which bounce radio waves. (To say that the waves "bounce" is an … WebStrictly speaking this is VHF, not HF, but it's often included on HF rigs. 10m- This is more consistently opened, especially in times of higher solar … WebDuring the day an HF radio wave can reflect off the E, F 1, or F 2 layers. At night, however, it can reflect only off the high-altitude F layer, creating very long transmission ranges. ... The superhigh frequency to extremely high … marina lareigne