Timeline for Why can't VHF / UHF be used with ionosphere reflection?
Current License: CC BY-SA 3.0
7 events
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| Nov 30, 2017 at 20:40 | comment | added | AG5CI | @SDsolar - "plasma frequency" is a term from electromagnetics. It refers to a parameter (that depends on ionization density) used to describe how the permittivity of an ionized medium varies with frequency. You're right, though - it's not a term that appears much among hams. It's equivalent to critical frequency. I tried to bridge the gap a little with my answer. | |
| Nov 29, 2017 at 1:50 | comment | added | SDsolar | Daniel, welcome to Amateaur Radio Stack Exchange. For this answer please allow me to suggest that to make it clear to us mere mortals, you might want to talk in terms of MUF instead of Wpe or wpe. MUF for Maximum Usable Frequency: en.wikipedia.org/wiki/Maximum_usable_frequency - Also, use of the words "plasma frequency" is confusing. The plasma itself doesn't have a frequency so much as an ionization density as explained here by NASA: ccmc.gsfc.nasa.gov/RoR_WWW/SWREDI/2017/… | |
| Nov 28, 2017 at 20:36 | comment | added | Mike Waters | This is unclear. Can you please explain "plasma" and "WPE", and provide a reference? | |
| S Nov 28, 2017 at 12:56 | review | Low quality posts | |||
| Nov 29, 2017 at 16:43 | |||||
| S Nov 28, 2017 at 12:56 | review | Late answers | |||
| Nov 29, 2017 at 12:20 | |||||
| Nov 28, 2017 at 12:41 | review | First posts | |||
| Nov 29, 2017 at 1:54 | |||||
| Nov 28, 2017 at 12:38 | history | answered | Daniel Atnafu | CC BY-SA 3.0 |