Timeline for Why a thousand miles long antenna is not needed to receive LW and MW?
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Mar 14, 2016 at 2:16 | comment | added | PearsonArtPhoto | Okay, makes sense. | |
| Mar 14, 2016 at 1:26 | comment | added | Phil Frost - W8II | @PearsonArtPhoto What makes coils of wire work has nothing to do with the wire being a wavelength long. Consider that all of the turns are magnetically coupled by virtue of sharing the same (possibly air) core. This high degree of coupling means the current in each turn is essentially equal. This is true however many turns there are, and whether or not the total length of the wire is related to wavelength in any way. | |
| Mar 13, 2016 at 18:26 | comment | added | red-o-alf | The "7 turns of wire to make a coil" described in the linked article, are no way near to a wavelength in MW and LW! | |
| Mar 13, 2016 at 12:56 | comment | added | PearsonArtPhoto | AM antennas typically have coils of wire that have a near wavelength amount of wire in them, such as was designed at ccrane.com/!ZWZH0veEn1U6mfPDHx13MQ!/… | |
| Mar 13, 2016 at 6:41 | comment | added | Autistic | Well signal voltage is down due to extremely low radiation resistance .This low resistance is inconveniant to match efficiently.So less signal and less atmospheric noise. | |
| Mar 13, 2016 at 6:20 | comment | added | red-o-alf | "Electricaly short antennas seem to work fine on RX at these low frequencies ." that's what I said in my question, I asked how. | |
| Mar 11, 2016 at 23:56 | history | answered | Autistic | CC BY-SA 3.0 |