Timeline for Utility pit MW/LW omnidirectional antenna
Current License: CC BY-SA 3.0
4 events
| when toggle format | what | by | license | comment | |
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| Nov 28, 2016 at 12:24 | comment | added | Phil Frost - W8II | I don't think the shielding is quite as dire as you say, a low NF at HF is easily realized for less than $5 in parts, and the Q of the antenna does not make it much more directional than a dipole. Compare the radiation patterns of an infinitesimal Hertzian dipole to a half-wave dipole: they are nearly the same. | |
| Nov 28, 2016 at 9:15 | comment | added | user1211 | In fact we have tested a consumer AM radio in a few pits under a lid and it works fine. We could have been lucky I suppose, but as far as I am aware we aren't near any transmitters. We are UK based, as you guessed. The received signal does not need to be great, even listenable, in fact we can handle <5% SNR quite easily. | |
| Nov 24, 2016 at 23:46 | history | edited | Marcus Müller | CC BY-SA 3.0 |
added 1183 characters in body
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| Nov 24, 2016 at 23:14 | history | answered | Marcus Müller | CC BY-SA 3.0 |