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Ahoj,
na TV příjem se nyní prodávají tyto antény.
Netušíte, co je uvnitř?
Má velmi podezřelé parametry: všesměrová, 47–790 MHz o zesilovači raději nic.
Jirka (GeBu)
GeBu
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Apr 14, 2023, 1:54:56 PM4/14/23
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pá 14. 4. 2023 v 21:43 odesílatel GeBu <geb...@gmail.com> napsal:
Jindrich Fucik
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Apr 15, 2023, 3:58:02 AM4/15/23
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to GSM conference at Silicon Hill
To zase špatně čteš reklamštinu. To pásmo je zajisté hraniční pásmo
vestavěného zesilovače, před magickou filtrací 4G/LTE a tak.
Dne 14.04.2023 v 21:43 GeBu napsal(a):
Petr Sedlacek
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Apr 15, 2023, 7:35:56 AM4/15/23
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Tak tak, tezko bude mit jednoducha antena pasmo 4 oktavy (teda logaritmicko-periodicka by mohla, ale to nebude tenhle pripad). Pokud to tedy neudavaji s utlumem -60 dB a SWR <100 :))
Petr, kdysi (a zase snad brzy) OK1THA
GeBu
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Apr 15, 2023, 12:05:08 PM4/15/23
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Jasně, o tom nepochybuji.
Ona původní otázka byla, co by mohlo být vevnitř - ten tvar mne překvapil.
Pokud vím, tak žádné parametry neudávají.
Jirka (GeBu)
so 15. 4. 2023 v 13:35 odesílatel Petr Sedlacek <pe...@sedlacek.biz> napsal:
GeBu
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Apr 17, 2023, 3:10:45 AM4/17/23
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Uvnitř jsou 4 antény:
* 3x páskový dipól do oblouku po kraji antény na tři směry - pro TV,
* 1x drátový dipól opět do oblouku - pro rozhlas.
a zesilovač.