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<div class="moz-cite-prefix">Zdravím,</div>
<div class="moz-cite-prefix"><br>
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<div class="moz-cite-prefix">tak vždycky je možné k problému
přistoupit stylem "Když odprásknu TinySA, nic se neděje a koupím
nové TinySA".</div>
<div class="moz-cite-prefix">Není to zrovna ekologické, ale pokud
ten spektrák nestojí 1.500.000 ale 1.500 tak se to dá... :)</div>
<div class="moz-cite-prefix"><br>
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<div class="moz-cite-prefix">Zdraví PavelK</div>
<div class="moz-cite-prefix"><br>
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<div class="moz-cite-prefix">Dne 05.03.2025 v 13:22
<a class="moz-txt-link-abbreviated" href="mailto:vladimir@hkfree.org">vladimir@hkfree.org</a> napsal(a):<br>
</div>
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cite="mid:000001db8dc9$33ae5e90$9b0b1bb0$@hkfree.org">
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<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US">To
je dražší, než to Tiny SA </span><span
style="font-size:11.0pt;font-family:"Segoe UI Emoji",sans-serif;mso-fareast-language:EN-US">😊</span><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US">Vladimír<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif">
Hw-list <a class="moz-txt-link-rfc2396E" href="mailto:hw-list-bounces@list.hw.cz"><hw-list-bounces@list.hw.cz></a> <b>On Behalf
Of </b>Jaroslav Meduna<br>
<b>Sent:</b> Wednesday, March 5, 2025 10:42 AM<br>
<b>To:</b> 'HW-news' <a class="moz-txt-link-rfc2396E" href="mailto:hw-list@list.hw.cz"><hw-list@list.hw.cz></a><br>
<b>Subject:</b> RE: Jak ochránit VF vstup?<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-GB"
style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US"><a
href="https://www.minicircuits.com/WebStore/Limiters.html"
moz-do-not-send="true" class="moz-txt-link-freetext">https://www.minicircuits.com/WebStore/Limiters.html</a><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"
style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"
style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US">napriklad
na Mouser:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"
style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US"><a
href="https://cz.mouser.com/ProductDetail/Mini-Circuits/VLM-63-2W-S%2b?qs=hWgE7mdIu5SsPTT3lqlQ7Q%3D%3D"
moz-do-not-send="true">VLM-63-2W-S+ Mini-Circuits | Mouser
Česká Republika</a><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"
style="font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<div
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<p class="MsoNormal"><b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif">
Hw-list <<a href="mailto:hw-list-bounces@list.hw.cz"
moz-do-not-send="true" class="moz-txt-link-freetext">hw-list-bounces@list.hw.cz</a>>
<b>On Behalf Of </b>Vláďa Anděl<br>
<b>Sent:</b> Wednesday, March 5, 2025 10:07 AM<br>
<b>To:</b> konfera <<a
href="mailto:hw-list@list.hw.cz"
moz-do-not-send="true" class="moz-txt-link-freetext">hw-list@list.hw.cz</a>><br>
<b>Subject:</b> Jak ochránit VF vstup?<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p><span lang="EN-GB"
style="font-family:"Times New Roman",serif">Z Ali
mi přišel tiny spectrum analyzer. Je to opravdu malinká
krabička a abych na tom displeji něco přečet, musím si brát
lepší brýle :-) Nejdřív jsem nadával, že to má spoustu
funkcí a není k tomu návod, ale pak jsem kouknul na jejich
web a všechno tam je. </span><span lang="EN-GB"><o:p></o:p></span></p>
<p><span lang="EN-GB"
style="font-family:"Times New Roman",serif">V
návodu píšou, že vstup (100 KHz až 1,5 GHz) snese max. 10dBm
a stejnosměrných 10V. Je k tomu prutová anténa a u ní píšou
dávat si velký pozor a o nic s tím neškrtnout. Čím se dá
takový vstup ochránit? Dvě diody proti sobě, ale jaké? Snad
všechny hodně rychlé diody jsou schottky a tady bych
potřeboval, aby ta dioda do půl voltu pokud možno nevedla.
Dvě ledky proti sobě? Ale ty asi budou mít velkou kapacitu.
Nebo připojit na vstup třeba tenhle zesilovač </span><span
lang="EN-GB"><o:p></o:p></span></p>
<p><span lang="EN-GB"
style="font-family:"Times New Roman",serif"><a
href="https://www.coolbe.cz/cs/products/63aad3dd62029e0142a4ad78"
moz-do-not-send="true" class="moz-txt-link-freetext">https://www.coolbe.cz/cs/products/63aad3dd62029e0142a4ad78</a> </span><span
lang="EN-GB"><o:p></o:p></span></p>
<p><span lang="EN-GB"
style="font-family:"Times New Roman",serif">a
doufat, že kdyžtak odejde jen ten zesilovač?</span><span
lang="EN-GB"><o:p></o:p></span></p>
<p><span lang="EN-GB"
style="font-family:"Times New Roman",serif">Anděl</span><span
lang="EN-GB"><o:p></o:p></span></p>
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