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	<title>Electronica - scheme electronice &#187; antene</title>
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	<description>Electronica - amplificatoare audio, emitatoare, surse tensiune, antene, electronica hobby diy</description>
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		<title>Antena directiva Yagi 3 elementi</title>
		<link>http://www.scheme.dring.ro/64/antena-directiva-yagi-3-elementi/</link>
		<comments>http://www.scheme.dring.ro/64/antena-directiva-yagi-3-elementi/#comments</comments>
		<pubDate>Sat, 04 Feb 2012 21:56:45 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[antene]]></category>
		<category><![CDATA[antena directionala]]></category>
		<category><![CDATA[antene directive]]></category>
		<category><![CDATA[yagi]]></category>

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		<description><![CDATA[Aceasta antena se poate folosi atat pt emisie cat si receptie desi este preponderent folosita la emisie . Este formata din 3 elemente : director, dipol si reflector. Schema prezentata este valabila pt frecventa de 95 MHz pt alte frecvente folositi indicatiile din desenul de mai jos. Related posts:Antena dipol inchis Dipolul inchis radiaza in [...]


Related posts:<ol><li><a href='http://www.scheme.dring.ro/67/antena-dipol-inchis/' rel='bookmark' title='Permanent Link: Antena dipol inchis'>Antena dipol inchis</a> <small>Dipolul inchis radiaza in forma numarului 8 si are un...</small></li>
<li><a href='http://www.scheme.dring.ro/232/antena-telescopica-activa-de-banda-larga/' rel='bookmark' title='Permanent Link: Antena telescopica activa de banda larga'>Antena telescopica activa de banda larga</a> <small>Majoritatea amplificatoarelor VHF / UHF pentru antene simetrice ( cum...</small></li>
<li><a href='http://www.scheme.dring.ro/439/selector-comutator-electronic-de-antena/' rel='bookmark' title='Permanent Link: Selector / Comutator electronic de antena'>Selector / Comutator electronic de antena</a> <small>Selectorul / comutatorul electronic de antena a fost conceput pentru...</small></li>
</ol>]]></description>
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		<slash:comments>5</slash:comments>
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		<title>Antena telescopica activa de banda larga</title>
		<link>http://www.scheme.dring.ro/232/antena-telescopica-activa-de-banda-larga/</link>
		<comments>http://www.scheme.dring.ro/232/antena-telescopica-activa-de-banda-larga/#comments</comments>
		<pubDate>Sun, 22 Jan 2012 17:37:15 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[amplificator radio]]></category>
		<category><![CDATA[antene]]></category>
		<category><![CDATA[casa]]></category>
		<category><![CDATA[Radio]]></category>
		<category><![CDATA[utile rf]]></category>
		<category><![CDATA[antena telescopica]]></category>
		<category><![CDATA[BFG65]]></category>

		<guid isPermaLink="false">http://scheme.dring.ro/?p=232</guid>
		<description><![CDATA[Majoritatea amplificatoarelor VHF / UHF pentru antene simetrice ( cum sunt dipolul deschis sau inchis ) au la intrare un balun ( balanced to unbalanced &#8211; transformator de simetrizare simetric-asimetric). Un balun este un dispozitiv inductiv care converteste semnalul simetric (echilibrat) de RF intr-un semnal asimetric (neechilibrat) care se poate aplica in baza transzistorului. Din [...]


Related posts:<ol><li><a href='http://www.scheme.dring.ro/5/antena-dipol-deschis/' rel='bookmark' title='Permanent Link: Antena dipol deschis'>Antena dipol deschis</a> <small>Antena dipol deschis este cea mai folosita de radio amatorii...</small></li>
<li><a href='http://www.scheme.dring.ro/67/antena-dipol-inchis/' rel='bookmark' title='Permanent Link: Antena dipol inchis'>Antena dipol inchis</a> <small>Dipolul inchis radiaza in forma numarului 8 si are un...</small></li>
<li><a href='http://www.scheme.dring.ro/64/antena-directiva-yagi-3-elementi/' rel='bookmark' title='Permanent Link: Antena directiva Yagi 3 elementi'>Antena directiva Yagi 3 elementi</a> <small>Aceasta antena se poate folosi atat pt emisie cat si...</small></li>
</ol>]]></description>
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		<slash:comments>1</slash:comments>
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		<title>Antena dipol inchis</title>
		<link>http://www.scheme.dring.ro/67/antena-dipol-inchis/</link>
		<comments>http://www.scheme.dring.ro/67/antena-dipol-inchis/#comments</comments>
		<pubDate>Sat, 14 Jan 2012 15:55:52 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[antene]]></category>
		<category><![CDATA[dipol]]></category>

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		<description><![CDATA[Dipolul inchis radiaza in forma numarului 8 si are un randament mai mare ca dipolul deschis in sensul ca in partile unde are directivitate acopera o distanta mai mare. Este mai pretentioasa la constructie , nerespectarea valorilor duce la o functionare necorespunzatoare a antenei. Lungimea antenei se calculeaza astfel : La = 145 / frecventa [...]


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<li><a href='http://www.scheme.dring.ro/6/amplificator-rf-100w-bly94/' rel='bookmark' title='Permanent Link: Amplificator rf 100W BLY94'>Amplificator rf 100W BLY94</a> <small>Schema unui amplificator radio de 100W construit cu doua tranzistoare...</small></li>
<li><a href='http://www.scheme.dring.ro/232/antena-telescopica-activa-de-banda-larga/' rel='bookmark' title='Permanent Link: Antena telescopica activa de banda larga'>Antena telescopica activa de banda larga</a> <small>Majoritatea amplificatoarelor VHF / UHF pentru antene simetrice ( cum...</small></li>
</ol>]]></description>
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		<slash:comments>16</slash:comments>
		</item>
		<item>
		<title>Antena dipol deschis</title>
		<link>http://www.scheme.dring.ro/5/antena-dipol-deschis/</link>
		<comments>http://www.scheme.dring.ro/5/antena-dipol-deschis/#comments</comments>
		<pubDate>Tue, 08 Nov 2011 20:43:17 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[antene]]></category>
		<category><![CDATA[dipol deschis]]></category>

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		<description><![CDATA[Antena dipol deschis este cea mai folosita de radio amatorii incepatori deoarece este foarte simplu de construit insa prezinta unele dezavantaje. Printre acestea enumeram : directivitate scazuta, castig aproape zero, largime banda mica &#8230; Dipolul deschis este realizat in general dupa cum se arata in exemplul 1 insa trebuie tinut cont ca dipolul deschis este [...]


Related posts:<ol><li><a href='http://www.scheme.dring.ro/67/antena-dipol-inchis/' rel='bookmark' title='Permanent Link: Antena dipol inchis'>Antena dipol inchis</a> <small>Dipolul inchis radiaza in forma numarului 8 si are un...</small></li>
<li><a href='http://www.scheme.dring.ro/232/antena-telescopica-activa-de-banda-larga/' rel='bookmark' title='Permanent Link: Antena telescopica activa de banda larga'>Antena telescopica activa de banda larga</a> <small>Majoritatea amplificatoarelor VHF / UHF pentru antene simetrice ( cum...</small></li>
<li><a href='http://www.scheme.dring.ro/64/antena-directiva-yagi-3-elementi/' rel='bookmark' title='Permanent Link: Antena directiva Yagi 3 elementi'>Antena directiva Yagi 3 elementi</a> <small>Aceasta antena se poate folosi atat pt emisie cat si...</small></li>
</ol>]]></description>
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		<slash:comments>8</slash:comments>
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