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	<title>I0GEJ's RadioCronache.com &#187; RSGB</title>
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		<title>FTdx-5000 Review from RadCom June 10 by G3SJX &#8211; Here only some data and a summary</title>
		<link>http://www.radiocronache.com/2010/06/ftdx-5000-review-from-radcom-g3sjx-a-summary/</link>
		<comments>http://www.radiocronache.com/2010/06/ftdx-5000-review-from-radcom-g3sjx-a-summary/#comments</comments>
		<pubDate>Fri, 11 Jun 2010 15:04:37 +0000</pubDate>
		<dc:creator>admin3x</dc:creator>
				<category><![CDATA[Events]]></category>
		<category><![CDATA[FTdx-5000]]></category>
		<category><![CDATA[IMD3]]></category>
		<category><![CDATA[Radcom]]></category>
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		<guid isPermaLink="false">http://www.radiocronache.com/?p=2268</guid>
		<description><![CDATA[FTdx-5000 measured performance → Source: RSGB RadCom  June, 2010 by G3SJX &#8211; Table 1* [*Note]: here, only some of the many performances misured &#8211; View the RadCom Magazine to read the full review by Peter Hart) &#8211; !! IP3, IMD3, and Blocking figures were outstanding with the appropriate Roofing filters selected. !! The only area [...]]]></description>
			<content:encoded><![CDATA[<p><img class="alignnone size-full wp-image-2169" style="margin-right: 15px;" title="Radiocronache" src="http://www.radiocronache.com/wp-content/uploads/2010/05/Radiocronache.jpg" alt="" width="470" height="96" /></p>
<p style="text-align: justify;"><strong>FTdx-5000 measured performance</strong> <span style="color: #ff0000;">→ </span>Source: RSGB RadCom  June, 2010 by G3SJX &#8211; Table 1<strong>*</strong><br />
[<strong>*Note</strong>]: here, only some of the many performances misured &#8211; <strong>View</strong> the RadCom Magazine to read the full review by Peter Hart) &#8211; <span style="color: #ff0000;">!!</span> IP3, IMD3, and Blocking figures were outstanding with the appropriate Roofing filters selected. <span style="color: #ff0000;">!!</span> The only area for concern is the receiver spurious signal rejection&#8230;.</p>
<p style="text-align: justify;"><img class="alignleft size-full wp-image-2277" style="margin-right: 10px;" title="RadCom_june_2010" src="http://www.radiocronache.com/wp-content/uploads/2010/06/RadCom_june_2010.jpg" alt="" width="150" height="225" /><span style="color: #ff0000;">Sensitivity SSB 10dBs-n:n 7MHz band:</span> IPO-1 →0.7uV (-110dBm) PREAMP-1 →0.18uV (-122dBm) PREAMP-2 →0.09uV (-127dBm)<br />
<span style="color: #ff0000;">Intermodulation (Spacing 15kHz) 2400Hz bandwidth 6kH Roofing USB 7MHz band:</span> IPO-1 →IP3 +37.5dBm IMD 105dB PREAMP-1 →IP3 +26dBm IMD 105dB PREAMP-2 →IP3 +18dBm IMD 103dB<br />
<span style="color: #ff0000;">Close-in Intermodulation on 7MHz Band 500Hz bandwidth CW IPO-1:</span><br />
<strong>Spacing</strong> →<strong>2kHz</strong> (15kHz Roofing) IP3 -8.5dBm IMD 77dB &#8211; (6kHz Roofing) IP3 -4dBm IMD 80dB &#8211; (3kHz Roofing) IP3 +33dBm IMD 106dB &#8211; (600Hz Roofing) IP3 +37dBm IMD 109dB<br />
<strong>Spacing</strong> →<strong>10kHz</strong> (15kHz Roofing) IP3 +38dBm IMD 108dB &#8211; (6kHz Roofing) IP3 +39dBm IMD 109dB &#8211; (3kHz Roofing) IP3 +38dBm IMD 109dB &#8211; (600Hz Roofing) IP3 +38dBm IMD 109dB</p>
<p style="text-align: justify;"><img class="alignleft size-full wp-image-1531" style="margin-right: 10px;" title="english" src="http://www.radiocronache.com/wp-content/uploads/2009/07/f_en1.gif" alt="" width="20" height="20" />The 9MHz IF rejection on most bands was greater than 100dB, but on 10MHz it was only 54dB, and on 7MHz it was 74dB. VRF front-end tuning improved these figures by 20dB. The first mixer image was only down by 55dB to 70dB but VRF improved this to better than 75dB.<br />
Spurs on the synthesiser resulted in a number of unwanted receiver responses, notably at approx +/- 425kHz from the received frequency at only 65dB down on the VFO-A rx and at +/- 40kHz down by 85dB. VRF improves these figures but only marginaly on the higher bands.<br />
Third order intercept (IP3), dynamic range (IMD3) and blocking figures were outstanding with the appropriate Roofing filters selected (See the Table-1*). The VFO-B receiver dynamic range is nont quite as good as the VFO-A receiver but is still very respectable.</p>
<p>Link to: <a href="http://www.rsgb.org/radcom/">The RSGB webpage &#8211; RadCom Magazine </a></p>
<p style="text-align: justify;"><img class="alignleft size-full wp-image-1532" style="margin-right: 10px;" title="italiano" src="http://www.radiocronache.com/wp-content/uploads/2009/07/f_it1.gif" alt="" width="20" height="20" />La rejezione IF a 9MHz per la maggior parte delle bande risulta superiore a 100dB, ma sulla banda dei 10MHz scende a soli 54dB, e sulla banda dei 7MHz risulta 74dB.- L&#8217;uso del VRF tuning del front-end migliora queste figure di circa 20dB. L&#8217;immagine del primo mixer risulta attenuata solo da 55 dB a 70 dB, ma con il VRF si ha un miglioramento al valore di 75dB. Le spurie del sintetizzatore produce una serie di risposte indesiderate al di sotto di soli 65dB  rispetto all frequenza  ricevuta,  in particolare a circa +/- 425kHz dal centro della frequenza  sul VFO-A (main rx), ed ancora a +/- 40kHz sono al di sotto di 85dB. L&#8217;inserimento del circuito VRF migliora queste cifre, però solo marginalmente sulle bande più alte di frequenza.<br />
L&#8217;intercept point di terzo ordine (IP3), la gamma dinamica  IMD3 e la dinamica di blocco hanno valori che variano in base alla banda passante  del Roofing filter selezionato (Vedere Tabella-1*). Il ricevitore del VFO-B (sub rx) ha a sua volta una dinamica non altrettanto buona come il  ricevitore VFO-A (main rx), ma comunque è  molto rispettabile. &#8211; <span style="color: #ff0000;">!! </span>Emerge dall&#8217;articolo di Peter  Hart una questione che lo preoccupa:  la effettiva capacità di rejezione di segnali spuri del  ricevitore A.<br />
[<strong>Note</strong>]: RSGB Members Only can now download the June, 2010 RadCom Review  in PDF format.</p>
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		<title>IC-7600 Review RadCom a summary available. New Icom User Manual En 1EX-1 Update 2009/07/23!</title>
		<link>http://www.radiocronache.com/2009/07/ic-7600-review-radcom-summary-new-manual-1ex-1-20090723/</link>
		<comments>http://www.radiocronache.com/2009/07/ic-7600-review-radcom-summary-new-manual-1ex-1-20090723/#comments</comments>
		<pubDate>Sun, 26 Jul 2009 21:25:30 +0000</pubDate>
		<dc:creator>lidio</dc:creator>
				<category><![CDATA[IC-7600]]></category>
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		<guid isPermaLink="false">http://www.radiocronache.com/?p=1599</guid>
		<description><![CDATA[Radcom June 2009 G3SJX review IC-7600 Measured Performance. Summary available: Close-in IMD, IP3 on 7MHz Band, 2.4kHz Bandwidth, USB mode. Preamp Off. &#8211; In the receiver, close-in IMD3 dynamic range, reciprocal mixing noise, MDS (sensitivity), IF filter bandwidth (selectivity) and in-band IMD are important parameters.  A summary can be made available in this table IMD3, [...]]]></description>
			<content:encoded><![CDATA[<p><img class="alignnone size-full wp-image-1605" style="margin-right: 15px;" title="IC-7600-1stfilter" src="http://www.radiocronache.com/wp-content/uploads/2009/07/IC-7600-1stfilter.jpg" alt="IC-7600-1stfilter" width="470" height="205" /></p>
<p style="text-align: justify;"><img class="alignnone size-full wp-image-1531" style="margin-right: 10px;" title="english" src="http://www.radiocronache.com/wp-content/uploads/2009/07/f_en1.gif" alt="english" width="20" height="20" />Radcom June 2009 G3SJX review IC-7600 Measured Performance. Summary available: Close-in IMD, IP3 on 7MHz Band, <span style="text-decoration: underline;">2.4kHz Bandwidth</span>, USB mode. Preamp Off. &#8211; In the receiver, close-in IMD3 dynamic range, reciprocal mixing noise, MDS (sensitivity), IF filter bandwidth (selectivity) and in-band IMD are important parameters.  A summary can be made available in this table IMD3, IP3 report&#8230;.. <span style="color: #ff0000;">Watch</span> the report table, below.</p>
<p style="text-align: justify;">ICOM, has released <strong>new</strong> IC-7600 User Manual En A-6722H-1EX-1 (auditing) &#8211; Last Update 2009/07/23 &#8230;&#8230;. <span style="color: #ff0000;">See</span> the Link below (for download)</p>
<p style="text-align: justify;"><img class="alignnone size-full wp-image-1532" style="margin-right: 10px;" title="italiano" src="http://www.radiocronache.com/wp-content/uploads/2009/07/f_it1.gif" alt="italiano" width="20" height="20" />ICOM  ha rilasciato un nuovo Manuale Utente per l&#8217;IC-7600 in Inglese (1Ex-1 auditing) il 23.07.09 &#8211; (ci sono integrazioni  operative più chiare, con variazioni su molte pagine)&#8230;. Più avanti il Link e la tabella con IMD, IP3  in 7MHz con <span style="text-decoration: underline;">filtro 2,4kHz</span> in USB &#8230;.<span id="more-1599"></span></p>
<p><img class="alignnone size-full wp-image-1607" style="margin-right: 15px;" title="Close-in_Radcom" src="http://www.radiocronache.com/wp-content/uploads/2009/07/Close-in_Radcom.jpg" alt="Close-in_Radcom" width="470" height="157" /></p>
<p style="text-align: justify;">Radcom June 2009 G3SJX review IC-7600 Measured Performance.  Above, you see only one table of many tests radcom. Available: Close-in IMD, IP3 on 7MHz Band with <span style="text-decoration: underline;">2.4kHz</span> Bandwidth, USB mode, Preamp Off, Spacing 3kHz &#8211; 50kHz and 15/6/3kHz Roofing.</p>
<p>Source: (Radcom) &#8211; <em>At close-in generator spacings, intermodulation-limited dynamic range held extremely well, a big improvement on the IC-756Pro3 and one of the best radios araund. Reciprocal mixing noise (RM) from the first LO prevented an accurate assessment using the narrower roofing filters. [Note by G3SJX]: I was unable to measure the front-end blocking level effectively as it was masked by RM noise but was araund +8dBm outside of the roofing filter bandwindth with the preamp out.</em></p>
<p style="text-align: justify;">If you find there is a particular publication of value you would like, please give serious consideration to purchasing it from the publisher for 4.5 British pounds from the RSGB web site. Link to: <a href="http://www.rsgb.org/radcom/">Radcom Magazine &#8211; Radio Society of Great Britain</a></p>
<p style="text-align: justify;">ICOM Inc, has released new IC-7600 User Manual En A-6722H-1EX-1 (auditing) &#8211; Last Update 2009/07/23. <strong><br />
Link to</strong>: <a href="http://www.icom.co.jp/world/support/download/manual/disp_down.php?SWT=&amp;ID=20090217002&amp;GNR=Amateur&amp;TYPE=Base%20Station&amp;PDNM=IC-7600&amp;INQWORDSWT=No&amp;INQWORD=">Manual En 1EX-1 Download by Icom Inc official web</a> (PDF size 14.89MB!)</p>
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		<title>IC-7700 RSGB review summary, RadCom July 2008</title>
		<link>http://www.radiocronache.com/2008/06/ic-7700-rsgb-review-radcom-july-2008/</link>
		<comments>http://www.radiocronache.com/2008/06/ic-7700-rsgb-review-radcom-july-2008/#comments</comments>
		<pubDate>Fri, 06 Jun 2008 14:20:00 +0000</pubDate>
		<dc:creator>lidio</dc:creator>
				<category><![CDATA[IC-7700]]></category>
		<category><![CDATA[DSP unit]]></category>
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		<description><![CDATA[RadCom reviews: IC-7700.  Queste le conclusioni di Peter Hart, G3SJX che ha curato la recenzione per la RSGB, in merito all&#8217;analisi dell&#8217;Icom IC-7700: &#8220;The IC-7700 is without doubt a most impressive radio. Its performance, its features and its ergonomics place it high in the top league. As a general purpose and contest radio it is [...]]]></description>
			<content:encoded><![CDATA[<p><a href="http://www.radiocronache.com/wp-content/uploads/blogger/_cZyIlnK6dPc/SFMBBNJa0wI/AAAAAAAAAYg/h9Nmx9fjbmY/s1600/front-ic-7700.jpg"><img id="BLOGGER_PHOTO_ID_5211510314018460418" style="CURSOR: hand" src="http://www.radiocronache.com/wp-content/uploads/blogger/_cZyIlnK6dPc/SFMBBNJa0wI/AAAAAAAAAYg/h9Nmx9fjbmY/s320/front-ic-7700.jpg" border="0" alt="" /></a><br />
<strong>RadCom reviews: IC-7700. </strong> Queste le conclusioni di Peter Hart, G3SJX che ha curato la recenzione per la RSGB, in merito all&#8217;analisi dell&#8217;Icom IC-7700:<br />
&#8220;The IC-7700 is without doubt a most impressive radio. Its performance, its features and its ergonomics place it high in the top league. As a general purpose and contest radio it is excellent, but for serious DXing with split frequency operation the lack of a second channel receive capability or dual-watch is a major shortcoming, particularly with a price tag around 4,000 UK Pounds. It all depends where your interests lie as to which features are most important&#8221;.</p>
<p style="text-align: justify;">Link to: <a href="http://www.rsgb.org/news/radcom/index.php">Radcom RSGB (Radio Society of Great Britain) Home Page</a></p>
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