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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
C-Band Reception, UK and Europe
53E Express-AM6
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<blockquote data-quote="moonbase" data-source="post: 1079129" data-attributes="member: 178786"><p>I switched over the LNB to the WiMax version and recorded the signal levels before and after the switch over. In addition, I used a 12 metre shorter cable run with one less A/B switch in line.</p><p></p><p>The signal levels improved marginally using the shorter cable run and one less A/B switch. However, when comparing the non WiMax LNB with the WiMax LNB some signals levels decreased and others increased. There seems to be a trend whereby most signal levels of 3739 MHz and below were stronger on the non Wimax LNB and most signals of 3758 MHz and above were stronger on the WiMax LNB. Some of the signal level gaps were normal fluctuation, others were slightly more noticable.</p><p></p><p>The WiMax LNB is specified for 3700 - 4200 MHz, the non WiMax LNB is specified for 3400 - 4200 MHz. I guess the results are probably as expected with the WiMax version having marginally poorer signal levels for frequencies below its specified range?</p><p></p><p>This mornings scan result table is attached below. The readings were taken from the signal level indicator of a Dr HD F15 receiver. There is not much more I can do with this satellite apart from tweak the feed/scalar pair distances. On to the next...</p><p></p><p>.</p><p>[ATTACH=full]127096[/ATTACH]</p></blockquote><p></p>
[QUOTE="moonbase, post: 1079129, member: 178786"] I switched over the LNB to the WiMax version and recorded the signal levels before and after the switch over. In addition, I used a 12 metre shorter cable run with one less A/B switch in line. The signal levels improved marginally using the shorter cable run and one less A/B switch. However, when comparing the non WiMax LNB with the WiMax LNB some signals levels decreased and others increased. There seems to be a trend whereby most signal levels of 3739 MHz and below were stronger on the non Wimax LNB and most signals of 3758 MHz and above were stronger on the WiMax LNB. Some of the signal level gaps were normal fluctuation, others were slightly more noticable. The WiMax LNB is specified for 3700 - 4200 MHz, the non WiMax LNB is specified for 3400 - 4200 MHz. I guess the results are probably as expected with the WiMax version having marginally poorer signal levels for frequencies below its specified range? This mornings scan result table is attached below. The readings were taken from the signal level indicator of a Dr HD F15 receiver. There is not much more I can do with this satellite apart from tweak the feed/scalar pair distances. On to the next... . [ATTACH type="full"]127096[/ATTACH] [/QUOTE]
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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
C-Band Reception, UK and Europe
53E Express-AM6
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