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What's On, Transponder and channel support
Transponders & channels
Problems with TP 11,623 on Hot Bird 13E
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<blockquote data-quote="guest" data-source="post: 579311"><p>DECT Phones operate around 1.8/1.9 GHz.</p><p></p><p>They exploit lack of immunity in cabling, mainly, as opposed to affecting the LNB or Receiver.</p><p></p><p>The Receiver, being fully enclosed, acts as a Faraday Cage of sorts and should have adequate EMC Immunity.</p><p></p><p>So, the cabling (including effectiveness of screening by design and physical condition, joints, wall faceplates etc.) being the weakness, implies that the interference is at L Band:</p><p></p><p>For Low Band, and working backwards to ascertain which Ku Band Channels you might have difficulty with, add 1.8/1.9 GHz to the LNB Local Oscillator at 9750 MHz and you get 11550/11650 MHz (Ballpark).</p><p></p><p>For High Band, add 1.8/1.9 GHz to the Local Oscillator at 10600 MHz and you get 12400/12500 MHz (Ballpark).</p><p></p><p>But DECT is not the only possible source: In the UK, BT Home Hub (For Wireless Broadband) is known to be a potential nasty.</p><p></p><p>In your specific case, you are looking at 11623 - 9750 = 1.873 GHz as the culprit emitter.</p></blockquote><p></p>
[QUOTE="guest, post: 579311"] DECT Phones operate around 1.8/1.9 GHz. They exploit lack of immunity in cabling, mainly, as opposed to affecting the LNB or Receiver. The Receiver, being fully enclosed, acts as a Faraday Cage of sorts and should have adequate EMC Immunity. So, the cabling (including effectiveness of screening by design and physical condition, joints, wall faceplates etc.) being the weakness, implies that the interference is at L Band: For Low Band, and working backwards to ascertain which Ku Band Channels you might have difficulty with, add 1.8/1.9 GHz to the LNB Local Oscillator at 9750 MHz and you get 11550/11650 MHz (Ballpark). For High Band, add 1.8/1.9 GHz to the Local Oscillator at 10600 MHz and you get 12400/12500 MHz (Ballpark). But DECT is not the only possible source: In the UK, BT Home Hub (For Wireless Broadband) is known to be a potential nasty. In your specific case, you are looking at 11623 - 9750 = 1.873 GHz as the culprit emitter. [/QUOTE]
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What's On, Transponder and channel support
Transponders & channels
Problems with TP 11,623 on Hot Bird 13E
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