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<blockquote data-quote="mikethebike" data-source="post: 25113" data-attributes="member: 175983">Yet another problem to add to the endless list regarding 2D reception!Since the BBC's changeover to 2D we've been watching BBC and ITV on a 1.2M offset dish which works perfectly well from about 9am until about 9.30pm if the weather is good, all BBC and ITV channels performing more or less equally during this time, appearing and disappearing together.But knowing that winter is not all that far off and the weather here (between Bologna and Florence at about 700m up in the Apennines) is often misty and rainy we thought we should upgrade.So a 2M prime focus dish was purchased, equipped with an Invacom 0.3dB quad LNB, and set up with a clear view of the sky at 28 deg E.Astra was found easily, and some 2D channels, notably the vertical ones, came thundering in, and were perfect up until well after midnight (by which time the signals weren't fading out, I was!).&nbsp; But all 2d horizontal signals are completely absent - the Panny 20 declaring no signal the moment the channel is selected. Non 2D horizontal channels work fine, and two different receivers have identical behaviour.I am aware that there is a difference in strength between H and V, but this much difference seems really strange to me since my 1.2M offset dish behaved identically on all 2D channels regardless of polarisation.Does anyone have any similar experiences or suggestions?ThanksMikePS There is a polariser between the LNB (C120 interface) and feedhorn but it's open circuit so is not connected.&nbsp; I presume that this can't have any effect?</blockquote>

[QUOTE="mikethebike, post: 25113, member: 175983"] Yet another problem to add to the endless list regarding 2D reception! Since the BBC's changeover to 2D we've been watching BBC and ITV on a 1.2M offset dish which works perfectly well from about 9am until about 9.30pm if the weather is good, all BBC and ITV channels performing more or less equally during this time, appearing and disappearing together. But knowing that winter is not all that far off and the weather here (between Bologna and Florence at about 700m up in the Apennines) is often misty and rainy we thought we should upgrade. So a 2M prime focus dish was purchased, equipped with an Invacom 0.3dB quad LNB, and set up with a clear view of the sky at 28 deg E. Astra was found easily, and some 2D channels, notably the vertical ones, came thundering in, and were perfect up until well after midnight (by which time the signals weren't fading out, I was!). But all 2d horizontal signals are completely absent - the Panny 20 declaring no signal the moment the channel is selected. Non 2D horizontal channels work fine, and two different receivers have identical behaviour. I am aware that there is a difference in strength between H and V, but this much difference seems really strange to me since my 1.2M offset dish behaved identically on all 2D channels regardless of polarisation. Does anyone have any similar experiences or suggestions? Thanks Mike PS There is a polariser between the LNB (C120 interface) and feedhorn but it's open circuit so is not connected. I presume that this can't have any effect? [/QUOTE]

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