Mount Leinster - Vertical or Horizontal Polarization ?

Mr McBoatface

Hi folks,

I'm in Athy, Kildare and have been receiving the test DTT signal loud and clear for over a year now. When I originally set up my loft aerial I opted for a Televes DAT75 Aerial and pointed towards Mount Leinster using a vertical polarization. I went with vertical polarization because I read and reviewed the DTT map here " http://www.freesat.ie/index.php?cat=Terrestrial_Aerials "

However while browsing around today I came across several sites with DTT maps showing Mount Leinster required horizontal polarization " http://tvtrade.ie/inf/13_26/Technical-Information,Aerials-digital "

Now I believe if it ain't broke don't fix and I'm getting a 100% level with 80% quality level so I'm happy with the setup. But for the purist in me what is the correct polarization ?

lawhec

Don't live in the service area, but I understand that the polarisation for receiving DTT (on UHF) from Mount Leinster is Horizontal.

The Vertical polarisation refers to VHF analogue TV reception of RTÉ1 and RTÉ2 from the same site.

The Cush

jobyrne30 wrote: »

I'm in Athy, Kildare and have been receiving the test DTT signal loud and clear for over a year now. When I originally set up my loft aerial I opted for a Televes DAT75 Aerial and pointed towards Mount Leinster using a vertical polarization. I went with vertical polarization because I read and reviewed the DTT map here " http://www.freesat.ie/index.php?cat=Terrestrial_Aerials "

That map was taken from http://www.irish-tv.com/irishtrans.asp, in the case of Mullaghanish, Maghera and Mt Leinster the polarisations refer to the VHF aerials used for RTÉ 1 & 2 and not the horizontal UHF aerials for TV3 and TG4.

See these links for the correct polarisations
http://www.rtenl.ie/downloads/television-frequencies.pdf
http://www.rtenl.ie/downloads/ReceivingDTT.pdf