UK Broadcast Transmission
Main indexMain GalleryFeaturesDSODesktop wallpaper
InfoSend in your photosFAQsMailing listsContact
TeletextMHPTBSAstrohosts

THE TRANSMISSION GALLERY

Photos by Jordy Lyons

Carnmoney Hill
Landlord: BBC NGR: J336829 Site Height: 182.9m Structure Height: 45.72m
Analogue TV: BBC1: 40  BBC2: 46  ITV1: 43  Ch4: 50   
Digital TV:          
BBC Radio: R1: 98.4  R2: 88.8  R3: 91.0  R4: 93.2   
  R. Ulster: 95.3   
Ind. National Radio:    
Ind. Local Radio: City Beat: 102.5   
     
Digital Radio:          
Comments: Relay of Divis
   

Carnmoney Hill was built due to what I've named the bowl effect. dDivis is blocked by cavehill, a rock outcrop in North Belfast - like a cereal bowl with a hill in the middle. Newtownabbey is sandwiched in the valley below and can't receive Divis.

The vertically polarised FM trnamissions are from the end-fed antenna at the top of the tower.

I've included an image of the next-door site known as Glencairn, Glencairn was the original site for television before Divis was built. These days the site is still broadcasting Channel 9 local television at 1kw. It's known today as Ballygomartin. The top of Divis is just visible to the right of the tower.

Reception at this site certainly seems to be a bit of a struggle. There is, just about, line-of sight to Divis -as the last photo on this page shows - but ghosting and multipath must be quite severe as an 18 element yaga is used for the UHF feed and 4 spaced yagis are needed to clean up the FM stereo signal.

1

Back to TX Gallery index | TX main index