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HOW TO RECOGNISE MORE TYPES OF BROADCASTING AERIALS FROM A QUITE A LONG WAY AWAY

By Roger Piper

Ancillary Aerials

The STL receive aerials often used by CR operators have already been described. GPS (Global Positioning System) receive aerials are to be found at some sites. They are used to receive an accurate time reference to coordinate the transmission of data streams.
Many sites also host microwave links, usually using dishes which can be identified by the vertical front face, as here at Harrow Weald. Some may be in use for interlinking broadcast sites, but there’s no easy way of knowing that without inside information.

Other dishes may be used in connection with satellites for programme feeds, or for telemetry links to monitor and/or control the site equipment. They are distinctive as the front faces skywards, as here at Wye where one is attached to the mast.

 

Many UHF tv relays are having such dishes added as part of the national digital switchover programme. These dishes provide a two-way telemetry link back to Arqiva's central control room. This example is at Portreath in Cornwall.
Satellite dishes may also be mounted at ground level or attached to buildings, as here at Sandy Heath.
Be aware, though, that satellite dishes at some sites have a near vertical front face but are fed ‘offset’, like most domestic satellite dishes, so are actually beamed up at quite a high angle, as here at Lark Stoke.

Non-broadcast aerials | Broadcast aerials

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