niall_mcconnell

for your back bone i would go wireless, do a google on repeatit kit, they have relatively inexpensive base stations, coupled with a 120 sector antenna set this in the corner of your farm and then simply point the consumer units at it, as a ball park figure each con unit can support a nest of up to 4 cameras, unless your a millionaire fibre is not an option

its a shame wireles is out of the question its possible to get up to 6 miles relatively cheaply if you have line of sight and with some of the kit working on the bg range the licencing laws that allow wireless broadband entend to cover this