Ive seen many of these made using car antennas but there all wired up to mains electrics which I don't have in the coop so my idea was to use a car battery, ive bought everything needed to set it up but was wondering if you byc keepers think it will work too... Thats the sketch of how it will be wired up, so am I right in thinking this will work (pictured above) ? Because if I was fitting this to a car the black one is ground to the car body with the green and red being the + and - but would I just get away with cutting the coax antenna off ? or would that need to be the switch wire?, the +T on the timer is obviously the lived timed therefore been the switch. How would I test it to find if I have a good earth? These are the antenna connectors. . This is the antenna its self... Thanks for the input as I can't find one wired up this way!