HOW TO ELIMINATE HIGH FREQUENCY CO-

HOW TO ELIMINATE HIGH FREQUENCY CO-AX CABLES

One of the problems us ATV guys have is we need a few MHz bandwidth for ATV so over the years we have been pushed higher and higher in frequency and as you get higher producing RF at reasonable power becomes more and more difficult until Technology creeps up to make it easier but usually that is tens of years behind....When we have got RF we next have the problem of sending this up to the aerial system generally using co-ax cable.....The better the cable the more costly it is......The higher the frequency in a co-ax cable the more the loss is........A typical Good co-ax at about £1 a metre is Westflex 103 but has a loss at 1000MHz of 13db /100 metres....So a typical run from a shack to the top of a mast could be 20 metres and at a frequency of 1300MHz plus plugs expect a loss of 4/5db meaning in real power terms only about a third of the power gets sent out........When one gets up to 10,000 MHz the problem really gets worse.....

Now we can generate simply an RF beam with a very small diameter it is possible to remove the co-ax and send direct from the shack as an RF beam up to the top of the mast (Note the mast must be stable) with near perfect power transfer at ANY FREQUENCY BAND......

The only problem I can see so far is how to weather proof the sender and receiver....