Non Radio covert communications

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(28 August 2013, 20:21)Mortblanc Wrote: The reinvention of the wheel;

http://electronics.howstuffworks.com/telephone4.htm

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originally telephone networks were hard wired and battery powered.

One does not even need the surplus army field sets, just a few old phones, some wire and a solar charger for the battery.

Hi Mortblanc, you;re right telephones are a fairly simpl and discreet way of communication.

I'm looking at range of between 1/4 and 1 1/2 miles mostly across agricultural land, to observation locations beyond the boundaries of our property. It would be very hard to run wires between these locations and even if I were able to, they would almost certainly get cut by farming activities.

We are already using ultra low powered radios succesfully. I am considering alternatives thet areeven more discreet.