73's & greetings to all readers. Using Google earth, I've obtained coordinates for my QTH and for a location where I will install a second station, approx 1,500 miles away. From a government website, I obtained the declination between true vs magnetic north (it is negative at both sites: 3*17' west at QTH and 12*34'west at the DX). I know how to set the compass to the azimuth shown on Google and then set the antennas at each location to correspond, however, I'm starting to question whether I must make other adjustments to compensate between true north and magnetic north. Will somebody explain if I need to compensate for the difference between magnetic vs true north in order to have both antennas 'facing' each other? I know the beam will forgive a 3 degrees error, but not so sure about the 12 degrees. Both antennas will be moved by an 'armstrong' rotor (fixed).