In order to check that the polarisations have been correctly connected, we use a very low power signal, transmitted from a dipole on a test mast. We tried a number of locations in order to get sufficient power and contrast to verify the system.
Attaching the antenna to our P2P mast. (Photo: D. McKay-Bukowski)
The stand-alone mast. Note the test LBA aerial in the foreground. (Photo: D. McKay-Bukowski)