Originally Posted by JABS
Also, reception is not good unless the aerial has a clear view of the sky.
The info is good if it's what you need.
I'm using a Nasa active antenna on a McMurdo navtex and it's receiving everything from Reykjavik to Turkey. The antenna is on the boat roof. Like any antenna, the radio waves can be blocked by various things but, in general, navtex signals travel a long way easily.
My home Navtex is indoors and the antenna is sitting on a windowsill. It is set to receive from Norway, Portpatrick and Cullercoats. I'm on the east coast and the Portpatrick signal is a bit weak, it sometimes droxps chxraxters.