Briadband in remote areas in campervan

System

Gloomendoom wrote: »

That said, turning the router on its vertical axis does make the difference between a signal and no signal at all so there may be other factors present.

Signal polarity. If the transmitter's antennas are vertical emitting a vertically polarised signal and the receivers are horizontal there's a 20dB loss due to cross polarisation. 20dB loss means the strength of the received signal is 100 times weaker.

In addition to that antennas are directional. A vertical antenna will output a signal over 360 degrees but a horizontal single element antenna would only receive decently at right angles to the orientation of the antenna - i,e if it was running North-South it would receive best East-West with any signals from the north and south being attenuated 30/40/50dB or more effectively making them non-existent unless you were on top of the transmitter.


When it comes to data transmission just 6dB can make the difference between receiving usable data or not.

Gloomendoom

Tarambor wrote: »

Signal polarity. If the transmitter's antennas are vertical emitting a vertically polarised signal and the receivers are horizontal there's a 20dB loss due to cross polarisation. 20dB loss means the strength of the received signal is 100 times weaker. When it comes to data transmission just 6dB can make the difference between receiving usable data or not.

Ta,

The internal aerials of the B310 I use are cross polarised (I've had one apart) and the strongest signal received seems to correspond to turning the unit so that the horizontal aerial is fully broadside to the transmitter.

Gloomendoom

Tarambor wrote: »

When it comes to data transmission just 6dB can make the difference between receiving usable data or not.

That's why I gave up with the external aerials and mounted the router externally instead. Too many losses in the extra cable and connections.