This is the blog of Ronald Bartels that wanders on and off the subject of problem management (that is how it started), but it is best described by Ray who says this is Daddy's thoughts! Like the best music is from the Eighties and a wee dram helps in solving most inconveniences.
Poynting’s MinePoynt antennas make wireless work underground
Poynting has a complete WiFi and cellular range of antennas which are supplied
locally and internationally. Of particular interest, is the circular
polarised helical antenna range used in mines and tunnels called
MinePoynt antennas. These antennas are specifically designed for mines and tunnels, as
the circular polarisation has proved to significantly enhances RF
propagation abilities in these intense conditions. Numerous customer
tests in mines have been performed over the past 10 years showing
MinePoynt antennas to achieve ranges 3x to 4x those obtained with a
similar gain linear polarised antenna.