Some Correlations of Radio Reception with Atmospheric Temperature and Pressure

Night reception and temperature at the receiver are found directly related, maximum reception being associated with maximum temperatures and vice versa. This is the reverse of the relation previously found by Austin for day reception, where falling temperature improved reception, and is therefore another case of the already established inverse relation of night to day reception. The temperature effect appears to be local to the receiver, for no definite relation was found between temperature at the transmitter and reception. A correlation between night reception and pressure was also found, signal strength increasing as areas of low pressure passed over the receiver, and decreasing with the passages of high pressures.