Interference Effects from Nearby Transmitters

A question frequently asked by our customers is “How close can I mount a transmit antenna to the direction finding antenna.”  Typically we respond by telling the customer to keep the DF antenna well separated from the transmit antenna.  However, practically all our customers have limited options on siting the direction finder.  With this in mind, we have written a new application note to help our customers determine the effect of a nearby transmitter on the sensitivity of the radio direction finder. In the application note we present a number of graphs to aid in the calculation of the received signal strength at the direction finding antenna. We also present data show the desensitization of the direction finder due to interfering signals. Please take a look at Interference Effects from Nearby Transmitters.