Frequencies can be added either manually, or copy and pasted from
Radio
Reference DB
Frequencies should be formatted in MHZ 154.265. If a frequency is a
control channel. a c should be added to the end 454.050c).
A sample rate you want to use and your dongle supports. For RTL-SDR 2.4 is a
rate.
The "Show Source Configuration" button will give you an auto generated
source block for a trunk recorder configuration.
Frequencies too close to the edges of the low-edge and high-edge may suffer
RX issues.
Don't overlap other dongles on high/low edges. If a dongle overlaps with another lower the sample rate on one of them.
If the center frequency is a channel you are trying to receive, adjust the center up or down by 12khz.
Frequencies too close to the edges of the low-edge and high-edge may suffer
RX issues.
SDR Coverage Calculator
This tool calculates the required number of dongles and determines the center frequency for each dongle based on the provided list of frequencies and the selected sample rate.