Does transmitted modulation effect the unit?
Normal voice modulation used on NBFM signals may cause a few degree variation in the display. Data telemetry transmitters may affect the operation depending on the frequencies and modulation methods used. The direction finder will work with most digitally encoded signals (e.g. P25); however, in some cases it may be necessary to use a sweep rate of 500 or 2000 Hz. If there is a specific transmitter that you want to use with the direction finder, please contact the factory.