Operation Manual
Page 22
...Frequency Controls the transducer frequency used by the unit. When using fishing modes, ping speed settings are not necessary. Sonar Operation | Elite-4x HDI 20 Sonar Options Ping Speed Controls the rate the transducer uses to monitor the effects noise (boat pumps, water conditions, engine ignition... out undesired signals. This unit supports three conventional sonar frequencies: 50kHz, 83kHz and 200kHz. 200 kHz has the highest sensitivity and best target separation in shallow water. 83 kHz offers a wider cone angle for the selected fishing conditions, so in most cases, adjustments...
...Frequency Controls the transducer frequency used by the unit. When using fishing modes, ping speed settings are not necessary. Sonar Operation | Elite-4x HDI 20 Sonar Options Ping Speed Controls the rate the transducer uses to monitor the effects noise (boat pumps, water conditions, engine ignition... out undesired signals. This unit supports three conventional sonar frequencies: 50kHz, 83kHz and 200kHz. 200 kHz has the highest sensitivity and best target separation in shallow water. 83 kHz offers a wider cone angle for the selected fishing conditions, so in most cases, adjustments...