Workman AM SSb Sideband Cb Ham radio FC30BT Blue Frequency Counter Connex Galaxy Displays the Frequency ALL the time, in RX and TX if using the modular jack connection. External input jack accepts from 0.1 ~ 1V injected signal. using this connection displays frequency only in TX. Hi - Med - Low stepping dimmer switch Display: 6 Digit Bright LED SSB Frequency: Auto Correction (when using modular jack connection)