TSR: Choose whether to enable the Transmitting SWR Protection
function or not.
ON: When ON is selected, the radio will detect the SWR of your
antenna. Once the SWR is beyond the SWR limit set in advance, the
radio would stop transmitting automatically and the speaker will emit a
voice prompt. Then, “HI S” icon will display on the LCD to remind you
that the antenna SWR is too high.
OFF: When OFF is selected, the SWR Protection function is disabled.
NOTE: To protect the radio from long transmission under high SWR, the
radio would automatically start SWR Protection once the SWR Value is
higher than 20:1.
TDC: Choose whether to enable Voltage Protection function or not.
ON: When ON is selected, the radio will detect the supplied voltage.
Once the voltage surpasses the limit that was set in advance, the radio
would display “DC LO” or “DC HI” to remind you that the voltage is not
in normal state. Meanwhile, the radio will prohibit transmitting and emit a
beep sound.