10 | Midland CT990 instruction guide
Frequency shift direction (ShiftDIR) - Menu Utilities 4
In Standby mode press Menu Utilities + 4; ”SHIFTDIR” will appear on the
display.
Press Menu to enter the function. Use the ▼/▲ keys or rotate the encoder to
select +/-/OFF, then push Menu again for confirmation.
To return to standby mode press Back.
+ (positive oset) the tx frequency is higher than rx frequency
- (negative oset) the tx frequency is lower than rx frequency.
OFF frequency shift direction not enabled.
NOTE: if the frequency oset is out of the allowed frequency band, the radio can-
not transmit. So please make sure that the frequency oset and the rx frequency
are within the allowed frequency range.
Frequency oset (O-Set) - Menu Utilities 5
The oset is the frequency dierence between transmission and reception.
The frequency oset of this radio is between 0 and 99.995 MHz.
In standby mode, press Menu Utilities + 5. The screen will display “OFFSET ”.
Press Menu to enter the function. Press the ▲/▼ buttons or rotate the enco-
der to select the frequency oset or you can manually digit the oset with the
keypad. Press Menu to confirm.
To return to standby mode press Back.
With the frequency oset, it is possible to transmit and receive in two dierent
frequencies.
Wide/narrow bandwidth (Bandwidth) - Menu Utilities 6
In standby mode, press Menu Utilities + 6. The display will show “NARROW-
WIDE”.
Press Menu to enter the function. Press the ▲/▼ keys or rotate the encoder
to select Wide/Narrow (25/12,5KHz) bandwidth, then press Menu to confirm.
To return to the standby mode press Back.
