4.3 RIT
RIT (Receiver Incremental Tuning) allows the receive frequency to be adjusted while the transmit
frequency (the displayed VFO frequency) remains the same. It is useful if the other station is off-
tune, or drifting; other uses include working DX stations who may be listening on a different
frequency some kHz away from their transmit frequency.
This radio transceiver allows RIT values from -9,999Hz to +9,999Hz.
RIT can be easily adjusted during ordinary operation by double-clicking the “Select” button
(indicated on the enclosure as “.. RIT”:
Now use the rotary encoder to tune the RIT. As you do so, you will hear the RIT immediately
applied to the VFO.
The tune rate of the RIT control is again indicated by the underlined digit (here 100Hz). In order to
change the tune rate, press and hold the “Rotary” button (in the rotary encoder shaft) and turn the
rotary encoder at the same time. You will see the cursor move to the left or right 1 digit at a time.
Again, the cursor under the comma indicates 500Hz tuning steps.
To cancel RIT tuning (reset the RIT to zero), press the “Exit” button; this returns to main operating
mode and sets the RIT to zero.
To return to the main operating mode, press the “Select” button. Now the RIT is displayed under
the VFO, for example:
A14,006,50
+0,300
Remember that cancelling RIT mode is easy, just double-click the “Select” button to show the RIT
editing, then press the “Exit” button to cancel it (which means, set it to zero).
Transmitting is possible while the RIT display is active. You can also press the rotary encoder
shaft button to select sending a stored message, while the Speed adjustment setting is active.
4.4 VFO mode
A single press on the “Exit” button changes the active VFO mode. There are two independent
VFOs named A and B. There are three VFO modes for using these VFOs:
VFO A is active as transmit and receive VFO; if non-zero, RIT is applied during receive
VFO B is active as transmit and receive VFO; if non-zero, RIT is applied during receive
Split: VFO A is used for receive, VFO B is used for transmit; RIT is ignored completely
Split mode is often used by DX stations, they transmit and receive on separate frequencies.
QMX operang manual; rmware 1_00_012 13
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