User manual

9
Second level of functions (two-touch-functions)
The following described functions all can be reached by pressing the FUNC key.
Most of these second-level functions you can recognize by the orange inscription of the keys.
• The function key FUNC first has to be pressed short ( less than ½ a second). The display will read
FUNC.
• After this the desired second-level-key will be pressed.
The FUNC display will automatically disappear after a few seconds or after again pressing FUNC.
MHz-key
For tuning over larger frequency spans it is not convenient to use the rotary switch, it may take too many
steps and too long time. Press function key FUNC. As long as y see FUNC in the display, every step of
the roatary knob becomes as large as 1 MHz – so tuning from one end to the other is now very fast.
Activate repeater shift (offset)
Most amateur radio associations operate club-owned automatic repeater stations located on higher
buildings or mountains. For transmitting via such repeaters, you will need a frequency offset between
your receiving and transmitting frequency. When you press your PTT knob, the frequency of your
transmitter will be shifted a certain amount versus the previous receiving frequency. Such a frequency
shift is necessary to allow parallel operation of a sensitive receiver and a powerful transmitter in the
repeater base station at the same time without degradation.
In amateur radio systems an international standard shift of + or – 600 kHz has been established world-
wide. While European repeaters always use the lower frequency for input, american repeaters often use
the upper shift direction, too. In Europe you will reach all 2 m amateur vrepeaters with – 600 kHz shift.
Your AE 540 allows different repeater settings in VFO mode and memory mode.
• Select desired (receiving) frequency. Press: FUNC, followed by SHIFT .You will see the +
icon in
the display, when this function is used for the first time.
• Repeat this procedure FUNC, followed by SHIFT and see the –
icon
• Repeating the procedure for a third time returns to initial simplex setting (without shift).
Activate Tone Squelch (CTCSS)
• Press FUNC , followed by T-SQ (at microphone).
You will see the T icon. Now Your radio transmits a CTCSS tone parallel to Your normal modulation.
You may select 38 different CTCSS tones via setup menu (next main clause). CTCSS function is only
available with installed CTCSS module (will be sold as option only).
• Repeat procedure FUNC followed by pressing T-SQ : display shows now T-SQ.
Now not only the radio will transmit CTCSS tones, but also the receiver will decode CTCSS tones. The
speaker remains silent as long as the partner station does not transmit exactly the same CTCSS code.
Only when receiving a correctly coded signal, the speaker will switch on and lets You hear the
conversation.
• Pressing FUNC and T-SQ once more will switch back to initial setting without CTCSS.