Welcome to the Operations page where you can test fly the XCOM and become familiar with its basic operations. This page is interactive and will simulate most of the features of the XCOM.. Lets start.

Backlight

The XCOM is equipped with a backlit LCD screen for enhanced readability in low light conditions.  An external switch can be installed to activate this feature.  In this demonstration, the switch below the radio can be selected to toggle the backlight on and off.  The default position is ON.  Turn the backlight OFF by clicking on the toggle of the backlight switch.

Turn ON and OFF

Place your mouse over the ON button and click. The radio will turn ON. To turn the radio off click and hold the ON button for 2 seconds. This two second press is required to reduce the number of incidents of accidentally turning the unit off in the air. Turn the radio back on again by clicking the ON button. After the unit starts, LCD will display the active and standby frequencies which were last used. The active frequency is the upper line and is displayed in larger size.

Set the Volume

Normally you would adjust the Volume by turning the VOL/SQH knob. To simulate turning the know, place the mouse just above the knob where the mouse cursor will turn into a plus + or minus - symbol. When the plus + symbol appears, click the mouse to increase the volume. If the minus - symbol is showing, click to decrease volume. The word Vol and the current value will be displayed on the lower line of the LCD display in place of the standby frequency. For demonstration purposes, adjust the volume to 15.   If you leave the display for two seconds, the Volume will disappear and the radio will return to the default display showing the active and standby frequencies.

Set squelch on radio

Place your mouse over the VOL/SQH knob and click. This simulates pressing the volume knob in on the XCOM and the standby frequency changes to display Squelch and the current value. Using the plus and minus symbols as above, simulate turning the knob to raise or lower the radio squelch. For our demonstration if you take the squelch lower than 26 you will open the squelch and, if your computer has a sound card and speakers, you will hear static/background noise. Wind the squelch back up and you will cancel the noise just as you would in a normal aircraft.  If you leave the display for two seconds the radio will return to the default display showing the active and standby frequencies.

Set the frequency

The F/CH knob is used to set the frequency or select the memory channel. Adjustments are made to the standby frequency and then swapped into the active frequency.  Using the plus + and minus - symbols, turn the F/CH knob to adjust the frequency up and down. In default mode, the KHz increases in 25 KHz increments.  As you rotate up past 975 or down past 000 the MHz will follow.  To separately adjust the MHz, press the knob.  The first digit of the MHZ flashes to show that MHz has been selected.  To adjust the KHz independent of MHz, press the knob again.  The first digit of the KHz value flashes to show that KHz is selected.  Pressing the knob a final time reverts back to the standard setting.  For demonstration, set the standby frequency to the Gold Coast ATIS on 134.500

Toggle active and standby frequencies

The standby frequency can be made active by using the FLIP/FLOP button.  This is the button on the right of the display with the two arrows.  Once you have set the desired frequency, press the FLIP/FLOP button to swap the standby (lower) frequency and the active (upper) frequency. If you computer has a sound card and speakers, and you have set the frequency as above, you should hear the ATIS recording. (NOTE: The quality of Audio in this demonstration is far below the sound of the actual radio.  This is due to the high compression required to transfer the audio files across the Internet.)If you press the PTT button to transmit at any time, the radio will only transmit on the active frequency.

TX Icon

When the PTT is pushed to transmit, a small TX icon illuminates indicating that the radio is transmitting.  The radio will only transmit on the active frequency, if in the default screen, or the memory channel, if in memory mode.

RX Icon

As you may have noticed in the above demonstrations, when the radio receives a signal which breaks the squelch, the RX icon illuminates. 

LOW BATT Icon

The radio is configured to monitor the supply voltage and provides a warning if the voltage drops below or exceeds the specified limits. For instructions on how to configure the warning levels please refer to the Operating Manual.  For this demonstration, arbitrary values of  8 volts and 15 volts have been set for the minimum and maximum levels respectively.For demonstration, a knob has been included underneath the radio to adjust the supply voltage.  Click on the left side of the knob, where a minus - symbol shows, to reduce the voltage and click on the right side of the knob, where a plus + symbol shows, to increase the voltage.  If the voltage is reduced below the lower threshhold, the LOW BATT icon illuminates.  If the voltage is increased above the upper threshhold, the LOW BATT icon flashes.

Emergency Channel

To select the Emergency channel 121.5 press in both the VOL/SQH and the F/CH knobs simultaneously. On the demonstration, place the mouse between the VOL/SQH and F/CH knobs.  The cursor will change to a double arrow to indicate pressing both knobs simultaneously. Click the mouse to simulate the pressing of both knobs and the radio will go to the emergency channel. Click the FLIP/FLOP button to return the radio to normal operation.

Dual Watch

Dual watch allows the radio to listen on one frequency while periodically watching another for activity.  To turn Dual Watch on and monitor the active and standby frequencies, press the DUAL button.  An icon appears to indicate that Dual Watch is active and an audible pipping sound can be heard as the radio switches between frequencies. When a signal is received on the standby frequency, the MHz/KHz separator (-) will flash and the signal will be heard.  If a signal is received on the active frequency, the unit will immediately switch back to that frequency and begin receiving.  If the PPT is pressed, the radio will transmit on the active frequency only.Dual Watch has not yet been fully implemented in this simulator.

Mode Button

The MODE button on the top of the radio allows access to the extended functions of the radio.  While in any mode screen, the FLIP/FLOP button can be used to exit back to the default screen immediately.  The extended functions are as follows:

Intercom Volume

Pressing the MODE button once will display the Intercom Volume and allow adjustment via the VOL/SQH knob.  To adjust the Intercom Volume place your mouse just above the VOL/SQH knob where the plus + or minus - symbol is shown. Click the mouse to increase or decrease the Intercom Volume.Press the MODE button to move onto the next screen or press the FLIP/FLOP button to return to normal operation.

Intercom squelch

Pressing the MODE button twice will display the Intercom Squelch setting and allow adjustment via the VOL/SQH knob.  To adjust the Intercom Squelch place your mouse just above the VOL/SQH knob where the plus + or minus - symbol is shown. Click the mouse to increase or decrease the Intercom Squelch. Press the MODE button to move onto the next screen or press the FLIP/FLOP button to return to normal operation.

VOR ON and OFF

Pressing the MODE button three times will display the VOR and Extended Receive menu.  This menu cycles between the VOR and GENeral receive setting by pressing on the F/CH knob.  Press the F/CH knob to see the two screens. To activate the VOR receive extended range (108 MHz - 118 MHz), select VOR and, by turning the F/CH knob, select either on or off.  Place your mouse just above the channel knob where a plus + or minus - symbol will illuminate. Hover over the plus + symbol and click the mouse to simulate turning the knob clockwise. The VOR will show ON.  Hover over the minus - symbol and click to simulate turning the knob counter-clockwise.  The VOR will show off.To activate the GENeral receive extended range (137 MHz - 164 MHz), select GEN by pressing the F/CH knob and, by turning the F/CH knob, select either on or off.  Click on the F/CH knob to select GEN Receive. Place your mouse just above the channel knob where a plus + or minus - symbol will illuminate. Hover over the plus + symbol and click the mouse to simulate turning the knob clockwise. The GEN will show ON.  Hover over the minus - symbol and click to simulate turning the knob counter-clockwise.  The GEN will show off.Press the MODE button to move onto the next screen or press the FLIP/FLOP button to return to normal operation.

Volts

Pressing the MODE button four times will display the voltage being supplied to the radio.  Press the MODE button will move you back to the Intercom Volume and cycle through the menu again or press the flip/flop button to return to normal operation.Note: The simulator has a voltage selector below the radio and you can simulate low voltage or high voltage to the radio. Place your mouse over the left side of the knob and the minus - symbol should appear. Click to reduce the voltage to 7.5. You will notice the word LOW BATT is now displayed in the screen indicating a low battery situation. Hover your mouse over the knob again on the right hand side and the plus + symbol will appear.  Click to increase the voltage to 15.5.  The LOW BATT icon now flashes to indicate an overvoltage situation.

Memory functions

Memory channels are accessed by pressing the MEM button on the top of the radio.  11 preset memories are configured in the radio and cannot be modified.  These are memory channels 1 and 90 through 99.  1Channel 1 is designated as the Priority (Pri) or Emergency channel and is preset to 121.500 MHz.  Channels 90 through 99 have been preprogrammed to the NOAA weather channels for use in North America.Click on the MEM button to activate the memory channels.  The channel displayed will be the last memory channel viewed and that frequency will immediately become active for transmit and receive. Cycle through the memories by rotating the F/CH knob.In this demonstration, memory programming has not been implemented.