Specifications - Flightcom F20 Installation & Operation Manual

Additional Accessories
You may purchase separately the following accessories:
• Push-To-Talk (PTT) Switch (part number: 103-0604-00)
• Replacement Foam Ear Pads (part number: 310-0741-00)
• Replacement Ear Plugs (part number: 103-0004-00)
• Mic Muff and O-ring, small (qty. 3) (part number: 103-0607-21)
Installation/Operation Instructions
To set-up the headset:
1.Insert the larger headset plug into the aircraft or intercom headphone or
phone jack.
2.Insert the smaller headset plug into the aircraft or intercom microphone or
mic jack.
3.If you are using a stereo intercom, set the headset stereo/mono switch (on the
side of the headset opposite the microphone boom) to S; if you are using a
mono intercom, set the headset stereo/mono switch to M.
4.Adjust the headband sliders and microphone boom for proper fit and comfort.
5.Place the microphone 0-1/8 inch from your lips at the side of your mouth with
the flat side facing outward.
6.Rotate the headset volume control (on the side of the headset opposite the
microphone boom) fully clockwise to the maximum position.
Volume control
Stereo/Mono switch
Push-To-Talk Switch
If the aircraft does not have a built-in push-to-talk switch, you must install a portable
PTT switch to use the radio.
Master Gain Control
The master gain control, located in the aircraft radio, should be optimized by a com-
petent avionics technician whenever adding a new model microphone to the system.

Specifications

Headset
Sensitivity
Frequency Response
Impedance
Weight
Shielding
Microphone
DC Bias Supply
Source Resistance
Output Voltage
Frequency Response
Max. Ambient Noise Level
Weight
CAUTION: Be certain the jacks installed in the aircraft are wired correctly to accom-
modate the headset plug configuration. Bias voltages supplied to the microphone
must come from voltage and resistance ranges specified above. Voltages supplied
from other sources can cause microphone failure. The microphone audio signal is
present between the ring and barrel of the microphone plug; the tip is reserved for
the transmit keyline.
97 dB re .0002 microbar @ 1000 Hz, 1 mW
50-17,000 Hz
150 ohms
Mic HI shielded by mic ground
8 to 16 volts, not polarity sensitive
220 to 2200 ohms
370 mV @ 114 dB spi re .0002 microbar
300-5000 Hz
110 dB spl re .0002 microbar
4.6 oz.
0.2 oz.