SPECIFICATIONS
Operating Voltage
6.5-24 VDC
Operating Current
3 mA
PTT Output Current
250 mA
Audio Output Level
0-750 mV(rms)
Audio Output Impedance
1 K or 50 K
Twist
0-3 dB
Max Tone Distortion
2%
Interkey Time (Auto PTT)
2 seconds
Adjustment Pots
1 Turn
Operating Temperature
-30° to +60°C
Dimensions with Bezel Frame (standard)
2.4" x 1.9" x 0.4"
Dimensions without Bezel Frame
2.0” x 1.5" x 0.25"
GENERAL INFORMATION
The TTE-7 is a 12-digit DTMF dial encoder with snap-dome keypad in a mountable bezel frame. The TTE-7 will
automatically assert the PTT output when a button is pressed and hold the PTT output for 2 seconds for
subsequent digits to follow. The DTMF tones are generated out the HI Z or LO Z outputs for as long as the key is
pressed.
The following diagram shows the DTMF tone pairs generated when a particular digit is pressed. For example
when the 1 digit is pressed the TTE-7 will generate 697 Hz and 1209 Hz simultaneously.
1
2
3
4
5
6
7
8
9
*
0
#
697 Hz
770 Hz
852 Hz
941 Hz
1209
Hz
1477
Hz
1336
Hz
2
