PRO-23
(200-0104)                 Specifications             Faxback Doc. # 39636


CHANNELS OF OPERATION:..................Four - as determined by any
                                     one of 4 crystals operating in
                                               the frequency range.

FREQUENCY RANGE:......................118 TO 136 MHz and 144 to 174
                                                                MHz

FREQUENCY COVERAGE:....................................VHF Aircraft
                                      6 MHz for maximum sensitivity
                                                  (127 MHz +/3 MHz)

SENSITIVITY:...................Better than 1 micro V at FM band and
                               Better than 2 micro V at AM band for
                                                      (S+N)/N=20 dB

SELECTIVITY:.........................................-6 dB +/-9 kHz
                                                    -50 dB +/15 kHz

MODULATION ACCEPTANCE:......................................+/7 KHz

I.F.:..........................................10.7 MHz and 455 kHz

FILTERS:................................10.7 MHz Crystal Filter and
                                             455 kHz Ceramic Filter

SQUELCH SENSITIVITY:..............Variable from less than 1 micro V

SCANNING SPEED:...................................6 channels/second

DELAY TIME:..........................................1 to 3 seconds

AUDIO POWER:.................................................150 mW

POWER REQUIREMENTS:.................+6V DC, four AA batteries, or a
                                   suitable power adapter (negative
                                                       ground only)
                                                     Current drain:
                                                  30 mA (squelched)
                                   100 mA (full volume, unsquelched

SEMICONDUCTOR.................................3 Integrated Circuits
COMPLEMENT:..................................10 Silicon Transistors
                                                          19 Diodes
                                     4 Light Emitting Diodes (LEDs)

SPEAKER:................................2" (5cm), 16-ohm, Permanent
                                               Magnet, dynamic type

ANTENNAS:.............................Telescopic and flexible types
                                    24-3/4" (63cm), 7-3/4" (19.5cm)

CRYSTAL REQUIREMENTS:.................Standard HC-25/u 3rd overtone

(LB/km-05/20/1997)

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