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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