PRO-22 (200-0103) Specifications Faxback Doc. # 39631 CHANNELS OF OPERATION:..........Six-as determined by any one of 6 crystals operating in the frequency range FREQUENCY RANGE:.............................30 to 50 MHz, 118 to 136 MHz, 144 to 174 MHz, 450 to 512 MHz FREQUENCY COVERAGE:..................VHF Lo 6 MHz for maximum sensitivity (40 MHz +/- 3 MHz) VHF Aircraft 6 MHz for maximum sensitivity (127 MHz +/- 3 MHz) VHF Hi 8 MHz for maximum sensitivity (153 MHz +/- 4 MHz) UHF.........................................30 MHz for maximum sensitivity (480 MHz +/- 15 MHz) SENSITIVITY:.............Better than 1 microV at FM Band and better than 2 microV 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 microV at FM Band and less than 2 microV at AM Band SCANNING SPEED:.........................................6 Channels/seconds DELAY TIME:.................................................1 to 3 seconds AUDIO POWER:.........................................................200mW POWER REQUIREMENTS:.............................+6V DC, four AA batteries, or a suitable adapter (negative ground only) Current drain:........................................45mA (Squelched) 130 mA (full volume unsquelched) SEMICONDUCTOR COMPLEMENT:............................5 Integrated Circuits 16 Silicon Transistors 19 Diodes 6 Light Emitting Diodes (LED's) SPEAKER:.................2" (5 cm), 16-ohm, Permanent Magnet, dynamic type ANTENNAS:.....................................Telescopic and flexible type CRYSTAL REQUIREMENTS:........................Standard HC-25/U 3rd overtone (br/km-05/20/1997)