KR 87 ADF

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Alimentacion: 11 a 33Vdc

FEATURES
  • Digitally tuned solid state automatic direction finder which provides bearing information to stations in the frequency range of 200 KHz to 1799 KHz and which also provides audio reception to enable pilot to identify stations
  • Used with KA-44B combined loop/sense low profile ADF antenna OR KA-44 blade antenna
  • Can be used with single needle KI-227 ADF indicator or dual needle KI-228 indicator (both indiactors available with manual or slaved compass cards)
  • May be interfaced to King KI-229 or KNI-582 RMIs
  • Can be interfaced with other 3-wire RMI indicators by way of KDA-692 RMI adapter
  • Models available with single or dual indicator driving capability (see table below)
  • Models available with ADF Superflag output for use with EFIS systems (see table below)
  • Internal timer for flight time and elapsed time which proves valuable for non-precision timed approaches, fuel management, dead reckoning navigation
  • Automatic dimming circuit adjusts the brightness of the display to compensate for changes in the ambient light level
  • Coherent detection design rejects unwanted frequency interference, achieves significantly greater range and has less suspectiblility to engine noise, static and atmospheric interference
  • Flip-flop frequency display allows to switch between pre-selected "standby" and "active" frequencies
  • Operates on any voltage from 11-33 VDC with 12 watts power consumption
  • Models available for 28 volt use only (see table below)
  • Models available with 5 volt display lamps (see table below)
  • Models available with standard or shiny display lens (see table below)
  • Models available with clear or blue display light (see table below)
  • Models available with backlit nomenclature (see table below)
  • Forced air cooling not required
  • TSO'd
SPECIFICATIONS
Size: 6.32"W x 1.35"H x 10.73"L Weight: 2.9 lbs.
TSO Compliance: TSO C41c Class A, DO-160 Env. Cat A1D1/A/SKP/XXXXXX/ZBABA Applicable Documents: RTCA DO-142
Frequency Range: 200KHz to 1799KHz in 1 KHz increments Receiver Selectivity: 6dB bandwidth: +-2 KHz max off center frequency; 80dB bandwidth: +-7 KHz max off center frequency
Bearing Accuracy: +- 3 degrees from 70 uV/m to 0.5 V/m RF input signal level Power Requirements: 11 to 33 VDC, 12W typical
Temperature Range: -20 to +55C Altitude Range: Up to 50,000 feet
Receiver Senstivity: 150uV/m max for s+n/n = 6dB Spurious Response: 80dB down +-12KHz from center frequency
Indicator Drive: DC sine and cosine voltages 4.5 +- 3.0VDC at 150mA max Audio Output: 50mW across 500ohm
SEE ALSO KI-227, KI-228, KA-44, KA-44B

KR-87
Part Number ADF Receiver Description
066-1072-00 Standard lens, Single Indicator Use, 14/28V lamps, clear lighting
066-1072-01 Shiny lens, Single Indicator Use, 14/28V lamps, clear lighting
066-1072-02 Standard lens, Dual Indicator Use, 14/28V lamps, clear lighting
066-1072-03 Shiny lens, Single Indicator Use, 14/28V lamps, clear lighting
066-1072-04 Standard lens, Single Ind Use, Superflag output, 14/28V lamps, clear lighting
066-1072-05 28V only, Std lens, Dual Ind Use, Superflag output, 14/28V lamps, clear lite
066-1072-06 Standard lens, Single Indicator Use, Superflag output, 5V lamps, blue lighting
066-1072-07 Standard lens, Single Indicator Use, Superflag output, 5V lamps, blue lighting
066-1072-14 Std lens, Single Ind Use, Superflag, 14/28V lamps, clear lite, backlit nomen - this P/N also used for SC+ version - see below
066-1072-14 Silver Crown Plus version
066-1072-15 28V, Std lens, Dual Ind, Superflag, 14/28V lamps, clear lite, backlit nomen
066-1072-17 Std lens, Single Ind Use, Superflag, 5V lamps, blue lite, backlit nomenclature