KR 87
- 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, with ADF Superflag output for use with EFIS systems
- 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 V with 12 W power consumption
- Models available for 28V use only, with 5V display lamps, with standard or shiny display lens, with clear or blue display light , with backlit nomenclature
- Forced air cooling not required
- TSO'd
| DIMENSIONS |
6.32"W x 1.35"H x 10.73"L |
|
WEIGHT |
2.9 lbs |
|
FREQUENCY RANGE |
200kHz to 1799kHz in 1 kHz increments |
|
RECEIVER SELECTIVITY |
6dB bandwidth: about 2 KHz max off center frequency; 80dB bandwidth: about 7 KHz max off center frequency |
|
BEARING ACCURACY |
about 3 degrees from 70 uV/m to 0.5 V/m RF input signal level |
|
POWER REQUIREMENTS |
11 to 33 V, 12W typical |
|
TEMPERATURE RANGE |
-20 to 55°C |
|
ALTITUDE |
up to 50 000 feet |
|
RECEIVER SENSTIVITY |
150uV/m max for s n/n = 6dB |
|
SPURIOUS RESPONSE |
80dB down about 12KHz from center frequency |
|
INDICATOR DRIVE |
DC sine and cosine voltages 3.0VDC at 150mA max |
|
AUDIO OUTPUT |
50mW across 500ohm |
|
APPLICABLE DOCUMENTS |
RTCA DO-142 |
|
TSO COMPLIANCE |
TSO C41c Class A, DO-160 Env. Cat A1D1/A/SKP/XXXXXX/ZBABA |
| PART NUMBER | 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 |
Exclusively for the CNI-5000 radio package, Standard lens, Single Indicator Use, Superflag output, 5V lamps, blue lighting, No Faceplate |
|
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 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 |