The KR 87 ADF Receiver is a dependable and TSO approved unit that offers accurate bearing-to-station information on the 200 MHz to 1799 MHz frequency range and includes ADF, ANT, and BFO tuning modes, as well as audio output for station identification and monitoring AM broadcasts. The KR 87 incorporates an advanced coherent detection design rejects unwanted frequency noise and achieves much greater range while remaining less susceptible to engine noise, static and atmospheric interference. The flip-flop frequency display allows you to switch between pre-selected standby and active frequencies with the touch of a button.

This ADF receiver includes standard lens, single indicator use, superflag output, clear display lighting.

• Flip-flop frequency display
• Switch between pre-selected standby and active frequencies
• Non-volatile memory circuit (battery not required to store frequencies)
• ADF, ANT, and BFO tuning modes
• AM broadcast identification and monitoring audio out

SPECIFICATIONS
Power Required	11-33 VDC at 12 watts
Maximum Altitude	50,000 ft.
Weight	KR 87: 3.2 lbs. (1.45 kg) KA 44B: 2.8 lb. (1.27 kg) KI 228: 0.91 lbs. (0.41 kg)
Width	KR 87: 6.31 in. (16.03 cm) KI 228: 3.25 in. (8.26 cm)
Height	KR 87: 1.38 in. (3.51 cm) KA 44B: 1.8 in. (4.57 cm) from fuselage KI 228: 3.25 in. (8.26 cm)
Length	KR 87: 11.28 in. (28.65 cm) KI 228: 4.68 in. (12.38 cm)
TSO	C41c
DO 160ENV	A1D1/A/SKP/XXXXXX/ZBABA