Narco's ADF-841 Features:

* Solid State, Micro Processor Controlled

* Crystal Clear Audio

* Combined Elapsed and Flight Timers

* High Legibility, Gas Discharge, Digital Display with Automatic Dimming

* Combined Loop Sense Antenna

* Indicator with Rotatable Azimuth Card

* "Flip-Flop" Frequency Transfer

* "Keep-Alive" Frequency Memory

* TSO'D

* Made in the USA

Performance Specifications:

General Dimensions

Receiver

Width: 6.25"

Height: 1.5"

Depth: 11"

(158.8mmx38.1mm.280.6mm)

Indicator

Width: 3.25"

Height: 3.25"

Depth: 4.5"

(82.6mmx114.3mm)

Combined Loop/Sense Antenna

Base (teardrop): 6"x11.5"

(152.4mmx292.1mm)

Height 2.5"

(63.5mm)

Weight

Receiver: 2.70 lbs. (1.20 Kg)

Tray: 0.7 lbs. (0.30 Kg)

Indicator: 0.75 lbs. (0.34 Kg)

Combined Loop/

Sense Antenna: 3.60 lbs. (1.60 Kg)

Power Requirements

11-32 VDC

1.0 Amp @ 13.75 VDC

0.5 Amp @ 27.50 VDC

Receiver

Frequency Range 200 kHz to 1799 kHz in 1 kHz steps

Sensitivity

a) ADF Mode: 150uV/meter signal for 6 db S + N/N

b) Antenna Mode: 70 uV/meter signal for 6 db S - N/N

Selectivity

6 db bandwidth + 2 kHz max.

80 db bandwidth + 7 kHz max.

Spurious Response

80 db min @ + 12 kHz from center frequency

Bearing Accuracy

+3 degrees from 70 uV to 0.5 V/M

Audio Input

Receiver audio low impedance output 50mW into 500 ohms

Receiver audio high impedance output 25mW into 500 ohms

Alarm audio low impedance output 50mW into 500 ohms

Alarm audio high impedance output 25mW into 500 ohms

TSO COMPLIANCE

ADF Receiver TSO C41c CLASS A

ADF Indicator TSO C41c CLASS A

Loop Sense Antenna TSO C41c CLASS A