Part #: 066-1077-00

Model: KDF-806






ADF Receiver

Part Number :




  • Coherent detection design for greater range
  • Used with KFS-586 and KFS-586A flip-flop frequency selector which displays active and standby frequencies in gas discharge numerics.
  • Models available (-01) with ADF Superflag output for use with EFIS
  • 11-33 VDC
  • TSO'd
  • Service Bulletin available to convert -00 to -01- (This information is on SEA Intranet site only- not on actual Internet for customer use)



Size: 2.00"W x 5.00"H x 10.00"L Weight: 3.5 lbs.
Frequency Range: 190 - 1799 kHz (optional jumper selectable 2182 marine band emergency frequency) Temperature Range: -55C to +70C
Audio Output: 100mW across 500 ohms Altitude: to 50,000 feet
TSO Compliance: C41C, Class A, Env. Cat A2D2/A/MNO/EXXXSABAAA Applicable Documents: RTCA Document DO-142
Design: All solid-state, electronically tuned by single-crystal and single chip Large Scale Integrated (LSI) digital frequency synthesizer Audio Output: Adjustable up to 100mW into 500 ohm load
Power Requirements: 26 VAC Output to Indicator: DC sine and cosine voltages
Part Number: Description:
066-1077-00 Without ADF Superflag output (can be added with factory service bulletin)
066-1077-01 Current production model with ADF Superflag output


Serial # 5994
Condition OH
Mods 1-3
Tag Date 05/30/24
Shop Southeast Aerospace Inc.
Warranty 6 Months
- ADF Receiver

NSN: 5821-01-411-8512

Price Condition Status
- ADF Receiver

NSN: 5895-01-276-4233

Price Condition Status

Click on a question below to see the answer. If you have a question about this model that is not answered below, please contact

In relation to NE (New) parts, many OEMs change their prices and availability without any notice to dealers or the industry. Therefore, through the REQUEST or RFQ indication, we ask that customers contact us for the most accurate price and availability.

In relation to SV & OH parts, the used parts aftermarket in the aviation industry is not an infinite supply. It is a dynamic, constantly changing market that is significantly affected by and susceptible to highs and lows in supply and demand. Therefore, although we attempt to, at times, we are unable to predict the exact moment when an item may be available. Once again, through the REQUEST or RFQ indication on our website, we ask that customers contact us for the most current and accurate price and availability.

No, common ADF systems such as the Bendix/King KR-87, KDF-806 and Collins ADF-60A, ADF-650A utilize their own unique antennas within the systems (i.e. KA-44B, ANT-60A/B, ANT-650A respectively). In addition, in most cases, these antennas are different sizes and have different hole patterns from each other.
None, they represent the same unit. Original King Radio part numbers were 9 digits. For example, 066-3056-01. During the Bendix and King merger (i.e. Bendix/King), a new part numbering system was created that converted these 9 digit part numbers to 12 digits. Therefore, 066-3056-01 became 066-03056-0001. Despite this numbering change, units that were originally from the King Radio design still have the 9 digit part number format on the unit dataplate. The 12 digit format for King units appears to be used for catalog and internal Honeywell purposes only. Therefore, any unit that has a zero in its third to last number (i.e. XXX-XXXX-X0XX) has a 9 digit part number (i.e. XXX-XXXX-XXX) on its dataplate / ID Plate.
In January 1989 Bendix/King changed from a nine digit to a twelve digit part numbering system. The new, larger 12 digit numbers allowed for the inclusion of software version into the last two digits of the part number for certain units in which software changed frequently such as EFIS and TCAS processors. Therefore, the two digits immediately preceding the software version indicate the hardware version of the unit.

Different software versions imply different operational features and/or interface capabilities and software modifications imply software repairs (bug fixes) to insure proper operation of these features and interfaces. Software version upgrades frequently require hardware modifications to the unit. Such hardware modifications accompanying software version upgrades do not necessarily change the hardware version of the unit.

Negotiating the exchange price of a unit only limits the allowable repair cap for the core unit. Southeast Aerospace's exchange transactions are based on the return of economically repairable core unit. Once the core is received and evaluated, the core repair cost incurred by SEA cannot exceed 75% of the original exchange price. That is, it cannot cost SEA more than 75% of the original OH/SV exchange price collected from the customer. Therefore, when and if an SEA exchange price is discounted, there is a risk that additional charges may be assessed once the core is returned and evaluated.