Part #: 063-1007-00

Model: KTR-993






HF Transceiver

Part Number :




  • Receiver/Exciter used with KHF-990 Helicopter HF system
  • Used in conjunction with KAC-992 probe/antenna coupler and KFS-594 control
  • Contains receiver/exciter, RF power amplifier, lowpass filters, and control circuitry necessary for generation of SSB and AME signals
  • Provides direct access to frequencies from 2 to 30 MHz (280,000 frequencies)
  • Designed to be fast and accurate with fast warmup oven controlled reference oscillator
  • Capable of 150 watts PEP output
  • Two modes of operation - USB an AME - are standard; Lower Sideband Mode can be enabled for applications where its use is authorized
  • User-programmed channel can be preset to operate as semi-duplex or simplex
  • 28 Volt operation



Size: 12.00"W x 4.3"H x 11.20"L Weight: 12.9 lbs.
Frequency Range: 2,000 to 29,999.9 kHz in 100 Hz increments (280,000 frequencies) Temperature Range: -55C to +70C
Environmental: F2/A/JMNOY/EWXXXSA/BZ/A/BZ/A Altitude: to 55,000 feet
TSO Compliance: FAA TSO C-31c and C-32c Frequency Stability: +- 20 Hz
Transmitter RF power output (SSB): 150 watts PEP Transmitter RF power output (AM): 37.5 watts average
Electrical: +28VDC +-15%; 16A pk transmit/1.0A Receive Duty cycle: 100% Continuous in SSB mode; 50% 3 min. Transmit, 3 min. Receive
Receiver Sensitivity (SSB): Receiver Sensitivity (AM):    
Receiver Input Impedance: 50 Ohms nominal Receiver Freq. Stability: +-20 Hz
Part Number: Description:
063-1007-00 HF Transceiver


- HF Transceiver

NSN: 5821-01-324-7724

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.

In most cases, a Supplemental Type Certificate is not required for the installation of an HF system. Major changes or alterations to an aircraft may include those which affect weight, balance, structural aspects, reliability, operational characteristics, airworthiness characteristics, etc. Some major alterations can be performed using the FAA Form 337 with approved data. This approved data can be in the form of engineering data with a FAA designee approval (i.e. DER, DAR). The DER or DAR then issues an FAA Form 8110 which is considered approved data adequate to proceed with the installation.

HF installations in the USA are installed and approved in the method detailed above. STCs are not required for almost all HF installations since the change to the existing aircraft Type Certificate (TC) is not so intensive as to require one.