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The Elecraft XG50 is a simple 49.380 MHz signal source specifically designed for use with the KX3 Extended VFO Temperature Compensation Procedure. Powered from a 12VDC source, the XG50 produces a stable - 36 dBm signal.
Note: This product is a kit which may involve building the product by selecting individual components, soldering them to the circuit board, winding toroids, installing LEDs and displays, calibrating circuits to meet specified performance levels. 



  • RF Output Level:  10mv p-p (-36dBm) into 50 ohms
  • Frequency: 49.380 MHz, ±5 ppm
  • Stability: Approximately ± 2 Hz†
  • Current Drain: Less than 25ma @ 12 VDC
  • Operating Voltage: 8–15 VDC
  • Size:  PC board: 2.5"L x 1"W; 3.3 "L including BNC connector









      Q: Is the XG50 useful only with the KX3?

      A: The XG50 was designed to facilitate the KX3 Temperature Compensation Procedure.  This signal generator acts as the reference with suitable stability to complete the steps.  It removes the need to purchase an expensive, lab-grade signal generator.

      Q: If I already have a lab-grade signal generator that meets the stability specifications, can I use it instead of the XG50?

      A: Yes.  Elecraft's policy is to produce simple, easy to use test products to add value to your radio and to add to your experiences of owning and operating the radio.



      XG50 SIGNAL SOURCE KIT Quantity Price
      XG50 XG50 Signal Source Kit $49.95