The RB5000 Calibrator is a marker generator that provides a simple and accurate way to calibrate HF radio receivers operating from 25 kHz to 100 MHz. A TCXO (Temperature Compensated Crystal Oscillator) and frequency divider chain provides harmonic rich switch selectable outputs at 500, 250, 100, 50 and 25 kHz settings. A short wire "antenna" is connected to the RB5000 Calibrator RF output and can be positioned to couple the RB5000 Calibrator to the receiver.

The RB5000 Calibrator is a high accuracy marker generator, it:

• Uses TCXO from the RB7500 series.
• Has a frequency accuracy of 2.5 PPM (+ 9 Hz at 3.5 MHz) or (+ 75 Hz at 30 MHz).
• Possesses switch selectable markers at 500 kHz, 250 kHz, 100 kHz, 50 kHz or 25 kHz and is usable beyond 100 MHz.
• The asymmetric waveform provides odd and even harmonics.
• Is an excellent way to calibrate receivers without digital readouts or to check radios that do have digital readouts.
• Operates from 5 "AA" cell batteries that mount inside the unit for a total voltage of 7.5 VDC (batteries included).

Price $69.95 U.S.