158 % Tuned DRO & CRO 3

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Part	Manufacturer	Oscillator Type	Mounting Feature	Frequency Stability	Tuning Range	Maximum Supply Voltage	Maximum Supply Current	Output Power	Phase Noise	Power Variation	Physical Dimension	Minimum Supply Voltage	Maximum Operating Temperature	Minimum Operating Temperature	Offset Frequency	Manufacturer Series	Maximum Harmonics Level	Minimum Operating Frequency	Maximum Operating Frequency
M518049A-FREQ	Herley Industries	MECHANICAL TUNED DRO OSCILLATOR	CHASSIS MOUNT	158 %	15 MHz	18 V	125 mA	13 dBm	-85 dBc/Hz	1.5 dB	39.1mm x 30mm x 19.6mm	12 V	85 Cel	-54 Cel	10 kHz	M5180	-25 dBc	12000 MHz	18000 MHz
M512049A-FREQ	Herley Industries	MECHANICAL TUNED DRO OSCILLATOR	CHASSIS MOUNT	158 %	10 MHz	18 V	125 mA	13 dBm	-90 dBc/Hz	1.5 dB	45mm x 35.6mm x 23.1mm	12 V	85 Cel	-54 Cel	10 kHz	M5120	-25 dBc	8000 MHz	11999 MHz
M508049A-FREQ	Herley Industries	MECHANICAL TUNED DRO OSCILLATOR	CHASSIS MOUNT	158 %	5 MHz	18 V	150 mA	13 dBm	-105 dBc/Hz	1.5 dB	53.1mm x 39.1mm x 28.7mm	15 V	85 Cel	-54 Cel	10 kHz	M5080	-25 dBc	5000 MHz	7999 MHz

Tuned DRO & CRO

Tuned DRO (Dielectric Resonator Oscillator) and CRO (Crystal Resonator Oscillator) are types of microwave oscillators used in communication systems, radar systems, and other applications that require a stable and precise frequency source.

Tuned DROs use a dielectric resonator, which is a ceramic block with high dielectric constant, as the frequency reference. The dielectric resonator is excited by a high-Q circuit, such as a varactor diode, and the oscillator frequency is tuned by varying the voltage applied to the varactor diode. Tuned DROs have a high frequency stability and can generate frequencies in the range of several gigahertz.

CROs, on the other hand, use a quartz crystal resonator as the frequency reference. The crystal resonator is cut in a specific orientation and shape that allows it to vibrate at a specific frequency. The oscillator circuit is designed to amplify the crystal's natural vibrations, resulting in a stable and precise oscillator frequency. CROs have a lower frequency stability than DROs, but they can generate frequencies up to several hundred megahertz.