Crystek manufactures a broad line of frequency control devices.
Frequency Sources and Regulators
Each PRO is a fixed frequency portable crystal generator!
FeaturedFort Myers, FL - September 18, 2015 - Crystek's CVCO55CC-2275-2290 CRO (Coaxial Resonator Oscillator) operates from 2275 to 2290 MHz with a control voltage range of 0.5 V to 4.5 V. This CRO features a typical phase noise of -115 dBc/Hz @ 10 kHz offset and has excellent linearity. Output power is typically +4.5 dBm.

Engineered and manufactured in the USA, the model CVCO55CC-2275-2290...
Crystek Corporation® has been providing frequency products since 1958, including quartz crystals, XOs (Clock Oscillators), TCXOs (Temperature Compensated Crystal Oscillators), VCOs (Voltage Controlled Oscillators), and VCXOs (Voltage Controlled Crystal Oscillators). Crystek operates two divisions dedicated to frequency control. Crystek Crystals is dedicated to the development and manufacture of frequency products using quartz-based resonators. Crystek Microwave develops frequency control and support products for the microwave industry. Other products include: PLL (Phase Lock Loop) Synthesizers, RedBox VCOs, RF Coaxial Cable Assemblies, RF Cable Connectors, Bulk RF Coaxial Cable, RF Power Detectors, Filters, Attenuators, DC Blocks, Passive Doublers, RFPRO (Pocket Reference Oscillators), Connectorized Amplifiers, VCO Evaluation Boards, RF Lab Kits, SAW based Clock Oscillators and VCSOs, and Power Regulators.