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Oscillators, VCOs, PLLs, Frequency Sources & Synthesizers
Manufacturers & Services

Tuning (Set) Screws

Here are a few companies that provide tuning (set) screws for cavity filters & oscillators:

These companies manufacture oscillators, frequency sources, and frequency synthesizers. Oscillators come in many varieties with many different frequency determining devices. Everything from low-tech LC (inductor-capacitor) tank circuits to crystals and YIG type oscillators are used. High and low accuracy and stability, frequency ranges, fixed frequency and variable frequency, are among the available options. If you are looking for test equipment that performs these functions, please click this link.

Crane Aerospace & Electronics - RF Cafe

Abracon | 949-546-8000 | Rancho Santa Margarita, CA

Ceramic, SAW, dielectric filters, VCXO, TCXO, clock oscillators, crystal resonators, magnetics, transformers, chokes, inductors.

Amplifonix (now Spectrum Microwave, now API Technologies) | 888-553-7531 | Philadelphia, PA

Hybrid amplifiers to 2 GHz and VCOs to 20 GHz. 750 datasheets to choose from with customizations requested. Industry standard packages, aggressive lead times and great customer service, "Cascade" system simulator software - FREE.

AXTAL GmbH & Co. KG | +49 (6261)939834

Mosbach | Baden-Wuerttemberg | Germany

Quartz crystals, oscillators, filters, Langasite resonators, piezo sensors, VCO, VCXO, TCXO, OCXO, DOCXO, GPS-OCXO.

Bliley Technologies | 814-838-3571 | Erie, PA

Precision crystal resonators and oscillators with product selection tools for quartz crystal and crystal oscillator, product family overviews, and engineering drawings available for online-viewing, or downloading in the popular ".PDF" format.

Bomar Crystal | 800-526-3935 | Middlesex, NJ

Quartz crystals, clock oscillators, VCXOs and TCXOs.

Centellax | 866-522-6888 Santa Rosa, CA

Amplifier modules, amplifier, switch & attenuator ICs frequency dividers, I/Q modulators, synthesizers, test & measurement products.

Cernex | 408-541-9226 | Sunnyvale, CA

Amplifiers, antennas, couplers, isolators, circulators, filters, diplexers, oscillators, noise sources, switches, phase shifters, transition & adapters, mixers, waveguide products, attenuators, terminations, detectors, subsystems.

Commutek Electronics Ltd | 732-698 9933 | East Brunswick, NJ

Quartz crystal devices and oscillators.

Connor-Winfield | 630-851-4722 | Aurora, IL

Crystals, VCOs, VCXOs, TCXOs, OCXOs, VCSOs, clock oscillators.

Crystek Crystals | 800-237-3061 | Ft. Myers, FL

Quartz crystals, XOs (clock oscillators), TCXOs (temperature compensated oscillators), VCXOs (voltage controlled oscillators), and TCVCXOs (temperature compensated voltage controlled oscillators), VCO line from 50 MHz to 3.5 GHz.

CTS Corporation | 574-293-7511 | Elkhart, IN

Bluetooth, ceramic duplexers, filters, terminators, DIP switches, modules (synthesizer, frequency translator, jitter attenuation, timing, clock generators, VCO's, high frequency VCXO's, VCSO's, IF filters), oscillators.

Crane Aerospace & Electronics - Microwave Solutions | West Caldwell, NJ 973-575-1300

RF, IF and millimeter-wave components, subsystems and systems for commercial aviation, defense, and space. Integrated assemblies include beamformers, oscillators, frequency converters and switch matrix systems, and amplifiers. Microwave circuit board substrates, non-magnetic capacitors. Space qualified circulators, isolators, mixers, couplers, power dividers, and much more.

dBm Corp | 973-709-0020 | Wayne, NJ

Noise generators, satellite link emulators, RF up/down converters, frequency synthesizers, attenuators.

Delta Electronics | 510-668-5100 | Fremont, CA

Switching power supplies, chip inductors, DC/DC converters, voltage regulator modules, EMI filters, voltage controlled oscillators (VCO), temperature controllers, thermal management products, video displays.

Ecliptek | 800-433-1280 | Costa Mesa, CA

Thru-hole, surface mount oscillators & crystals, metal, PCB, ceramic and plastic packages.

Elcom Technologies | 201-767-8030 | Rockleigh, NJ

Designs, develops, manufactures and markets state-of-the-art RF and microwave modules & sub-systems including frequency synthesizers, phase locked oscillators, fiber optic products, and custom modules, for commercial & defense applications.

Elisra Microwave Division | 972-3-6175273 | Israel

Microwave and millimeter-wave components DC-40 GHz: amplifiers, control devices, DLVA's, log amplifiers, multi-function modules, super-components, frequency sources and more.

EM Research | 775-345-2411 | Reno, NV

Manufactures the most complete lineup of high-performance standard and custom-designed signal sources in the microwave industry. We specialize in surface-mount and modular Phase-Locked Oscillators (PLO) and Frequency Synthesizers (PLL) from 4 MHz to over 30 GHz for commercial and military systems.

EMF Systems (now Spectrum Microwave, now API Technologies) | om814-237-5738 | State College, PA

VCOs, crystal oscillators, frequency synthesizers, coaxial resonators, phase locked oscillators, combline generators.

Emhiser Micro-Tech | 775-345-0461 | Verdi, NV

VCO packages - EVCO series & ELCO series.

Filtronetics | 816-231-7375 | Kansas City, MO

Leading supplier of custom IF, RF, Microwave, EMI(military) & Front End filters. Filter types include LC, crystal ceramic, SAW & microwave from DC to 10 GHz . Oscillators and crystals are available including TCXOs & VCXOs. Filtronetics Inc has been providing solutions to for 35 years and is ISO-9001:2000 certified. Please visit our web site or call.

FM Ingenierie (now ORMELABS) | +33 951486698 | France

Programmable attenuators, frequency synthesizers, RF filters, ISM-band ID systems, custom design, Smith Chart software.

Frequency Management | 800-800-9825 | Huntington Beach, CA

Crystals, inductors, clock, voltage controlled, temperature compensated, oscillators, monolithic crystal filters.

General Electronic Devices | 760-591-4170 | San Marcos, CA

VCOs, OCXOs, VCXOs, TCXOs, VCTCXOs, DROs, frequency translators, synthesizers, microwave amplifiers, clock oscillators and crystals.

General Microwave (now Herley, now Ultra Electronics) | 717-735-8117 | Lancaster, PA

Attenuators, modulators, power dividers, oscillators, synthesizers, phase shifters, switches.

Greenray Industries | 717-766-0223 | Mechanicsburg, PA

Crystal oscillators, OCXOs, TCXOs and VCXOs and VCOs.

Johanson Manufacturing | 973-334-2676 | Boonton, NJ

Capacitors for RF and microwave applications, fiber optic connectors, adapters, variable attenuators, ferrules, and sleeves for single mode and multimode applications, cable assemblies, termination kits.

Herley (now Ultra Electronics) | 717-735-8117 | Lancaster, PA

Attenuators, modulators, power dividers, oscillators, synthesizers, phase shifters, switches.

High Sierra Microwave | 530-644-3393 | Camino, CA

Designs and builds PLL signal sources, up/down converters, low noise amplifiers, and comb marker generators (weak signal sources). Also provides RF/microwave test/measurement services, such as phase noise measurements to 40 GHz.

Hittite Microwave Corp | 978-250-3343 | Chelmsford, MA

Amplifiers, attenuators, frequency multipliers, mixers, modulators, prescalers, switches, VCOs.

ILSI America | 888-355-4574 | Reno, NV

Frequency control products - crystals, data clock oscillators, VCXO, VCO, TCXO, TCVCXO, OCXO, crystal filter, saw filter synthesizers.

KVG Quartz Crystal Technology | +49-0-7263-648-126 | Neckarbischofsheim, Germany

Oven-controlled oscillators, low g sensitivity (LGS) technology, RF TCXOs and OCXOs, ceramic & crystal oscillators & filters. Surface mount & connectorized packages available.

Kyocera | Produces ceramic capacitors, piezo products and RF modules utilizing fine ceramic technologies, and crystal products using high purity quartz crystals.

Lotus Communication Systems | 888-236-8588 | Weston, MA

RF modular system components up to 20 GHz - amplifiers, filters, attenuators, limiters, oscillators, bias-Ts. COTS shielded enclosures w/SMA connectors for RF / electronics prototyping. Customization to your specification from prototype to production.

Lucix Corporation | 805-987-3677 | Camarillo, CA

Specializes in military compliant hardware, featuring rugged construction and hermetic housings, military airborne and ground environments, and MIL-STD screening and quality systems. Frequency converters, dielectric resonator oscillators, low noise and medium power 0.01 to 45 GHz power amplifiers 10 to 150 Watts UHF to Ka Band. Military and space environments, qualification, screening, analysis.

MCLI | 800-333-6254 | St. Petersburg, FL

Power dividers, couplers, isolators, circulators, waveguide components, oscillators, filters, hybrids, attenuators, switches, terminations, amplifiers.

Mercury United Electronics | 909-466-4027 | Rancho Cucamonga, CA

Since 1973, is a manufacturer of frequency control products including crystals, oscillators, low EMI spread spectrum clocks, TCXO's, VCTCXO's, VCXO's, OCXO's and monolithic crystal filters.

Micro Crystal | 847-818-9825 | Arlington Heights, IL

SMD crystals, AT cut, 10 kHz to 200 MHz crystals, OCXO, VCXO, ceramic SMD, 1 Hz to 160 MHz oscillators.

Micro Lambda Wireless | 510-770-9221 | Fremont, CA

Oscillators, filters, multipliers, drivers/control, PLOs, synthesizers.

Micronetics | 603-883-2900 | Hudson, NH

Test equipment, noise sources, voltage controlled oscillators, switches, limiters, phase shifters, attenuators.

Microwave Dynamics | 714-505-0998 | Tustin, CA

Phase locked or free running dielectric resonator oscillators (DRO), 2.8 GHz to 60.0 GHz, ovenized crystal oscillator 70-120MHz.

Mid-Atlantic RF Systems | 410-893-2430 | Forest Hill, MD

Hybrid, directional couplers, switches, RF power dividers, RF amplifiers, synthesizers, distribution assembly, contract RF assembly.

Miteq | 631-436-7400 | Hauppauge, NY

Amplifiers, mixers, frequency multipliers, passive power components, solid-state switches, attenuators, power dividers, RF and IF signal processing components, oscillators, frequency synthesizers, integrated multifunction assemblies, fiber optic products, up/downconverters, test translators, IF/video equalizers, redundancy switchover units, video modulators and modems.

MTI-Milliren Technologies | Newburyport, MA | 978-465-6064

Log, linear amplifiers, FM discriminators, IF limiters, VCXOs, OCXOs, TCXOs, small modular fixed frequency synthesizers.

MtronPTI | 800-762-8800 | Yankton, SD

Manufactures a complete range of frequency control products for commercial and military applications including crystal resonators, OCXOs, TCXOs, VCXOs, monolithic and discrete crystal filters, LC filters, and RF subassemblies.

Murata Electronics | 800-241-6574 | Smyrna, GA

Chip multi-layer (1.0 2.5 GHz), chip dielectric (2450 GHz, Bluetooth), surface mount capacitors, thermistors/resistors, coil (inductors)/delay lines, noise suppression products/EMI filters, resonators, piezoelectric sound components, coaxial connectors, antenna/duplexers, isolators/circulators, PLL modules, VCOs, TCXO, RF diode switches, DC-DC converters, sensors.

Nexyn Corp | 408-982-9339 | Santa Clara, CA

PLDROs from 3 to 23 GHz and PLO's from 300 MHz to 3 GHz, crystal references & phase locked references from 50 to 400 MHz, frequency synthesizers.

Norden Millimeter | 530-642-9123 | Placerville, CA

Microwave & Millimeter wave components from 500 MHz to 110 GHz, amplifiers, frequency multipliers, up/down converters, filters, oscillators, integrated assemblies.

Nova Engineering | 5513-642-3000 | Cincinnati, OH

NovaSource is a small, low-cost and easy-to-use programmable signal generator with a Windows-based user interface. NovaSource not only saves space on your lab bench or test rack, but also saves money in your capital equipment budget.

OmniYIG | 408-988-0843 | Santa Clara, CA

Band reject, bandpass Yig filters, Yig oscillators, Yig multipliers, comb generators, detectors, limiters.

Orban Microwave (OMP) | 915-590-0825 | El Paso, TX

Frequency converters, power amplifiers, low noise amplifiers, local oscillators, patch antennas, parabolic antennas and antenna arrays for WLAN, GPS, cellular, point to point, satellite and other applications.

Oscillatek (now Vectron) | 888-328-7661 | Hudson, NH

VCXOs (voltage controlled crystal oscillators), VCSOs (voltage controlled SAW oscillators) EMXO's & OCXOs (evacuated & oven controlled crystal oscillators), TCXOs (temperature compensated crystal oscillators), XOs (crystal oscillators), frequency translation & clock smoothing products, clock & data recovery products, timing modules, crystals, SAWs (surface acoustic wave filters).

Phase Matrix | 408-428-1000 | San Jose, CA

RF and microwave test and measurement instruments, subsystems, and components. Benchtop frequency counters, modular (VXI) pulsed frequency counters, and modular (VXI and PXI) synthetic instruments including down/up converters, synthesizers, and LOs for both commercial and military applications. Instrument-grade, fast-switching synthesizer modules. Narrowband and broadband microwave components, ranging from VCOs to complex custom-built assemblies for military instrumentation and telecommunications applications.

Poseidon Scientific Instruments | ++61 8 9430 6639 | Fremantle, Australia

Ultra low phase noise microwave oscillators, phase noise analyzers for 5 MHz to 18 GHz and above.

Praxsym | 217-897-1744 | Fisher, IL

Test equipment to determine best layout for wireless communications  systems.  PAMS (Portable Attenuation  Measurement System), PAMS-C (Commercial PAMS model), PathTrax, T-Meter broadband wireless power meter family, SEITS (Shielded Enclosure Isolation Test Set), single & dual output synthesizers, DDS, RF power management & monitoring.

Pro-Comm | 732-206-0660 | Brick, NJ

RF amplifiers, triode cavity oscillators, sources, transmitters, test equipment for cellular, military, medical, sterilization, for university and private labs. 600-3000 MHz, 500 W peak to 50 kW peak nominal. Design, manufacture and service RF drivers. Repair/refurbish medical RF drivers manufactured by SPC, MPD, Titan Beta, Micon, Siemens, SGS Thomson, Varian, Comtech, Pro-Comm.

Princeton Microwave Technology | 6609-586-8140 | Mercerville, NJ

Manufacturer of high quality oscillators and amplifiers for the military and telecommunications markets - DRO, PLDRO, coaxial resonator oscillators, Military | Satcom amplifiers, power dividers, phase noise measurement system, phase shifters, phase locked YIG frequency synthesizers.

Pulse Research Lab | 3310-515-5330 | Torrance, CA

Coupling and termination modules, RF power dividers & splitters, clock sources, RF switches & scanners.

Q-Bit (now Spectrum Microwave, now API Technologies) | 8888-553-7531 | Palm Bay, FL

Amplifiers, mixers and VCOs. 750 datasheets to choose from with customizations requested. Industry standard packages, aggressive lead times and great customer service.

Q-Tech | 3310-836-7900 | Culver City, CA

Complete crystal oscillator capability, ranging from standard clock oscillators to MCXO's.

QORVO | 833-641-3810 | Greensboro, NC

RFICs and packaged modules used in cellular networks and mobile phones, for wireless connectivity such as wireless LAN, GPS and Bluetooth, cable modems and cable TV infrastructure, applications including military radar. GaAs- and GaN-based power amplifiers, filters, switches, and FEMs used in smartphones, WiFi wireless infrastructure equipment.

Qualcomm | 8858-587-1121 | San Diego, CA

CDMA wireless technology, CDMA2000 (1X and 1x EV-DO) and WCDMA (UMTS) products.

Radian Technologies (now Spectrum Microwave) | specwave.com |8888-553-7531 | Palm Bay, FL

RF & Microwave Filters including cavity filters, lumped elements, ceramic filters, waveguide filters, tubular filters, suspended substrate, diplexers, triplexers.

QuinStar Technology | 310-320-1111 | Torrance, CA

Designs and manufactures millimeter-wave products for communication, scientific, and test applications including millimeter-wave products, microelectronic assembly, rapid prototyping, and mass customization. Amplifiers, receivers, Oscillators, switches, attenuators, circulators & isolators, filters, waveguide, antennas, and phase shifters, and transceiver & radar subsystems are offered.

Rakon | +64 9 573 5554 | New Zealand

GPS, general communication, microprocessor, SMD communication RSX, SMD communication UM, SMD microprocessor 49/SM, SMD microprocessor CSX, tuning fork crystals, clock oscillators, GPS TCXO's, integrated TCXO's & VCTCXO's, SMD clock oscillators, SMD TCXO's & VCTCXO's, temperature output oscillators, thru-hole TCXO's & VCTCXO's, voltage controlled crystal oscillators.

Raltron | 305-593-6033 | Miami, FL

Clock oscillators, crystals, crystal filters, OCXOs, TCXOs, VCOs, VCXOs programmable clocks, resonators, SAW devices, synchronization modules.

Ray Micro Devices | 7717- 266-8666 | York, PA

State-of-the-art and highly scalable design and fabrication solutions for Microwave, Telecom and Satellite Communications. RMD's expertise lies in the development of hardware products for the 10-40 GHz spectrum.

RF Monolithics | 8800-704-6079 | Dallas, TX

Provider of RF solutions and wireless telemetry systems.

RFMD (now QORVO) | 833-641-3810 | Greensboro, NC

RFICs and packaged modules used in cellular networks and mobile phones, for wireless connectivity such as wireless LAN, GPS and Bluetooth, cable modems and cable TV infrastructure, applications including military radar. GaAs- and GaN-based power amplifiers, filters, switches, and FEMs used in smartphones, WiFi wireless infrastructure equipment.

Roswin | 82-41-621-4450 | ChungNom, Korea

Products include phase locked loop modules, voltage controlled oscillators, low noise amplifiers, high power amplifiers, dielectric filters, LC filters & UDC modules.

RTx Technology Co., Ltd | +82-31-743-6275 | South Korea

Filters, duplexers, multiplexers (ceramic/cavity), VCOs & PLL synthesizers, isolators & circulators, up/down converters,  combiners & dividers, directional couplers, SAW devices, attenuators, terminators.

Salisbury Engineering (now Spectrum Microwave, now API Technologies) | 8888-553-7531 | Delmar, DE

Custom integrated microwave assemblies, tuners, synthesizers, filters, reference oscillators, harmonic generators. Call to discuss with an engineer your microwave component or supercomponent needs.

SigFox Systems | 06 07 74 66 01 | France

Software Definable Radio (SDR) designs. Long Range (20km) USB Bluetooth modules. High resolution 0 to 3 GHz Frac N synthesizers(1 Hz steps, better than -100 dBc | Hz @ 1 kHz), PA modules : 20 W Linear (60 W w/heat sink) 1.2/1.5GHz. LDMOS 400 to 1550 MHz in 7 to 9% BW @ 2 to 4 W.

Silicon Devices (UK) Limited | ++64 7 574 2894 | UK

Voltage controlled oscillator modules, ZigBee RF front-ends, ISM, UHF band transceivers, DAB radio receivers, RFID transponders, SRD modules, RFIC die, RF Power Amplifier modules, integer-n and fractional-n Phase locked loops, sigma delta PLL, obsolete RFICs and analog devices.

Sirenza Microdevices (now RFMD, now QORVO) | 336-664-1233 | Greensboro, NC

Designer & manufacturer of RF components serving existing and emerging wireless and wireline markets, offering a wide range of innovative RF solutions for transmitter, receiver and transceiver designs including amplifiers, transistors, mixers, modulators, VCOs, PLLs, demodulators, stripline couplers, transformers.

Sivers IMA AB | +46-8-7036800 | Kista, Sweden

VCOs, PLLs & Synthesizers, FMCW radar sensor front ends, millimeter wave transceiver products.

Suntsu Frequency Control | 9949-955-2195 | Newport Beach, CA

Quartz crystals, crystal oscillators, oven controlled crystal oscillators (OCXOs), temperature compensated crystal oscillators (TCXOs), voltage controlled crystal oscillators (VCXOs).

Synergy Microwave | 9973-881-8800 | Paterson, NJ

Attenuators, switches, couplers, DC block, demodulators, filters, frequency synthesizers, SAW oscillators, mixers, phase shifters, power dividers, transformers, VCOs, test fixtures.

Techtrol Cyclonetics | 717-774-2746 | New Cumberland, PA

Ultra low noise crystal controlled microwave sources, frequency multipliers, phase locked multipliers, and crystal controlled oscillators for military & commercial markets.

Tech Time, LTD | +972-4-6263891 | Israel

Clocks, VCXOs, OCXOs, TCXOs, crystals, frequency modules.

Teledyne Cougar | 408-522-3838 | Sunnyvale, CA

RF and microwave cascadable amplifiers and subsystems in 100 kHz to 12 GHz range. Detectors, limiters, limiting amplifiers, attenuators, AGC amplifiers, oscillators w/MMIC amplifiers.

Tellurian Technologies | 8847-934-4141 | Rolling Meadows, IL

Crystal units, clock oscillators, VCOs, VCXOs, TCXOs, VCTCXOs, crystal filters.

Torex Semiconductor | 949-261-2022 | Irvine, CA

Voltage detectors, power MOSFETs, voltage regulators, opamps, DC | DC Converters, CMOS logics, charge pump, inverter ICs, oscillators, temperature sensors, PIN diodes.

Trak Microwave | 888-283-8444 | Tampa, FL

Attenuators, circulators, isolators, comb generators, control devices, couplers, delay line filters, GPS time & frequency, hybrids, IQ mod & demod, mixers, multipliers, oscillators, phase shifters, splitters & combiners, synthesizers, transformers.

Universal Microwave Corp (now RFMD, now QORVO) | 8877-862-9873 | Tempe, AZ

VCOs and synthesizers.

Valpey Fisher Corp | 800-982-5737 | Hopkinton, MA

Quartz crystals, XOs, VCXOs, OCXOs, high reliability, COTs oscillators.

Vectron International | 888-328-7661 | Hudson, NH

Crystals, oscillators, SAW filters.

VN-Technology | +972-46260505 | Or-Akiva, Israel

High precision timing, frequency control and synchronization products including clock oscillators, VCXOs, FCXOs, TCXOs, OCXOs, synthesizers and timing modules.

Wenzel Associates | 5512-835-2038 | Austin, TX

Crystal oscillators, RF modules, synthesizers.

Werbel Microwave (power dividers, couplers)
PCB Directory (Manufacturers)

ConductRF Phased Matched RF Cables - RF Cafe

TotalTemp Technologies (Thermal Platforms) - RF Cafe