Tuning (Set) Screws
Here are a few companies that provide tuning (set) screws for cavity filters &
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.
Abracon | 949-546-8000
| Rancho Santa Margarita, CA
Ceramic, SAW, dielectric filters, VCXO, TCXO, clock
oscillators, crystal resonators, magnetics, transformers, chokes, inductors.
(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
oscillators, filters, Langasite resonators, piezo sensors, VCO, VCXO, TCXO, OCXO,
| 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
| 800-526-3935 | Middlesex, NJ
Quartz crystals, clock oscillators, VCXOs and
| 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.
Ltd | 732-698 9933 | East Brunswick, NJ
Quartz crystal devices and
| 630-851-4722 | Aurora, IL
Crystals, VCOs, VCXOs, TCXOs, OCXOs, VCSOs, clock
| 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.
| 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.
| 973-709-0020 | Wayne, NJ
Noise generators, satellite link emulators, RF up/down
converters, frequency synthesizers, attenuators.
| 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.
| 800-433-1280 | Costa Mesa, CA
Thru-hole, surface mount oscillators & crystals,
metal, PCB, ceramic and plastic packages.
| 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 &
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.
| 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.
(now Spectrum Microwave, now API Technologies) | om814-237-5738 | State College,
VCOs, crystal oscillators, frequency synthesizers, coaxial resonators, phase
locked oscillators, combline generators.
| 775-345-0461 | Verdi, NV
VCO packages - EVCO series & ELCO series.
| 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.
(now ORMELABS) | +33 951486698 | France
Programmable attenuators, frequency synthesizers,
RF filters, ISM-band ID systems, custom design, Smith Chart software.
Management | 800-800-9825 | Huntington Beach, CA
clock, voltage controlled, temperature compensated, oscillators, monolithic crystal
General Electronic Devices
| 760-591-4170 | San Marcos, CA
VCOs, OCXOs, VCXOs, TCXOs, VCTCXOs, DROs, frequency
translators, synthesizers, microwave amplifiers, clock oscillators and crystals.
(now Herley, now Ultra Electronics) | 717-735-8117 | Lancaster, PA
modulators, power dividers, oscillators, synthesizers, phase shifters, switches.
| 717-766-0223 | Mechanicsburg, PA
Crystal oscillators, OCXOs, TCXOs and VCXOs
| 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.
(now Ultra Electronics) | 717-735-8117 | Lancaster, PA
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.
| 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
low g sensitivity (LGS) technology, RF TCXOs and OCXOs, ceramic & crystal oscillators &
filters. Surface mount & connectorized packages available.
| Produces ceramic capacitors, piezo products and RF modules utilizing fine ceramic
technologies, and crystal products using high purity quartz crystals.
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.
| 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,
MCLI | 800-333-6254
| St. Petersburg, FL
Power dividers, couplers, isolators, circulators, waveguide
components, oscillators, filters, hybrids, attenuators, switches, terminations,
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.
| 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.
Wireless | 510-770-9221 | Fremont, CA
Oscillators, filters, multipliers,
drivers/control, PLOs, synthesizers.
| 603-883-2900 | Hudson, NH
Test equipment, noise sources, voltage controlled
oscillators, switches, limiters, phase shifters, attenuators.
| 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.
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.
| Newburyport, MA | 978-465-6064
Log, linear amplifiers, FM discriminators, IF
limiters, VCXOs, OCXOs, TCXOs, small modular fixed frequency synthesizers.
| 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
| 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.
| 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
| 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.
| 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
408-988-0843 | Santa Clara, CA
Band reject, bandpass Yig filters, Yig oscillators,
Yig multipliers, comb generators, detectors, limiters.
(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.
(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
| 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.
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.
| 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,
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
Lab | 3310-515-5330 | Torrance, CA
Coupling and termination modules,
RF power dividers & splitters, clock sources, RF switches & scanners.
Spectrum Microwave, now API Technologies) | 8888-553-7531 | Palm Bay, FL
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.
| 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.
| 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.
switches, attenuators, circulators & isolators,
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.
305-593-6033 | Miami, FL
Clock oscillators, crystals, crystal filters, OCXOs,
TCXOs, VCOs, VCXOs programmable clocks, resonators, SAW devices, synchronization
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.
| 8800-704-6079 | Dallas, TX
Provider of RF solutions and wireless telemetry
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.
(now Spectrum Microwave, now API Technologies) | 8888-553-7531 | Delmar, DE
integrated microwave assemblies, tuners, synthesizers, filters, reference oscillators,
harmonic generators. Call to discuss with an engineer your microwave component or
| 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.
(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
(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).
| 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.
| 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.
| 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.
| 8847-934-4141 | Rolling Meadows, IL
Crystal units, clock oscillators, VCOs,
VCXOs, TCXOs, VCTCXOs, crystal filters.
| 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.
| 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,
| 888-328-7661 | Hudson, NH
Crystals, oscillators, SAW filters.
| +972-46260505 | Or-Akiva, Israel
High precision timing, frequency control and
synchronization products including clock oscillators, VCXOs, FCXOs, TCXOs, OCXOs,
synthesizers and timing modules.
| 5512-835-2038 | Austin, TX
Crystal oscillators, RF modules, synthesizers.