Shanghai Worldbest Magway Magnetic Components Co., Ltd.,
Manufacturer of high frequency with low power loss and high frequency with high initial permeability cores.
http://www.worldbest-magway.cn

APS Dynamics, Inc.
Information on APS Dynamics, manufacturer of ELCTRO-SEIS Long Stroke Shakers for Modal Testing and Low Frequency Calibration with DUAL-MODE Voltage-Current Amplifiers and Portable Shaker amplifiers
http://www.apsdynamics.com/

Advantech
Manufacturer of Solid State High Power Amplifiers (SSPA) and Low Noise Amplifiers (LNA) and associated redundancy equipment. Also manufactures broadband amplifiers and multiplexers.
http://www.advantech.ca/

Long Distance Technologies
Long Distance Technologies design & manufacture communications equipment such as repeater systems (GSM & other), RF power amplifiers, transmitters & frequency synthesizers.
http://www.ldt.com.au/

Nextec Microwave & RF, Inc
Nextec Microwave & RF designs and manufacturers broadband power amplifiers, broadband low noise amplifiers, communication band high power amlifiers, frequency multipliers, and OC-192 modulator driver amplifiers for commercial, military & fiber optic applications.
http://www.nextec-rf.com

Apex Microtechnology
Produces monolithic and hybrid high voltage and high power operational amplifiers, pulse width modulation (PWM) amplifiers, and motion control products.
http://eportal.apexmicrotech.com/mainsite/

Teletronics International, Inc.
Designs, develops, and manufactures products for high speed wireless broadband systems, including RF amplifiers, up/down frequency converters, wireless network bridges and routers.
http://www.teletronics.com/

Horst David GmbH
Horst David GmbH - Induktivitäten, Federn, Baluns, SMD Luftspulen, Wickelgüter, Sensorspulen für elektronische Wasserzähler, CATV, HF Spulen, Breitband Symmetrie Übertrager, Eingangsübertrager, 4:1Übertrager,
http://www.david-inductance.de

Ritec Inc. (USA)
RITEC is the global leader in high-power ultrasonic instruments providing stand-alone instruments or complete modular systems, easily customized for specific requirements. RITEC gated tone burst amplifiers are capable of driving piezoelectric, electromagnetic acoustic and air-coupled transducers.
http://www.ritecinc.com/

Luff Research Inc.
Manufacture high performance RF frequency synthesizers and phase-locked frequency sources.
http://www.luffresearch.com/