Advanced Receiver Research  www.advancedreceiver.com Low noise, fixed frequency receive only preamps, some are have low magnetic parts count.

AR-amps.com  www.ar-amps.com/artody.cfm Maker of RF broad band power amps, for NMR and MRI applications.

Broadband Power Technology  www.bptec.com High power pulsed RF amplifiers, narrow and broad-band.

Communication Power Corporation  www.cpcamps.com A designer and manufacturer of high power, solid-state, RF pulse amplifiers designed specifically for NMR and MRI applications.

EMPower RF systems  www.rf-amplifiers.com RF power amplifiers suitable for MRI and NMR systems. You pick the modules you need and they put it together for you.

Miteq  www.miteq.com LNA and cryogenic preamps. Make your own Cryoprobe.

Ophir RF  www.ophirrf.com Designs and manufactures high power, solid state, broadband and band-specific amplifiers. May be suitable for NMR and MRI applications.

Peter W. Dahl Co.  www.pwdahl.com If you are making your own high power RF amplifiers you will need these guys.

Prana  www.prana-rd.com A european designer and supplier of RF power amplifiers, suitable for MRI and NMR systems.

Radiodan Henry RF Power Amplifiers  www.radiodan.com These guys are distributors for HENRY RF Power Amplifiers. The very best NB RF power amps in the world.

Tomco Technologies  www.tomcorfamplifiers.com RF amplifiers for NMR/MRI applications from 10kHz to 1GHz. They also carry other RF components, T/R switchers. and LNA's.