- Antenna Research, Beltsville, MD, USA, 301-937-8888
- Arcotronics, Towcester, Northants, UK, +44 1327 351515
- Arcotronics Inc., Bohemia, NY, USA, 631-563-9568
- BLP Components, Newmarket, Suffolk, UK, +44 1 638 665 161
- Comtest Instrumentation BV, Eindhoven, Netherlands, +31 40 2908830
- Corcom, a Tyco Electronics Co., Libertyville, IL, USA, 847-680-7400
- EMC Eupen, a div. of I2R Corp., Farmingdale, NJ, USA, 732-919-1100
- EMCC Dr. Rasek, Ebermannstadt, Germany, +49 9194 9016
- Equipto Electronics Corp., Aurora, IL, USA, 800-204-7225
- ETS-Lindgren UK, Stevenage, Herts, UK, +44 1438 730700
- Genisco Filter Corp., San Diego, CA, USA, 619-428-0554
- Holland Shielding Systems B.V., Dordrecht, The Netherlands, +31 78 6131366
- Icore International Ltd., Slough, Berks, UK, +44 1753 574134
- MPE Ltd., Knowsley Industrial Park, Liverpool, UK, +44 151 6329100
- Spectrum Control Inc., Fairview, PA, USA, 814-474-2207
- Tecknit Europe Ltd., Grantham, Lincs, UK, +44 1476 590600
- Tecknit Inc., Cranford, NJ, USA, 908-272-5500
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