Filters / Diplexers
- Admotech Inc.
- Advanced Semiconductor Business, Inc. [PTM Corp.]
- Akon, Inc. [Seki Technotron Corp.]
- AMT, Inc.
- Apollo Microwaves, Ltd. [Hi-Technology Trading, Inc.]
- AWR Japan K.K.
- Bowei Integrated Circuits Co., Ltd. [Hi-Technology Trading, Inc.]
- BSC Filters, Ltd. [CORNES DODWELL LTD.]
- Channel Microwave Corp. [AET, Inc.]
- Coleman Microwave Company [Midoriya Electric Co., Ltd.]
- Comcraft Corp.
- Comotech Corp. [PTM Corp.]
- CORNES DODWELL LTD.
- Digital Signal Technology, Inc.
- Dorado International Corp. [PTM Corp.]
- ET Industries [AMT, Inc.]
- Farad Corp.
- Fusoh Shoji Co., Ltd.
- G.T. Electronics Corp.
- General Dynamics Satcom Technologies [Rikei Corp.]
- Hirai Seimitsu Kogyo Corp.
- Hi-Technology Trading, Inc.
- HNL, Inc. [AET, Inc.]
- IDT / Micro Networks Corp. [Shoshin Corp.]
- Innertron Japan Co., Ltd.
- K & L Microwave, Inc. [Shoshin Corp.]
- Keycom Corp.
- KJ Comtech Co., Ltd. [Maycom Japan Co., Ltd.]
- L-3 Communications, Narda Microwave-West [Midoriya Electric Co., Ltd.]
- Link Microtek, Ltd. [Midoriya Electric Co., Ltd.]
- MAJ Co., Ltd.
- Marki Microwave, Inc. [AMT, Inc.]
- Maycom Japan Co., Ltd.
- Mega Industries, L.L.C. [AET, Inc.]
- MESL Microwave, Ltd. [M-RF Co., Ltd.]
- Micro Lambda Wireless, Inc. [M-RF Co., Ltd.]
- Microlab / FXR [Shoshin Corp.]
- Microsource, Inc. [Midoriya Electric Co., Ltd.]
- Micro-Tronics, Inc. [Netwell Corp.]
- Micro-Tronics, Inc. [Rikei Corp.]
- Microwave Development Laboratories, Inc. [Hi-Technology Trading, Inc.]
- Midoriya Electric Co., Ltd.
- Millimeter Wave Product, Inc. [Hi-Technology Trading, Inc.]
- Mini-Circuits [Mini-Circuits Yokohama, Ltd.]
- Mini-Circuits Laboratory, Inc. [M-RF Co., Ltd.]
- Mini-Circuits Yokohama, Ltd.
- M-RF Co., Ltd.
- Netwell Corp.
- Nextec Microwave & RF, Inc. [PTM Corp.]
- Nihon Koshuha Co., Ltd.
- PTM Corp.
- R & K Co., Ltd.
- Raltron Electronics Corp. [M-RF Co., Ltd.]
- RF Test Lab Co., Ltd.
- RFHIC Corp. [M-RF Co., Ltd.]
- R.F. Hitec, Inc. [PTM Corp.]
- Rikei Corp.
- Sangshin Elecom Co., Ltd. [PTM Corp.]
- Sanken Co., Ltd.
- Seki Technotron Corp.
- Shoshin Corp.
- Sivers IMA, AB [Shoshin Corp.]
- Skyworks Solutions, Inc. [M-RF Co., Ltd.]
- Spacek Labs, Inc. [Netwell Corp.]
- Spacek Labs, Inc. [Rikei Corp.]
- Spectrum Control, Inc. [Seki Technotron Corp.]
- Spectrum Microwave, Inc. [MAJ Co., Ltd..]
- Stack Electronics Co., Ltd.
- STC Microwave Systems, Arizona [Seki Technotron Corp.]
- STC Microwave Systems, Olektron [Seki Technotron Corp.]
- Summitek Instruments, Inc. [Seki Technotron Corp.]
- Syfer Technology, Ltd. [Rikei Corp.]
- Takitek K.K.
- Tamagawa Electronics Co., Ltd.
- TEMEX [Rikei Corp.]
- The Ferrite Company, Inc. [Midoriya Electric Co., Ltd.]
- Toko Denshi Co., Ltd.
- Tokyo Keiki, Inc.
- Trans-Tech, Inc. [M-RF Co., Ltd.]
- Universal Microwave Technology, Inc. [AMT, Inc.]
- Universal Microwave Technology, Inc. [M-RF Co., Ltd.]
- Vertex Microwave Products, Inc. [Hi-Technology Trading, Inc.]
- Wainwright Instruments GmbH [Farad Corp.]
- Waka Manufacturing Co., Ltd.
- Wakoh Communication Industrial Co., Ltd.