AMPLIFIERS
Filtek 

CABLE ASSEMBLIES
Cygnus

CAPACITORS
Arizona Capacitor
Bycap Inc.
Component Research Co.
Custom Electronics Inc.
Goguen Ind.
High Energy Corp.
SEMCO
Spectrum Control, Inc.
A-Z CAP

CIRCUIT BOARDS &
ELECTRONIC COMPONENTS
Frequency Selective Networks, Inc.

COILS
Communication Coil
Frequency Selective Networks, Inc. Vanguard Electronics Co., Inc.

CONNECTORS
Spectrum Control, Inc.

DISCRIMINATORS
Filtek

FILTERS
Bycap Inc.
Filtek
Frequency Selective Networks, Inc.
Spectrum Control, Inc.  

GASKETING
EMI-RFI
Panel Filters

INJECTED AND MOLDED PLASTIC PARTS

MACHINED PRODUCTS
BIWAL

OSCILLATORS
Filtek

RESISTOR ASSEMBLIES
Frequency Selective Networks, Inc.

RESISTORS
Precision Resistor
Vishay 

ROTARY SWITCHES
CRL Components
Electro Switch
Oak

TRANSFORMERS
Communication Coil
Frequency Selective Networks, Inc.