For over 50 years, North Hills Signal Processing Corporation has been a leading manufacturer of MIL-STD-1553 Data Bus Products and Wideband Transformers. Their standard and custom products, offer unmatched performance and reliability for a wide range of applications in the MILITARY, AEROSPACE and INDUSTRIAL OEM MARKETSNorth Hills Signal Processing Corp..


North Hills is a leading world wide supplier of MIL-STD-1553 data bus couplers, testers, and accessories such as cable, connectors, terminators, dust caps, etc. They are a one-stop shop with a variety of custom and off-the-shelf products. Their data bus couplers use transformers with superior performance and product consistency, manufactured in accordance with MIL-T-21038 with excellent common mode rejection ratios.

North Hills has been designing and manufacturing transformers since 1953 and is an approved supplier for all major military programs.


North Hills has provided precision leading edge RF components to the OEM. An inherent understanding of the intricacies of high frequency magnetic technology together with the capacity to meet or exceed difficult design parameters has given North Hills an industry-wide reputation for providing high-quality magnetic devices with superior performance characteristics. World-class manufacturing facilities, processes, field experience and pride in workmanship bear testimony to the Company's long successNorth Hills Signal Processing Corp..

Wideband Transformers  -  Wideband Transformers match impedances for maximum power transfer or convert single-ended signals to a balance configuration (balun) for transmission of communication signals. North Hills baluns have low transmission loss and superior return loss.  A wide selection of  balanced to unbalanced (Baluns) and unbalanced to  unbalanced (Ununs) designs in the 20Hz – 300MHz frequency range are available.

Wideband InstrumentationLongitudinal Balance Bridges,facilitate the measurement of balance, Longitudinal Conversion Loss (LCL) and Longitudinal Transverse Conversion Loss (LTCL) per ITU-T Recommendation O.9. The RLB, RLC, and RLT series of Return Loss Bridges are used to measure the impedances of various devices and networks. Both product lines are designed for use with 50 or 75 ohm network analyzers.

North Hills Signal Processing Corp.Video Isolation - “Humstoppers” and “Humbuckers ” prevent interference with video and data transmission due to pickup and potential differences between remote grounds. If picture quality is an issue, check out North Hills DC-isolated "Humstoppers" for power-line isolation and DC-coupled "Humbuckers" for common mode noise elimination.

Additionally, in order to stay ahead of today's ever changing marketplace, North Hills has developed a quick response engineering, design and production team for custom products.

Please don't hesitate to contact North Hills Signal Processing Corp. to discuss your particular applications and needs.

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Technical Articles

A Simple 1553 Setup for Testing and Application (Calibration and Testing Services) Making a test or simulation setup for a MIL STD-1553 data bus system is made easy with North Hills 70 Series" Data Bus Coupler Kit. This "Kit" can be tailored to your specific needs and includes all... (View Full Article)
Balun Measurements (Calibration and Testing Services) A Balun, as shown in Fig. 1, is a two-winding transformer designed to convert a single ended (i.e. one side grounded) signal to one balanced with respect to ground. The balanced winding may or may not... (View Full Article)