Welcome to A.H. Systems, Inc.
A.H. Systems has been established since 1974 and manufactures a complete line of affordable,
reliable, EMI test equipment. Our individually calibrated EMI Test Antennas, Preamplifiers,
Current Probes and Low-Loss Cables satisfy many test standards including CISPR, MIL-STD, FCC,
EN, VDE, IEC and SAE. With a wide variety of mounting configurations, we can also offer tripods
and accessories that compliment other EMI testing equipment used to complete your testing
requirements. We are also committed to providing all of our clients with no cost prompt and
professional technical support. Manufacturing high quality products at competitive prices with
immediate shipment plus prompt technical support are our goals to better their quality of your
The online catalog provides a list of all the
standard products that we manufacture. Here you will find an assortment of information for each
standard product including product descriptions, specifications, typical AF plots, average VSWR,
typical data, and other pertinent data.
Annual calibration of EMI test antennas is important to ensure repeatable and reliable performance.
We can provide a wide variety of antenna
calibration services including Antenna Factor, Beamwidth, VSWR and gain calculation.
Even though A.H. Systems specializes in the design, manufacturing and calibration of quality and
reliable test equipment for compliance testing, we can also provide
rental equipment for most of our
When tough economical times come, many companies find ways to cut expenses. A.H. Systems is
proud to introduce a new avenue of savings with our
We have a listing of many different models to satisfy a wide variety of applications in our
Discount Warehouse. These test antennas have been returned back to new life to offer years of
trouble free performance at a reduced price.
Have a question about how to perform a test, or what test you should perform? A.H. Systems is
here to help, browse our
Technical Notes section for answers.
Here we have many resources, including common
RF Related Conversions listed for EMI testing applications.
Antenna Data sheets are also listed for reference.
Immunity standards are always changing and we have the article to assist you in selecting the proper
antenna/power amplifier combinations
for the coming new RF immunity standards.
Have a question? Call us or send us an Email and we will
answer your question. Not only have we been in business for over 35 years, but also have
worldwide representatives in over 21
different countries. Need test equipment in Asia, Europe, or the Middle East? With A.H. Systems,
it's never a problem. We are here to assist you with your EMC/EMI test antenna requirements.
Don't forget, we offer
Next-Day, On-Time Delivery
for your time-critical requirements.