KEYCOM provides solutions in the 300 GHz to 1 μHz frequency range (SHF/EHF/MW/UHF/VHF/ULF).
We undertake designing, manufacturing and measuring. Please feel free to contact us.

KEYCOM Provides Solutions in the 10 μHz-300 GHz
(infrasonic / VHF / UHF / microwave / millimeter wave / super-high) Frequency Range

Model No. IXE

KEYCOM develops and manufactures highly accurate and dependable measurement components, devices and systems in the 10 μHz-300 GHz (infrasonic / VHF / UHF / microwave / millimeter wave / super-high) frequency range by leveraging its experience and expertise accumulated over a long period of time in the field of advanced technologies.

If you are looking for solutions for your specific applications including permittivity measurement, absorption ratio, transmission tracks and devices, antennas, cables and ESR instruments for the infrasonic/VHF/UHF/microwave/millimeter-wave/super-high frequency ranges, look no further.

#Measurement (contract analysis) service
KEYCOM not only has a highly-advanced products in the 10μHz-300GHz frequency range, but also accumulates expertise in measurement techniques.
KEYCOM is a member of the JIS committees for the following measurements:
・Permittivity measurement
・Electromagnetic absorption ratio measurement
The measurement method of the reflection ratio of electromagnetic absorbers, which KEYCOM developed, was accepted as a standard in The Institute of Electronics, Information and Communication Engineers. The detail was reported at the session of IEEE IMS2005. (Orlando, FL, USA March 29-30, KEYCOM; 30 march in 2005).

Announcement of our Holidays

Our office will be closed during the following period:

December 25th, 2020, to January 4th, 2021
We will open from January 5th, 2021 and we apologize for your inconvenience during this period.

National holidays in 2020:

03 Nov Tuesday   Culture Day
23 Nov Monday   Labor Thanksgiving Day

National holidays in 2021:

01 Jan   New Year’s Day
11 Jan   Coming of Age Day
11 Feb   National Foundation Day
23 Feb   Emperor’s Birthday
20 Mar   Vernal Equinox Day
29 Apr   Shōwa Day
03 May   Constitution Memorial Day
04 May   Greenery Day
05 May   Children’s Day
22 Jul   Marine Day
23 Jul   Sports Day
08 Aug   Mountain Day
09 Aug   Mountain Day (observed)
20 Sep   Respect for the Aged Day
03 Nov   Autumnal Equinox Day
03 Nov   Culture Day
23 Nov   Labor Thanksgiving Day


Semi-Rigid Cables for Cryogenic (Super low temperature) Applications

・ Superconducting semi-rigid coaxial cables for cryogenic applications.

Cryogenic(Super low temperature) / Super Conductive Cables

・ NbTi-NbTi Superconducting Coaxial Cables (0.085" / 0.047" / 0.034" type )

Also please see this page of products for cryogenic environments & super conductivity.


Ultra High Speed RF Switch Module Series

・Switching speed less than 0.5ns
・Operates on +5V single supply
・Control power supply operates between +3.3V~+5V

DC~20GHz  SPST  RF Switch Module
DC~20GHz  SPDT  RF Switch Module
DC~40GHz  SPST  RF Switch Module
DC~40GHz  SPDT  RF Switch Module



KEYCOM Service Center for Quality Measurements, Evaluation and Analyses
Based on our accumulated experience in measurements and development of measurement devices since the foundation in 1992, Keycom has dedicated itself to offering precise measurement services and devices to the customers who are in need of fast and accurate solutions.

KEYCOM is a member of the IEC Standardization Commitee and the JIS Standardization Commitee

・Measurement method of  the dielectric characteristics (JIS R 1660-2)
・Measurement Method for Reflectivity of Electromagnetic Wave Absorbers in Millimeter Wave Frequency (IEC62431 and JIS R 1679)


Exhibition / Testing Expo China - Automotive 2020

Testing Expo China - Automotive 2020

Place : Shanghai World Expo Exhibition and Convention Center
Date : 14-16 September 2020


The ICF11 New Product &Novel Technology Award

KEYCOM's "High Frequency Magnetic Measurement System from 100kHz to 10GHz" has been awarded the ICF11 New Product &Novel Technology Award at The 11th International Conference on Ferrites(ICF11.)