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About RF Cafe

Kirt Blattenberger - RF Cafe Webmaster

Copyright: 1996 - 2024


    Kirt Blattenberger,


RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while tying up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.

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Contact Information

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Contact Info


329, Saeun-ro, Giheung-gu, Yongin-si

Gyeonggi-do, 17078 South Korea

Tel: +82-70-7118-0705

E-Mail: sales@with-wave.com

Website: www.with-wave.com


About Withwave

Withwave is a leading designer, developer, and manufacturer of a broad range of RF & MW test solutions and subsystems with a focus on electromagnetic field analysis and RF & microwave signal processing.

Withwave's extensive product portfolio serves four primary target markets:

  • Wireless communications
  • Test & Instrumentation
  • Automated Test Equipments 
  • Network Systems

Applications for our products in these target markets include cellular phones and base stations, data networking, semiconductor and telecommunications equipment and factory automation.

Withwave maintains its competitiveness by continuously innovating products and services in an environmentally beneficial and sustainable manner. We add new technologies and abilities to our portfolio of competences to ensure our long-term success.

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Withwave RF & Microwave Components (Max) - RF Cafe

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Many Thanks to Withwave for Long−Time Support!

Withwave RF & Microwave Components - RF CafeWithwave manufactures an extensive line of metrology quality coaxial test cable assemblies, connectors (wave-, end-, vertical-launch, board edge, panel mount), calibration kits (SOLT), a fully automated 4-port vector network analyzer (VNA) calibrator, between- and in-series connector adaptors, attenuators, terminations, DC blocks, torque wrenches, test probes & probe positioner. Special test fixtures for calibration and multicoax cable assemblies. Frequency ranges from DC through 110 GHz. Please contact Withwave today to see how they can help your project succeed.

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Withwave (78x26)


Metrology quality coaxial test cable assemblies, connectors (wave-, end-, vertical-launch, board edge), calibration kits (SOLT), fully automated VNA calibrator, between- and in-series connector adaptors, attenuators, terminations, test probes & positioners.

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