1996 - 2016
BSEE - KB3UON
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 Internet was still largely an unknown entity at the time and not much was available in the form of WYSIWYG ...
All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.
My Hobby Website:
The inventions and products featured on these pages were chosen either for their uniqueness in the RF engineering realm, or are simply awesome (or ridiculous) enough to warrant an appearance.
All Featured Product Archive Pages:
has created the world's first real-time language translator that runs on a cellphone; the device can turn spoken
Japanese sentences into their English language equivalent.
These surface-mount relays are from Teledyne. The SGRF100 (square body) and the SGRF300 (round body) have DPDT contacts and operate from DC to 6 GHz.
The TI-Nspire calculator uses computer-like interface with cursor, drop-down menus, and saving of screens.
$1,850US and the cost of a 24 Vdc supply, you can take out whole restaurant full of yakking idiots with this
32 W jammer. Of course, it is only to be used in approved environments like prisons and opera halls.
HP 35s retro calculator, launched July 12, 2007. Original was name for its 35 keys, new model has keys 8 more keys, LCD vs LED, 359-page manual, RPN or algebraic entry.
QRC Technologies has created a very high quality wall chart that covers all the current wireless frequency bands. It is in a convenient PDF format so you can scale and print it in a size to fit your needs.
the technophile that can't remember whether he turned on the hot or cold water...
These USBCell batteries are NiMH cells that recharge via any USB port. AA, AAA, 9V, and cellphones sizes.
This FREE software named, appropriately, Electric Field, allows you to place point charges on the grid and then it will plot the resulting electric and magnetic fields.
is the world's smallest 2.4 GHz specan, and is designed specifically for troubleshooting and
Wi-Fi networks. It shows signal strength for all Wi-Fi networks as well as Bluetooth, cordless phones, Zigbee,
Manfred Kanther's Tuning Network spreadsheet for Excel is an amazing piece of work. It uses extensive VBA code to facilitate the user interface, including the Smith Chart. Download it for free.