Where can I find QFA antennas? - RF Cafe Forums

The original RF Cafe Forums were shut down in late 2012 due to maintenance issues - primarily having to spend time purging garbage posts from the board. At some point I might start the RF Cafe Forums again if the phpBB software gets better at filtering spam.

Below are the old forum threads, including responses to the original posts.

-- Amateur Radio
-- Anecdotes, Gripes & Humor
-- Antennas
-- CAE, CAD, & Software
-- Circuits & Components
-- Employment & Interviews

-- Miscellany
-- Swap Shop
-- Systems
-- Test & Measurement
-- Webmaster

erik

Post subject: Where can I find QFA antennas?

Posted: Mon May 23, 2005 5:00 pm

I am looking for a QFA antenna for a small hand held device running at 900MHz. Can anyone direct me to a site that carries this?

Thanks!

erik

oren

Post subject: quadrifilar helical antenna

Posted: Fri May 27, 2005 6:44 am

would you like to build it or just to purchase it.

Posted 11/12/2012

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 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.

My Hobby Website: AirplanesAndRockets.com

My Daughter's Website: EquineKingdom

Johanson Dielectrics EMI Filters - RF Cafe

Windfreak Technologies Frequency Synthesizers - RF Cafe

Copper Mountain Technologies Vector Network Analyzers - RF Cafe