Question on 2.5 ghz cordless phone antennas

You often see old cordless phones tossed out on junk day or at
fleamarkets for a few cents.

Can the antennas on these be used for wifi projects?

What dBi would they be (handpiece v's the basestation).

Just thinkin :-)

Cheers

Rob
--

"me here" <gloaming_agnet@hotmail.com> hath wroth:

>You often see old cordless phones tossed out on junk day or at
>fleamarkets for a few cents.

Yep. The battery dies, so the owner just throws away the whole
cordless phone instead of buying a replacement.

>Can the antennas on these be used for wifi projects?

No. The lack of a proper RP-SMA or RP-TNC is the major problem.
If you disassemble the cordless phone, what you'll probably find is a
1/4 wave piece of wire inside a rubber or plastic antenna "radome".
1/4 wave at 2.4GHz is about 3.125". The antenna can be approximately
this length, or twisted into a spring shape.

>What dBi would they be (handpiece v's the basestation).

1/4 wave, under ideal circumstances is about 0dBi. If the antenna
looks like a spring and is (for example) half the 1/4 wave length,
then the gain is -3dBi.

>Just thinkin :-)

You'll do better to make your own directional antenna from scratch.

--
Jeff Liebermann jeffl@comix.santa-cruz.ca.us
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558