hello all any one have a good idea for a omni directional antenna for the birds?
Carlos,
This is the antenna I homebrewed. Works like charm. Cost me $20.00 in parts ($7.00 of that was shipping for the Capacitors from Mouser).
http://www.wa5vjb.com/references/Cheap%20Antennas-LEOs.pdf
73 Rick K7TEJ
---- Carlos Poinho [email protected] wrote:
hello all any one have a good idea for a omni directional antenna for the birds?
Sent via [email protected]. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
OK,
I guess I should read the whole thing. Missed the word "OMNI". Still it's a good antenna and a quick homebrew project. Maybe something your new Sat Group could do with students?
73 Rick K7TEJ
---- [email protected] wrote:
Carlos,
This is the antenna I homebrewed. Works like charm. Cost me $20.00 in parts ($7.00 of that was shipping for the Capacitors from Mouser).
http://www.wa5vjb.com/references/Cheap%20Antennas-LEOs.pdf
73 Rick K7TEJ
---- Carlos Poinho [email protected] wrote:
hello all any one have a good idea for a omni directional antenna for the birds?
Sent via [email protected]. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
although it *is* direction, I agree, it's an effective antenna. I've made one myself and it's working great! Kent's design is simple and from readily available and inexpensive material.
73's peter ve7ngp
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Tuesday, April 24, 2012 2:17 PM To: [email protected]; [email protected]; [email protected] Subject: [amsat-bb] Re: satellite antenna
OK,
I guess I should read the whole thing. Missed the word "OMNI". Still it's a good antenna and a quick homebrew project. Maybe something your new Sat Group could do with students?
73 Rick K7TEJ
---- [email protected] wrote:
Carlos,
This is the antenna I homebrewed. Works like charm. Cost me $20.00 in parts ($7.00 of that was shipping for the Capacitors from Mouser).
http://www.wa5vjb.com/references/Cheap%20Antennas-LEOs.pdf
73 Rick K7TEJ
---- Carlos Poinho [email protected] wrote:
hello all any one have a good idea for a omni directional antenna for the birds?
Sent via [email protected]. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
_______________________________________________ Sent via [email protected]. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
any one have a good idea for a omni directional antenna for the birds?
3/4 wave vertical. Has almost 7 dBi gain above 30 deg. For 70cm downlinks, this means a 19.5" vertical over a ground plane. Also is a perfect 1/4wave on 2 meters.
It's the yellow curve on the plot about 80% down this page: http://aprs.org/astars.html
Bob, Wb4aPR
_______________________________________________ Sent via [email protected]. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
Hello Carlos,
You can try to search for a eggbeater antenna like this one
http://victrolla.homeip.net/wo5s/junkpile/432/eggbeater2.pdf
Thanks Yanko, NX9G
----- Original Message -----
From: "Carlos Poinho" [email protected] To: [email protected] Sent: Tuesday, April 24, 2012 4:00:26 PM Subject: [amsat-bb] satellite antenna
hello all any one have a good idea for a omni directional antenna for the birds?
_______________________________________________ Sent via [email protected]. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
participants (5)
-
Bob Bruninga -
Carlos Poinho -
Ng, Peter -
saguaroastro＠cox.net -
Yanko P. Yankov