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Re: Helix or ao uplink or not?



Either will work but the helical antenna will be heavier and have more wind
load than a crossed yagi. Athough both have one wavelength long "elements"
the helix requires an additional insulated support structure. The helical
antenna has a much wider bandwidth (50%) than the yagi (5%).

73,

John
KD6OZH

----- Original Message -----
From: "Brian" <groupes@smart-tech.dk>
To: <amsat-bb@AMSAT.Org>
Sent: Saturday, July 19, 2003 18:19
Subject: [amsat-bb] Helix or ao uplink or not?


> Hello.
>
> Im very new to AO40 and would like to know if a helix 435mhz is good for
> uplink
> to AO40 or is it better with a X-yagi if we say the gain is the same on
both
> antennas?
>
> Regards
> Brian
> OZ1SKY
>
>
> ----
> Sent via amsat-bb@amsat.org. Opinions expressed are those of the author.
> Not an AMSAT member? Join now to support the amateur satellite program!
> To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org
>


----
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