I have to answer this... Atleast since it is me that wrote the Samba article...
Longer antenna in a Pike IS better. This because the fact that the antenna inside a carbon fuse is shielded just like you car antenna is untill it exits the car to the antenna. So if 30cm is outside the fuse you HAVE only 30cm antenna... But the things get complicated since some of the antenna inside also receives SOME of it. SO what is the real length? No one knows... The same problem comes when you tape the antenna along the fuse. It is being shielded since it is VERY close to the fuse. Just like laying your car antenna down on the roof. The reception goes down and that fancy music gets corrupted..
Y-antenna IS better. On a V-tail running two antennas you get a good angle to the Tx (you) whatever angle the plane is flying. Therefore the tests show it is better. The Swedish F3B team (some of them) even ran the antenna out the elevator and then back again to exit the top of the rudder fin...
Oh BTW I have been testing a lot now on 72mhz also. Very little difference to 35mhz.... The stock antenna (both Rx/Tx) are also supplied in the same lengths.
BTW Simon say hi to all I know up there! Hope to see you again sometime!
Regards Jojo in Norway (that hope to receive a 9303 from Horizon very soon :-) www.grini.no
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Date: Fri, 25 Mar 2005 23:13:16 -0800 From: Simon Van Leeuwen <[EMAIL PROTECTED]> To: Larry Taylor <[EMAIL PROTECTED]> Cc: soaring@airage.com Subject: Re: [RCSE] fuselages & radio range, Antenna Stuff Message-ID: <[EMAIL PROTECTED]>
This is incorrect and misleading...adding wire to an antenna for the sake of it does not result in better gain! Longer is NOT better! More wire does not equate to more voltage at the antenna element no matter what the condition...
Date: Fri, 25 Mar 2005 23:14:27 -0800 From: Simon Van Leeuwen <[EMAIL PROTECTED]>
Subject: Re: [RCSE] Check out Samba Model, Antenna Message-ID: <[EMAIL PROTECTED]>
keep in mind these recomendations are squarely based on 35-40MHz experiences...the "Y" thing is an absolutely useless feature.
[EMAIL PROTECTED] wrote:Click here: Samba Model, Antenna <http://www.modely.cz/samba/antenna.htm>
All,
Samba Model is a very good supplier to report and recommend solutions to the use of antennas with carbon fuselage sailplanes.
With my sub-rudder type sailplanes, I have had very good results with the antenna directed down from the pod fuselage below the carbon boom to the sub-rudder with a rubber band tensioner.
Dale Nutter [EMAIL PROTECTED]
-- Simon Van Leeuwen RADIUS SYSTEMS PnP SYSTEMS - The E-Harness of Choice Cogito Ergo Zooom
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