Hi BB, This post may help you follow down the page..:
http://www.rcgroups.com/forums/showthread.php?t=595288&page=7&highlight=supra+flap Regards... On Feb 11, 2008 9:23 AM, Soaring <Soaring@airage.com> wrote: > Soaring Mon, 11 Feb 2008 Volume 1 : Number 10781 > > In this issue: > > 3.45 Graphite, 2.4ghz AR900 receiver & lots of Anxiety. > > > ---------------------------------------------------------------------- > > Date: Mon, 11 Feb 2008 09:42:41 -0600 > From: B B <[EMAIL PROTECTED]> > To: RC RCSE <soaring@airage.com> > Subject: 3.45 Graphite, 2.4ghz AR900 receiver & lots of Anxiety. > Message-ID: <[EMAIL PROTECTED]> > > --_69130f96-614b-4644-890a-75316328dd10_ > Content-Type: text/plain; charset="Windows-1252" > Content-Transfer-Encoding: quoted-printable > > > I am new at this as many of you and purchased the 2.4 module along with the= > AR9000 receiver to be used in the JR 9303 TX. I also purchased an additio= > nal remote antenna and a Flight log. I know that my application is not the= > norm and there have been a lot of problems associated with trying to get t= > he 2.4 system to properly operate in a carbon-kevlar fuse. > =20 > I am flying an open class graphite 3.45 sailplane using the AR 9000 with 2 = > sattlelite antennas connected to the receiver. The fuse is carbon-kevlar. = > I have one antenna positioned just behind the nosecone just aft of the lea= > ding edge of the wing mounted on the floor of the fuse with the antenna wis= > kers sticking out each side of the fuse. The other has one of the two wisk= > ers sticking straight above the top of the wing up located in the center of= > the wing just behind the spar. =20 > If all this makes since, my question is: > =20 > In an sailplane application where the plane can fly as far as a mile away, = > has anyone checked and come close to what Specktrum is saying below? I am = > not getting any holds but have been getting a lot more fades like 400 to 60= > 0 for each remote antenna during a 10 to 15 minute flight and my frame loss= > is more like 300 to 400. Both antennas A & B which are internally mounted = > in the AR 9000 receiver are null because of the carbon kevlar fuse. So when= > flying, I relay completely on the external sattlelite antennas. > =20 > The plane seems to fly fine but I have concerns. I can do the 30 pace rang= > e check and still not be totally glitch free even with all the radio gear t= > aped to a board. However I do not get more than 1 or 2 frame losses during = > the range check when installed in the plane but get 25 to 45 fades on each = > external of the antennas. I am tilting the plane in every direction and I = > am sure that my hands may be getting in the way and that could be part of t= > he cause. > Am I playing with disaster or considering the application am I exceeding th= > e safe threshold? I have had 5 successful flights or about 30 minutes of a= > ir time during which I have been tweaking my setup. With no holds. > =20 > Using the =93Spektrum Flight Log=94, the web site Specktrum says: > =20 > Antenna fades =96 represent the loss of a bit of information on that specif= > ic antenna. Typically it=92s normal to have as many as 50 =96 100 antenna f= > ades on any one of the antennas during a flight. If any single antenna expe= > riences over 500 fades in a single flight, the antenna should be reposition= > ed in the aircraft to optimize the RF link.=20 > Frame Loss =96 represents simultaneous antenna fades on all attached receiv= > ers. If the RF link is performing optimally, frame losses per flight should= > be less than 20.=20 > Hold =96 a hold occurs when 45 contiguous (one right after the other) frame= > losses occur. This takes about one second. If a hold occurs during flight,= > it=92s important to re-evaluate the system, moving the antennas to differe= > nt locations and/or checking to be sure the transmitter and receivers are w= > orking correctly.=20 > =20 > Can anyone chime in with sound advice or direct me to any links that may he= > lp ease my anxiety? > =20 > Thanks, > BradOccasionally/often frustrated;...never defeated... > _________________________________________________________________ > Helping your favorite cause is as easy as instant messaging.=A0You IM, we g= > ive. > http://im.live.com/Messenger/IM/Home/?source=3Dtext_hotmail_join= > > --_69130f96-614b-4644-890a-75316328dd10_ > Content-Type: text/html; charset="Windows-1252" > Content-Transfer-Encoding: quoted-printable > > <html> > <head> > <style> > .hmmessage P > { > margin:0px; > padding:0px > } > body.hmmessage > { > FONT-SIZE: 10pt; > FONT-FAMILY:Tahoma > } > </style> > </head> > <body class=3D'hmmessage'> > I am new at this as many of you and purchased the 2.4 module along with the= > AR9000 receiver to be used in the JR 9303 TX. I also purchased an ad= > ditional remote antenna and a Flight log. I know that my application = > is not the norm and there have been a lot of problems associated with tryin= > g to get the 2.4 system to properly operate in a carbon-kevlar fuse.<BR> > <BR> > I am flying an open class graphite 3.45 sailplane using the AR 9000 with 2 = > sattlelite antennas connected to the receiver. The fuse is carbon-kev= > lar. I have one antenna positioned just behind the nosecone just aft = > of the leading edge of the wing mounted on the floor of the fuse with the a= > ntenna wiskers sticking out each side of the fuse. The other has one = > of the two wiskers sticking straight above the top of the wing up located i= > n the center of the wing just behind the spar.  = > ; <BR> > If all this makes since, my question is:<BR> > <BR> > In an sailplane application where the plane can fly as far as a mile away, = > has anyone checked and come close to what Specktrum is saying below? = > I am not getting any holds but have been getting a lot more fades like 400 = > to 600 for each remote antenna during a 10 to 15 minute flight and my frame= > loss is more like 300 to 400. Both antennas A & B which are internally= > mounted in the AR 9000 receiver are null because of the carbon kevlar fuse= > . So when flying, I relay completely on the external sattlelite antennas.<B= > R> > <BR> > The plane seems to fly fine but I have concerns. I can do the 30 pace= > range check and still not be totally glitch free even with all the radio g= > ear taped to a board. However I do not get more than 1 or 2 frame losses du= > ring the range check when installed in the plane but get 25 to 45 fades on = > each external of the antennas. I am tilting the plane in every direct= > ion and I am sure that my hands may be getting in the way and that could be= > part of the cause.<BR> > Am I playing with disaster or considering the application am I exceeding th= > e safe threshold? I have had 5 successful flights or about 30 minutes= > of air time during which I have been tweaking my setup. With no holds.<BR> > <BR> > Using the =93Spektrum Flight Log=94, the web site Specktrum says:<BR> > <BR> > Antenna fades =96 represent the loss of a bit of information on that specif= > ic antenna. Typically it=92s normal to have as many as 50 =96 100 antenna f= > ades on any one of the antennas during a flight. If any single antenna expe= > riences over <BR>500 fades in a single flight, the antenna should be reposi= > tioned in the aircraft to optimize the RF link. <BR> > Frame Loss =96 represents simultaneous antenna fades on all attached receiv= > ers. If the RF link is performing optimally, frame losses per flight should= > be less than 20. <BR> > Hold =96 a hold occurs when 45 contiguous (one right after the other) frame= > losses occur. This takes about one second. If a hold occurs during flight,= > it=92s important to re-evaluate the system, moving the antennas to differe= > nt locations and/or checking to be sure the transmitter and receivers are w= > orking correctly. <BR> > <BR> > Can anyone chime in with sound advice or direct me to any links that may he= > lp ease my anxiety?<BR> > <BR> > Thanks,<BR> > Brad<BR><BR>Occasionally/often frustrated;<BR>...never defeated...<BR><BR><= > br /><hr />Helping your favorite cause is as easy as instant messaging.=A0Y= > ou IM, we give. <a href=3D'http://im.live.com/Messenger/IM/Home/?source=3Dt= > ext_hotmail_join' target=3D'_new'>Learn more.</a></body> > </html>= > > --_69130f96-614b-4644-890a-75316328dd10_-- > > ------------------------------ > > End of Soaring V1 #10781 > ************************ > RCSE-List facilities provided by Model Airplane News. Send "subscribe" and > "unsubscribe" requests to [EMAIL PROTECTED] Please note that subscribe and > unsubscribe messages must be sent in text only format with MIME turned off. > Email sent from web based email such as Hotmail and AOL are generally NOT in > text format > > RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format
