---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Wed 08/15/18: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 03:44 PM - elt antenna (bobnoffs) 2. 05:11 PM - Re: elt antenna (Stuart Hutchison) ________________________________ Message 1 _____________________________________ Time: 03:44:03 PM PST US Subject: AeroElectric-List: elt antenna From: "bobnoffs" in the process of mounting the antenna for an aretex 345 elt. i am wondering if anyone has any experience mounting this antenna base 4-5' below the longeron and window. i am asking if that bottom 5' of antenna behind an alum. skin will impair signal. the bottom 8 or 9' of the antenna is encased in hard rubber. i asked a factory rep about this but it was a pretty ambigious answer. i suppose it is a pretty unpredictable set of circumstances. anyone that can speak from experience or knowledge please let me know. bob noffs p.s. o.v.m. is almost in. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=482430#482430 ________________________________ Message 2 _____________________________________ Time: 05:11:33 PM PST US From: Stuart Hutchison Subject: Re: AeroElectric-List: elt antenna Gday Bob. I working a similar problem. My part number is ELT10-773 for a Kannad Compact if you want to look up a pic. I believe these ELT whip antennas are base-loaded, meaning the Acetal plastic base is also generating signal and should not be shielded by a metal fuselage. I dont want all that thick antenna base hanging out in the breeze. For this reason I have installed mine in the dorsal fin, but with the empennage fitted I cant reach into the fuselage from the back to uncouple the coax BNC, so I need to make a doubler in the skin to unscrew the mount from above. This requires taking the dorsal fin off, which puts some pressure on the antenna base and causes some flex in the skin (cos it wraps around the leading edge of the horizontal stab). I would like to make a flex joint to stop the skin movement, but I suspect this antenna requires proper grounding to a ground plane just like a COM antenna. Kind regards, Stu > On 16 Aug 2018, at 08:43, bobnoffs wrote: > > > in the process of mounting the antenna for an aretex 345 elt. i am wondering if anyone has any experience mounting this antenna base 4-5' below the longeron and window. i am asking if that bottom 5' of antenna behind an alum. skin will impair signal. the bottom 8 or 9' of the antenna is encased in hard rubber. > i asked a factory rep about this but it was a pretty ambigious answer. i suppose it is a pretty unpredictable set of circumstances. anyone that can speak from experience or knowledge please let me know. > bob noffs > > p.s. o.v.m. is almost in. > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=482430#482430 > > > > > > > > > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message aeroelectric-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/AeroElectric-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/aeroelectric-list Browse Digests http://www.matronics.com/digest/aeroelectric-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.