This is a wood and glass plane, so is practically invisible to RF. Consider mounting your transponder antenna internally under the aft deck rather than having it radiating right under your butt. I attached a photo that includes my transponder antenna mounted internally in the fuselage back towards the tail (upper left of photo). It's hard to see, but the antenna is mounted to an aluminum disk used as a ground plane that is roughly the diameter of 2x the length of the antenna. I have never had any complaints from ATC about the transponder, so assume it works reasonably well mounted like this.
-Jeff Scott Los Alamos, NM > On 5/12/2015 11:28 PM, stefkr2--- via KRnet wrote: > > Kr friend, > > I want to install a xpdr antenne, I have learned to install this antenne > > under the Seat because of the high transmission power. I have learned to > > that I can buy a alluminium plate to make a grounding plate And to shielded > > off your BU..... Does somebody know what are the dimensions And thickness > > of that round alluminium plate? This should be easy to make it your self. > > Thanks Stef > > > > -- > > Steph and his dad are building the KR-2S see > > http://www.masttotaalconcept.nl/kr2 -------------- next part -------------- A non-text attachment was scrubbed... Name: xpond.jpg Type: image/jpeg Size: 21386 bytes Desc: not available URL: <http://list.krnet.org/mailman/private/krnet_list.krnet.org/attachments/20150513/6613c790/attachment.jpg>
