Actually, Colin, you scared me enough to have me do some research. First of all, let me precise that I didn't do anything. I bought the plane like that.Second, the antenna is a standard aircraft antenna (fin-shaped), removed from a certified aeroplane. Third, the transponder is a Bendix KT-76A - Frequency: 1030 MHz - Output: "200 watts peak minimum transmitter power" Apparently, you're right, that's scary. But since I haven't used it much, I might have enough brain left to mount it on the belly instead, and shield it by making an aluminum ground plane of some sort!
Serge Vidal -----Original Message----- From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net]On Behalf Of Ross Youngblood Sent: Thursday, September 11, 2003 3:17 AM To: KR builders and pilots Subject: Re: KR>Trans antenna I'm not sure about this myself. Is there anyone with RF background who can attest to people getting cooked with Transponder Antenna output? It's one thing to stand next to a Radar dish, but the power levels of the Transponder antenna are much less. I'm going to touch base with some RF guys I work with to see if the power levels are somthing to worry about. I'm thinking the average transponder output is less than 5-10Watts. And I think the power density decreases with distance.. although we will still be quite close. I think the transponder is around 2Ghz... and lots of new stuff is getting into this range... cordless phones for example... but they are at much lower power levels I expect (milliwatts I would guess). ----- Original Message ----- From: "Colin" <crain...@cfl.rr.com> List-Post: krnet@list.krnet.org Date: Wed, 10 Sep 2003 16:12:24 -0400 To: "KR builders and pilots" <kr...@mylist.net> Subject: KR>Trans antenna > Serge, > Unless you included some kind of shielding from the radiation of the antenna, you might as well have stuck your head into a microwave. > Colin Rainey KR2(td) > crain...@cfl.rr.com > Sanford, Florida > FLY SAFE!!!!_______________________________________________ > see KRnet list details at http://www.krnet.org/instructions.html -- ____________________________________________ http://www.operamail.com Get OperaMail Premium today - USD 29.99/year Powered by Outblaze _______________________________________________ see KRnet list details at http://www.krnet.org/instructions.html
