On Thu, 11 Sep 2003 14:24:23 +0100 "Serge F. Vidal"
<serge.vi...@ate-international.com> writes:
> 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!
THATS the way, Virg
>
> 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>
> 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
>
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