Archived from groups: alt.video.satellite.mpeg-dvb (
More info?)
"Irwell" <irwell@highstream.net> wrote in message
news:nh1gg0psm1m8joffq7ub0u7i5rvqpq9i5c@4ax.com...
> On Tue, 27 Jul 2004 08:27:57 -0500, "lurknowhere"
<fixlakshmi@wolfmark.com>
> wrote:
>
> >
> >"kryppy" <kryppy@.> wrote in message
> >news:733ag0lav4ic8qcpelpekjj7ofp5iqel4a@4ax.com...
> >> On Sun, 25 Jul 2004 11:05:13 -0500, "lurknowhere"
> >> <lakerror1shmi@wolferror2mark.com> wrote:
> >>
> >> >
> >> >Just wondering if anyone besides me has tried to do it. Increasing
> >amounts
> >> >of small dish hardware by the dumpsters these days, begging for
creative
> >> >sacrificial experimentation.
> >>
> >>
> >> You will require a nice spectrum analyzer and some experience in
> >> microwave RF engineering.
> >>
> >>
> >
> >Well, I did build (component level) and successfully operate my first
C-band
> >receive only earth station system in 1983 (120 degree lna, receiver and
all
> >metal dish). I'm still using the 12.5 foot square spherical reflector
after
> >all these years. Even without the specialized equipment excellent
results
> >can be obtained. All that's required is sufficient ingenuity,
creativity,
> >and a reason to use it. I'm seldom stumpted due to a lack of either one.
> >For me, it's not just about watching tv from a distance with a remote in
> >hand.
> >
> >-Dan
> >
> >
> good for you Dan. I remember those 12 foot
> reflectors, never actually made one,
> I believe they were made from redwood framing.
> Built my first 1 transistor regen radio back in 1958, the germanium
> transistor cost 10 pound sterling, about $100 in today's money.
> It worked great for those times.
I was looking into the redwood/cedar designs at the time, but aluminum and
steel seemed like a cheaper better way for me. I used the standard angle
iron framing for the back support, but the jack screws (that controlled
curvature) were attached to vertical aluminum flats welded to 50 horizontal
flats with 800 metal screws holding the heavy gauge steel mesh in place. I
should post a picture in the binaries. The thing is a work of art. You
could park a truck in front of it, blocking 50%, and it would still get a
good picture. Spherical surface -- 16 foot focal point. I could cover 30
degrees of the arc without moving the dish. Even more, but with diminishing
signal strength.
-Dan
/www.adventistsat.com
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