Re: Looking for a G3RUH dish

5 Jan 2012

      Doug and Alan,
The LVB Tracker II will do the same as well. From what I read, to convert a LVB tracker 1 to a LVB tracker II, it requires
a Eprom change and new software load.
http://www.g6lvb.com/Articles/LVBTracker2/index.htm
73,
Angelo
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If you don't ask, you will never know!!
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From: APBIDDLE@UNITED.NET
To: faunt@panix.com; amsat-bb@amsat.org
Date: Thu, 5 Jan 2012 06:14:47 -0600
Subject: [amsat-bb] Re: Looking for a G3RUH dish
Doug,
FODTRACK does have a GPS input for the location.
http://ludens.cl/Electron/fodtrack/fodtrack.html
Note that it is a VERY old, DOS program, but according to the web page, with
some effort will work with Vista and presumably WIN7. FWIW
Alan
WA4SCA
-----Original Message-----
From: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org] On
Behalf Of Doug Faunt N6TQS +1-510-655-8604
Sent: Thursday, January 05, 2012 12:39 AM
To: amsat-bb@amsat.org
Subject: [amsat-bb] Re: Looking for a G3RUH dish
Speaking of which, can any of the available amateur software packages 
handle a moving ground station? I'd like to be able to automate the 
antenna tracking on a boat.
73, doug
On 05-Jan-12 05:55, Greg D. wrote:
...
Hi Bob,
I'm trying to visualize you driving (bouncing) down the freeway at 70 mph
with a square yard of curved (airfoil!) metal sitting at odd angles to the
air flow, trying to aim it at a target you may not be able to see clearly,
which is also moving at some rate in another direction, with an accuracy of
+/- a half dozen degrees (which is what you get with a dish that size). I
had a hard enough time aiming my 30 inch BBQ grill at AO-40, from my nearly
stationary house (this is California, after all), with up to date KEPS, a
rotor system calibrated earlier against the position of the Sun, NBS-sync'd
clock on a Linux PC, and so forth.
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Even if you mount the dish inside a camper minivan with a fiberglass roof
(think mobile Radome), I don't see how this is going to work. I've seen you
do amazing things, but what are you thinking?
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The best use of the dish would probably be to catch the balloon payload as
it falls from the sky...
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Greg KO6TH
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From: bruninga@usna.edu
To: k5oe@aol.com; amsat-bb@amsat.org
Date: Wed, 4 Jan 2012 17:54:02 -0500
Subject: [amsat-bb] Re: Looking for a G3RUH dish
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Regarding your Cu wire dish... you might look at
the Tek Sharp dishes as an easier alternative to "rolling your own."
We are after absolute minimum wind drag. I don't think the Tek dish
would
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survive accurate tracking while driving along the interstate at 70 PMPH
to
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catch a balloon. And we want it to be a good 3' by 4' dish... Need the
gain for the tiny wifi video link...
Bob
I picked one up on ebay about a year ago and put it in my attic...
waiting
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for amsat-dl :-)
http://www.plumdragon.com/teksharp/hr_AO-40_products.htm
Drew,
I have a spare PF dish about 60 cm, but it is steel, not aluminum like
the
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G3RUH. I used it on AO-40 for 24 GHz. Let me know off-list if you want
it.
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73,
Jerry, K5OE
---- previous message ----
You probably have one of the K5GNA "BBQ" dishes. The G3RUH is a solid
round
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spun dish.
73, Drew
-----Original Message-----
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From: Bob Bruningabruninga@usna.edu
Sent: Jan 3, 2012 2:19 PM
To: 'Andrew Glasbrenner'glasbrenner@mindspring.com, 'amsat-bb'
amsat-bb@amsat.org
Subject: RE: [amsat-bb] Looking for a G3RUH dish
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I'm looking for one of the 60cm G3RUH dishes
Got one, (but not available).
Questions: I measured reflector grid separation as .88 inches which
works
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out to be about 0.18 wavelength. I always thought the grid had to be
tighter than 0.1 inches to be an effective "surface".
Maybe the difference with almost double the spacing is not that
significant?
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(especially for a steel one which would be quite heavy.
Reason I am asking is that I also need another S band dish (at 70 MPH on
the
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roof of a tracking van) and we are thinking about building one by using
an
...
...
...
old solid 6' TVRO dish as a form and laying in copper wire and soldering
it
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to copper straps. With all that labor, I'd not want to get the spacing
wrong.
Bob, Wb4APR

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...
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Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author.
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Angelo Glorioso

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