[amsat-bb] Re: S band interference solution

John Champa k8ocl at hotmail.com
Sat Oct 7 05:17:53 PDT 2006


If I wrote anything that offended the Engineering Team in any way 
whatsoever, you have my sincere apology.  The AMSAT Engineers literally give 
of their lives to make this dream possible for the rest of us to enjoy.  
They deserve nothing but our highest respect and consideration.

Just to make certain their are no hard feelings, my 3 figure donation is on 
the way to AMSAT.

Vy 73,
John - K8OCL

>From: Robert McGwier <rwmcgwier at comcast.net>
>To: Dave Guimont <dguimon1 at san.rr.com>
>CC: amsat-bb at amsat.org
>Subject: [amsat-bb] Re: S band interference solution
>Date: Fri, 06 Oct 2006 21:03:32 -0400
>Dear AMSAT friends:
>I would like to thank all of you for your wonderful positive support.  I
>am on the 100-th hour I have given to AMSAT this week.  In the next
>three weeks I wil spend four days doing mechanical design work on Eagle
>and four days doing computer work for Phase 3E and Eagle where we are
>attempting to bring up the computer bus system that will control the
>Your constructive criticism, based on nearly completely FALSE
>information,  has been a major source of inspiration for many VOLUNTEERS
>who do this work
>The engineers recommended to the AMSAT-NA board of directors that we
>adopt a U/V/L/S standard transponder set for linear operation based upon
>SDX in its primary form. THIS IS A LINEAR TRANSPONDER SUITE.  Our
>current calculations show that on V band it will be much louder than
>AO-13 and slightly louder than P3E on V.  On S band downlink for Eagle
>we will be MUCH louder than AO-13 and significantly louder than AO-40.
>The advanced communications package recommended to the AMSAT BOD will
>use two uplinks,  L band and 3.4 GHZ.  It has a proposed C band
>downlink.  The system design proposes the use of the SAME 60cm dish that
>many of you have purchased from James Miller or Dave Olean will work
>perfectly with a proposed dual band feed/widget we are proposing and
>will design.  The details of this work will be forthcoming in the next
>few months.
>The user will need your AO-13/AO-40 station to operate the V/U/L/S
>packages and widget that you will not be able to easily build but will
>be able to purchase from some group like TAPR or Ettus or AMSAT.  The
>single most expensive decision we have made is to have sufficient solar
>arrays to support both packages.
>Please expect to see lots of details from us.  An official announcement
>from the organization will appear on ANS and AMSAT web site shortly.  I
>have requested a lot of money from the AMSAT board of directors to begin
>real work on details of this during the year 2007.  This is in addition
>to the budget we have requested for our support activities for P3E.
>Irrespective of all of the things said here about me and the
>unbelievable collection of the most high powered technical team we have
>assembled in a long time,  we continue to work hard on your behalf.  I
>am really personally disappointed in the level of discourse in the AMSAT
>BB.   It is extremely harmful, possibly beyond repair, to our
>organization.  We are seeking serious external funding, and we need to
>make a significant investment in many areas to get this spacecraft
>built.  I have never been prouder of where the AMSAT-NA and AMSAT-DL
>engineers are going on your behalf than I am right now. I am very
>disappointed in the members of this forum.  It is so damaging to our
>public image that if this does not improve and significantly,  I will
>have to recommend that we end its current form.  You are hurting your
>fellow satellite users and the VERY small number of volunteers who make
>serious personal sacrifices to build these things, and much larger
>number of volunteers who daily make quiet personal efforts in near
>silence on all our behalf.  In my opinion, there is not a single member
>of the included thread who can hold their heads high and be proud of it.
>Let me remind you once again.  NO ONE speaks for AMSAT-NA outside of the
>entire board of directors who make policy and the five or so bylaws
>enabled officers.  Anyone else may have influence.  But until you hear
>the outcome from official channels.  On P3E and AMSAT-DL,  NO ONE
>outside of Peter Guelzow is considered by me to represent AMSAT-DL or
>Heike Straube on P3E.
>In my opinion,  you owe the organization and the members of this forum
>an apology.  I don't care if none of you speak to me every again.  But
>the members of the engineering team and the volunteer supprters holding
>official positions have been ill served by this.
>Dave Guimont wrote:
> >
> >> On 5 Oct 2006 at 8:21, John Champa wrote:
> >>
> >>
> >>> I really do get bored reading about all these threats to Mode S from 
> >>> etc.
> >>>
> >>>
> >>> For a bunch of supposedly sophisticated wireless guys, you sure don't 
> >>> beans about
> >>> consumer grade wireless devices.  That includes our wonderfully 
> >>> but pessimistic AMSAT satellite engineers!
> >>>
> >
> > Luc wrote:
> >
> >
> >
> >> I agree... but it sometimes very hard to convince and ridicule may
> >> prove too much for some readers
> >> but it can be of some help for some stubborn minds who are not
> >> pessimistic but unrealistic.
> >>
> >>
> >
> >
> > Some of these guys would complain if they were hung with a new rope,
> > and I'll supply
> >
> >
> >
> >
> >             73, Dave wb6llo at amsat.org
> >                     Disagree: I learn....
> >
> >                Pulling for P3E...
> >
> >
> >
>AMSAT Director and VP Engineering. Member: ARRL, AMSAT-DL,
>"You see, wire telegraph is a kind of a very, very long cat.
>You pull his tail in New York and his head is meowing in Los
>Angeles. Do you understand this? And radio operates exactly
>the same way: you send signals here, they receive them there.
>The only difference is that there is no cat." - Einstein
>Sent via AMSAT-BB at amsat.org. Opinions expressed are those of the author.
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