[amsat-bb] I dont buy that!!
Luc Leblanc VE2DWE
lucleblanc6 at videotron.ca
Fri Sep 8 01:02:01 PDT 2006
On 7 Sep 2006 at 21:40, Jim Sanford wrote:
> The conclusion is that S-band is marginally
> useful as a downlink today (unusable in many locations), and by the time
> Eagle is launched, and through it's lifetime, will be unusable.
> Personally, I do not like this decision. I have S-band equipment that I
> was looking forward to using.
AMSAT-NA should step forward here and rule out about EXPERIMENTING VS OPERATING. Nobody will be
against experimenting that's always be the roots of amateur radio. But when "operating" need a
relay "satellite" to achieve communication the first goal is to learn from the past and see what
the "USERS" wants!
>Your Eagle team is
> working hard to develop a system that will serve our needs, as well as
> advance the state of the art. As promised, we are making decisions
> based on sound, peer-reviewed science, not anybody's opinions or desires.
*****not anybody's opinions or desires***** Here is the problem The eagle team should not be let
alone in theses decisions. The AMSAT-NA BOD should have a VETO here. All final decisions regarding
the satellite construction should be validated by the BOD. It is a serious decision making flaw as
there is no balance between the users desires and the technical builders because all the decisions
regarding the construction are made by the builders. Its like to be the judge and the lawyer at the
same time it is not sound. Remember theses words *****not anybody's opinions or desires*****
> As one of you commented this evening, AO-40 wasn't exactly a rock
> crusher on S-band. It worked, and adequately, at least on CW, but was
> not great. As I reflect on my personal AO-40 experiences.
Those who makes like me more than a 1000 contacts on AO-40 in the U/S mode and they can affirm that
near 70% of theses contacts where as good than all what can we hear actually with all the LEO
including ECHO raise your hands. Yes there was problems LEILA RADAR bootleggers taxi fishing boat
and so on but even with this i learn since 1971 the beginning of my Ham "career" that i should
always try to have a station with at least the average equipment to be able to work and enjoy the
"communication" Yes huge HF beam, a kilowatt, preamp and so on.
I am sorry to tell your personal AO-40 experiences are far away with my personnal experiences and
if the EAGLE team based their reasoning this way it is urgent the BOD start to VETO the eagle team
on their final decision.
> A few have raised the old allegation of the builders doing what they
> want, without regard to users needs. This is not true. While the
> desire to advance the state of the art (part of amateur radio's
> justification for existence and allocation of valuable spectrum)
>We started with requirements and services, and explored what would deliver.
Fine but communicating is the ultimate goals for all the users. "Looking towards the desire to
advance the state of the art" for technically incline amateur should not be done against the users
EG:> Why not also include a (switchable) S-band downlink in parallel with the
> V-band? Remember, no switches.
Sure if there is an always on S band receiver the only one solution is to get rid of the S band TX
simple maths here...and there is no concern about all the existing S band equipment that many of us
hardly constructed with often very scarce financial ressources. As one said it is a terrible
marketing error. Here again the BOD should act on this.
>A goal of Eagle has always been some kind of hand-held
> or jump bag portable ground station capability for entry into the
> emergency area while the tsunami waters are receeding and the hurricane
> winds are down to gale force.
It is an utopy a fixation "the HT syndrome" how would you be able to sustain reliable
communications when the power is out and the zone is devastated? Its good on papers and on the
media but reality is quite different.
Mode S-U-V are as you said the bread and butter on the downlink and i agree with you. Eagle should
keep theses mode but in this forcing the "experimenting" leads and the users loose. Will they be
there tomorrow? question ask?
>Please recognize that we're volunteers too, and subject to the realities of day jobs, families,
and a real life.
Yes we all but your involvment is not questionned here.
The medium is the message...The content is the audience...;)
Luc Leblanc VE2DWE
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