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CX2SA > SATDIG 19.06.08 05:25l 891 Lines 31064 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Spanish cubesat (ANTHONY JAPHA)
2. Re: LEO's (Mark Vandewettering)
3. Re: LEO's (John AA5JG)
4. Eagle? (ANTHONY JAPHA)
5. Re: JUBILEE and other frustrations (Graham Shirville)
6. Re: LEO's (w7lrd(AT)comcast.net)
7. Re: LEO's (John Wright)
8. Re: Spanish cubesat (cathrynham)
9. Re: Eagle? (JoAnne Maenpaa)
10. Re: LEO's (Andrew Glasbrenner)
11. Re: LEO's (i8cvs)
12. Re: Eagle? (ANTHONY JAPHA)
13. Re: FO-29 and Field Day? (kc6uqh)
14. (no subject) (Tom Clark, K3IO)
15. Re: Message from Tom Clark (Stefan Wagener)
----------------------------------------------------------------------
Message: 1
Date: Wed, 18 Jun 2008 15:38:39 -0400
From: "ANTHONY JAPHA" <tjjapha(AT)earthlink.net>
Subject: [amsat-bb] Spanish cubesat
To: "amsat-bb" <amsat-bb(AT)amsat.org>
Message-ID: <380-220086318193839234(AT)earthlink.net>
Content-Type: text/plain; charset=US-ASCII
My vote is for a linear transponder. Hope there's enough power and space for
that. If there is, it would set a very nice precedent for a fair price to pay
for using ham frequencies.
Thanks for asking.
73,
Tony, N2UN
------------------------------
Message: 2
Date: Wed, 18 Jun 2008 12:49:56 -0700
From: Mark Vandewettering <kf6kyi(AT)gmail.com>
Subject: [amsat-bb] Re: LEO's
To: AMSAT-BB <amsat-bb(AT)amsat.org>
Message-ID: <14C65322-B4C8-45FB-BC53-58089518E686(AT)gmail.com>
Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes
On Jun 18, 2008, at 2:46 AM, i8cvs wrote:
> Hi Art, KC6UQH
>
> You are correct 100% because the HEO AO40 was very easy to work
> using any old TX capable to run about 50 to 100 watt into 70 cm CW
> and SSB
>
> A 3 to 4 foot dish with a 2400/144 MHz downconverter in the focal
> point and
> connected to any old 144 MHz CW/SSB receiver mounted on the balcony
> was
> sufficient to receive a nice downlink from all over the world by
> many users
> at the same time for many hours every day.
>
> No complicated TX/RX radios and special software was necessary to
> compensate
> for doppler just made by hand.
Well, sure, if you want to reduce ham radio to just keying the mic,
leisurely yapping along for hours at a time, then by all means, let's
have more satellites in HEO. But where's the skill in that?
Hell, you don't even need to know what Doppler is with these easy HEO
satellites. If you want to take the easy way out though...
Mark KF6KYI
> _______________________________________________
> Sent via AMSAT-BB(AT)amsat.org. Opinions expressed are those of the
> author.
> Not an AMSAT-NA member? Join now to support the amateur satellite
> program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 3
Date: Wed, 18 Jun 2008 15:02:35 -0500
From: "John AA5JG" <aa5jg(AT)lcisp.com>
Subject: [amsat-bb] Re: LEO's
To: AMSAT-BB <amsat-bb(AT)amsat.org>, Mark Vandewettering
<kf6kyi(AT)gmail.com>
Message-ID: <200806181502.AA746979620(AT)lcisp.com>
Content-Type: text/plain; charset=us-ascii
>
>On Jun 18, 2008, at 2:46 AM, i8cvs wrote:
>
>>
>> A 3 to 4 foot dish with a 2400/144 MHz downconverter in the focal
>> point and
>> connected to any old 144 MHz CW/SSB receiver mounted on the balcony
>> was
>> sufficient to receive a nice downlink from all over the world by
>> many users
Yeah, and most of us, especially new hams, just happen to have a 3 to 4 foot
dish laying around.
73s John AA5JG
________________________________________________________________
------------------------------
Message: 4
Date: Wed, 18 Jun 2008 16:11:39 -0400
From: "ANTHONY JAPHA" <tjjapha(AT)earthlink.net>
Subject: [amsat-bb] Eagle?
To: "amsat-bb" <amsat-bb(AT)amsat.org>
Message-ID: <380-220086318201139390(AT)earthlink.net>
Content-Type: text/plain; charset=US-ASCII
I guess there's still an Eagle sometime in our future, but seeing no mention
at all of it in the most recent Newsletter is disconcerting. As our most
important project, shouldn't we have updates in every Newsletter? For
example, is there any news about the Intelsat connection that was introduced
several months ago?
By the way, the writeup currently on the Amsat home page mentions ACP with a
3.4 Ghz (sic) downlink. Just a misprint? The nice Eagle flyer shows both up-
and downlink on 5.6 Ghz.
Most important. of course, is the projected date for completion of Eagle.
Maybe it can't be completely finished before the launch is determined, but the
transponders have been identified for some time now. Chicken and egg problems
are solved by producing either a chicken or an egg and then nurturing the
other. Right now, we have neither. When do we expect to have our chicken,
i.e. a complete electronics package?
I have great admiration for our designers and builders, and I also think that
we should have some more visible time targets. If funding is an immediate
issue that is limiting design and construction, or if it will be an issue in
the near future, we should also to informed about that situation.
Tnx and 73,
Tony, N2UN
------------------------------
Message: 5
Date: Wed, 18 Jun 2008 21:47:02 +0100
From: "Graham Shirville" <g.shirville(AT)btinternet.com>
Subject: [amsat-bb] Re: JUBILEE and other frustrations
To: <bruninga(AT)usna.edu>, <amsat-bb(AT)amsat.org>
Message-ID: <019501c8d184$770120b0$76e2f14d(AT)allgood.local>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Amen Bob
----- Original Message -----
From: "Robert Bruninga" <bruninga(AT)usna.edu>
To: <amsat-bb(AT)amsat.org>
Sent: Thursday, May 29, 2008 3:00 PM
Subject: [amsat-bb] Re: JUBILEE and other frustrations
>> There seems to be a proliferation of satellites
>> using the Amateur bands as cheap down links,
>> and using Radio Amateurs as a cheap way of
>> collecting their data. It is MY personal belief
>> that a satellite should only use our hard-earned
>> and much coveted frequencies if they REALLY do
>> carry an Amateur Radio payload... I.E.
>> a Transponder!
>
> While I too like to see transponders, I do not like to see all
> the negativizim, hate and rabble-rousing against those who
> actually get something into space. The self-richeous nay-saying
> comments are about as practical as these:
>
> "Those HF contesters should not be using the Amateur Bands, they
> should be passing useful communications or traffic!"
>
> "Those Traffic passers are not real amateur operators, because
> they will not respond with QSL's!"
>
> "Those old fud rag chewers on HF think they own the frequency.
> They should let others use the frequency for more useful
> communications"
>
> "Those FM commuters are just wasting air time, saying the same
> old thing every day. Why don't they just use a cell phone!"
>
> "Those AM guys are just wasting 6 KHz of spectrum, they should
> be made illegal on the amateur bands"
>
> "Who wants to look at all those SSTV pictures, Its just the
> same old post-card! They should not be using 3 KHz of bandwidth
> for such stupid applications"...
>
> "Those Winlink guys are killing amateur radio by turning the
> bands into an automatic communications system."
>
> "Those Echolink and IRLP links are bad for ham radio. Why don't
> they just use HF or a phone if they want to talk to someone far
> away."
>
> "Those Radio control Airplanes operating on the Amateur band
> should never be there, they are not communications".
>
> "Those experimental Balloons just transmit pictures and
> telemetry, without a transponder, they have no purpose in
> Amateur Radio"
>
> And on and on...
>
> Face, it.. Ham radio is as rich in applications as there are
> innovative and resourceful people. If you want something done,
> then go do it. If you don't like what others are doing with
> their hobby, then get out of the way.
>
> Public negativizim and constant complaining never accomplishes
> anything except darken our collective hobby. Save that for the
> politicians who are supposed to respond to their constituents.
> For a hobby that is just the collective "us" with each licensed
> individual having the same equal opportunities as everyone else,
> complaining about what others do is just pointless.
>
> Bob, WB4APR
>
> _______________________________________________
> Sent via AMSAT-BB(AT)amsat.org. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 6
Date: Wed, 18 Jun 2008 22:27:44 +0000
From: w7lrd(AT)comcast.net
Subject: [amsat-bb] Re: LEO's
To: aa5jg(AT)lcisp.com, AMSAT-BB <amsat-bb(AT)amsat.org>, Mark
Vandewettering <kf6kyi(AT)gmail.com>
Message-ID:
<061820082227.15158.48598BE00007844600003B3622165662760B9D04C999(AT)comc
ast.net>
Content-Type: text/plain
Hi John and all
Look around your neighborhood and I'll bet you will find an old primestar dish
staring aimlessly at the sky. These can be had just for the asking. Right
now I can drive over to about 5 of them. That with a 3731AA downconverter
from K5GNA, and a simple 5 turn helix, you to can receive S band.
73 Bob W7LRD
Seattle
--
"if this were easy, everyone would be doing it"
-------------- Original message --------------
From: "John AA5JG" <aa5jg(AT)lcisp.com>
>
>
>
> >
> >On Jun 18, 2008, at 2:46 AM, i8cvs wrote:
> >
> >>
> >> A 3 to 4 foot dish with a 2400/144 MHz downconverter in the focal
> >> point and
> >> connected to any old 144 MHz CW/SSB receiver mounted on the balcony
> >> was
> >> sufficient to receive a nice downlink from all over the world by
> >> many users
>
>
> Yeah, and most of us, especially new hams, just happen to have a 3 to 4 foot
> dish laying around.
>
> 73s John AA5JG
>
> ________________________________________________________________
>
>
>
>
>
> _______________________________________________
> Sent via AMSAT-BB(AT)amsat.org. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 7
Date: Thu, 19 Jun 2008 00:05:38 +0100
From: John Wright <ham(AT)g4dmf.co.uk>
Subject: [amsat-bb] Re: LEO's
To: amsat-bb(AT)amsat.org
Message-ID: <0ML21M-1K96jD3YmC-0000dl(AT)mrelayeu.kundenserver.de>
Content-Type: text/plain; charset="iso-8859-1"; format=flowed
At 21:02 18/06/2008, you wrote:
> >
> >On Jun 18, 2008, at 2:46 AM, i8cvs wrote:
> >
> >>
> >> A 3 to 4 foot dish with a 2400/144 MHz downconverter in the focal
> >> point and
> >> connected to any old 144 MHz CW/SSB receiver mounted on the balcony
> >> was
> >> sufficient to receive a nice downlink from all over the world by
> >> many users
>
>
>Yeah, and most of us, especially new hams, just
>happen to have a 3 to 4 foot dish laying around.
>
>73s John AA5JG
HEO KIT...
60 cm offset dish... FREE at local refuse site,
thousands of them being thrown away every year in
most non third-world countries
Down convertor was about $25 off ebay,.. OK may be a bit more now
144 Mhz radio you already have
total cost to receive AO40.. probably $50 ( about ?25 UK )
RIP AO-40... one day... in another era... it may
do an AO-7 "resurrection"..... You can only hope!
http://www.g4dmf.co.uk/dish/60cm_1.jpg
60cm dish on work-mate...
John
G4DMF
------------------------------
Message: 8
Date: Wed, 18 Jun 2008 15:31:11 -0700
From: cathrynham <cathrynm(AT)junglevision.com>
Subject: [amsat-bb] Re: Spanish cubesat
Cc: amsat-bb <amsat-bb(AT)amsat.org>
Message-ID: <48598CAF.10608(AT)junglevision.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
ANTHONY JAPHA wrote:
> My vote is for a linear transponder. Hope there's enough power and space
for that. If there is, it would set a very nice precedent for a fair price to
pay for using ham frequencies.
> Thanks for asking.
> 73,
This is a silly idea, but what's the math as far as an AM transponder?
AM would have less of the capture effect -- maybe weak signals might
be audible, though maybe not intelligible. Could possibly result in
simpler, no-doppler ground stations. Don't some of the HT's support
AM these days?
Another idea I had, four FM receivers, one transmitters. The inputs just
mix together on the satellite. The power all goes into the
one transmitter, and gives more chance for multiple people to exchange
calls. The big guns can have their long chat, and then the other callsigns
that people are exchanging would just be heard on top of the
conversation when they send to the other receivers. I've heard
this kind of thing on ssb.
------------------------------
Message: 9
Date: Wed, 18 Jun 2008 19:00:58 -0500
From: "JoAnne Maenpaa" <k9jkm(AT)comcast.net>
Subject: [amsat-bb] Re: Eagle?
To: <tjjapha(AT)earthlink.net>, "'amsat-bb'" <amsat-bb(AT)amsat.org>
Message-ID: <001401c8d19f$8f4a0fe0$adde2fa0$(AT)net>
Content-Type: text/plain; charset="us-ascii"
Hello Tony,
> By the way, the writeup currently on the Amsat home page mentions ACP
> with a 3.4 Ghz (sic) downlink. Just a misprint? The nice Eagle flyer
> shows both up- and downlink on 5.6 Ghz.
Perhaps these links will reveal the current system configuration:
Summary description of the microwave utilization:
http://www.delmarnorth.com/namaste/Namaste_Overview_Microwave.pdf
Project Namaste general information:
http://www.amsat.org/namaste (this link is also mentioned in the ACP article
on the AMSAT home page.)
Hope this helps!
--
73 de JoAnne K9JKM
k9jkm(AT)amsat.org
------------------------------
Message: 10
Date: Wed, 18 Jun 2008 20:24:04 -0400
From: "Andrew Glasbrenner" <glasbrenner(AT)mindspring.com>
Subject: [amsat-bb] Re: LEO's
To: <amsat-bb(AT)amsat.org>
Message-ID: <4A75C260955E43A8852BDA8744763C3E(AT)Andrewlaptop>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
I think this is a silly argument, there is a time and place for both HEOs
and LEOs, and each has it's good and bad points. However, I love antenna
pictures, so I'll see your junkyard dish with
http://i139.photobucket.com/albums/q305/glasbrenner/DSC00377.jpg and raise
you an Arrow on a tripod
http://i139.photobucket.com/albums/q305/glasbrenner/DSC00379.jpg . These
are from my VP2EAG operation in 2003.
73, Drew KO4MA
------------------------------
Message: 11
Date: Thu, 19 Jun 2008 02:38:53 +0200
From: "i8cvs" <domenico.i8cvs(AT)tin.it>
Subject: [amsat-bb] Re: LEO's
To: "Mark Vandewettering" <kf6kyi(AT)gmail.com>, "AMSAT-BB"
<amsat-bb(AT)amsat.org>
Message-ID: <003401c8d1a4$da768020$0201a8c0(AT)tin.it>
Content-Type: text/plain; charset="iso-8859-1"
----- Original Message -----
From: "Mark Vandewettering" <kf6kyi(AT)gmail.com>
To: "AMSAT-BB" <amsat-bb(AT)amsat.org>
Sent: Wednesday, June 18, 2008 9:49 PM
Subject: [amsat-bb] Re: LEO's
>
> On Jun 18, 2008, at 2:46 AM, i8cvs wrote:
>
> > Hi Art, KC6UQH
> >
> > You are correct 100% because the HEO AO40 was very easy to work
> > using any old TX capable to run about 50 to 100 watt into 70 cm CW
> > and SSB
> >
> > A 3 to 4 foot dish with a 2400/144 MHz downconverter in the focal
> > point and
> > connected to any old 144 MHz CW/SSB receiver mounted on the balcony
> > was
> > sufficient to receive a nice downlink from all over the world by
> > many users
> > at the same time for many hours every day.
> >
> > No complicated TX/RX radios and special software was necessary to
> > compensate
> > for doppler just made by hand.
>
> Well, sure, if you want to reduce ham radio to just keying the mic,
> leisurely yapping along for hours at a time, then by all means, let's
> have more satellites in HEO. But where's the skill in that?
>
Hi Mark, KF6KYI
The skill is in building about everyting by yourself like low noise
preamplifiers for 2 meters, 70 cm, 13 cm and high dinamic range
downconverters for the above bands plus an Automatic Noise Figure
Meters to get the best Noise Figure, build transverters from 2 meters up
to the MW, build different type of feed for dishes having hours to test
their efficiency through the HEO satellite in cooperation to many and
many experimenters worldwide and discuss the problems with them
improving your knoledge in radio-technique.
Probably to build about everyting by your self for a satellite for all
like an HEO make you a real experimenter because if you are not
succesfull you cannot send the equipment to the manufacturer but you
are obliged to study your problem by your self looking and reasoning
over your own schematic diagrams.
When OSCAR-10, OSCAR-13 and AO40 where alive and well we all
were assisted in solving our technical problems by some well know teachers
and radio scientists every day on this BB like James Miller G3RUH,
Charles Suckling, G3WDG and Tom Clark W3IWI now K3IO but
unfortunately they actually desappeared from this BB because they are
not anymore interested to discuss about the technical level and matters
actually seen on this BB.
Read please into the AMSAT-BB archive and compare the importance of both
technical and operating contents of messages at time in wich OSCAR-10
OSCAR-13 and AO40 were operational and I am sure that you will learn
more and more about the purposes of the Satellite Amateur Radio for the
benefit of your own skill.
> Hell, you don't even need to know what Doppler is with these easy HEO
> satellites. If you want to take the easy way out though...
Every experimenter know what the Doppler is but if you like to make your
life difficult with Doppler for a few minutes QSO having the time to only
say.......Five.......Nine.......class.......class !
and then come into this BB asking for the call letter of the guy you suppose
have made a QSO then it is better to stay with the FM satellites !
>
> Mark KF6KYI
>
Best 73" de
i8CVS Domenico
------------------------------
Message: 12
Date: Wed, 18 Jun 2008 20:50:23 -0400
From: "ANTHONY JAPHA" <tjjapha(AT)earthlink.net>
Subject: [amsat-bb] Re: Eagle?
To: "JoAnne Maenpaa" <k9jkm(AT)comcast.net>, "amsat-bb"
<amsat-bb(AT)amsat.org>
Message-ID: <380-22008641905023546(AT)earthlink.net>
Content-Type: text/plain; charset=US-ASCII
Thanks JoAnne. I'm sure it's a great team.
What's troubling is that the fullscale development effort will take a great
deal of time. I had assumed, obviously incorrectly, that the development
process was much further along than it appears to be. It may not be
possible to project critical dates so early in the process, but the Cubs
may show up in the World Series before this transponder is done--and I
don't mean this year!
What would be the impact on the completion date for Eagle (and the Intelsat
transponder) if this ambitious piece of work was aimed instead at the
following HEO? If our membership had some dates there could be an informed
discussion of the options. There has been a lot of enthusiasm for a 5.6Ghz
groundbreaking transponder, but its cost, in terms both of dollars AND
TIME, must be considered as well. Will the development of this transponder
delay our HEO beyond what is acceptable or not?
As planned, can anything be produced ready to launch within 5 years?
What's the outlook?
73,
Tony, N2UN
> [Original Message]
> From: JoAnne Maenpaa <k9jkm(AT)comcast.net>
> To: <tjjapha(AT)earthlink.net>; amsat-bb <amsat-bb(AT)AMSAT.Org>
> Date: 6/18/2008 7:59:52 PM
> Subject: RE: [amsat-bb] Eagle?
>
> Hello Tony,
>
> > By the way, the writeup currently on the Amsat home page mentions ACP
> > with a 3.4 Ghz (sic) downlink. Just a misprint? The nice Eagle flyer
> > shows both up- and downlink on 5.6 Ghz.
>
> Perhaps these links will reveal the current system configuration:
>
> Summary description of the microwave utilization:
> http://www.delmarnorth.com/namaste/Namaste_Overview_Microwave.pdf
>
> Project Namaste general information:
> http://www.amsat.org/namaste (this link is also mentioned in the ACP
article
> on the AMSAT home page.)
>
> Hope this helps!
> --
> 73 de JoAnne K9JKM
> k9jkm(AT)amsat.org
>
>
------------------------------
Message: 13
Date: Wed, 18 Jun 2008 19:23:05 -0700
From: "kc6uqh" <kc6uqh(AT)cox.net>
Subject: [amsat-bb] Re: FO-29 and Field Day?
To: <amsat-bb(AT)wd9ewk.net>, <amsat-bb(AT)amsat.org>
Message-ID: <007601c8d1b3$6803cd90$0200a8c0(AT)kc6uqh>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
I plan to be on VO-52 for Field Day, working the Satellite station for the
Palomar Amateur Radio Club and using the Club Call W6NWG Schedule was sent
out for FO-29 It should be on for Field Day and I will try it too.
See copy below:
"From: Mineo Wakita <ei7m-wkt(AT)asahi-net.or.jp>
Subject: [amsat-bb] FO-29 Schedule June
To: pbaudino(AT)formatnet.it
Cc: amsat-bb(AT)amsat.org
Date: Sunday, June 15, 2008, 5:01 AM
June UTC
14 2:13 -
15 1:18 -
16 none
17 1:15 -
18 2:03 -
19 2:55 -
20 2:00 -
21 2:50 -
22 1:55 -
23 none
24 1:50 -
25 2:40 -
26 1:45 -
27 2:35 -
28 1:40 -
29 2:31 -
30 none
July UTC
1 2:25 -
2 1:30 -
de JE9PEL, Mineo Wakita"
Art,
KC6UQH
----- Original Message -----
From: "Patrick STODDARD (WD9EWK/VA7EWK)" <amsat-bb(AT)wd9ewk.net>
To: <amsat-bb(AT)AMSAT.Org>
Sent: Tuesday, June 17, 2008 9:44 PM
Subject: [amsat-bb] Re: FO-29 and Field Day?
> Hi Chris!
>
>> For the past several years I have used FO-29 for field day. Is this sat
>> usable? The sat status appears that it is in a questionable state. I
>> have
>
> It looks like we won't be able to use FO-29. Since it started having
> problems, the Japanese have been turning it on for just passes near
> Japan.
>
>> never used a FM mode J sat for field day, and would assume that it would
>> turn into what CBer's call a key down contest, were the biggest amp wins
>> due
>> to the capture effect. It seems that mode J-FM birds are already crowded
>> during a regular day. I could only imagine that it would be very
>> difficult
>
> Yes, the FM birds are crowded during Field Day. With the 100-point
> satellite QSO bonus under the ARRL Field Day rules, there are many
> stations set up just to make the contact for those points. Low-power
> or QRP stations *can* make the contacts during Field Day, but it is
> much harder than on a normal weekend. Difficult, but not impossible.
>
>> to work during FD. I had listen to VO-52 during FD and noticed that
>> there
>> was not any FD traffic on the bird. Could we use this sat if FO-29 is
>> not
>> functional? If so, that is the satellite I plan on trying to work for
>> FD.
>> I miss RS-12/13 Good bird for FD.
>
> Any satellite is available for use during Field Day, including VO-52. If
> you plan on entering your log for either ARRL's or AMSAT's Field Day
> competition (or both), make sure to read through both sets of rules.
> There are some differences between them.
>
> I now have a new setup for the SSB birds, a pair of FT-817NDs,
> since I have not been successful using an AOR handheld receiver
> for the downlink. The receiver is more than sensitive enough, but
> could not tune in steps small enough to clearly hear the voices in
> SSB. I saw the two 817s work with VO-52 during a demo at
> Dayton in 2006, so I am confident I will make my first non-FM
> satellite QSO this weekend. Then, on to Field Day...
>
> Good luck and 73!
>
>
>
> Patrick WD9EWK/VA7EWK
> http://www.wd9ewk.net/
>
> (planning on a 1B/1-operator/battery QRP effort, on HF and satellites,
> from somewhere in Arizona for Field Day)
> _______________________________________________
> Sent via AMSAT-BB(AT)amsat.org. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 14
Date: Wed, 18 Jun 2008 22:32:58 -0400
From: "Tom Clark, K3IO" <tom.k3io(AT)gmail.com>
Subject: [amsat-bb] (no subject)
To: AMSAT BB <amsat-bb(AT)amsat.org>
Message-ID: <4859C55A.1070209(AT)verizon.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Domenico, I8CVS said
> When OSCAR-10, OSCAR-13 and AO40 where alive and well we all
> were assisted in solving our technical problems by some well know teachers
> and radio scientists every day on this BB like James Miller G3RUH,
> Charles Suckling, G3WDG and Tom Clark W3IWI now K3IO but
> unfortunately they actually desappeared from this BB because they are
> not anymore interested to discuss about the technical level and matters
> actually seen on this BB.
>
>
I won't speak for the others, but I am still here, reading all these
discussions. I choose to be very selective in my posting of comments
unless I have something positive to offer.
Regarding these current discussions, I am at a loss to understand why
the amateur community has become so self-centered that they cannot see
that we MUST pursue programs that involve the education of new. young
and enthusiastic amateurs to carry on the hobby in the future. The
frequencies do not BELONG to us, they are merely entrusted to us to do
good deeds for humanity. As far as I am concerned, unless we encourage
projects like the Cubesats, then amateur radio est morte.
I am also dismayed at the "linear vs FM" diatribes that seem to go on
unabated. I was a major player in the decision for AMSAT-NA to pursue
AO-51 because we needed a simple, short-term project to keep the
organization alive. We solicited the contribution of a linear
transponder and no one, none, zip, Nada was offered. NBFM hardware was
available, so it flew. It was disappointing for me to learn that there
was no one in the USA, Canada or Mexico (the "turf" of AMSAT-NA) who
could tackle the building of such a simple piece of RF hardware.
One piece of news on the linear transponder front that I do want to
mention. This past weekend we had a small technical meeting to
understand the status of Suitsat-2 -- like the first Suitsat, this will
involve putting radio equipment on an out-of-warranty Russian ORLON
space suit, stuffing the legs with dirty clothes, and pushing it out of
the hold of the Space Station. The current plans for Suitsat-2 include a
low-powered Software Defined Transponder (SDX) with 70 cm in & 2M out.
The linear transponder passband will be 20-25 kHz wide. Some of you who
were at Dayton may have seen some of the Suitsat/SDX hardware running on
the air. The satellite demo folks (W5IU, N8MH) in the parking lot
demonstrated it working to many folks. The SDX activity is being done
under the auspices of the High Performance SDR (HPSDR) group which has
AMSAT & TAPR sponsorship. An early version of the "Odyssey" SDX can be
seen at http://hpsdr.org/wiki/index.php?title=ODYSSEY. All along, we
have been hoping that we can make a version of the Odyssey SDX be small
enough to fit into a Cubesat.
And so Domenico, despite your statement, I'm still here!
73 de Tom, K3IO (ex W3IWI)
------------------------------
Message: 15
Date: Wed, 18 Jun 2008 21:50:02 -0500
From: "Stefan Wagener" <stefan_wagener(AT)hotmail.com>
Subject: [amsat-bb] Re: Message from Tom Clark
To: <k3io(AT)verizon.net>, "'AMSAT BB'" <amsat-bb(AT)amsat.org>
Message-ID: <BAY130-DAV7F8C0B2B49A0FD46B8EE9F6AA0(AT)phx.gbl>
Content-Type: text/plain; charset="us-ascii"
Thanks Tom,
I hope that your message is clearly heard and we can finally move on.
All the best and thanks for your tireless efforts.
Stefan, VE4NSA
-----Original Message-----
From: amsat-bb-bounces(AT)amsat.org [mailto:amsat-bb-bounces(AT)amsat.org] On
Behalf Of Tom Clark, K3IO
Sent: June-18-08 9:33 PM
To: AMSAT BB
Subject: [amsat-bb] (no subject)
Domenico, I8CVS said
> When OSCAR-10, OSCAR-13 and AO40 where alive and well we all
> were assisted in solving our technical problems by some well know teachers
> and radio scientists every day on this BB like James Miller G3RUH,
> Charles Suckling, G3WDG and Tom Clark W3IWI now K3IO but
> unfortunately they actually desappeared from this BB because they are
> not anymore interested to discuss about the technical level and matters
> actually seen on this BB.
>
>
I won't speak for the others, but I am still here, reading all these
discussions. I choose to be very selective in my posting of comments
unless I have something positive to offer.
Regarding these current discussions, I am at a loss to understand why
the amateur community has become so self-centered that they cannot see
that we MUST pursue programs that involve the education of new. young
and enthusiastic amateurs to carry on the hobby in the future. The
frequencies do not BELONG to us, they are merely entrusted to us to do
good deeds for humanity. As far as I am concerned, unless we encourage
projects like the Cubesats, then amateur radio est morte.
I am also dismayed at the "linear vs FM" diatribes that seem to go on
unabated. I was a major player in the decision for AMSAT-NA to pursue
AO-51 because we needed a simple, short-term project to keep the
organization alive. We solicited the contribution of a linear
transponder and no one, none, zip, Nada was offered. NBFM hardware was
available, so it flew. It was disappointing for me to learn that there
was no one in the USA, Canada or Mexico (the "turf" of AMSAT-NA) who
could tackle the building of such a simple piece of RF hardware.
One piece of news on the linear transponder front that I do want to
mention. This past weekend we had a small technical meeting to
understand the status of Suitsat-2 -- like the first Suitsat, this will
involve putting radio equipment on an out-of-warranty Russian ORLON
space suit, stuffing the legs with dirty clothes, and pushing it out of
the hold of the Space Station. The current plans for Suitsat-2 include a
low-powered Software Defined Transponder (SDX) with 70 cm in & 2M out.
The linear transponder passband will be 20-25 kHz wide. Some of you who
were at Dayton may have seen some of the Suitsat/SDX hardware running on
the air. The satellite demo folks (W5IU, N8MH) in the parking lot
demonstrated it working to many folks. The SDX activity is being done
under the auspices of the High Performance SDR (HPSDR) group which has
AMSAT & TAPR sponsorship. An early version of the "Odyssey" SDX can be
seen at http://hpsdr.org/wiki/index.php?title=ODYSSEY. All along, we
have been hoping that we can make a version of the Odyssey SDX be small
enough to fit into a Cubesat.
And so Domenico, despite your statement, I'm still here!
73 de Tom, K3IO (ex W3IWI)
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------------------------------
_______________________________________________
Sent via amsat-bb(AT)amsat.org. Opinions expressed are those of the author.
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End of AMSAT-BB Digest, Vol 3, Issue 307
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