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CX2SA > SATDIG 28.02.13 11:02l 718 Lines 24021 Bytes #999 (0) @ WW
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Today's Topics:
1. Re: fun with AO-7/FO-29 (Roger)
2. Mars Flight In 2018 (B J)
3. Re: Mars Flight In 2018 (Bob- W7LRD)
4. STRaND1 TLM decoder (Ken Swaggart)
5. STRaND-1 decoded over Brazil ! (Roland Zurmely)
6. Re: STRaND1 TLM decoder (Trevor .)
7. Re: inquiry about homebrew az-el systems (Gus)
8. Re: inquiry about homebrew az-el systems (Lizeth Norman)
9. Re: STRaND1 TLM decoder (Ken Swaggart)
10. Re: inquiry about homebrew az-el systems (Gus)
11. Re: inquiry about homebrew az-el systems (Lizeth Norman)
12. Re: inquiry about homebrew az-el systems (Gus)
13. Re: Mars Flight In 2018 (Edward R Cole)
14. Re: inquiry about homebrew az-el systems (Lizeth Norman)
15. Re: STRaND1 TLM decoder (Timothy Stranex)
16. Re: Mars Flight In 2018 (Trevor .)
----------------------------------------------------------------------
Message: 1
Date: Wed, 27 Feb 2013 15:16:25 -0500
From: Roger <Rogerkola@xxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: fun with AO-7/FO-29
Message-ID: <512E6999.1050003@xxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
So with a little mind numbing calculation, you might be able to set a
new distance record for satellite communications cross mode...If you
wanted to keep it pure you could use AFSK on AO-27 with CW on AO-7.
Roger
WA1KAT
On 2/27/2013 2:11 PM, Bob- W7LRD wrote:
> Hi all.
> An interesting observation this morning (in CN87) I coppied OH5LK on FO-29
calling CQ in CW at about 1840Z while uplinking to AO-7. FO-29 was out of
LK's footprint at the time. So ground to sat-to sat-to ground was observed.
The downlink of AO-7 is the uplink of FO-29. To complete a qso in that mode
one to tx and rx at the same time on 70cm. The mind goes numb!
> having fun
> 73 Bob W7LRD
>
------------------------------
Message: 2
Date: Wed, 27 Feb 2013 21:14:49 +0000
From: B J <va6bmj@xxxxx.xxx>
To: amsat-bb <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Mars Flight In 2018
Message-ID:
<CAP7QzkNwU-a9TFCqcAse1qU7MQVBpWETc==qEL_GG6bT+WL78w@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
http://moonandback.com/2013/02/27/dennis-tito-and-team-outline-audacious-plan-
for-mars-trip/
73s
Bernhard VA6BMJ @ DO33FL
------------------------------
Message: 3
Date: Wed, 27 Feb 2013 23:05:00 +0000 (UTC)
From: Bob- W7LRD <w7lrd@xxxxxxx.xxx>
To: B J <va6bmj@xxxxx.xxx>
Cc: amsat-bb <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Mars Flight In 2018
Message-ID:
<245872606.614331.1362006300286.JavaMail.root@xxxxxxx.xxxxxxxxxx.xx.xxxx.xxxxx
xx.xxx>
Content-Type: text/plain; charset=utf-8
they could take L & S band stuff, "real" dx!
73 Bob W7LRD
----- Original Message -----
From: "B J" <va6bmj@xxxxx.xxx>
To: "amsat-bb" <amsat-bb@xxxxx.xxx>
Sent: Wednesday, February 27, 2013 1:14:49 PM
Subject: [amsat-bb] Mars Flight In 2018
http://moonandback.com/2013/02/27/dennis-tito-and-team-outline-audacious-plan-
for-mars-trip/
73s
Bernhard VA6BMJ @ DO33FL
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. 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: 4
Date: Wed, 27 Feb 2013 15:32:07 -0800
From: "Ken Swaggart" <k.swaggart@xxxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] STRaND1 TLM decoder
Message-ID: <FF1E37635D38480F99184F9AE7124FF5@xxxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
Noticed that Mike, DK3WN, has a beta STRaND1 telemetry decoder available at:
http://www.dk3wn.info/software.shtml
Ken, W7KKE
------------------------------
Message: 5
Date: Wed, 27 Feb 2013 16:27:51 -0800 (PST)
From: Roland Zurmely <py4zbz@xxxxx.xxx>
To: AMSAT <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] STRaND-1 decoded over Brazil !
Message-ID:
<1362011271.7479.YahooMailNeo@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Please see here:
http://www.qsl.net/py4zbz/strand.htm
73 de Roland PY4ZBZ
------------------------------
Message: 6
Date: Thu, 28 Feb 2013 00:32:24 +0000 (GMT)
From: "Trevor ." <m5aka@xxxxx.xx.xx>
To: amsat-bb@xxxxx.xxxx Ken Swaggart <k.swaggart@xxxxxxx.xxx>
Subject: [amsat-bb] Re: STRaND1 TLM decoder
Message-ID:
<1362011544.76310.YahooMailClassic@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
I put the URL into Google language translator and the STRaND-1 TLM Decoder
disappeared, only seems present in the German text version.
73 Trevor M5AKA
--- On Wed, 27/2/13, Ken Swaggart <k.swaggart@xxxxxxx.xxx> wrote:
> Date: Wednesday, 27 February, 2013, 23:32
> Noticed that Mike, DK3WN, has a beta
> STRaND1 telemetry decoder available at:
>
> http://www.dk3wn.info/software.shtml
>
> Ken, W7KKE
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx.
> 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: Wed, 27 Feb 2013 21:30:36 -0400
From: Gus <8p6sm@xxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: inquiry about homebrew az-el systems
Message-ID: <512EB33C.8000905@xxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Returning to this topic...
I'm thinking about a rotator that can handle a small system like the
Arrow, or the Cushcraft A270-6s or even the A270-10s. NOT big boomers
like the KLM 22/40 el CP yagis!
So we're looking at 1? - 2 sq. ft of windloading, and maybe 10 lbs of
weight. (Including some sort of crossboom, clamps, coax and
counterweights. Rear mounted antennas like the Arrow will need a
rear-mounted counterweight.)
Anybody qualified to say what that adds up to in terms of TORQUE
required from the motors? With a little extra thrown in for a safety
margin, maybe?
I think a simple, low-cost, easily reproducible design is probably
doable, if we combine our ingenuity and expertise.
-- 73, de Gus 8P6SM
Barbados, the easternmost isle.
------------------------------
Message: 8
Date: Wed, 27 Feb 2013 20:56:49 -0500
From: Lizeth Norman <normanlizeth@xxxxx.xxx>
To: Gus <8p6sm@xxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: inquiry about homebrew az-el systems
Message-ID:
<CAJUhCTOf-B0PiwbcBHDt5=e21jzT2Uzio91Gt7ndhc_nC1OUuw@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Gus and the gang,
What about K5OE's array here:
http://rfanat.ru/s8/P3D_yagi.htm
Still think that using:
8x4 aluminum tube stock
1" aluminum round stock
1 arduino
4 relays
a 24 v ps
some limit switches
fuses, of course
two of the appropriate value pots and maybe some gearing
and a few gears, bearings and motors for the drivetrain,
should give us a complete -5400 or -5500 clone.
Norm n3ykf
On Wed, Feb 27, 2013 at 8:30 PM, Gus <8p6sm@xxxx.xxx> wrote:
> Returning to this topic...
>
> I'm thinking about a rotator that can handle a small system like the Arrow,
> or the Cushcraft A270-6s or even the A270-10s. NOT big boomers like the KLM
> 22/40 el CP yagis!
>
> So we're looking at 1? - 2 sq. ft of windloading, and maybe 10 lbs of
> weight. (Including some sort of crossboom, clamps, coax and counterweights.
> Rear mounted antennas like the Arrow will need a rear-mounted
> counterweight.)
>
> Anybody qualified to say what that adds up to in terms of TORQUE required
> from the motors? With a little extra thrown in for a safety margin, maybe?
>
> I think a simple, low-cost, easily reproducible design is probably doable,
> if we combine our ingenuity and expertise.
>
>
> -- 73, de Gus 8P6SM
> Barbados, the easternmost isle.
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. 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: 9
Date: Wed, 27 Feb 2013 18:05:17 -0800
From: "Ken Swaggart" <k.swaggart@xxxxxxx.xxx>
To: "Trevor ." <m5aka@xxxxx.xx.xx>, <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: STRaND1 TLM decoder
Message-ID: <9B8447BA09334562ABD4E7E64F6D12A2@xxxxxxx>
Content-Type: text/plain; format=flowed; charset="UTF-8";
reply-type=original
The Google translator translated "STRaND" to "Beach" !! It's there and
works great!
73,
Ken, W7KKE
-----Original Message-----
From: Trevor .
Sent: Wednesday, February 27, 2013 16:32
To: amsat-bb@xxxxx.xxx ; Ken Swaggart
Subject: Re: [amsat-bb] STRaND1 TLM decoder
I put the URL into Google language translator and the STRaND-1 TLM Decoder
disappeared, only seems present in the German text version.
73 Trevor M5AKA
--- On Wed, 27/2/13, Ken Swaggart <k.swaggart@xxxxxxx.xxx> wrote:
> Date: Wednesday, 27 February, 2013, 23:32
> Noticed that Mike, DK3WN, has a beta
> STRaND1 telemetry decoder available at:
>
> http://www.dk3wn.info/software.shtml
>
> Ken, W7KKE
>
------------------------------
Message: 10
Date: Thu, 28 Feb 2013 00:04:16 -0400
From: Gus <8p6sm@xxxx.xxx>
To: Lizeth Norman <normanlizeth@xxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: inquiry about homebrew az-el systems
Message-ID: <512ED740.7080909@xxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
The control hardware (Arduino based or otherwise) will be the simplest
part of any design. I recently bought all the components to make four
'Uno' (which should be more than capable) for less than $10 each, and I
didn't shop around. No, the hardest part will be the actuators (IOW,
the motors and motor control) and the sensors (IOW position detection
and limit switches). These are also likely to be the most expensive
components.
In order to keep cost and complexity down, I am proposing that we DON'T
try to replicate the G5400/5500, etc. We don't need to swing huge
arrays of long yagis any more, and won't need to until a HEO satellite
appears in our sky. So we can limit ourselves to smaller antenna
systems like the Arrow, the Cushcraft antennas I spoke of, and similar.
I have nothing against the K5OE antennas (they look pretty nice!) except
they were designed for P3D, and are probably more than needed to
reliably use the current fleet of satellites. In any case, we have to
decide what amount of maximum torque we want to handle, so we can go
looking for suitable candidate motors. We want to keep these motors as
small as possible to keep their cost (and that of their driver
circuitry) to a minimum.
We'll also need to work out whether we want direct drive or geared,
brushed, brushless, stepper, etc. And speed of rotation and so forth.
Stepper motors can produce lots of torque and their speed is
controllable. They usually operate in steps of less than 2 degrees.
And since the control hardware can count steps, we probably wouldn't
need any position-sensing hardware at all, other than simple limit
switches. But I'm not aware of any common source of surplus stepper
motors. Ordinary motors on the other hand, are available in windshield
wipers, window winders, starting motors, etc. But position sensing
these will need additional hardware.
Personally, I'd like to see a system that runs entirely on 12 volts.
This will make field day operation, emergency operation, car-park demos,
rag-chewing while watching the windsurfing competition and bikini parade
at the beach, etc, possible without the need for an inverter. Base
station use should present no problems because 12v PSUs abound in all
shapes and sizes and current limits, and most shacks already contain at
least one 12v PSU already.
On 02/27/2013 09:56 PM, Lizeth Norman wrote:
> Gus and the gang,
> What about K5OE's array here:
> http://rfanat.ru/s8/P3D_yagi.htm
>
> Still think that using:
> 8x4 aluminum tube stock
> 1" aluminum round stock
> 1 arduino
> 4 relays
> a 24 v ps
> some limit switches
> fuses, of course
> two of the appropriate value pots and maybe some gearing
> and a few gears, bearings and motors for the drivetrain,
> should give us a complete -5400 or -5500 clone.
>
> Norm n3ykf
>
> On Wed, Feb 27, 2013 at 8:30 PM, Gus <8p6sm@xxxx.xxx> wrote:
>> Returning to this topic...
>>
>> I'm thinking about a rotator that can handle a small system like the Arrow,
>> or the Cushcraft A270-6s or even the A270-10s. NOT big boomers like the
KLM
>> 22/40 el CP yagis!
>>
>> So we're looking at 1? - 2 sq. ft of windloading, and maybe 10 lbs of
>> weight. (Including some sort of crossboom, clamps, coax and
counterweights.
>> Rear mounted antennas like the Arrow will need a rear-mounted
>> counterweight.)
>>
>> Anybody qualified to say what that adds up to in terms of TORQUE required
>> from the motors? With a little extra thrown in for a safety margin, maybe?
>>
>> I think a simple, low-cost, easily reproducible design is probably doable,
>> if we combine our ingenuity and expertise.
>>
>>
>> -- 73, de Gus 8P6SM
>> Barbados, the easternmost isle.
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. 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
>
--
73, de Gus 8P6SM
Barbados, the easternmost isle.
------------------------------
Message: 11
Date: Wed, 27 Feb 2013 23:49:21 -0500
From: Lizeth Norman <normanlizeth@xxxxx.xxx>
To: Gus <8p6sm@xxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: inquiry about homebrew az-el systems
Message-ID:
<CAJUhCTNOjbGQV-3Gw_YvxGeJu_mYwMXE9TfqsYO8=tPvz1itGw@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Gus,
I like your thinking. Simply put we need to make feedback position
sensor with associated motor/motor control stuff.
The motor rpm's and gear ratio are functions of the number of degrees
per unit of time, as you say.
One simple solution that I was going to try was a reversible dc gear
motor being polarity switched by a dpdt relay, and a three turn pot
for position sensing. The pot is 16$US. Per copy. Need two as well as
the associated hardware. Scaling the dac on the uP is a nit.
Then again, since we can fiddle with the values in software, so our
inputs can be anything (from a hardware standpoint) of reasonable
accuracy.
Just thinking, why use gears and gear motors?? Why not a dc motor,
bicycle chain and sprockets? The HD bearings for the shaft are $6.95
as I recall, a piece.
Still set on using stock sizes/materials if I can. This would give me
a start modelling this stuff with CAD and make it easier to source.
A note regarding your comment on the Arduino. It really does not
matter what we use in terms of antenna rotators at this point. I
think that if we coherently model the design process, someone in cost
reduced circumstances could reproduce whatever we decide with far more
basic tools than available to us. The key is that there is a
microcontroller with tons of IO attached to a serial port...
Or then again, CO7WT is bit banging the parallel port. Now that's the way to
go.
blah, blah, blah,
Norm n3ykf
------------------------------
Message: 12
Date: Thu, 28 Feb 2013 03:18:17 -0400
From: Gus <8p6sm@xxxx.xxx>
To: Lizeth Norman <normanlizeth@xxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: inquiry about homebrew az-el systems
Message-ID: <512F04B9.6030204@xxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
I particularly like the idea of using bicycle gears/chain for gearing.
Whatever we come up with, I'd prefer if the bulk of it was available
locally, wherever you live. There are no Home Depots in my country, but
there are lots of bicycles. Perhaps we can use the frame of the bicycle
to provide materials for the main structural component too! So, one old
bicycle could provide gears, bearings, structural components, and more
perhaps? :-)
I'm fine with the Arduino as a platform for the software.
The multi-turn pot would obviously work, but I'm a little dubious about
it. They aren't that easy to source, and would have to be connected to
the rotating shafts somehow that there would be very little backlash and
no creep/slippage. I'd thought of the sensors from a couple old optical
mice, mounted right over the shaft, and detecting rotation directly, but
after a bit of googling, I'm not sure we can easily pull off movement
info. Then I thought about a hall-effect switch mounted near one of the
(bicycle?) gear wheels, detecting the passage of each tooth. An optical
sensor, looking through your bicycle chain, detecting the passage of
each link? Or a simple micro-switch, being bumped to produce a pulse
for each link in the chain? But how would you determine direction of
motion?
Perhaps a design that can accommodate either a voltage variable position
sensor, OR a pulse train, making it easier to build the machine with
whatever parts are available?
I'm chucking out a lot of silly ideas in the hope that someone can use
them as the starting point, and come up with something practical.
On 02/28/2013 12:49 AM, Lizeth Norman wrote:
> Gus,
> I like your thinking. Simply put we need to make feedback position
> sensor with associated motor/motor control stuff.
>
> The motor rpm's and gear ratio are functions of the number of degrees
> per unit of time, as you say.
>
> One simple solution that I was going to try was a reversible dc gear
> motor being polarity switched by a dpdt relay, and a three turn pot
> for position sensing. The pot is 16$US. Per copy. Need two as well as
> the associated hardware. Scaling the dac on the uP is a nit.
>
> Then again, since we can fiddle with the values in software, so our
> inputs can be anything (from a hardware standpoint) of reasonable
> accuracy.
>
> Just thinking, why use gears and gear motors?? Why not a dc motor,
> bicycle chain and sprockets? The HD bearings for the shaft are $6.95
> as I recall, a piece.
>
> Still set on using stock sizes/materials if I can. This would give me
> a start modelling this stuff with CAD and make it easier to source.
>
> A note regarding your comment on the Arduino. It really does not
> matter what we use in terms of antenna rotators at this point. I
> think that if we coherently model the design process, someone in cost
> reduced circumstances could reproduce whatever we decide with far more
> basic tools than available to us. The key is that there is a
> microcontroller with tons of IO attached to a serial port...
>
> Or then again, CO7WT is bit banging the parallel port. Now that's the way
to go.
>
>
> blah, blah, blah,
>
> Norm n3ykf
>
>
--
73, de Gus 8P6SM
Barbados, the easternmost isle.
------------------------------
Message: 13
Date: Wed, 27 Feb 2013 22:25:44 -0900
From: Edward R Cole <kl7uw@xxxxxxxxx.xxx>
To: amsat-bb <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Mars Flight In 2018
Message-ID: <201302280725.r1S7Pi5S071240@xxxxxx.xxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
At 12:14 PM 2/27/2013, B J wrote:
>http://moonandback.com/2013/02/27/dennis-tito-and-team-outline-audacious-plan
-for-mars-trip/
>
>73s
>
>Bernhard VA6BMJ @ DO33FL
>_______________________________________________
>Sent via AMSAT-BB@xxxxx.xxx. 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
This excites and inspires like the original Apollo mission. I
thought we would be going much sooner after the lunar landings, but I
may live to see this done. That would be terrific.
Not sure there is any ham radio opportunity with the mission. No
harm in thinking about that.
2019 is 50-years after Apollo-11 landing on the Moon.
73, Ed - KL7UW
------------------------------
Message: 14
Date: Thu, 28 Feb 2013 03:25:14 -0500
From: Lizeth Norman <normanlizeth@xxxxx.xxx>
To: Gus <8p6sm@xxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: inquiry about homebrew az-el systems
Message-ID:
<CAJUhCTPw8aUwDJ=dY0r_sXM8NLv6=D8fFr1zbz-Vpagk2N1nXA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Gus,
What about using the "bottom bracket" from a three piece assembly (mid
level bicycle) and the associated gearing from the back hub as well as
the revelant parts of the frame?
The bottom bracket would form the carry through shaft of the elevation
rotator. Fasten the seat post to a plate and so on.. Could reuse the
fork assembly as the azimuth bearing.
The motor and gear ratios are just scaling factors in equations.
One of my first instincts was to go after bicycle parts. This stuff is
ubitiquious.
I suspect that it may be possible to find a new encoder of the
correct type with a mount for a few dollars. One that is shaft mount,
with an appropriate output and no detents.
It might be the one bit of the project fit for a group buy.
Norm n3ykf
------------------------------
Message: 15
Date: Thu, 28 Feb 2013 10:59:34 +0200
From: Timothy Stranex <tstranex@xxxxxxxx.xxx>
To: Ken Swaggart <k.swaggart@xxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: STRaND1 TLM decoder
Message-ID:
<CABtiSaVrchGGsnpaPDt2XyH6D+-fXfEbq7WbmnAjtz5H7iWMsQ@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
There's also an online web telemetry decoder for STRaND-1 here:
http://blog.carpcomm.com/2013/02/online-strand-1-telemetry-decoder-now.html
Timothy
HB9FFH
On Thu, Feb 28, 2013 at 4:05 AM, Ken Swaggart <k.swaggart@xxxxxxx.xxx> wrote:
> The Google translator translated "STRaND" to "Beach" !! It's there and
> works great!
>
> 73,
> Ken, W7KKE
>
> -----Original Message----- From: Trevor .
> Sent: Wednesday, February 27, 2013 16:32
> To: amsat-bb@xxxxx.xxx ; Ken Swaggart
> Subject: Re: [amsat-bb] STRaND1 TLM decoder
>
>
> I put the URL into Google language translator and the STRaND-1 TLM Decoder
> disappeared, only seems present in the German text version.
>
> 73 Trevor M5AKA
>
> --- On Wed, 27/2/13, Ken Swaggart <k.swaggart@xxxxxxx.xxx> wrote:
>>
>> Date: Wednesday, 27 February, 2013, 23:32
>> Noticed that Mike, DK3WN, has a beta
>> STRaND1 telemetry decoder available at:
>>
>> http://www.dk3wn.info/software.shtml
>>
>> Ken, W7KKE
>>
>
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. 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: 16
Date: Thu, 28 Feb 2013 09:58:22 +0000 (GMT)
From: "Trevor ." <m5aka@xxxxx.xx.xx>
To: w7lrd@xxxxxxx.xxxx va6bmj@xxxxx.xxx
Cc: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Mars Flight In 2018
Message-ID:
<1362045502.62206.YahooMailMobile@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
It sounds like a suicide mission but I'm sure that won't stop people
applying to go on the trip. They'd have a guaranteed place in the
history books whatever the outcome.
But it's the timescales that are the problem. Realistically 2018 for a
Human flight would be unacheivable but the 2030's is feasible.
The spacecraft would need to carry a massive amount of supplies so probably
not much room for Ham equipment. Of course eliminating clothes would save a
bit but its a still a huge quantity of food not to mention 18 months supply
of Morphine.
Still the project is just what is needed - some adventurous thinking to move
Space Exploration forward.
73 Trevor M5AKA
------------------------------
_______________________________________________
Sent via amsat-bb@xxxxx.xxx. Opinions expressed are those of the author.
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End of AMSAT-BB Digest, Vol 8, Issue 67
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