I was one ham's first satellite contact two nights ago on FO-29 and I
was almost a ham's first satellite contact this evening on VO-52.
Unfortunately, we couldn't get it done. Plus, I haven't been on the
birds for very long myself.
73,
Paul Stoetzer, N8HM
Washington, DC
__
On 9/6/13, Rick Tejera wrote:
> You know, now that I think about it, I do recall the message about the
> mailing labels. It was said we should get the Journal, but the name would
> be
> different.
>
> Fact is I haven't gotten my copy.
>
> Were they mailed or was the mailing agent fixing the proble
You know, now that I think about it, I do recall the message about the
mailing labels. It was said we should get the Journal, but the name would be
different.
Fact is I haven't gotten my copy.
Were they mailed or was the mailing agent fixing the problem??
Rick Tejera (K7TEJ)
Saguaro Astronomy C
Hello,
Perhaps my recent work may stimulate discussion in this thread, though it
has not been proven in Space yet, but ...
my George Washington University MAE dept. micropropulsion subsystems for
small spacecraft was highlighted in the September 3 issue of the School of
Engineering and Applied Sci
Back when I found one like this -
http://www.newegg.com/Product/Product.aspx?Item=N82E16833997212
If I recall it was only about 45 bucks.
from a company that I no longer remember their name (input welcomed)
who was located in Florida someplace. Never had a problem once I got the
VHF and UHF and
What is the status of the newsletter? The last one I received was
May/June. Is it the latest one? I look so forward to getting the
newsletter. It is like a letter from home.
73,
-james
W5AOO
___
Sent via AMSAT-BB@amsat.org. Opinions expressed are t
Bob, for comparison, I used a 30" x 24" grill for AO-40. I found that
moving the dish +/- one "click" on my controller (10 degrees) would make
a just-audible difference in the received signal strength. So, I figure
10 degrees is the 3db beam width, not good enough, apparently, for the
ISS TV.
The stuck PTT while running SSTV on ISS has been a known issue
since the vox box was first connected to the TM-D700 in the year 2005. The ISS
crew soon discovered the stuck VOX
transmitter issue.
One ISS crewmember left
the radio running all night sending SSTV images. The next morning the rad
Get on AO-7! It's certainly no harder than FO-29 or VO-52. You just have to
know if it's in Mode A or B (see here http://oscar.dcarr.org/). For next
next few months, it will alternate between Mode A and B switching some time
around 0300Z every day. When it reaches a point where it's eclipsed on
eve
When AO-51 used the S band downlink, I used a 18 inch TV dish with a 6 turn
helix feed connected to a AIDC 3731 (K5GNA) down converter. I do not know the
pointing accuracy as it was not used very much. On AO-40 (sobsob) I used a 4
foot primestar dish (heavy) with the same feed and dc.
73 Bob W7
Thanks to the dedicated efforts of Ron, N8RO I've managed to work two
new grids today, including EN76. Both on FO-29, but I'm sure Ron has
also been active on SO-50---so if you're chasing grids be sure to listen
for him. Can't thank him enough for activating these grids.
Also had a long QSO la
> But what if the SDX that flew on ARISSat, or the one
> that will be developed for the Future of the Fox series could be "sold" (or
> given) to the university cubesat community as a radio capable of being used
> to deliver science data?
Hi Zach,
Unfortunately there goes the CubeSat's power budg
Here you go:
http://www.amsat.it/Amsat-Italia_HamTV.pdf
On Thu, Sep 5, 2013 at 4:59 AM, michael luft wrote:
> What kind of positioning accuracy can be expected form amateur PC Software
> and Antenna Rotators? Or, in other words: What kind of S band antenna (
> gain or dimensions) is needed to
I miss linear transponders I grew up with the early RS birds
particularly RS-6 and RS-8 I was only a "kid" in college ...
If you're looking for EASY ENTRY MODE A ROCKS!
That said .. I never bother with the FM birds tried once and it's was
just a barrage of callsigns and grids
Here is the video where this mission object is stated:
http://www.youtube.com/watch?feature=player_detailpage&v=3o_PV2b9F6g#t=459
On Thu, Sep 5, 2013 at 8:44 AM, n0jy wrote:
> Hi Zach,
>
>
> On 9/5/2013 9:03 AM, Zach Leffke wrote:
>
>> Just throwing this out there:
>>
>> But what if the SDX tha
New equipment wouldn't be needed. The concept is to use the PCs that
amateurs already have to fit more QSOs into the downlink. Uplink frequency
coordination isn't any harder than on AO10, 13 or 40.
73,
John
KD6OZH
- Original Message -
From: "Virgil Bierschwale"
To: "'John Stephensen
They updated the site and changed nearly all of the 28 MHZ freqs.
- Original Message -
From: "Les Rayburn"
To: "AMSAT Mailing List" ;
Sent: Wednesday, September 04, 2013 2:12 PM
Subject: [amsat-bb] Say "Hi" To Juno (Callsign end's with "F")
I reached out to JPL to ask what the desir
You just described the objective of the Fox-1 FM RF board. This is exactly the
position AMSAT is trying to get into. There's a YouTube video that interviews
Barry Baines and he ends up explaining this goal. I'd link to it but am
currently typing this on my phone .
Zach Leffke wrote:
>Just thro
http://innerspace.net/2013/09/05/spacex-launch-update/
Meanwhile, SpaceShipTwo finishes another powered test flight:
http://moonandback.com/2013/09/05/spaceshiptwo-completes-second-powered-flight/
http://www.parabolicarc.com/2013/09/05/spaceshiptwo-completes-powered-flight-mojave/
73s
Bernhard
Hi Zach,
On 9/5/2013 9:03 AM, Zach Leffke wrote:
Just throwing this out there:
But what if the SDX that flew on ARISSat, or the one
that will be developed for the Future of the Fox series could be "sold" (or
given) to the university cubesat community as a radio capable of being used
to deliver
What is the specific Impulse?
On Thursday, September 5, 2013, Samudra Haque wrote:
> Hello,
> Perhaps my recent work may stimulate discussion in this thread, though it
> has not been proven in Space yet, but ...
>
> my George Washington University MAE dept. micropropulsion subsystems for
> small
The FM PA can be more efficient than the linear PA. If you constrain the FM
deviation to be very narrow you can get 6 dB greater power efficiency for FM
given a fixed peak envelope power ("HF Radio Systems and Circuits," page
59).
73,
John
KD6OZH
- Original Message -
From: "Robert B
Hi Michael.
Depends on the bandwidth of the modulation and the transmit power
But as a rough guide, I used a 12 turn helix with about 10 degree pointing
accuracy with AO-51.
That's not good, but it works.
However, if you take the HAMTV equipment on the ISS, then you need a lot more
gain on t
Hi Miles,
Thank you for your answer.
I also read the infomation on the link at end.
Fabiano Moser.
Enviado do meu iPhone
On 05/09/2013, at 21:45, MM wrote:
> The stuck PTT while running SSTV on ISS has been a known issue since the vox
> box was first connected to the TM-D700 in the year 200
The modular SDR board for universities is exactly what Fox-1 and Fox-2 (as
well as future Fox's) aim to do! Unfortunatly noone here will get details
on the current specs or design due to ITAR restrictions but if you become
part of the Fox project engineers you'll see what's going on.
* I'll leave
What kind of positioning accuracy can be expected form amateur PC Software
and Antenna Rotators? Or, in other words: What kind of S band antenna (
gain or dimensions) is needed to track a S band LEO Sat?
73
Michael
___
Sent via AMSAT-BB@amsat.org. Opini
Just throwing this out there:
1. University cubesats tend to want to occupy amateur satellite service
spectrum for their science missions, V/U is common.
2. Most *science* missions are only designed to last a few years, but the
orbits will last a while longer.
3. How many science missions have
D Star Amsat users net tonight at
01;00 UTC on REF 60 B
Hope to see you there with news about grid trips new operators and
things you may want to sell or buy
Satellite news ?
https://sites.google.com/site/memphisdstar/d-satellite-amsat-net
Damon
WA4HFN em55
Memphis, TN
> As long as AMSAT-NA needs to concentrate on... Cubesats...
> I would really like to see the pursuit of linear transponders...
> on them instead of single-channel FM repeaters.
We can have the best of BOTH FM and Linear!
> But we used to use a ucc1 in the navy to receive messages.
> http://www.v
Nick,
Vision is good, but clear vision which tempers hope with reality is essential.
73s,
Alan
WA4SCA
-Original Message-
From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf
Of Nick Pugh K5QXJ
Sent: Thursday, September 05, 2013 4:10 AM
To: tosca...@umn.edu; a
Hi,
SSTV active with problems, PTT was activated but no audio, then after
20seconds± the audio started and goes out before the end of image.
PTT still ON without audio till LOS.
On Thu, Sep 5, 2013 at 10:22 AM, Claudio Ariotti, IK1SLD <
clau...@ariotti.com> wrote:
>
>
> Hi Jan, about your com
High complexity of a ""replacement for hypercomplex AO40"" is not the
answer.
A much simpler satellite is IMHO the way to go.
It will take less time to design , build and test
It will be tipping the scale at less weight.
It will receive a much faster approval by whoever is willing to provide the
Hi Jan, about your comment I read on your web, the Luca Parmitano don't use
the Kenwood TM-D710, this radio is used by Russian crew.
The MAI-75 Experiment is a Russian experiment and the crew activates it when
Moscow has AOS, so we lost 50% of the pass.
Luca only use the Ericsson radio in the Col
Please watch this short video it give a path to HEO
http://www.youtube.com/watch?v=TpGnxlZC8Hs
Thanks
nick ARS K5QXJ EM30xa 30.1N 92.1W
Office 337 593 8700
Cell 337 258 2527
Helping UL become a world Class Engineering and Educational School
-Original Message-
From: a
John
IT turns out that launch opportunities relativity plentiful what lacking is
AMSAT vision and calibration with a university that has propulsion
technology. See short video url
http://www.youtube.com/watch?v=9DIxnO3CGrY
Thanks
nick ARS K5QXJ EM30xa 30.1N 92.1W
Office 337 593 8700
Cell
If you vote for Bryan for the AMSAT board he is committed to a HEO
nick
-Original Message-
From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On
Behalf Of Michael
Sent: Wednesday, September 04, 2013 4:25 PM
To: amsat-bb@amsat.org
Subject: [amsat-bb] Re: A0 40 replacemen
Hi Cor,
Via this link: http://www.pe0sat.vgnet.nl/2013/iss-sstv-reception/ you
can download
the SSTV images I received yesterday.
73 Jan PE0SAT
On 04-09-2013 20:47, Cor . wrote:
Hello All,
Several ISS SSTV images are received from several ground stations.
See ISS SSTV images and info:
http
Hi,
ZACUBE is a HF beacon. Something like this may be a foundation for what
you're suggesting.
http://amsat-uk.org/2012/08/25/14099-khz-cput-cubesat-to-launch-end-of-november/
It's riding along with FUNcube in the same POD. Take a look at this
page, about half way down you'll see the ZACUBE
Hi,
How feasible is it to fly a mode K (15m uplink, 10m downlink) linear
transponder on a cubesat?
I expect that pretty much any ham with an HF transceiver would be able
to work this bird, and I expect that due to the lower frequency, the
footprint might be a bit larger than that of VHF/UHF
Hi,
How feasible is it to fly a mode K (15m uplink, 10m downlink) linear
transponder on a cubesat?
I expect that retty much any ham with an HF transceiver would be able to
work this bird, and I expect that due to the lower frequency, the
footprint might be a bit larger than that of VHF/UHF b
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