| |
CX2SA > SATDIG 21.02.09 01:01l 397 Lines 13453 Bytes #999 (0) @ WW
BID : 10835-CX2SA
Read: GUEST
Subj: AMSAT-BB-digest V4 82
Path: IZ3LSV<IW0QNL<F4BWT<YO6PLB<CX2SA
Sent: 090220/2353Z @:CX2SA.LAV.URY.SA #:10835 [Minas] FBB7.00e $:10835-CX2SA
From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Debris TLE (PY2ZX)
2. FT-51 Satelite HT's and more (Robert Bruninga)
3. Yes, my call was XE2/WD9EWK today...
(Patrick STODDARD (WD9EWK/VA7EWK))
4. New CubeSats #2 (Mineo Wakita)
5. Re: New CubeSats #2 (Alan P. Biddle)
6. ISS X Band - 17:05z EL96 (David - KG4ZLB/M?ZLB)
7. Re: ISS X Band - 17:05z EL96 (n3tl@xxxxxxxxx.xxxx
8. Re: ISS X Band - 17:05z EL96 (David - KG4ZLB/M?ZLB)
----------------------------------------------------------------------
Message: 1
Date: Thu, 19 Feb 2009 17:46:30 -0300
From: PY2ZX <py2zx.ham@xxxxx.xxx>
Subject: [amsat-bb] Debris TLE
To: amsat-bb@xxxxx.xxx
Message-ID: <499DC526.5020906@xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
TLE of Iridium-33 and Cosmos-2251 debris are now on Celestrak database:
http://celestrak.com
Flavio PY2ZX
------------------------------
Message: 2
Date: Thu, 19 Feb 2009 22:20:06 -0500
From: "Robert Bruninga" <bruninga@xxxx.xxx>
Subject: [amsat-bb] FT-51 Satelite HT's and more
To: "'AMSAT BB'" <amsat-bb@xxxxx.xxx>
Message-ID: <9AD15D7AC459473683CAF9AA76811D72@xxxxx.xxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
The FT-51 is a popular AMSAT HT for full duplex satellite work.
But the FT51 (and TH78) can also display DTMF Text Messages, and
I am considering updating my APRSdata program that sends
real-time satellite-in-view data for display on those radios.
Just set the radio to the DTMF text messaging channel whenever
you are mobile, and there on the radio, will appear the satelite
name, frequency of downlink and direction and elevation to the
satellite. When you see one of these, just QSY and work the
bird.
Then return to monitoring the DTMF data channel for the next
bird. You wont ever have to do any predictions for casual
operations again.
But I don't have an FT51. SO I need someone that is familiiar
with their radio, has their manual, and can take the time to
figure out the DTMF text messsaging capabilities.
See www.aprs.org/aprs-dtmf-gate.html to see how we are taking
local APRS data and displaying it on the FT51 and TH78 radio
front panels just like we do for APRS radios. Adding Satellite
info is trivial to add.
Also, I need confirmation that the FT11 and FT41 can also do the
DTMF TEXT MESSAGING too.
Thanks
Bob, WB4APR
------------------------------
Message: 3
Date: Thu, 19 Feb 2009 23:30:25 -0800 (PST)
From: "Patrick STODDARD \(WD9EWK/VA7EWK\)" <amsat-bb@xxxxxx.xxx>
Subject: [amsat-bb] Yes, my call was XE2/WD9EWK today...
To: amsat-bb@xxxxx.xxx
Message-ID: <329771.32965.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Hi all!
Despite a lot of local QRM on the SO-50 downlink and the
absolute wall of stations in the first half of one AO-51
pass (50W could not break through from here!), it was a
very nice day in Mexicali. A good day to visit, with nice
weather and (mostly) good conditions on several satellite
passes. After over 4 years since my last trip to Mexico,
this would be my first opportunity to work the satellites
from there. Please note that my callsign when in Mexico is
XE2/WD9EWK, as the Mexicans follow the CEPT convention (also
used by FCC in the US except for visiting Canadian hams)
with the prefix/indicator comes before the foreign ham's
call. Please keep that in mind, if you are using Logbook of
the World and upload satellite contacts to that system - I
hope to do the same for my satellite QSOs eventually, including
those made from Mexico.
After getting my paperwork at the border (Mexican immigration)
and at the communications ministry, I was itching to get on the
air. The ISS was passing by just after midday local time (2039
UTC, to be precise), and I was able to work it from a spot in
the west end of Mexicali for a few QSOs. I tried SO-50 from
there around 2250 UTC, but had lots of QRM from nearby TV
transmitters on towers very close to that area. Ouch! After
that pass, I went across the city to the "Ciudad Deportiva"
(Sports City) complex, near the baseball stadium that is home to
a Mexican winter-league club and the recently-concluded Caribbean
Series tournament. More open space, and not as close to those
pesky TV transmitters.
The AO-51 pass around 0010 UTC was crazy for the first 5 minutes.
I could only break through a couple of times, and at one point
it was nothing but stations calling for me - and I could not even
get through to acknowledge any of them. I apologize for that, as
even 50W into my handheld antenna was no good against all that RF
to my east. I sincerely hope K5D is not greeted in the same manner
if they show up on the FM satellites, especially since they will
only have 5W to work with. After K7WIN cleared some space for me
to come through the crowd (many thanks, Jeff!), I was able to log
contacts. SO-50 right after that pass was a bit easier, with fewer stations
and less QRM from those TV transmitters.
There was a really high AO-51 pass to the west around 0147 UTC,
and I was on there from a park area in a neighborhood a few miles/km
southwest of the baseball stadium. This turned out to also serve
as an impromptu demonstration for a local radio club, the "Red
Digital Noroeste" (Northwest Digital Network). Four club members
were there, and saw me work that western pass. I was closer to
the TV transmitters, but they seemed to have less effect on the
AO-51 435.300 MHz downlink compared to the SO-50 436.795 MHz
downlink (and zero effect on the ISS 145.800 MHz downlink). This
was a great pass to show satellite operating to hams who had never
seen or tried this part of the hobby. Thanks to all the stations
from central Mexico up through the western USA and Canada on the
pass! Then a quick get-together with the local hams to talk about
radio, satellites, and other stuff hams like to talk about almost
anywhere before crossing the border back into the USA and calling
it a night.
Quick stats... I worked 5 passes this afternoon/evening. On those
passes, I worked 6 stations through the ISS U/V cross-band repeater
on one pass, 12 on the 2 SO-50 passes, and 28 on the 2 AO-51 passes.
I operated from 3 different locations in Mexicali, two in DM22go and
one in DM22gp (the baseball stadium), and all 3 were not too far
south of the USA/Mexico border. Alex XE2BSS/N2IX, who was with me
during the day, took some pictures and has started uploading them to:
http://www.xe2bss.org/patmxl.html
Alex is still adding pictures to this page, so consider it a "work
in progress". Check it again in a couple of days to see additional
pictures he posts there, and run the link through Babelfish or some
other translation site if you can't read the Spanish-language text
on that page.
For Friday afternoon and all day Saturday, I will continue to be in
grid DM22. For those two days, I will have an AMSAT table at the
Yuma AZ hamfest, and will do satellite demonstrations on FM and SSB
satellites as I had originally planned. I don't have firm plans for
Sunday yet, but hope to be on satellites once again from somewhere.
Monday is still my travel day back to Phoenix, possibly including
stops to work passes in other grids on my way home.
Good night, and 73!
Patrick WD9EWK/VA7EWK (now also XE2/WD9EWK) - Calexico, California
http://www.wd9ewk.net/
------------------------------
Message: 4
Date: Fri, 20 Feb 2009 21:16:44 +0900
From: Mineo Wakita <ei7m-wkt@xxxxxxxxx.xx.xx>
Subject: [amsat-bb] New CubeSats #2
To: amsat-bb@xxxxx.xxx
Message-ID: <C8C99355185783ei7m-wkt@xxxxxxxxx.xx.xx>
Content-Type: text/plain; charset=us-ascii
Launch : 17 May 2009 (Maybe postponed)
Vehicle: Minotaur-1
Site : WI LA-0B
Main Payload: TacSat-III
Satellite Operator Downlink Mode
----------- ------------- -------- ------------------
PharmaSat-1 NASA Ames 437.465 1200bps
HawkSat-1 HISS 437.345 ?
CP-6 CalPoly 437.365 1200bps
AeroCube-3 Aerospace Co. ? ?
----------- ------------- -------- ------------------
http://showcase.netins.net/web/wallio/CubeSat.htm
http://www.amsat.org.uk/iaru/finished.asp?order=sat
JE9PEL, Mineo Wakita
------------------------------
Message: 5
Date: Fri, 20 Feb 2009 06:29:06 -0600
From: "Alan P. Biddle" <APBIDDLE@xxxxxx.xxx>
Subject: [amsat-bb] Re: New CubeSats #2
To: <amsat-bb@xxxxx.xxx>
Message-ID: <9AE4EBE3E8244ED9B28CE9D409F782B9@xxxxxx>
Content-Type: text/plain; charset="us-ascii"
Satellite Operator Downlink Mode
----------- ------------- -------- ------------------
PharmaSat-1 NASA Ames 437.465 1200bps
HawkSat-1 HISS 437.345 ?
CP-6 CalPoly 437.365 1200bps
AeroCube-3 Aerospace Co. ? ?
----------- ------------- -------- ------------------
Unless that is another HISS besides the one at UMES, I don't plan to provide
any support until they give AMSAT-NA's stuff back, with interest. ;)
Alan
WA4SCA
------------------------------
Message: 6
Date: Fri, 20 Feb 2009 13:16:14 -0500
From: David - KG4ZLB/M?ZLB <m0zlb@xxxxxxxxxx.xxx>
Subject: [amsat-bb] ISS X Band - 17:05z EL96
To: amsat-bb@xxxxx.xxx
Message-ID: <499EF36E.5010306@xxxxxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Either someone doesn't know how to use their equipment or their
equipment is broken or it really was the most blatant attempt to
block/jam the signal from the ISS during the most recent pass (17.05utc).
My money is on the latter although I would hope for one of the former
excuses - either way it was a complete mess!
Many thanks to N5AFV, W5KUB and AA9LC who managed to get a workable
signal through!
David
KG4ZLB/M0ZLB
www.kg4zlb.com
------------------------------
Message: 7
Date: Fri, 20 Feb 2009 18:44:42 +0000
From: n3tl@xxxxxxxxx.xxx
Subject: [amsat-bb] Re: ISS X Band - 17:05z EL96
To: David - KG4ZLB/M?ZLB <m0zlb@xxxxxxxxxx.xxx>, amsat-bb@xxxxx.xxx
Message-ID:
<022020091844.5416.499EFA1A00098EAD0000152822230703629B0A02D2089B9A019C0
4040A0DBF049BCC02@xxx.xxx>
Content-Type: text/plain; charset="utf-8"
David and all,
I'm confident someone will correct me if any of what follows is in error.
I believe two elements are at play during passes when the ISS repeater is
active.
1 - Doppler-tuning on the transmit side is important.
2 - I suspect the squelch is set somewhat on the radio up there; otherwise, I
doubt anyone would get through at all.
My sense is that the "jamming" you alluded to has more to do with people who
are transmitting with decent power levels who are hitting the repeater but are
slightly off the uplink frequency. That, plus some whose signals barely break
the squelch.
And there I was ... out in the front yard with my VX-7R set at 50 mW out. Like
THAT signal has a chance!
I'm gonna keep trying, though, whenever I use the HT for a pass.
73 to all,
Tim - N3TL
-------------- Original message from David - KG4ZLB/M?ZLB
<m0zlb@xxxxxxxxxx.xxx>: --------------
> Either someone doesn't know how to use their equipment or their
> equipment is broken or it really was the most blatant attempt to
> block/jam the signal from the ISS during the most recent pass (17.05utc).
>
> My money is on the latter although I would hope for one of the former
> excuses - either way it was a complete mess!
>
> Many thanks to N5AFV, W5KUB and AA9LC who managed to get a workable
> signal through!
>
> David
> KG4ZLB/M0ZLB
> www.kg4zlb.com
>
>
>
>
> _______________________________________________
> 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: 8
Date: Fri, 20 Feb 2009 13:48:57 -0500
From: David - KG4ZLB/M?ZLB <m0zlb@xxxxxxxxxx.xxx>
Subject: [amsat-bb] Re: ISS X Band - 17:05z EL96
To: n3tl@xxxxxxxxx.xxxx amsat bb <amsat-bb@xxxxx.xxx>
Message-ID: <499EFB19.9020404@xxxxxxxxxx.xxx>
Content-Type: text/plain; charset=UTF-8; format=flowed
As always Tim, the voice of reason :-D
I tried to work you on AO-51 last night but it was the normal zoo!
David
KG4ZLB/M0ZLB
www.kg4zlb.com
n3tl@xxxxxxxxx.xxx wrote:
> David and all,
>
> I'm confident someone will correct me if any of what follows is in error.
>
> I believe two elements are at play during passes when the ISS repeater
> is active.
>
> 1 - Doppler-tuning on the transmit side is important.
>
> 2 - I suspect the squelch is set somewhat on the radio up there;
> otherwise, I doubt anyone would get through at all.
>
> My sense is that the "jamming" you alluded to has more to do with
> people who are transmitting with decent power levels who are hitting
> the repeater but are slightly off the uplink frequency. That, plus
> some whose signals barely break the squelch.
>
> And there I was ... out in the front yard with my VX-7R set at 50 mW
> out. Like THAT signal has a chance!
>
> I'm gonna keep trying, though, whenever I use the HT for a pass.
>
> 73 to all,
>
> Tim - N3TL
------------------------------
_______________________________________________
Sent via amsat-bb@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT member? Join now to support the amateur satellite program!
http://amsat.org/mailman/listinfo/amsat-bb
End of AMSAT-BB Digest, Vol 4, Issue 82
***************************************
Read previous mail | Read next mail
| |
