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CX2SA > SATDIG 14.06.08 00:54l 519 Lines 13712 Bytes #999 (0) @ WW
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To : SATDIG@WW
Today's Topics:
1. Re: OT - Weather satellite antennas (Mark VandeWettering)
2. SEEDS June 12th: CW and Digitalker + SSTV (Henk, PA3GUO)
3. Re: OT - Weather satellite antennas (Dave hartzell)
4. Re: OT - Weather sats (Dave hartzell)
5. Cute-1.7+APD II heard over Banting, MALAYSIA (Yushida Mohd Yunus)
6. nifty experiment on ISS (Nate Duehr)
7. AAUSat Telemetry (Mike Rupprecht)
8. Re: SEEDS June 12th: CW and Digitalker + SSTV (Luc Leblanc)
9. Yubileiny Rs30 tlm (andy thomas)
10. Re: Yubileiny Rs30 tlm (Mike Rupprecht)
----------------------------------------------------------------------
Message: 1
Date: Thu, 12 Jun 2008 12:04:26 -0700
From: Mark VandeWettering <kf6kyi(AT)gmail.com>
Subject: [amsat-bb] Re: OT - Weather satellite antennas
To: Ed Tump <ed(AT)squaretfarm.com>
Cc: amsat-bb(AT)amsat.org
Message-ID: <4851733A.4040506(AT)gmail.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Ed Tump wrote:
> Folks,
>
> Thanks for the response on power. Now I wonder if my Arrow satellite antenna
> will work for these weather satellites or my AL800 HT antenna.
>
> Any ideas?
>
> Thanks.
>
> 73,
>
> Ed
>
> KC9GWK
> Grid EN52
>
> AmSat Member
>
>
I've done a bit of work recording the NOAA satellites, using the
wideband FM settings on my little Yaesu VX-3R, or the Wide FM mode on my
Radio Shack Pro-60 hand scanner and tracking it by hand with my Arrow
antenna. The arrow definitely provides significant gain around 137 Mhz,
and I am able to get fairly clear recordings. The major problem isn't
actually antenna gain, but the filter bandwidth of the receivers. Wide
FM is actually way too wide: the satellite actually uses about 50khz
bandwidth, and the Wide FM filter bandwidth is more like 200khz, which
means two things: you get about six db more noise, and you can get
interference from other sources, such as other satellites. For
instance, I blogged about this a while ago:
http://brainwagon.org/2008/02/09/saturday-noaa-17-pass/
On this pass, I actually used a small preamp, which really doesn't help
with my setup (handheld yagi means coax losses are low). I wrote my
own apt decoder, which still had some bugs in this incarnation, so you
can see that I lost sync a couple of times. The bright rectangle of
noise overlayed is probably an Orbcomm satellite operating on a nearby
frequency: a weather receiver with smaller frequency bandwidth would be
helpful.
You might ask what you can do with just the normal narrow fm rece[topm
pf upir average HT. I did that experiment too.
http://brainwagon.org/2007/12/16/narrow-versus-wide-fm/
http://brainwagon.org/wp-content/uploads/2007/12/test.jpg
You can see all sorts of clipping artifacts at the beginning where the
receiver is set in narrow mode. In particular, you can't actually
reproduce the nice stepped gradient that appears between the images. In
wide band, we get much better dynamic range.
If you nose around my blog, perhaps searching for noaa, you can find
other pictures that I did. All of these were recorded on my Macbook
using Audacity, fed from my Pro-60 or my VX-3R wired to my dual band
Arrow antenna, and then decoded with my own software.
Feel free to hit me with email if you have any further questions:
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: 2
Date: Thu, 12 Jun 2008 23:14:42 +0200 (CEST)
From: "Henk, PA3GUO" <hamoen(AT)iae.nl>
Subject: [amsat-bb] SEEDS June 12th: CW and Digitalker + SSTV
To: <amsat-bb(AT)amsat.org>
Message-ID: <2862.212.61.85.173.1213305282.squirrel(AT)webmail.iae.nl>
Content-Type: text/plain; charset=iso-8859-1
Today SEEDS had both CW, and digitalker on.
Actually the digitalker had the 'secret' code
spoken, which, according to their WEB site, will
enable you to receive the special digitalker QSL.
So I did submit, let's see if I get it.
Same holds for SSTV, so I submitted the received
picture, which was transmitted in the same pass,
inbetween the spoken messages.
Reception was done during lunch, at around 5 degrees
elevation, still good quality.
Just now (in the evening) writing this email, after
I monitored the 437.485 CW downlink. Also was fine.
Would be nice if they would also be able to upload
in the SSTV picture 'secret' messages. Not sure if it
can be programmed still, or is fixed in the satellite.
Henk, PA3GUO
------------------------------
Message: 3
Date: Thu, 12 Jun 2008 15:34:10 -0700
From: "Dave hartzell" <hartzell(AT)gmail.com>
Subject: [amsat-bb] Re: OT - Weather satellite antennas
To: "Ed Tump" <ed(AT)squaretfarm.com>
Cc: amsat-bb(AT)amsat.org
Message-ID:
<1c096fd70806121534m698a3fd4y552e275a7921fe99(AT)mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
Ed,
The NOAA transmissions from K, L and M satellites are right-hand
circular polarized. Transmission power is pretty high, I think 5
watts.
While you can probably get by with the Arrow, it isn't circularly
polarized, and is probably tuned for around 145 MHz (versus 137 MHz).
There are plans and kits available for very cheap helix antennas, the
simplest being made from PVC, wire and coax. A google search for
'noaa apt antenna' turns up quite a few hits. I'm using an M2 2-meter
Egg Beater without a pre-amp, and it works pretty well.
Here are some references you might find useful:
http://www2.ncdc.noaa.gov/docs/klm/html/c4/sec4-2.htm
ARRL Weather Satellite Handbook: http://www.arrl.org/catalog/?item=4483
73,
Dave
n0tgd
On Thu, Jun 12, 2008 at 9:19 AM, Ed Tump <ed(AT)squaretfarm.com> wrote:
> Folks,
>
> Thanks for the response on power. Now I wonder if my Arrow satellite antenna
> will work for these weather satellites or my AL800 HT antenna.
>
> Any ideas?
>
> Thanks.
>
> 73,
>
> Ed
>
> KC9GWK
> Grid EN52
>
> AmSat Member
>
>
>
>
>
> _______________________________________________
> 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: 4
Date: Thu, 12 Jun 2008 15:35:27 -0700
From: "Dave hartzell" <hartzell(AT)gmail.com>
Subject: [amsat-bb] Re: OT - Weather sats
To: "Ed Tump" <ed(AT)squaretfarm.com>
Cc: amsat-bb(AT)amsat.org
Message-ID:
<1c096fd70806121535g1541b217o216410582fed7d80(AT)mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
"End of life" transmitter power is 5 Watts....
http://www2.ncdc.noaa.gov/docs/klm/html/c4/sec4-2.htm
On Wed, Jun 11, 2008 at 8:59 PM, Ed Tump <ed(AT)squaretfarm.com> wrote:
>
> Any idea on what kind of TX power is being used for the weather satellites?
------------------------------
Message: 5
Date: Fri, 13 Jun 2008 11:28:25 +0800
From: "Yushida Mohd Yunus" <yushida(AT)angkasa.gov.my>
Subject: [amsat-bb] Cute-1.7+APD II heard over Banting, MALAYSIA
To: <amsat-bb(AT)amsat.org>
Message-ID:
<2D4B607415693847A9CB5C1FDA530A23342739(AT)jupiter.angkasa.gov.my>
Content-Type: text/plain; charset="us-ascii"
June 13, 2008,
AOS: 01:41 UTC
LOS: 01:52 UTC
CW 437.275
cute 87 cb ae aa 38 27 24 69 70 3b 17
cute 87 cb ad ab 38 29 63 37 .. .. 17
cute 87 cc ae a9 38 27 24 69 63 36 17
cute 87 cb .. ac 38 27 24 69 69 36 17
cute 87 cc ae b0 38 28 25 69 6a 3c 17
cute 87 cb ad bs 38 28 25 .. .. 3b 17
cute 88 cc ae b5 38 28
hy-gain 2x15 beam,
no pre-amp
Kenwood TS2000
73,
Sreem, 9W2VSK & Shida, 9W2YMY
------------------------------
Message: 6
Date: Fri, 13 Jun 2008 00:07:38 -0600
From: Nate Duehr <nate(AT)natetech.com>
Subject: [amsat-bb] nifty experiment on ISS
To: AMSAT BB <amsat-bb(AT)amsat.org>
Message-ID: <48520EAA.3020400(AT)natetech.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Well, I thought it was nifty, anyway...
http://www.eurekalert.org/pub_releases/2008-06/nu-trt061008.php
Nate WY0X
------------------------------
Message: 7
Date: Fri, 13 Jun 2008 09:13:05 +0200
From: "Mike Rupprecht" <mail(AT)mike-rupprecht.de>
Subject: [amsat-bb] AAUSat Telemetry
To: "'amsat'" <amsat-bb(AT)amsat.org>
Message-ID: <000501c8cd24$ecfd2930$c6f77b90$(AT)de>
Content-Type: text/plain; charset="iso-8859-1"
Hi,
according this received telemetry (May 12, 2008 at 2245 UTC) restarted
AAUsat during the pass (-> uplink time).
| | EPS | | COM |
|
Uptime | Bat | I_Bat | Temp1 Temp2 | LastRSSI | HAM Sponsor
|
-------- | -----+------- | ------------- | ----------- |
----------------------------------+
17460s | 8.3 | -87.10 | 47.39 45.55 | -172.0dBm | ------ Den
Obelske Familiefond |
17490s | 8.3 | -70.97 | 47.00 45.55 | -172.0dBm | ------ Irfan
Kuwetli |
17520s | 8.3 | -64.52 | 47.00 45.16 | -172.0dBm | ------ Grundfos
|
0s | 0.0 | 0 | 0 0 | -172.0dBm | ------ Knud
H?jgaards Fond |
30s | 8.4 | -38.71 | 43.87 43.20 | -172.0dBm | ------ Joost
Elstak |
60s | 8.4 | -119.35 | 44.26 43.59 | -172.0dBm | ------ Grundfos !
|
90s | 8.4 | -125.81 | 45.05 43.98 | -172.0dBm | ------ Karl Kaas
Laursen |
120s | 8.4 | -122.58 | 45.44 44.37 | -172.0dBm | ------ Texas
Instruments |
180s | 8.4 | -74.19 | 46.22 44.76 | -172.0dBm | ------ CTIF
|
210s | 8.4 | -74.19 | 46.61 45.55 | -172.0dBm | ------ Peter Kai
Jensen |
73, Mike
DK3WN
------------------------------
Message: 8
Date: Thu, 12 Jun 2008 21:55:07 -0400
From: Luc Leblanc <lucleblanc6(AT)videotron.ca>
Subject: [amsat-bb] Re: SEEDS June 12th: CW and Digitalker + SSTV
To: amsat-bb(AT)AMSAT.Org
Message-ID: <48519B3B.29559.36627E3(AT)lucleblanc6.videotron.ca>
Content-Type: text/plain; charset=US-ASCII
On 12 Jun 2008 at 23:14, Henk, PA3GUO wrote:
> Today SEEDS had both CW, and digitalker on.
>
> Actually the digitalker had the 'secret' code
> spoken, which, according to their WEB site, will
> enable you to receive the special digitalker QSL.
> So I did submit, let's see if I get it.
Just for the record it will be a big help if the "secret" code can be spelled
phonetically as i have an hearing problem from a diving
accident (According to my wife when i listen my music CD...) it will only
getting worse with age inversely proportional of the future
digitalker spokewomens age...
"-"
Luc Leblanc VE2DWE
Skype VE2DWE
www.qsl.net/ve2dwe
WAC BASIC CW PHONE SATELLITE
------------------------------
Message: 9
Date: Fri, 13 Jun 2008 17:36:20 +0000 (GMT)
From: andy thomas <andythomasmail(AT)yahoo.co.uk>
Subject: [amsat-bb] Yubileiny Rs30 tlm
To: amsat <amsat-bb(AT)amsat.org>
Message-ID: <300012.14190.qm(AT)web25607.mail.ukl.yahoo.com>
Content-Type: text/plain; charset=utf-8
+/- 1510u NB and in footprint of Korolev control centre:
mrxa2 mrxb2
rs30 us161 ibs12 usun0 isun0 itxa0 itxb6 ttxa65 ttxb66 tnap80 tab66 msep0
mcon53 sma115 smb69 mrxa2 mrxb2
rs30 us161 ibs12 usun1 isun0 itxa0 itxb6 ttxa65 ttxb66 tnap80
73 de G0SFJ
__________________________________________________________
Sent from Yahoo! Mail.
A Smarter Email http://uk.docs.yahoo.com/nowyoucan.html
------------------------------
Message: 10
Date: Fri, 13 Jun 2008 20:19:46 +0200
From: "Mike Rupprecht" <mail(AT)mike-rupprecht.de>
Subject: [amsat-bb] Re: Yubileiny Rs30 tlm
To: <andythomasmail(AT)yahoo.co.uk>, "'amsat'" <amsat-bb(AT)amsat.org>
Message-ID: <001401c8cd82$0fbfcdd0$2f3f6970$(AT)de>
Content-Type: text/plain; charset="iso-8859-1"
Hi Andy,
yes, agree - there was no APT data transmission on this pass.
from 1513 UTC to LOS - including your report :-)
1513 UTC rs30 us163 ibs12 usun1 isun0 itxa0 itxb6 ttxa65 ttxb66
tnap80 tab66 msep0 mcon53 sma101 smb138 mrxa2 mrxb2
1517 UTC rs30 us161 ibs12 usun0 isun0 itxa0 itxb6 ttxa65 ttxb66
tnap80 tab66 msep0 mcon53 sma105 smb69 mrxa2 mrxb2
1522 UTC rs30 us161 ibs12 usun1 isun0 itxa0 itxb6 ttxa65 ttxb66
tnap80 tab66 msep0 mcon53 sma108 smb66 mrxa2 mrxb2
1526 UTC rs30 us160 ibs12 usun2 isun0 itxa0 itxb6 ttxa65 ttxb66
tnap80 tab66 msep0 mcon53 sma91 smb65 mrxa2 mrxb2
You can see more telemetry (and my daily reports) on
www.dk3wn.info/satblog.shtml
73, Mike
DK3WN
-----Urspr?ngliche Nachricht-----
Von: amsat-bb-bounces(AT)amsat.org [mailto:amsat-bb-bounces(AT)amsat.org] Im
Auftrag von andy thomas
Gesendet: Freitag, 13. Juni 2008 19:36
An: amsat
Betreff: [amsat-bb] Yubileiny Rs30 tlm
+/- 1510u NB and in footprint of Korolev control centre:
mrxa2 mrxb2
rs30 us161 ibs12 usun0 isun0 itxa0 itxb6 ttxa65 ttxb66 tnap80 tab66 msep0
mcon53 sma115 smb69 mrxa2 mrxb2
rs30 us161 ibs12 usun1 isun0 itxa0 itxb6 ttxa65 ttxb66 tnap80
73 de G0SFJ
__________________________________________________________
Sent from Yahoo! Mail.
A Smarter Email http://uk.docs.yahoo.com/nowyoucan.html
_______________________________________________
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
------------------------------
_______________________________________________
Sent via amsat-bb(AT)amsat.org. 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 3, Issue 298
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