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CX2SA > SATDIG 20.08.11 20:06l 601 Lines 16694 Bytes #999 (0) @ WW
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Subj: AMSAT-BB-digest V6 479
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To : SATDIG@WW
Today's Topics:
1. ARISSAT telemetry - top submitter list (Mike Rupprecht)
2. ARISSAT-1 SQF (Pat McGrath)
3. Re: Turn off AGC when receiving BPSK-1000 (Dave Guimont)
4. Re: ARISSAT-1 SQF (Mark L. Hammond)
5. Re: ARISSAT-1 SQF (Dee)
6. ARISSat-1 Not Heard (Nader Omer)
7. LIGHTHOUSE WEEKEND (Peter Portanova)
8. Re: Official Word for the 70cm Antenna? (Clare Fowler)
9. Re: AMSAT-BB Digest, Vol 6, Issue 478 (Burns Fisher)
10. Re: Turn off AGC when receiving BPSK-1000 (i8cvs)
11. Re: ARISSat-1 Not Heard (g0mrf@xxx.xxxx
12. Fwd: ARISSAT heard on FUNcube Dongle - I/Q wav file read with
iSDR on iPad (Bernard Pidouxx)
13. Re: ARISSat telemetry and Doppler tuning (Ronald G. Parsons)
14. ARISSat-1 TLM (Nader Omer)
----------------------------------------------------------------------
Message: 1
Date: Fri, 19 Aug 2011 22:02:57 +0200
From: "Mike Rupprecht" <mail@xxxxxxxxxxxxxx.xx>
To: "'AMSAT'" <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] ARISSAT telemetry - top submitter list
Message-ID: <01d701cc5eaa$fdb1a1f0$f914e5d0$@xx>
Content-Type: text/plain; charset="us-ascii"
All,
you can find the latest statistic file of all telemetry submitters now here:
www.dk3wn.info/files/arissat/submitters.txt
There are actually 148 stations who forwarding her telemetry J
73, Mike
DK3WN
------------------------------
Message: 2
Date: Fri, 19 Aug 2011 14:35:02 -0700
From: "Pat McGrath" <ka6tya@xxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] ARISSAT-1 SQF
Message-ID: <000001cc5eb7$db21e700$9165b500$@xxx>
Content-Type: text/plain; charset="US-ASCII"
Can someone share with me the SATPC SQF file for ARISSAT-1.
------------------------------
Message: 3
Date: Fri, 19 Aug 2011 14:40:48 -0700
From: Dave Guimont <dguimon1@xxx.xx.xxx>
To: "i8cvs" <domenico.i8cvs@xxx.xx>, amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Turn off AGC when receiving BPSK-1000
Message-ID: <90.B8.20202.358DE4E4@xxxxxxxxxxxxx.xxxx.xx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
>For additional information read
>
> http://www.w2du.com/r2ch22.pdf
>
>and look at Fig 22-7 page 10 of 20 Radiation Pattern of the 1 1/2
>turn 1,25 wavelenght Quadrifilar Antennas.
Tnx, Dom for that info.
I received a number of requests for quadfilar information, again.
Goto
http://cid-1973adc8c1d3207c.skydrive.live.com/summary.aspx?sa=140581470
and see the five files starting with the pic Quad2.4gigs
Be very precise with the measurements, particularly on the 435...
I scaled it from the 2 meter, made a slight measuring error on the
driven filar, shortened it by 1/4" and the swr went from 3 to 1 to 1.6 to
1....
And use the BEST "N" connectors and coax that you can find, the most
expensive part of the antenna....
73, Dave, WB6LLO
dguimon1@xxx.xx.xxx
Disagree: I learn....
Pulling for P3E...
------------------------------
Message: 4
Date: Fri, 19 Aug 2011 18:09:43 -0400
From: "Mark L. Hammond" <marklhammond@xxxxx.xxx>
To: "Pat McGrath" <ka6tya@xxxx.xxx>, <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: ARISSAT-1 SQF
Message-ID: <NN9l1h00D4ltuWb05N9lLW@xxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Hi Pat,
Try this:
ARISSat-1,145918.5,0,USB,,,0,0,BPSK/CW-2
ARISSat-1,145950.0,0,FM,,,0,0,VOICE/SSTV
ARISSat-1,145930.0,435750.0,USB,LSB,REV,0,0,XPDR
Now, please note this assumes you have this entry in the AmsatName.txt file
too!!!
37772 98067CK ARISSat-1
73,
Mark N8MH
At 02:35 PM 8/19/2011 -0700, Pat McGrath wrote:
>Can someone share with me the SATPC SQF file for ARISSAT-1.
>
>
>
>
>
>_______________________________________________
>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: 5
Date: Fri, 19 Aug 2011 18:10:42 -0400
From: Dee <morsesat@xxxxxxxxx.xxx>
To: "'Pat McGrath'" <ka6tya@xxxx.xxx>
Cc: Amsat BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: ARISSAT-1 SQF
Message-ID: <004a01cc5ebc$d61d78a0$825869e0$@xxxxxxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Pat, here is the data
ARISSat-1,145918.5,0,USB,,,0,0,BPSK/CW-2
ARISSat-1,145950.0,0,FM,,,0,0,VOICE/SSTV
ARISSat-1,145930.0,435750.0,USB,LSB,REV,0,0,XPDR
ARISSat-1,145938.5,0,USB,,,0,0,CW-1
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx
On Behalf Of Pat McGrath
Sent: Friday, August 19, 2011 5:35 PM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] ARISSAT-1 SQF
Can someone share with me the SATPC SQF file for ARISSAT-1.
_______________________________________________
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: 6
Date: Fri, 19 Aug 2011 17:35:37 -0700 (PDT)
From: Nader Omer <st2nh@xxxxx.xxx>
To: amsat bb bb <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] ARISSat-1 Not Heard
Message-ID:
<1313800537.3064.YahooMailClassic@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
HI
ARISSat-1 Not Heard
Orbit #245
00:19 - 00:30 UTC
?
73 Nader st2nh
------------------------------
Message: 7
Date: Fri, 19 Aug 2011 20:45:51 -0400
From: "Peter Portanova" <wb2oqq@xxxxxxx.xxx>
To: <AMSAT-BB@xxxxx.xxx>
Subject: [amsat-bb] LIGHTHOUSE WEEKEND
Message-ID: <675B7AB47EDF478AA4111A4F5A52AAB7@xxxx>
Content-Type: text/plain; format=flowed; charset=iso-8859-1;
reply-type=original
Hello,
I will be operating, as W2GSB, from the historic Fire Island Lighthouse,
FN30, for the Great South Bay Amateur Radio Club tomorrow, 8-20 and 8-21st,
the first pass will be with SO-50, 16:30 U and all the subsequent FM passes.
A special certificate is available, mail to W2GSB Lighthouse, PO Box 1356,
West Babylon, NY 11704, thank you. Do not send envelope, club will supply.
73's Pete
WB2OQQ
www.massapequanyweather.com
------------------------------
Message: 8
Date: Fri, 19 Aug 2011 22:02:18 -0400
From: "Clare Fowler" <clarefowler@xxxxxx.xxx>
To: "amsat-bb" <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Official Word for the 70cm Antenna?
Message-ID: <8FAE45EDE66443F6936F644F106D9660@xxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
As ARISSat1 now is opertional in high power at a decent hour in the evening
here I have been making a few attempts at SSB transponder operation.
I have 2x10 turn helix atennas and a 100 watt brick amplifier which
would give me an ERP in the order of 4KW on the 70 cm uplink.
The Aug 19 23:55 UTC pass had a max el of 78 degrees. For some
reason the satellite turned off and on or switched between high and low
power
several times during the pass. The transponder downlink background noise
as it went to high power was clearly noticeable and the S meter went up
from S1 to S2. The 145.950 FM voice was 10 over S9.
With 100 watts SSB out my 2 m downlink sig at peak went up to S4
and was Q5 but still with some noise. Reducing the uplink to 50 watts
produced a noticeable reduction of the downlink into the noise.
On two previous passes I was able to detect that another operator
had gotten my call OK but I was unable to get theirs as their signal
was well into the noise.
I have not attempted CW which of course will give a much better
result.
Clare
VE3NPC
----- Original Message -----
From: "Phil Karn" <karn@xxxxxxxx.xxx>
To: "Mike Schaffer" <daetsort@xxxxx.xxx>
Cc: <amsat-bb@xxxxx.xxx>
Sent: Thursday, August 18, 2011 11:16 PM
Subject: [amsat-bb] Re: Official Word for the 70cm Antenna?
> On 8/17/11 5:29 PM, Mike Schaffer wrote:
>
>> What is the official AMSAT/ARISSat1 team finding on the ARISSat-1 70cm
>> quarter-wave
>> receive antenna on the bottom of the satellite? I have not heard updated
>> news about that
>> since the jettison occurred.
>
> As far as I know, and this is *NOT* the official word, the correct
> antenna was installed but the external section of the element was broken
> off. There's about 1.5" of antenna blade embedded in the epoxy, which
> isSSB
> why the antenna still hears pretty well. Reports of users getting into
> the transponder with as little as 1W prove it can't be the dummy load.
>
> -Phil
> _______________________________________________
> 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: Fri, 19 Aug 2011 22:32:35 -0400
From: Burns Fisher <burns@xxxxxx.xx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: AMSAT-BB Digest, Vol 6, Issue 478
Message-ID:
<CABX7KxUd-4HQ5q4TRCL0XX3qmts_FbZd2Tf0UzcXQBa-eMJoxw@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Thanks for the ideas, Mike. I am using FM for sure, and no I was never able
to receive ARISSat-1 with the stock antenna in the shack.
I'll certainly try removing the duplexer. And thank for the info about the
roofing material. I don't have aluminum siding, but I don't know about that
kind of roofing material. The roof was replaced recently, is all I can tell
you at the moment. I'll also try outside.
Thanks again
Burns, W2BFJ
-------------------
Burns:
?
Make sure your receive mode for frequency 145.950 is FM on your
Kenwood F6A handheld.
?
Before you?upgraded with additional hardware could you receive
ARISSat-1 signals using the stock antenna inside your shack?
?
If you can, the next step is to?remove the Diamond 2m/70cm
duplexer as it might be blocking the amplified signal from your SSB?
2m pre-amp.
?
If that does not?help, then?it could be that?the satellite signal are being
degraded more than 75 percent or blocked entirely by the orient strand
board (OSB) radiant barrier roof sheathing which is backed with a
specially designed aluminum foil. The same goes if your dwelling
exterior is fabricated with aluminum siding.
?
It that is the case, then your only hope is to mount the antenna outside.
?
?
73's
?
Mike Schaffer
KA3JAW
Tampa, Florida
EL87
------------------------------
Message: 10
Date: Sat, 20 Aug 2011 07:01:57 +0200
From: "i8cvs" <domenico.i8cvs@xxx.xx>
To: "AMSAT-BB" <amsat-bb@xxxxx.xxx>, "Dave Guimont"
<dguimon1@xxx.xx.xxx>
Subject: [amsat-bb] Re: Turn off AGC when receiving BPSK-1000
Message-ID: <003d01cc5ef6$4a004840$0401a8c0@xxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
----- Original Message -----
From: i8cvs
To: Dave Guimont
Sent: Saturday, August 20, 2011 6:54 AM
Subject: Re: [amsat-bb] Re: Turn off AGC when receiving BPSK-1000
Hi Dave, WB6LLO
Please look also at my article "Experimental Investigation of 2400 MHz
Quadrifilar Helix Antennas" publisched on AMSAT-Journal May/June 2004
Best 73" de
i8CVS Domenico
Pulling for P3E...
----- Original Message -----
From: Dave Guimont
To: i8cvs ; amsat-bb@xxxxx.xxx
Sent: Friday, August 19, 2011 11:40 PM
Subject: Re: [amsat-bb] Re: Turn off AGC when receiving BPSK-1000
For additional information read
http://www.w2du.com/r2ch22.pdf
and look at Fig 22-7 page 10 of 20 Radiation Pattern of the 1 1/2
turn 1,25 wavelenght Quadrifilar Antennas.
Tnx, Dom for that info.
I received a number of requests for quadfilar information, again.
Goto
http://cid-1973adc8c1d3207c.skydrive.live.com/summary.aspx?sa=140581470
and see the five files starting with the pic Quad2.4gigs
Be very precise with the measurements, particularly on the 435...
I scaled it from the 2 meter, made a slight measuring error on the
driven filar, shortened it by 1/4" and the swr went from 3 to 1 to 1.6 to
1....
And use the BEST "N" connectors and coax that you can find, the most
expensive part of the antenna....
73, Dave, WB6LLO
dguimon1@xxx.xx.xxx
Disagree: I learn....
Pulling for P3E...
------------------------------
Message: 11
Date: Sat, 20 Aug 2011 04:37:10 -0400 (EDT)
From: g0mrf@xxx.xxx
To: st2nh@xxxxx.xxxx amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: ARISSat-1 Not Heard
Message-ID: <8CE2D2B7CB77C94-17DC-32D1B@xxxxxxxxxxxx.xxxxxx.xxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Hello Nader.
I heard the sat go into eclipse over Europe earlier in the evening. It
appeared to shut down immediately it passed into darkness. The battery does
not appear to have any capacity left.
Perhaps all AMSAT spacecraft should be designed to operate on solar panels
alone after the battey fails. We are very lucky with ARISSat-1, not so
fortunate with AO-40
Regards
David
-----Original Message-----
From: Nader Omer <st2nh@xxxxx.xxx>
To: amsat bb bb <amsat-bb@xxxxx.xxx>
Sent: Sat, 20 Aug 2011 1:51
Subject: [amsat-bb] ARISSat-1 Not Heard
HI
ARISSat-1 Not Heard
Orbit #245
00:19 - 00:30 UTC
73 Nader st2nh
_______________________________________________
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: 12
Date: Sat, 20 Aug 2011 10:58:45 +0200
From: Bernard Pidouxx <f6bvp@xxxx.xx>
To: Phil Karn <karn@xxxx.xxx>, Charles Scharlau
<charles.scharlau@xxxxx.xxx>, Laurent HAAS - F6FVY <f6fvy@xxxx.xx>,
Laurent F6GOX <f6gox@xxxx.xx>
Cc: AMSAT-BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Fwd: ARISSAT heard on FUNcube Dongle - I/Q wav
file read with iSDR on iPad
Message-ID: <263E2725-B962-4A94-A8B3-64A2A9B73C46@xxxx.xx>
Content-Type: text/plain; charset=utf-8
>
> Hello,
>
> Last night Aug 19, I captured ARISSAT VHF transmission using FCD and
Audacity audio software to save I/Q wide band signal on my Mandriva Linux
system.
> I monitored the signals using quisk. Doppler shift was not too fast at the
end of a nearly overhead pass in Paris.
> For this first attempt I could note manage to listen ARISSAT and save the
signal simultaneously.
> At the end of the pass, ARISSAT was very week but I decided to record the
FCD output blindly.
> I saved stereo .wav file with 44100 samples per seconds for compatibility
with iPad iSDR application. I could then play back recorded file with iSDR.
Despite the faint signals Waterfall display showed clearly CW and BPSK
beacons and fine tuning the listening frequency through the touch screen
sensitivity of the iPad application let me decode parts of CW beacon with
iSDR 200 Hz filter.
>
> I will upload soon recorded wav file and screen capture of waterfall on my
site.
>
> 73 de Bernard, f6bvp
>
> Envoy? de mon iPad
>
>>
------------------------------
Message: 13
Date: Sat, 20 Aug 2011 08:40:24 -0500
From: "Ronald G. Parsons" <w5rkn@xxxxx.xxx>
To: "AMSAT-BB" <AMSAT-BB@xxxxx.xxx>
Subject: [amsat-bb] Re: ARISSat telemetry and Doppler tuning
Message-ID: <CBC9BEF43D1C451589B4AC9ADC5C63B0@xxxxxxxxx>
Content-Type: text/plain; format=flowed; charset="UTF-8";
reply-type=original
One thing I've discovered which makes things go more smoothly is to reduce
the minimum Doppler tuning interval.
I am using SatPC32 V12.8a. There are two parameters in the CAT menu -- the
Speed which I changed to 5x (which is not sticky) and the minimum Doppler
tuning step for SSB which I set to zero (it will be sticky if you remember
to click Store).
With these two changes, although the Doppler correction may drift off, it
does so very smoothly, which I assume allows the decoding of the BPSK data
to be more accurate.
Ron W5RKN
------------------------------
Message: 14
Date: Sat, 20 Aug 2011 07:06:39 -0700 (PDT)
From: Nader Omer <st2nh@xxxxx.xxx>
To: amsat bb bb <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] ARISSat-1 TLM
Message-ID:
<1313849199.18371.YahooMailClassic@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
HI
?
UTC 13:32 - 13:43??? .
Orbit # 253.
Good signal the entire pass.
The spacecraft in High Power Mode.
MET was 2666.
58 frames grabbed and forwarded.
?
73?s Nader
------------------------------
_______________________________________________
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 6, Issue 479
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