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CX2SA > SATDIG 10.08.11 21:06l 424 Lines 12844 Bytes #999 (0) @ WW
BID : AMSATBB6453
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Subj: AMSAT-BB-digest V6 453
Path: IZ3LSV<IK2XDE<DB0RES<ON0AR<HS1LMV<CX2SA
Sent: 110810/1904Z @:CX2SA.LAV.URY.SA #:21192 [Minas] FBB7.00e $:AMSATBB6453
From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. 5 in EM55 (wa4hfn@xxxxxxx.xxxx
2. New host for ->Sample ARISSat-1 recording with Funcube Dongle
using HDSDR (Mark L. Hammond)
3. Re: Mirage preamps (Jari Koivurinne)
4. ARISSat-1 TLM (Luc Leblanc)
5. RATS article (Andy Brian)
6. ARISSat-1 BPSK: time to ask for help debugging my system (PA3GUO)
7. Re: Decoding wideband recordings (Iain Young, G7III)
8. KB5WIA CM79+ Expedition Trip Report (David Palmer KB5WIA)
9. AMSAT Downloadable Keps (Clint Bradford)
10. AO-27 Contact 8/10/2011 Please verify (John Henderson N4NAB)
11. EM99 Thurs, FN01 Fri. (Helmuth Kump)
----------------------------------------------------------------------
Message: 1
Date: Wed, 10 Aug 2011 13:41:54 +0000 (UTC)
From: wa4hfn@xxxxxxx.xxx
To: AMSAT <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] 5 in EM55
Message-ID:
<87591417.183178.1312983714194.JavaMail.root@xxxxxxx.xxxxxxxxxxx.xx.xxxx.xxxxx
xx.xxx>
Content-Type: text/plain; charset=utf-8
Congrats to Jeff NX9B award # 21 for 5 in EM55
Damon WA4HFN em55
------------------------------
Message: 2
Date: Wed, 10 Aug 2011 10:24:10 -0400
From: "Mark L. Hammond" <marklhammond@xxxxx.xxx>
To: Amsat - BBs <amsat-bb@xxxxx.xxx>, funcube@xxxxxxxxxxx.xx.xx
Subject: [amsat-bb] New host for ->Sample ARISSat-1 recording with
Funcube Dongle using HDSDR
Message-ID:
<CAPRXzyqP=CU6Qhu_WT=gsy+=8z2maQy7J62tYi85E+Vrw-cdbA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=windows-1252
Okay, silly me.
Here is the file hosted on a much better server ;)
ftp://ftp.amsat.org/amsat/telemetry/arissat/recordings/HDSDR_20110809_104200Z_
145940kHz_RF.wav
73!
Mark N8MH
--- On Wed, 10/8/11, Mark L. Hammond <marklhammond@xxxxx.xxx> wrote:
> > I've been recording quite a few passes of ARISSat-1 using
> > the Funcube Dongle (FCD) SDR and the HDSDR program.
> > The resulting file from a 10 min pass, recording the whole
> > FCD passband, is about 250MB. Below is a link to a
> > sample from this morning.
> >
>
https://docs.google.com/leaf?id=0B9vJkMVYq-VOYjM5NTNiZDYtODMyMS00NjE4LTlhYWEtN
WNlZmQ1YWI4ODRi&hl=en_US&pli=1
>
> Evidently a very popular download as I see the Google limit for today has
> been exceeded.
>
> 73 Trevor M5AKA****
>
> __._,_.___****
>
> Reply to
*sender*<m5aka@xxxxx.xx.xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
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> *via web
post*<http://uk.groups.yahoo.com/group/funcube/post;_ylc=X3oDMTJxNG84ZHJmBF9TA
zk3NDkwNTA1BGdycElkAzcxMDU4MzA4BGdycHNwSWQDMTY5MDA2MzEwOARtc2dJZAMzMTI1BHNlYwN
mdHIEc2xrA3JwbHkEc3RpbWUDMTMxMjk3MjEyMg--?act=reply&messageNum=3125>|
> *Start a new
topic*<http://uk.groups.yahoo.com/group/funcube/post;_ylc=X3oDMTJmdnJraTF0BF9T
Azk3NDkwNTA1BGdycElkAzcxMDU4MzA4BGdycHNwSWQDMTY5MDA2MzEwOARzZWMDZnRyBHNsawNudH
BjBHN0aW1lAzEzMTI5NzIxMjI->
> ****
>
> Messages in this
topic<http://uk.groups.yahoo.com/group/funcube/message/3122;_ylc=X3oDMTM1a3Z0c
GQyBF9TAzk3NDkwNTA1BGdycElkAzcxMDU4MzA4BGdycHNwSWQDMTY5MDA2MzEwOARtc2dJZAMzMTI
1BHNlYwNmdHIEc2xrA3Z0cGMEc3RpbWUDMTMxMjk3MjEyMgR0cGNJZAMzMTIy>(
> *4*) ****
>
> *Recent Activity:* ****
>
> **? ***New
Members<http://uk.groups.yahoo.com/group/funcube/members;_ylc=X3oDMTJnb25iNTk1
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N2bWJycwRzdGltZQMxMzEyOTcyMTIy?o=6>
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> Visit Your
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kwNTA1BGdycElkAzcxMDU4MzA4BGdycHNwSWQDMTY5MDA2MzEwOARzZWMDdnRsBHNsawN2Z2hwBHN0
aW1lAzEzMTI5NzIxMjI->
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>
> [image: Yahoo!
Groups]<http://uk.groups.yahoo.com/;_ylc=X3oDMTJlbDBwN2wwBF9TAzk3NDkwNTA1BGdyc
ElkAzcxMDU4MzA4BGdycHNwSWQDMTY5MDA2MzEwOARzZWMDZnRyBHNsawNnZnAEc3RpbWUDMTMxMjk
3MjEyMg-->
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>
--
Mark L. Hammond [N8MH]
------------------------------
Message: 3
Date: Wed, 10 Aug 2011 10:36:14 +0300
From: "Jari Koivurinne" <jari.koivurinne@xxxx.xxx>
To: "Luc Leblanc" <lucleblanc6@xxxxxxxxx.xx>
Cc: amsat-bb@xxxxx.xxxx eu-amsat@xxxxxxxxxxx.xxx
Subject: [amsat-bb] Re: Mirage preamps
Message-ID:
<b734471e073111daa21c36a7783bdd7c.squirrel@xxxxxxx.xxxx.xxx>
Content-Type: text/plain;charset=iso-8859-1
>>
>> There is also another possible issue to consider in that the 847 when
>> first powered up sends a full power transmit for a very short time.
>
As does all those 800-series YAESUs... 8-(
Very bad ALC-circuit. Some of them having longer delay --> longer
pulse out.
>
> Could be this is the missing link explaining why i burn 2 preamp in the
> past? but i always put the power knob at minimum when i turned
> off the 847. I will have to test it as i measure about 5W even if the RF
power
> is set to 0!! Full power i'm not sure but even 5W is enough
> to kill a preamp
>
> Luc Leblanc VE2DWE
>
-jari oh3uw
------------------------------
Message: 4
Date: Wed, 10 Aug 2011 06:35:12 -0400
From: Luc Leblanc <lucleblanc6@xxxxxxxxx.xx>
To: amsat-bb@xxxxx.xxx
Cc: eu-amsat@xxxxxxxxxxx.xxx
Subject: [amsat-bb] ARISSat-1 TLM
Message-ID: <4E425EE0.30201.E7DC43@xxxxxxxxxxx.xxxxxxxxx.xx>
Content-Type: text/plain; charset=US-ASCII
My ARISSat-1 telemetry capture is progressing at a slow pace just need to
capture more frames!
Pictures on: www.qsl.net/ve2dwe
"-"
Luc Leblanc VE2DWE
Skype VE2DWE
www.qsl.net/ve2dwe
DSTAR urcall VE2DWE
WAC BASIC CW PHONE SATELLITE
------------------------------
Message: 5
Date: Wed, 10 Aug 2011 17:34:51 +0200
From: Andy Brian <briaandy@xxxxx.xxx>
To: AMSAT-BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] RATS article
Message-ID:
<CADMEjK-n2RAO_-aU8ONHBav0iD=3Kwervk3D7uA6ncWJ3Hz4qA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Hi,
anyone have copy of this article about noise measure?
RATS Receiver Alignment Test-Set, R. Blackwell GM4PMK, July pp 13-18
August pp40-43
1995. Radio Communications ( RSGB)
I'm interesting to read if anyone can help me get that,
Thanks, best regards AB
------------------------------
Message: 6
Date: Wed, 10 Aug 2011 18:07:52 +0200
From: PA3GUO <pa3guo@xxxxxxx.xx>
To: pa3guo@xxxxx.xxxx amsat-bb@xxxxx.xxx
Subject: [amsat-bb] ARISSat-1 BPSK: time to ask for help debugging my
system
Message-ID: <20110810180753.HP8NS.620.root@xxxxxxxx.xxxxxx.xx>
Content-Type: text/plain; charset=utf-8
Time to ask for help ...
Somehow my set-up for ARISSat BPSK decoding is not working.
My I kindly ask for your suggestions ?
Using an FCD & HDSDR I record the passes.
When I play back I see this freq spectrum.
Should such a result (S/N Ratio wise) be enough for the decoder to work ?
http://www.pa3guo.com/arissat1_pa3guo_bpsk.jpg
Thanks for your suggestions !
(also on your own settings of HDSDR, eg sampling rate etc.)
Henk, PA3GUO
------------------------------
Message: 7
Date: Wed, 10 Aug 2011 17:20:13 +0100
From: "Iain Young, G7III" <g7iii@xxxxx.xxx>
To: Amsat - BBs <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Decoding wideband recordings
Message-ID: <4E42AFBD.2000702@xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
On 09/08/11 23:54, Phil Karn wrote:
> It's been suggested that I modify my ARISSat-1 BPSK-1000 telemetry
> demodulator/decoder to accept wideband quadrature (I & Q) recordings
> like those produced by most of the software defined radios out there.
>
> This is fundamentally not that hard, but first I need some information.
>
> How many people could actually use this? What is the format of the
> recorded files? Is there a standard, or does each make of SDR produce
> its own?
I'd use it. In fact I drive my Funcube Dongle with gnuradio. It would
mean I could simplify my flow graphs, and not have to stick have the
audio out to a loopback ALSA soundcard, and then into your decoder.
(I could then squirt the I/Q stream to a FIFO, and pump that to your
decoder, and save all the blocks needed to do the SSB stuff, and
dropping it down to audio)
In fact, IIRC, its not that hard in gnuradio to do BPSK decoding anyway,
it's just no-one's actually done it. You have to just unhook the
differential part of the decoder AIUI. Easy in python, but not possible
so much in the in the gnuradio-companion, which I use to construct the
flow graphs graphically
73s
Iain
------------------------------
Message: 8
Date: Wed, 10 Aug 2011 11:09:03 -0700
From: David Palmer KB5WIA <kb5wia@xxxxx.xxx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Cc: "Moore, Bill, NC1L \(ARRL Awards Branch\)" <nc1l@xxxx.xxx>,
kb8u_vhf@xxxxxxx.xxx
Subject: [amsat-bb] KB5WIA CM79+ Expedition Trip Report
Message-ID:
<CAO-vtPNEBo7407FMDkRLJdgH8y1RYbP0S2SHqSwbS0K-XnJH=w@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Hi Everyone,
Well, I'm back from the CM79/CM89/CN70/CN80 grid expedition. It was
quite an adventure! Operating ham radio from the CM79 corner
certianly is difficult -- but it was really rewarding to actually make
contacts from up there. I made a total of four trips up and down the
mountain, hiking over 20 miles with almost 5000 feet of climbing.
Thanks to everyone who was trying to contact me, and for your patience
dealing with my weak signals!!
I've put a full writeup with photos and video on my website at:
http://kb5wia.blogspot.com
And if you want the short version and just want to see the operating
conditions, you can watch the video tour:
http://www.youtube.com/watch?v=ef5_cYzwIZo
Briefly: I was able to stick fully to the plan -- and operate
exclusivley from the actual intersection of the four grids down the
hill from the ridge, using the remote antenna for the low eastern
passes. The weather on the trip was great -- good temperatures,
little wind, and sunny. The actual area of the grid intersection is
heavily forested, and that really soaked up the UHF downlink signals
from the sats! I didn't see any ticks, rattlesnakes, bears, nor
mountain lions -- but did see plenty of mosquitoes so I was glad to
have a full can of DEET. Solar power worked well. Operating from the
exact grid intersection wasn't easy, at first I thought it might be
impossible, but over time I figured out ways to make it work. I was
very fortunate not to have any equipment failures or other disasters!
Thanks also to everyone who provided advice before the trip,
especially Bill Moore at ARRL HQ and Russ KB8U for tips about the
area. See my full writeup for all the details and pictures.
As usual, no need to send me a QSL card if you've already sent me one
before -- just send me an email with the contact details and if you're
in the logs I'll send you a card back.
73 de Dave KB5WIA
------------------------------
Message: 9
Date: Wed, 10 Aug 2011 11:47:17 -0700
From: Clint Bradford <clintbradford@xxx.xxx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] AMSAT Downloadable Keps
Message-ID: <2F0CC157-2DB4-405C-9BE3-F6A922CF84AC@xxx.xxx>
Content-Type: text/plain; CHARSET=US-ASCII
Do "we" expect that the AMSAT downloadable Keplerian data will include
ARISSat-1/Kedr/RADIOSKAF-B when posted later this week?
Clint Bradford, K6LCS
------------------------------
Message: 10
Date: Wed, 10 Aug 2011 14:48:22 -0400
From: "John Henderson N4NAB" <jah@xx.xx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] AO-27 Contact 8/10/2011 Please verify
Message-ID: <002901cc578e$14afa650$3e0ef2f0$@xx.xx.xxx>
Content-Type: text/plain; charset="us-ascii"
I worked an N8?? Station from EL41 on 8/10/20011 on the 18:15Z pass.... I
copied the call sign as N8?O... Pals verify the call sign please.
John N4NAB FM14lq
------------------------------
Message: 11
Date: Wed, 10 Aug 2011 14:48:27 -0400
From: Helmuth Kump <helmuth.kump@xxxxx.xxx>
To: amsat-bb <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] EM99 Thurs, FN01 Fri.
Message-ID:
<CAMda3Pf86=iAgatOPkoR9TKUGsOELYPrQc38nrMw9Yqs5gOq1A@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
I'll be returning to these two grids tomorrow and Friday, working most
or all of the daytime passes from about 1300 to 2100 UTC.
73 Doc KT3L
------------------------------
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