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CX2SA > SATDIG 26.04.14 21:02l 609 Lines 18590 Bytes #999 (0) @ WW
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Today's Topics:
1. Re: AO-07 Distorted audio (Andrew Glasbrenner)
2. Re: Help (MICHAEL)
3. Re: AO-07 Distorted audio (Rick Walter)
4. Re: AO-07 Distorted audio (Bryce Salmi)
5. AO-07 an US station answer my call. (LU2DPW Juan Carlos)
6. Re: HELP (Mr. Stephen Thornber FRSPH FBCS CITP CISM)
7. Re: AO-07 an US station answer my call. (Paul Stoetzer)
8. Re: AO-07 Distorted audio (i8cvs)
9. ISEE-3 Reboot Project (Ethan Waldo)
10. Re: ISEE-3 Reboot Project (Stefan Wagener)
----------------------------------------------------------------------
Message: 1
Date: Fri, 25 Apr 2014 20:40:47 +0200
From: Andrew Glasbrenner <glasbrenner@xxxxxxxxxx.xxx>
To: Paul Stoetzer <n8hm@xxxx.xxx>
Cc: Peter Wilson <protest@xxxxxxxxxxx.xxx>, AMSAT -BB
<amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: AO-07 Distorted audio
Message-ID: <8E05B872-02B9-4998-8D06-07707D17CDF2@xxxxxxxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Well stated Paul!
Additionally, I fear some users just turn up the power to overcome a poor
receive system.
73, Drew KO4MA
Sent from my iPhone
> On Apr 25, 2014, at 8:23 PM, Paul Stoetzer <n8hm@xxxx.xxx> wrote:
>
> Absolutely!
>
> The recommendation at the time of launch was to limit power output to no
> more than 100W ERP (which is about 25 watts to a small antenna like an Elk
> or an Arrow). This is even more critical now since the solar panels are
> almost certainly not supplying enough power to drive the transmitter to
> it's full power output. At certain times of the year, there are poor solar
> angles on the panels too, which reduces power availability. Remember too
> that AO-7 will enter a period where it eclipses on every orbit over the
> south pole within the next week or so. That period will last for about 9
> weeks. It should be in Mode B every day as a result, but from what I've
> read about past eclipse cycles, it can act a bit odd during that time.
>
> On too many passes, I hear distorted audio and reflections throughout the
> transponder from it being hit too hard with SSB and especially CW. CW,
> being full power at key down, unlike SSB, is even harder on a linear
> transponder.
>
> If everyone would just have the courtesy to keep their uplink power to a
> reasonable level, AO-7 can be a very enjoyable satellite with a large
> footprint providing the best DX opportunities currently available.
> Unfortunately, this problem is not new as a glance at the AMSAT Newsletters
> from 1974-1981 shows.
>
> I recommend the following reading: The Editorial + Letter from W4NUL/5 in
> the March 1976 AMSAT Newsletter, the AMSAT-OSCAR-7 QRP Test Telemetry
> Report in the November 1976 AMSAT Newsletter, and the June 1976 QRP Test
> Results from the December 1976 AMSAT Newsletter. All available here:
> http://www.ka9q.net/AMSAT-Newsletter-1976.pdf
>
> Please calculate your ERP ( http://www.csgnetwork.com/antennaecalc.html )
> and keep it to no more than 100W.
>
> 73,
>
> Paul Stoetzer, N8HM
> Washington, DC
>
>
>> On Fri, Apr 25, 2014 at 11:12 AM, Dave Webb KB1PVH <kb1pvh@xxxxx.xxx>
wrote:
>>
>> Only when people are running too much power. It's called FM'ing.
>>
>> Dave-KB1PVH
>>
>> Sent from my Verizon Wireless Droid RAZR
>>> On Apr 25, 2014 11:10 AM, "Peter Wilson" <protest@xxxxxxxxxxx.xxx> wrote:
>>>
>>> Just worked IK8YSS on AO-07.
>>>
>>>
>>>
>>> Haven't worked this satellite for a while and whilst I know the bird is
>>> very
>>> old, the audio on this pass was very distorted.
>>>
>>>
>>>
>>> Is this common?
>>>
>>>
>>>
>>> Peter
>>>
>>> G8KEK
>>>
>>> _______________________________________________
>>> 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
>> _______________________________________________
>> 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
> _______________________________________________
> 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: 2
Date: Fri, 25 Apr 2014 16:02:07 -0400
From: MICHAEL <mikef1234@xxxx.xxx>
To: "AMSAT" <AMSAT-BB@xxxxx.xxx>
Subject: [amsat-bb] Re: Help
Message-ID: <BLU0-SMTP1808FC7AF419B59B8B61FF9CB5A0@xxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Hi Stephan!
AMSAT U.K. has a wealth of information on their website for beginners. You
may want to take a look there.
73's
Mike / N8GBU
---
This email is free from viruses and malware because avast! Antivirus
protection is active.
http://www.avast.com
------------------------------
Message: 3
Date: Fri, 25 Apr 2014 16:36:27 -0400
From: Rick Walter <wb3csy@xxxxx.xxx>
To: Alan Biddle <APBIDDLE@xxxxxxx.xxx>
Cc: Peter Wilson <protest@xxxxxxxxxxx.xxx>, "amsat-bb@xxxxx.xxxx
<amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: AO-07 Distorted audio
Message-ID:
<CAJckjgNw1jPzL4EpV0iPJU=ORWA4fCJYOTZ_xg9ToTx1hSNAzw@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
What about this cause?
Space Weather News for April 25, 2014
http://spaceweather.com
X-FLARE: On April 25th, an active region near the sun's western limb
erupted, producing an impulsive X-class solar flare. A pulse of extreme UV
radiation from the flare ionized Earth's upper atmosphere and caused a
shortwave radio blackout on the dayside of Earth. However, a CME hurled
into space by the explosion will miss our planet. Check
http://spaceweather.com for updates.
Rick - WB3CSY
On Fri, Apr 25, 2014 at 12:32 PM, Alan <wa4sca@xxxxx.xxx> wrote:
> Peter,
>
> That can happen when the illumination is poor, but also if there is
> someone using too much power.
> They can bounce the entire transponder, resulting in very choppy,
> distorted audio.
>
> 73s,
>
> Alan
> WA4SCA
>
>
> <-----Original Message-----
> <From: amsat-bb-bounces@xxxxx.xxx
> <[mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Peter Wilson
> <Sent: Friday, April 25, 2014 10:04 AM
> <To: amsat-bb@xxxxx.xxx
> <Subject: [amsat-bb] AO-07 Distorted audio
> <
> <Just worked IK8YSS on AO-07.
> <
> <
> <
> <Haven't worked this satellite for a while and whilst I know
> <the bird is very
> <old, the audio on this pass was very distorted.
> <
> <
> <
> <Is this common?
> <
> <
> <
> <Peter
> <
> <G8KEK
> <
> <_______________________________________________
> <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
> <
>
> _______________________________________________
> 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
>
--
Sent from Rick's gmail account
------------------------------
Message: 4
Date: Fri, 25 Apr 2014 13:37:36 -0700
From: Bryce Salmi <bstguitarist@xxxxx.xxx>
To: "APBIDDLE@xxxxxxx.xxxx <APBIDDLE@xxxxxxx.xxx>
Cc: Peter Wilson <protest@xxxxxxxxxxx.xxx>, "amsat-bb@xxxxx.xxxx
<amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: AO-07 Distorted audio
Message-ID:
<CAN5j0sqiijQVtXvNs68341-3_v3N0XjteD-PP689SKUS6nsFgQ@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
I wonder if it would be possible to build a system that used rssi to limit
each signal and act accordingly. I think ao40 had something similar.
A digit sat could be sent the tx power and use that in combination with
rssi to adjust itself too. Just some quick thoughts
Bryce
On Friday, April 25, 2014, Alan <wa4sca@xxxxx.xxx> wrote:
> Peter,
>
> That can happen when the illumination is poor, but also if there is
> someone using too much power.
> They can bounce the entire transponder, resulting in very choppy,
> distorted audio.
>
> 73s,
>
> Alan
> WA4SCA
>
>
> <-----Original Message-----
> <From: amsat-bb-bounces@xxxxx.xxx <javascript:;>
> <[mailto:amsat-bb-bounces@xxxxx.xxx <javascript:;>] On Behalf Of Peter
> Wilson
> <Sent: Friday, April 25, 2014 10:04 AM
> <To: amsat-bb@xxxxx.xxx <javascript:;>
> <Subject: [amsat-bb] AO-07 Distorted audio
> <
> <Just worked IK8YSS on AO-07.
> <
> <
> <
> <Haven't worked this satellite for a while and whilst I know
> <the bird is very
> <old, the audio on this pass was very distorted.
> <
> <
> <
> <Is this common?
> <
> <
> <
> <Peter
> <
> <G8KEK
> <
> <_______________________________________________
> <Sent via AMSAT-BB@xxxxx.xxx <javascript:;>. 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@xxxxx.xxx <javascript:;>. 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, 25 Apr 2014 14:22:42 -0700 (PDT)
From: LU2DPW Juan Carlos <lu2dpw@xxxxx.xxx.xx>
To: AMSAT -BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] AO-07 an US station answer my call.
Message-ID:
<1398460962.89211.YahooMailNeo@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
Hello to all
In recent AO-7 pass about 20:23 UTC in mode B, I'm calling in CW on 145952
down and copy an
W...... station answer me.
Thanks for your answer and please call me next Sunday in Mode B window to USA.
I work two US station in CW with distance record in 2008.
My elements are very simple: FT-726R with 10w input(I opined about 5w output)
Now my antennas: In tx: Diamond X-200 vertical and in Rx: 5 element Yagui
home brew for 50Mhz.
In 2008 QSOs I'm using same X-200 in tx and Quad Swiss TET in rx.
73 de Juan - LU2DPW - GF05gi
------------------------------
Message: 6
Date: Fri, 25 Apr 2014 20:45:14 +0100
From: "Mr. Stephen Thornber FRSPH FBCS CITP CISM"
<skthornber@xx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: HELP
Message-ID: <12088C88-5957-4800-BB76-67A26000D2E4@xx.xxx>
Content-Type: text/plain; charset=windows-1252
Hello all,
Dan Cussen asked me to list kit and interests.
IN THE SHACK.
Computer in the shack MAC PRO TOWER - With VMWare so I can run PC(XP) on the
mac. (also got a couple of iPads ) the shack is finer connected networked to
a synology disc station and there is a MacBookPro on the network in the house.
Older (first HF rig) Yaesu FT-817 UHF/VHF/HF Low power - currently used only
for local 2mtr repeater.
KENWOOD TS 2000 VHF/UHF HF Has SAT features. No Antenna (Has separate
VHF/UHF & 1.2Ghz connectors ) currently I do not have suitable antenna
awaiting ideas. HAS SignalLink connected and to Computer for Ham Radio Delux
connection
ICOM IC7000 [AT-100ProII Autotuner] Connected to two G5RV Jr]
2 x SCS PTC-IIusb DSP Multimode PACTOR Controllers these have ability (Not
that I know how in most cases) to do Pactor, amt or, rtty, fax/sstv, CW,
Packet
Rotator is dead - so will buy new onadvice.
I can will change any / all of this configuration on advice
I have a morse key and paddle but have NO morse.
More importantly is it worth doing any longer - I have listened for a long
time and not heard much chit chat about satellite or space or radio astronomy.
As for what interests me - all sorts, just getting the stuff to work and
talk voice or digitally to somebody else would be a good start. I want to
know if there are sats that can be accessed regularly and relatively easily
from the UK? Is there much activity.
I would do weather stuff, moon bounce, data, packet, aprs or anything else
for that matter if I could and understood (I mean i'm not stupid I do know
some stuff) more about what was out there to do and get my teeth into. Is
there any real research stuff worth doing and so the list goes on with the
questions.
for Dave G4DPZ - I have a FunCube dongle, lost interest when I couldn't get
anything out of it on day one? so perhaps you can help me get my monies
worth their too.
Cheers all for the replies thus far.
Stephen G6SGA
Stephen Thornber
FRSPH FBCS CITP CISM
Chair
Medanaid is a registered Charity https://medanaid.com/
Registered in England 1138609
Registered Office: 18 Lichfield Road, ST7 1SQ
------------------------------
Message: 7
Date: Fri, 25 Apr 2014 18:02:49 -0400
From: Paul Stoetzer <n8hm@xxxx.xxx>
To: LU2DPW Juan Carlos <lu2dpw@xxxxx.xxx.xx>
Cc: AMSAT -BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: AO-07 an US station answer my call.
Message-ID:
<CABzOSOqDaBet4YX_4dOOoFAbUxKp8AS4bBeMHSvQ8nGByJgpOg@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
I hope you do get in touch with the W station that answered you today and
work him.
For everyone who was following the AO-7 power discussion earlier: the X-200
has a specified gain of 8 dBi, with his specified power output of 5 watts,
that's about 19 watts ERP. That was enough to receive an answer from a
station at least 7,000 km away. That proves the point that you don't need
to crank the power up. Treat the old lady gently and she will reward you
with many great QSOs!
73,
Paul, N8HM
On Fri, Apr 25, 2014 at 5:22 PM, LU2DPW Juan Carlos
<lu2dpw@xxxxx.xxx.xx>wrote:
> Hello to all
>
> In recent AO-7 pass about 20:23 UTC in mode B, I'm calling in CW on 145952
> down and copy an
> W...... station answer me.
>
> Thanks for your answer and please call me next Sunday in Mode B window to
> USA.
>
> I work two US station in CW with distance record in 2008.
>
> My elements are very simple: FT-726R with 10w input(I opined about 5w
> output)
>
> Now my antennas: In tx: Diamond X-200 vertical and in Rx: 5 element Yagui
> home brew for 50Mhz.
>
> In 2008 QSOs I'm using same X-200 in tx and Quad Swiss TET in rx.
>
> 73 de Juan - LU2DPW - GF05gi
> _______________________________________________
> 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: Sat, 26 Apr 2014 01:34:19 +0200
From: "i8cvs" <domenico.i8cvs@xxx.xx>
To: <bstguitarist@xxxxx.xxx>, <APBIDDLE@xxxxxxx.xxx>
Cc: Peter Wilson <protest@xxxxxxxxxxx.xxx>, AMSAT-BB@xxxxx.xxx
Subject: [amsat-bb] Re: AO-07 Distorted audio
Message-ID: <004b01cf60de$e6c1cae0$0301a8c0@xxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
Hi Bryce,
Just to remember for the history:
AO40 uses LEILA wich continuously scanned the Mode-S
passband and superimposed an intermitted sound like a horn
over those uplink signal wich peaks where more than 10 dB
belove the beacon level.
In addition LEILA suppressed several dB and distorted those
uplink signals that do not reduced immediately their EIRP
73" de
i8CVS Domenico
----- Original Message -----
From: "Bryce Salmi" <bstguitarist@xxxxx.xxx>
To: <APBIDDLE@xxxxxxx.xxx>
Cc: "Peter Wilson" <protest@xxxxxxxxxxx.xxx>; <amsat-bb@xxxxx.xxx>
Sent: Friday, April 25, 2014 10:37 PM
Subject: [amsat-bb] Re: AO-07 Distorted audio
> I wonder if it would be possible to build a system that used rssi to limit
> each signal and act accordingly. I think ao40 had something similar.
>
> A digit sat could be sent the tx power and use that in combination with
> rssi to adjust itself too. Just some quick thoughts
>
> Bryce
------------------------------
Message: 9
Date: Sat, 26 Apr 2014 02:47:38 +0000
From: Ethan Waldo <ewaldo@xxxxxxxxxxxx.xxx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] ISEE-3 Reboot Project
Message-ID: <1398480458183.77354@xxxxxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
?This is just a friendly reminder that there are only about 3 1/2 weeks left
to help fund the ISEE-3 Reboot Project http://spacecollege.org/isee3/
http://www.rockethub.com/42228<http://www.rockethub.com/42228.> which is
currently at 32% funding. The orbit change maneuver must be completed by
mid-June.
[http://d1tcpxgmtqbpd1.cloudfront.net/images/42228/1398449925-large.png]<http:
//www.rockethub.com/42228.>
ISEE-3 Reboot Project by Space College, Skycorp, and SpaceRef | RocketHub
ISEE-3/ICE spacecraft will soon fly by the Earth. NASA can't save it. With
your support we will.
Read more...<http://www.rockethub.com/42228.>
------------------------------
Message: 10
Date: Sat, 26 Apr 2014 07:06:12 -0500
From: Stefan Wagener <wageners@xxxxx.xxx>
To: Ethan Waldo <ewaldo@xxxxxxxxxxxx.xxx>
Cc: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: ISEE-3 Reboot Project
Message-ID:
<CAKu8kHBpRgy754OKELw97=mbber6D9zM2O=-_OmOk32OeBOaEw@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Hi Ethan,
Thanks for the reminder. Great project to support.
Stefan, VE4NSA
On Fri, Apr 25, 2014 at 9:47 PM, Ethan Waldo <ewaldo@xxxxxxxxxxxx.xxx>wrote:
> ?This is just a friendly reminder that there are only about 3 1/2 weeks
> left to help fund the ISEE-3 Reboot Project http://spacecollege.org/isee3/
> http://www.rockethub.com/42228<http://www.rockethub.com/42228.> which is
> currently at 32% funding. The orbit change maneuver must be completed by
> mid-June.
>
> [http://d1tcpxgmtqbpd1.cloudfront.net/images/42228/1398449925-large.png]<
> http://www.rockethub.com/42228.>
>
> ISEE-3 Reboot Project by Space College, Skycorp, and SpaceRef | RocketHub
> ISEE-3/ICE spacecraft will soon fly by the Earth. NASA can't save it. With
> your support we will.
> Read more...<http://www.rockethub.com/42228.>
>
>
> _______________________________________________
> 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
>
------------------------------
_______________________________________________
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 9, Issue 150
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