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CX2SA > SATDIG 23.08.10 22:24l 652 Lines 18940 Bytes #999 (0) @ WW
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To : SATDIG@WW
Today's Topics:
1. Re: AO51 last 2 passes?? (Ted)
2. Re: AO51 last 2 passes?? (Andrew Glasbrenner)
3. Re: AO51 last 2 passes?? (Ted)
4. AO-51 update 22 August 2010 (Mark L. Hammond)
5. Re: AO-51 update 22 August 2010 (Rick - WA4NVM)
6. Doppler corrected frequencies for ISS, AO-27, SO-67, AO-51 &
HO-68? (vtnn43e@xxxxxxx.xxxx
7. Re: Doppler corrected frequencies for ISS, AO-27, SO-67,
AO-51 & HO-68? (Andrew Glasbrenner)
8. Danish-built Amateur Rocket Scheduled For Launch (B J)
9. AO-51 update 23 August 2010, Plan B (Mark L. Hammond)
10. BEESAT (Vincenzo Mone)
11. Re: BEESAT (Mike Rupprecht)
12. MORE POWER !!! EGON ... (John Hackett)
----------------------------------------------------------------------
Message: 1
Date: Sun, 22 Aug 2010 12:01:50 -0700
From: "Ted" <k7trkradio@xxxxxxx.xxx>
Subject: [amsat-bb] Re: AO51 last 2 passes??
To: "'Mark L. Hammond'" <marklhammond@xxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <000e01cb422c$7adf7450$709e5cf0$@xxx>
Content-Type: text/plain; charset="us-ascii"
Thanks Mark
There is a pretty good pass for me at 00:48, so I'll give it another
try....otherwise, I'll make you a good deal on a 440 Moxon turnstile !!!
73, Ted
-----Original Message-----
From: Mark L. Hammond [mailto:marklhammond@xxxxx.xxxx
Sent: Sunday, August 22, 2010 3:17 AM
To: Ted; amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] AO51 last 2 passes??
Hi Ted,
Glad to hear you are trying to work AO-51 and experimenting.
A good place to check for a recent report of most amateur radio satellites
is here:
http://oscar.dcarr.org/
It looks like AO-51 has been operational, so you might review your system
again. Sometimes it's the little things...other times it's something major!
Best luck and 73,
Mark N8MH
At 06:41 PM 8/21/2010 -0700, Ted wrote:
>I'm still learning so forgive the possible dumb question...
>
>I did not hear a peep on the last 2 passes (Sunday 01:30) and the last was
a
>HA pass for the west. Is the bird broken or in eclipse??
>
>Or is the new moxon RX antenna I put up this am a dud ?
>
>Thanks,
>
>Ted
>K7TRK
>
>
>_______________________________________________
>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
Mark L. Hammond [N8MH]
------------------------------
Message: 2
Date: Sun, 22 Aug 2010 16:12:14 -0400
From: Andrew Glasbrenner <glasbrenner@xxxxxxxxxx.xxx>
Subject: [amsat-bb] Re: AO51 last 2 passes??
To: Ted <k7trkradio@xxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxxx "'Mark L. Hammond'" <marklhammond@xxxxx.xxx>
Message-ID: <4C71849E.3080907@xxxxxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Ted wrote:
> Thanks Mark
>
> There is a pretty good pass for me at 00:48, so I'll give it another
> try....otherwise, I'll make you a good deal on a 440 Moxon turnstile !!!
>
> 73, Ted
>
>
>
Just out of curiosity, can you hear AO-27 or any of the other
satellites? What are you using for feedline, and how long?
73, Drew KO4MA
------------------------------
Message: 3
Date: Sun, 22 Aug 2010 14:02:24 -0700
From: "Ted" <k7trkradio@xxxxxxx.xxx>
Subject: [amsat-bb] Re: AO51 last 2 passes??
To: "'Andrew Glasbrenner'" <glasbrenner@xxxxxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <001201cb423d$52b038f0$f810aad0$@xxx>
Content-Type: text/plain; charset="us-ascii"
Drew, I only tried the ao51 passes yesterday, but will try some other sats
this afternoon. The feed line is Beldin 9913 with the solid conductor. Line
is probably a bit less than 50'. Pretty sure that is not an issue as that is
the same coax line that was connected to the antenna that I normally use
(antenna.us Quadrifilar helix) which has 100+ contacts.
I'm just a Moxon fan and thought the moxi might help the rx issue on my TS
2000. I have either screwed up the phasing lines or some other design issue,
as it tests fine on normal fm. It may not be doing the 'circular
polarization' thing. My tx is a moxi I built and it works pretty well.
SO 50 is coming so I'll give that one a try
73, Ted K7TRK CN82
>
>
>
Just out of curiosity, can you hear AO-27 or any of the other
satellites? What are you using for feedline, and how long?
73, Drew KO4MA
------------------------------
Message: 4
Date: Sun, 22 Aug 2010 18:20:36 -0400
From: "Mark L. Hammond" <marklhammond@xxxxx.xxx>
Subject: [amsat-bb] AO-51 update 22 August 2010
To: amsat-bb@xxxxx.xxx
Cc: ao51-modes@xxxxx.xxx
Message-ID: <xaLX1e00356cfur05aLXUi@xxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Hello All,
According to projections, the next 100% illumination period for AO-51 has
begun. Hopefully for the next week or two we can run both transmitters ON
at reasonable power. The PL tone isn't needed (and hasn't been for the last
few weeks).
FM Digital PBBS, U
Uplink: N/A
Downlink: 435.150 Mhz FM
FM Repeater, V/U
Uplink: 145.920 Mhz FM
Downlink: 435.300 Mhz FM
Even though AO-51 "sees sunlight" all the time, it doesn't "see" the sun
equally throughout an orbit. So, we are going to keep the power management
software running in hopes that we can optimize the transmitter power output
and keep the battery temperatures down.
The way it is currently configured, AO-51 can run in one of three states,
depending on available battery power:
1) HIGH 435.300 at 550 mW and 435.150 at 420 mW
2) MEDIUM 435.300 at 420 mW and 435.150 at 300 mW
3) LOW which currently sets both transmitters effectively to OFF
It is very likely that users will see the transmitter power going up and
down some as the battery voltage goes up and down. We hope it's not too
often, and adjustments will be made after collecting some telemetry over the
next few days. Our goal has always been to keep it ON and useable as much
as possible, and we'll do our best to continue that tradition.
Activity reports over the next few weeks to http://oscar.dcarr.org/ (or to
me at n8mh AT amsat.org if Ao-51 appears to be OFF) will be very much
appreciated.
And finally--telemetry files (KISS format preferred) from around the world
will be greatly appreciated for the next few weeks!
On behalf of the AO-51 Command Team,
Mark L. Hammond [N8MH]
------------------------------
Message: 5
Date: Sun, 22 Aug 2010 18:10:51 -0500
From: "Rick - WA4NVM" <wa4nvm@xxxxxxx.xxx>
Subject: [amsat-bb] Re: AO-51 update 22 August 2010
To: <amsat-bb@xxxxx.xxx>, "Mark L. Hammond" <marklhammond@xxxxx.xxx>
Cc: ao51-modes@xxxxx.xxx
Message-ID: <A3E5C8FB867247268AB6BC053A64AB22@xxxxxxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Hi Mark,
So far into the 2310z pass.......... nothing. ??
73,
Rick WA4NVM
> Hello All,
>
> According to projections, the next 100% illumination period for AO-51 has
> begun. Hopefully for the next week or two we can run both transmitters ON
> at reasonable power. The PL tone isn't needed (and hasn't been for the
> last few weeks).
>
> FM Digital PBBS, U
> Uplink: N/A
> Downlink: 435.150 Mhz FM
>
> FM Repeater, V/U
> Uplink: 145.920 Mhz FM
> Downlink: 435.300 Mhz FM
>
>
> Even though AO-51 "sees sunlight" all the time, it doesn't "see" the sun
> equally throughout an orbit. So, we are going to keep the power
> management software running in hopes that we can optimize the transmitter
> power output and keep the battery temperatures down.
>
> The way it is currently configured, AO-51 can run in one of three states,
> depending on available battery power:
> 1) HIGH 435.300 at 550 mW and 435.150 at 420 mW
> 2) MEDIUM 435.300 at 420 mW and 435.150 at 300 mW
> 3) LOW which currently sets both transmitters effectively to OFF
>
>
> It is very likely that users will see the transmitter power going up and
> down some as the battery voltage goes up and down. We hope it's not too
> often, and adjustments will be made after collecting some telemetry over
> the next few days. Our goal has always been to keep it ON and useable as
> much as possible, and we'll do our best to continue that tradition.
>
> Activity reports over the next few weeks to http://oscar.dcarr.org/ (or
> to me at n8mh AT amsat.org if Ao-51 appears to be OFF) will be very
> much appreciated.
>
> And finally--telemetry files (KISS format preferred) from around the world
> will be greatly appreciated for the next few weeks!
>
> On behalf of the AO-51 Command Team,
>
>
>
> Mark L. Hammond [N8MH]
> _______________________________________________
> 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: Sun, 22 Aug 2010 03:13:15 +0000 (UTC)
From: vtnn43e@xxxxxxx.xxx
Subject: [amsat-bb] Doppler corrected frequencies for ISS, AO-27,
SO-67, AO-51 & HO-68?
To: AMSAT <amsat-bb@xxxxx.xxx>
Message-ID:
<1461721453.163808.1282446795690.JavaMail.root@xxxxxxx.xxxxxxxxxx.xx.xxxx.xxxx
xxx.xxx>
Content-Type: text/plain; charset=utf-8
I would like to get started on the FM satellites using my Kenwood TH-G71A
that I now own and an Arrow 146/437- 10W BP antenna that I will purchase in
the very near future.
?
Since I would like to program the frequencies for those satellites in my HT
can anyone tell me what the frequencies should be for the passes on average
including the Doppler correction?
?
For instance what should the up and down frequency be for the AOS, TCA and
TOS of each pass including the Doppler correction?
?
73
Zack
N8FNR
------------------------------
Message: 7
Date: Sun, 22 Aug 2010 20:57:55 -0400
From: Andrew Glasbrenner <glasbrenner@xxxxxxxxxx.xxx>
Subject: [amsat-bb] Re: Doppler corrected frequencies for ISS, AO-27,
SO-67, AO-51 & HO-68?
To: vtnn43e@xxxxxxx.xxx
Cc: AMSAT <amsat-bb@xxxxx.xxx>
Message-ID: <4C71C793.5090107@xxxxxxxxxx.xxx>
Content-Type: text/plain; charset=UTF-8; format=flowed
vtnn43e@xxxxxxx.xxx wrote:
> I would like to get started on the FM satellites using my Kenwood TH-G71A
that I now own and an Arrow 146/437- 10W BP antenna that I will purchase in
the very near future.
>
>
>
>
>
>
>
> Since I would like to program the frequencies for those satellites in my
HT can anyone tell me what the frequencies should be for the passes on
average including the Doppler correction?
>
>
>
>
>
>
>
> For instance what should the up and down frequency be for the AOS, TCA and
TOS of each pass including the Doppler correction?
>
>
Leave the uplink alone, no Doppler necessary there. Downlink should
start 10 khz high, be right on at TCA, and 10 low at LOS. 5 khz steps
are plenty.
73, Drew KO4MA
------------------------------
Message: 8
Date: Sun, 22 Aug 2010 21:20:00 -0700 (PDT)
From: B J <top_gun_canada@xxxxx.xxx>
Subject: [amsat-bb] Danish-built Amateur Rocket Scheduled For Launch
To: amsat-bb@xxxxx.xxx
Message-ID: <68582.27927.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
http://www.metro.co.uk/news/838761-danish-plan-to-launch-space-mission
http://www.copenhagensuborbitals.com/index.php
73s
Bernhard VA6BMJ @ DO33FL
------------------------------
Message: 9
Date: Mon, 23 Aug 2010 06:19:53 -0400
From: "Mark L. Hammond" <marklhammond@xxxxx.xxx>
Subject: [amsat-bb] AO-51 update 23 August 2010, Plan B
To: amsat-bb@xxxxx.xxx
Message-ID: <xmKn1e00156cfur05mKn14@xxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Hello All,
Well, so much for the theoretical :) AO-51 isn't quite out of eclipses
yet. Therefore, continuos operation of the 435.150 digital transmitter will
be postponed a few more days until we get some baseline telemetry data and
figure out how much power is actually available.
You can expect the 435.300 v/u voice repeater to remain ON at reasonable
power, but unexpected shutdowns may occur as we adjust the spacecraft's
power budget during the transition from eclipses to full sunlight. It is
likely that early morning operators over the east coast of the US will find
the bird with only the digital transmitter on at 435.150 for part of the
pass so I can collect telemetry.
Thanks for your patience and for your reports!
73,
Mark L. Hammond [N8MH]
------------------------------
Message: 10
Date: Mon, 23 Aug 2010 14:38:25 +0200
From: "Vincenzo Mone" <vimone@xxxxx.xx>
Subject: [amsat-bb] BEESAT
To: "Amsat - BBs" <amsat-bb@xxxxx.xxx>
Message-ID: <003301cb42c0$14c1f280$3e45d780$@xxxxx.xx>
Content-Type: text/plain; charset="us-ascii"
Hi folks,
i would like to know what do i need to listen the BEESAT bird.
Thanks.
73 de Enzo IK8OZV
EasyLog 5 BetaTester
EasyLog PDA BetaTester
WinBollet BetaTester
D.C.I. CheckPoint Regione Campania
Skype: ik8ozv8520
**********************************
******* GSM +39 338 9749786 *******
****** SMS +39 338 9749786 ******
***** FAX +39 328 7244294 *****
*** 2nd e-mail: vimone@xxx.xx ***
*********************************
------------------------------
Message: 11
Date: Mon, 23 Aug 2010 15:30:39 +0200
From: "Mike Rupprecht" <mail@xxxxxxxxxxxxxx.xx>
Subject: [amsat-bb] Re: BEESAT
To: "'Amsat - BBs'" <amsat-bb@xxxxx.xxx>
Message-ID: <003301cb42c7$60d3f5e0$227be1a0$@xx>
Content-Type: text/plain; charset="iso-8859-1"
Hi Enzo,
BeeSat has two CMX909B modems (CML) onboard. The data formats is MOBITEX,
not AX.25 !
The CMX909B is a half-duplex Gaussian Minimum Shift Keyed (GMSK) BT = 0.3
modem data pump with on-chip packet data handling. GMSK modulation optimizes
the data throughput for a given bandwidth RF channel and the on-chip packet
data handling relieves the host ?C of regular processing tasks, such as
maintaining Bit and Frame Synch, Block Formatting, CRC and FEC Error
Processing, Data Interleaving and Scrambling.
I assume you don't have such a modem.
BEESat is only active on request of the ground station in Berlin. There is
no CW beacon.
73, Mike
DK3WN
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Vincenzo Mone
Sent: Monday, August 23, 2010 2:38 PM
To: Amsat - BBs
Subject: [amsat-bb] BEESAT
Hi folks,
i would like to know what do i need to listen the BEESAT bird.
Thanks.
73 de Enzo IK8OZV
EasyLog 5 BetaTester
EasyLog PDA BetaTester
WinBollet BetaTester
D.C.I. CheckPoint Regione Campania
Skype: ik8ozv8520
**********************************
******* GSM +39 338 9749786 *******
****** SMS +39 338 9749786 ******
***** FAX +39 328 7244294 *****
*** 2nd e-mail: vimone@xxx.xx ***
*********************************
_______________________________________________
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: Mon, 23 Aug 2010 20:55:41 +0200
From: John Hackett <archie.hackett@xxxxxxx.xxx>
Subject: [amsat-bb] MORE POWER !!! EGON ...
To: <eu-amsat-acceptsub-00by4kq2abmiqwuwxgp2caktk5za@xxxxxxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <SNT104-W49379D70FF3D725215999291820@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
To whom it may concern,
A lot of the experienced satellite
operarors will recall Jan King
VK3GEY / W3GEY as the project manager for AO-7, consequently, here probably
isn't a better
authority on the grand old Lady.
A few years ago GM1SXX and myself were in contact with Jan after I'd
discovered and catalogued the operation of the mode timer - and noted the
fact that it wasn't as described in the 1974 Amsat newsletter.
After it's resurrection and for several years thereafter I took an active
interest in this veritable old girl
but eventually moved over to HO-68.
Due to moving into an old people's facility where aerials are not allowed I
had no choice other than to
'bin' the satellite array and disguise a chopped down version as a TV (!)
aerial on a small rotor.
Unfortunately, I was limited to 200mW so as not to interfere with the
digital TV decoders installed in the rooms.
200mW was adequate on HO-68. however, due to the FM mentality promoted by
Amsat, the uplink power
on the other satellites has been increasing ... particularly by the
newcomers - who apparently, and mistakenly, think that high power is
necessary. It's *NOT* ... nor is an EME class aerial array necessary to work
LEO satellites. Ditto circular polarisation.
FACT: polarisation is *ONLY* circular along the boresight of an aerial.
High power is detremental to space bourne transponders - think power budget
- causing among other
things, FM'ing.
For the 'details', please read up on the subject. A positive mine of
information can be found on the AO-7
Resource Page - (which I stopped administering several years ago) - or ask
an experienced operator to explain why! high power is detremental - (power
sharing on a linear transponder or 'hogging' it on FM).
As mentioned, Jan King is probably the foremost authority on AO-7. I'd like
to quote a couple of his comments ...
* Jan King, W3GEY notes that AO-7 had (has?) a very sensitive receiver and
a good uplink antenna.
5 watts EIRP should provide a good downlink. Amplifiers are not required
for the uplink.
* Excessive uplink power may be cause FMing of the transponder and may be
causing the input voltage to the regulator that provides 6D to fluctuate
causing all telemetry to be bad.
Jan also explains - (on the AO-7 resource Page) - how to determine when the
telemetry is valid -
(and when it''s not).
Serious operators take the trouble to read the recommended operating
proceedures.
Finally, a reminder ... (repeated annually).
The Resource Page log was always meant as an ACTIVITY log - not! a
competition. Mistakes that are
not rectified make the statistics, over time, invalid.
One can correct one's own mistakes by clicking on the spyglass to the left
of the log entry ... and follow
the onscreen instructions.
The editing facility has*ALWAYS* been there - (but many people don't use it).
Please do *NOT* make several entries for the same pass unless you work more
than eight (8) stations
on a particular pass.
73 John. <la2qaa@xxxxx.xxx>
------------------------------
_______________________________________________
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 5, Issue 350
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