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CX2SA > SATDIG 03.12.08 00:18l 727 Lines 22996 Bytes #999 (0) @ WW
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To : SATDIG@WW
Today's Topics:
1. Satellite Computer Logging Program Help (Keith N4ZQ)
2. Wanted: UHF Amplifier (K & R Yoksh)
3. Pico transponder (William Leijenaar)
4. Re: getting predict compiled (under osx 10.4) (Paul Williamson)
5. Re: [sarex] Re: ISS SSTV (Louis McFadin)
6. 2.4Ghz up converter (w7lrd@xxxxxxx.xxxx
7. Re: 2.4Ghz up converter (Tim Tuck)
8. Re: Selling "free" software. (Gordon JC Pearce MM3YEQ)
9. ARISS and Echolink (Scott McKee)
10. Re: ARISS and Echolink (Gordon JC Pearce MM3YEQ)
11. SSTV Active (David Barber)
12. Third week as a satellite newbie (Bryan Green)
13. Re: MMIC for LEO preamp? (Curt Nixon)
14. EZ-lindenblad info (francesco messineo)
15. Re: getting predict compiled (under osx 10.4) (laura halliday)
16. Re: MMIC for LEO preamp? (i8cvs)
17. Re: Pico transponder (Bruce Robertson)
----------------------------------------------------------------------
Message: 1
Date: Tue, 2 Dec 2008 01:44:12 GMT
From: "Keith N4ZQ" <n4zq@xxxxxxx.xxx>
Subject: [amsat-bb] Satellite Computer Logging Program Help
To: amsat-bb@xxxxx.xxx
Message-ID: <20081201.204412.8233.0@xxxxxxxxx.xxx.xxxx.xxx>
Content-Type: text/plain; charset=windows-1252
Can anyone recommend a computer logging program that will read BOTH VFO's and
input them into the correct columns of the logging program. My Logger32
program doesn't seem to be able to do that in either Sat Mode or plain old
Split Mode for my Yaesu FT-847. It only reads the main VFO, which is the RX
Frequency in the default Sat Mode.
Hoping to find a logging program that won't require me to edit each and every
Sat QSO after the fact.
Keith N4ZQ
____________________________________________________________
Domain Registration - Click Here
http://thirdpartyoffers.netzero.net/TGL2241/fc/PnY6rx9SmzOpamaGvq4HuWBy4STMHOf
5prFTecYWv6oLdoEY8ZLZD/
------------------------------
Message: 2
Date: Mon, 1 Dec 2008 22:05:45 -0600
From: "K & R Yoksh" <yokshs@xxxxxxxxx.xxx>
Subject: [amsat-bb] Wanted: UHF Amplifier
To: "Amsat BB" <amsat-bb@xxxxx.xxx>
Message-ID: <007801c95433$40a06ad0$6401a8c0@xxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Hello,
I may be in the market for a UHF power amplifier. Please reply off-list to
my email:
k0kn at amsat dot org
with make and model, specs, condition, and particularly price.
My satellite setup now is capable of 5 to 20w output on UHF. I'm thinking
that a
100w amplifier would meet my needs.
Thanks.. 73.
Kyle
K0KN
------------------------------
Message: 3
Date: Tue, 2 Dec 2008 00:52:18 +0100
From: William Leijenaar <pe1rah@xxxxxxx.xxx>
Subject: [amsat-bb] Pico transponder
To: <amsat-bb@xxxxx.xxx>, <pe1rah@xxxxxxx.xxx>
Message-ID: <BAY116-W163B84CEB7C852D2CB85DC90010@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
Hi AMSATs,
Just got one of my latest transponder designs out of the prototype status and
into final status.
I made a small presentation in video format.
I'm new to the video world so I'm sorry for the shacky picture and low
resolution... I'm trying to get that better next time.
Its a small video clip for an even smaller radio...
Enjoy:
http://www.youtube.com/watch?v=JZcaXRFC914
73 de PE1RAH, William Leijenaar
_________________________________________________________________
Express yourself instantly with MSN Messenger! Download today it's FREE!
http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/
------------------------------
Message: 4
Date: Mon, 1 Dec 2008 20:47:54 -0800
From: Paul Williamson <kb5mu@xxxxx.xxx>
Subject: [amsat-bb] Re: getting predict compiled (under osx 10.4)
To: eric.fort@xxxxx.xxx
Cc: AMSAT-BB bb <amsat-bb@xxxxx.xxx>, kd2bd@xxxxx.xxx
Message-ID: <a06230905c55a6a5cf4e9@xxxx.xxx.x.xxx>
Content-Type: text/plain; charset="us-ascii"
At 2:38 PM -0800 12/1/08, Eric Fort wrote:
>... even better have ./install figure out which unix you are compiling for
and get the necessary stuff (bearing in mind the remaining questions below)
It does do that, but not in the usual way. The portability problems are really
almost entirely in the configuration process itself!
I found the easiest thing to do was ignore the installer program. Just do
manually what it does automatically, which is to create a little include file
and then compile the rest of the program.
The little include file is named "predict.h" and it contains three
definitions, like this:
char *predictpath="/foo/", soundcard=1, *version="2.2.2x";
You'd replace "/foo/" with the path where you want to install Predict. You'd
use the version string that matches the version of source code you're
compiling, possibly with an "x" or something added to signify that you've
messed with it. The variable soundcard=1 is what makes it shut up about not
having a soundcard.
Then just compile with something like
cc -lncurses -O3 predict.c -o predict
Back in 2003 I wrote the following; I don't know offhand if it still applies
on OS X:
At 3:25 PM -0700 7/13/03, Paul Williamson wrote:
>The only other interesting gotcha is that ftime() is used but doesn't exist
in OS X's
>standard tools. You can work around this as follows:
>
>ftime() has been replaced by gettimeofday(). The following function replaces
>the existing CurrentDaynum() function in the predict.c with one that uses
>gettimeofday():
>
>double CurrentDaynum()
>{
> /* Read the system clock and return the number
> of days since 31Dec79 00:00:00 UTC (daynum 0) */
>
> //struct timeb tptr;
> //int x;
>
> // x=ftime(&tptr);
>
> //return ((((double)tptr.time+0.001*(double)tptr.millitm)/86400.0)-
3651.0);
>
> struct timeval tv;
> struct timezone tz;
>
> // gettimeofday() is referenced to Jan 1, 1970; 3651 converts to the
reference above.
> if (gettimeofday(&tv, &tz) != 0)
> return 8000.0; // how should we handle errors?
>
> return ((((double)tv.tv_sec + 0.000001*(double)tv.tv_usec)/86400.0)-
3651.0);
>
>}
>How do I get it to use the verson of vocalizer for the mac referenced above?
Just put the vocalizer program into the vocalizer subdirectory of the
installation directory, which must match the value of predictpath from
predict.h.
>Is there a means to easily call another external program instead of vocalizer
when an event happens?
Vocalizer IS an external program. You can substitute any program you like, as
long as it's named vocalizer/vocalizer. It takes simple command-line
arguments.
73 -Paul
kb5mu@xxxxx.xxx
------------------------------
Message: 5
Date: Tue, 02 Dec 2008 00:05:49 -0500
From: Louis McFadin <w5did@xxx.xxx>
Subject: [amsat-bb] Re: [sarex] Re: ISS SSTV
To: Andrew Glasbrenner <glasbrenner@xxxxxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxxx sarex@xxxxx.xxx
Message-ID: <9B88C07D-3783-484E-AAD9-BBDC721AA979@xxx.xxx>
Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes
We have to be careful with our demands on the crew for any pictures of
the inside. NASA has a standing order to review any internal photos
through the official channels. SSTV doesn't allow that. If a crewman
takes a picture of himself that's one thing. Pictures of others is
another.
I think this will be worked out over time to be somewhat more liberal
but for now it's best to let them work it out on an individual basis.
Let's enjoy what we are getting.
On Dec 1, 2008, at 2:11 PM, Andrew Glasbrenner wrote:
> They just might be busy with something else! Let's not look a gift
> horse in
> the mouth, the other option might be for them to just turn it off.
>
> 73, Drew KO4MA
>
> ----- Original Message -----
> From: "David Barber" <david.barber@xxxxxxxxxxxxx.xx.xx>
> To: <amsat-bb@xxxxx.xxx>; <sarex@xxxxx.xxx>
> Sent: Monday, December 01, 2008 2:05 PM
> Subject: [amsat-bb] ISS SSTV
>
>
>> Could someone ask the guy's up there to turn the camera round for
>> some
>> internal shots when over Europe in the dark please?
>>
>> Thanks.
>>
>> David
>> G8OQW
>>
>> _______________________________________________
>> 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 sarex@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT member? Join now to support the amateur satellite
> program!
> Subscription settings: http://amsat.org/mailman/listinfo/sarex
Lou McFadin
W5DID
w5did@xxx.xxx
------------------------------
Message: 6
Date: Tue, 02 Dec 2008 05:57:17 +0000
From: w7lrd@xxxxxxx.xxx
Subject: [amsat-bb] 2.4Ghz up converter
To: AMSAT-BB@xxxxx.xxx (AMSAT-BB)
Message-ID:
<120220080557.4465.4934CE3D0003D2060000117122120207840B9D04C999@xxxxxxx.
xxx>
Content-Type: text/plain
Hello
I am looking for an up-converter to 2.4Ghz from 2 meters preferably. I only
need less than one watt for testing purposes. Should anyone have one they
would care to part with or a recommended one, please let me know. Any
information or recommendations are appreciated. I will be adjusting antennas
with a Bird 43 meter and a 250Mw slug. As always thankyou in advance.
--
73 Bob W7LRD
AMSAT member 28498
Seattle
(AO-7 regular)
------------------------------
Message: 7
Date: Tue, 02 Dec 2008 18:20:59 +1100
From: "Tim Tuck" <timt@xxxxxxx.xxx>
Subject: [amsat-bb] Re: 2.4Ghz up converter
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Message-ID: <4934E1DB.2060403@xxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
w7lrd@xxxxxxx.xxx wrote:
> Hello
> I am looking for an up-converter to 2.4Ghz from 2 meters preferably. I only
need less than one watt for testing purposes. Should anyone have one they
would care to part with or a recommended one, please let me know. Any
information or recommendations are appreciated. I will be adjusting antennas
with a Bird 43 meter and a 250Mw slug. As always thankyou in advance.
>
>
Hi Bob,
Given the exchange rate between our two countries you might like to look
at VK5EME's wonderful kits at URL...
http://www.minikits.com.au/
regards
Tim
--
VK2XTT :: QF56if :: BMARC :: WIA :: AMSAT-VK :: AMSAT
------------------------------
Message: 8
Date: Tue, 02 Dec 2008 10:17:44 +0000
From: Gordon JC Pearce MM3YEQ <gordonjcp@xxxx.xxx>
Subject: [amsat-bb] Re: Selling "free" software.
To: AMSAT-BB <amsat-bb@xxxxx.xxx>
Message-ID: <49350B48.203@xxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Nigel Gunn G8IFF/W8IFF wrote:
> I see that Apex Software is selling, amongst other things, GPREDICT on e-
bay.
> Does this conflict with anyone's GPL license?
You're perfectly entitled to sell GPLed software. If they have made any
local modifications, they must publish their changes.
You can modify GPLed code as much as you like without publishing your
changes, as long as you don't distribute the modified code either.
Gordon
------------------------------
Message: 9
Date: Mon, 1 Dec 2008 23:58:16 -0800 (PST)
From: Scott McKee <sbmckee@xxxxx.xxx>
Subject: [amsat-bb] ARISS and Echolink
To: amsat-bb@xxxxx.xxx
Message-ID: <352836.63344.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
We have a scheduled ARISS school for next Tuesday, 09 December and would like
to do an Echolink feed.?
?
I would appreciate any comments from those that have done so for this event.?
My concern in feeding the audio from a professional mixer into the PC line
input.? Any special experiences or suggestions would be great.
?
73,
Scott, NT5SM
Trustee: Austin Elementary Radio Club - K5AUS
?
------------------------------
Message: 10
Date: Tue, 02 Dec 2008 13:40:04 +0000
From: Gordon JC Pearce MM3YEQ <gordonjcp@xxxx.xxx>
Subject: [amsat-bb] Re: ARISS and Echolink
To: AMSAT-BB <amsat-bb@xxxxx.xxx>
Message-ID: <49353AB4.7030502@xxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Scott McKee wrote:
> We have a scheduled ARISS school for next Tuesday, 09 December and would
like to do an Echolink feed.
>
> I would appreciate any comments from those that have done so for this event.
My concern in feeding the audio from a professional mixer into the PC line
input. Any special experiences or suggestions would be great.
>
Most mixers should provide a decent enough level to drive a PC sound
card line input. Ideally you're looking for something like a tape
output - many desks have this for dropping mixes to two-track, and
they're often labelled as such.
Gordon
------------------------------
Message: 11
Date: Tue, 2 Dec 2008 14:39:52 -0000
From: "David Barber" <david.barber@xxxxxxxxxxxxx.xx.xx>
Subject: [amsat-bb] SSTV Active
To: <amsat-bb@xxxxx.xxx>, <sarex@xxxxx.xxx>
Message-ID: <DC7D470F65D84B43B890029613C328E6@xxxxxxxx>
Content-Type: text/plain; charset="us-ascii"
SSTV active during 14.30utc European pass.
Looks as if batteries on VC-H1 may be discharged. No picture just blue
background and NA1SS callsign.
David
G8OQW
------------------------------
Message: 12
Date: Tue, 02 Dec 2008 06:40:00 -0800
From: Bryan Green <bag@xxx.xxx>
Subject: [amsat-bb] Third week as a satellite newbie
To: AMSAT-BB <amsat-bb@xxxxx.xxx>
Message-ID: <E47FC0A7-9F70-4D6D-8262-3037373900BF@xxx.xxx>
Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes
Greetings, all:
Bryan KL7CN/W6 here in CM98fn.
Two weeks ago, I posted here my first week's experience as a satellite
newbie.
After three weeks, it's still fun. I know this because it's 6:00 in
the morning in California, and I just came back inside after standing
out on the sidewalk in the bitter 40-degree cold -- and yes, I can
hear the chuckles from the Midwest but that's very cold for here.
I was out there the foggy dark dregs of night talking into my now-
beloved IC-W32A VHF/UHF handheld radio and even more beloved tripod-
mounted Arrow antenna. I met with WB9YIG, K8CXM, my co-conspirator
WA4NVM, and WB9L for an early-morning club -- the FM satellite
enthusiast's club! I scribbled down their callsigns and the callsigns
of the others I heard into my little Moleskine notebook, all by the
light of my cell phone -- an ironic choice of illumination. I waved at
the couple of early-morning commuters who drove by with wide eyes and
dropped jaws. They must think I am as crazy as the fellow down the
street who shovels dirt around his grassless yard. What else could
explain a grown man pointing a TV-antenna-looking-thing at at the sky
while listening intently into a pair of iPod headphones attached to
it, and all while carefully taking notes and occasionally talking into
a microphone -- in the middle of the night?
I suppose the craziness of it appeals to me most. It's the frontier!
It used to be unusual to have conversations with people from other
countries; now it's common -- the Internet changed that. And it used
to be unusual to carry around a small radio for the purpose of
communicating with your friends; now it's also common -- cell phones
changed that. And, as well, it used to be unusual to send short
computer-based messages by wireless to your posse; now it's popular
with young people the world over -- texting changed that. But talking
to your friends using low-earth-orbiting satellites tracked by hand --
who does that? Crazy people, that's who: amateur radio operators!
-- bag
------------------------------
Message: 13
Date: Tue, 02 Dec 2008 09:44:31 -0500
From: Curt Nixon <cptcurt@xxxxx.xxx>
Subject: [amsat-bb] Re: MMIC for LEO preamp?
To: i8cvs <domenico.i8cvs@xxx.xx>
Cc: AMSAT-BB <amsat-bb@xxxxx.xxx>
Message-ID: <493549CF.10109@xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Good Morning Domenico:
In step 7 you wrote:
7)Without moving the audio and RF setting of the receiver start to play
tuning and adjusting everything is possible in your preamplifier i.e.
capacitors and inductances of the input network as well potentiometers
to set the active device current until switching the noise source ON and
OFF the maximum variation on the AC voltmeter is reached and this
condition correspond to the lovest possible Noise Figure obtainable
Looking for MAXIMUM variation in noise...is this correct or should it be
looking for MINIMUM variation??
Than ks..I'll give it a try.
Curt
KU8L
------------------------------
Message: 14
Date: Tue, 2 Dec 2008 17:34:42 +0100
From: "francesco messineo" <francesco.messineo@xxxxx.xxx>
Subject: [amsat-bb] EZ-lindenblad info
To: "AMSAT BB" <amsat-bb@xxxxx.xxx>
Message-ID:
<d9f2bc20812020834r4c1114a5ue5a1a2993ddcbb49@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Hello all,
I have read with great interest the AA2TX article about an easy way to
build the lindenblad antenna for 2m satellite band. I have some
questions for the ones who actually use these antennas.
I'm thinking about a portable setup for a three weeks operation in IS0
at the end of december. How does the antenna perform on LEOs? I've
always used small yagis handeld with great results, but this setup is
quite unsatisfactory for winter operations. How problematic is the
fixed circular polarization of the lindenblad? And finally... does
anyone have tested dimensions for a 70 cm easy-lindenblad design? I'm
particularly interested in cw operations on AO-7 by the way.
Thanks in advance and best 73
Francesco IZ8DWF
------------------------------
Message: 15
Date: Tue, 2 Dec 2008 08:56:32 -0800
From: laura halliday <marsgal42@xxxxxxx.xxx>
Subject: [amsat-bb] Re: getting predict compiled (under osx 10.4)
To: <amsat-bb@xxxxx.xxx>
Message-ID: <BAY119-W13C726FD74AE1646D0E662AE000@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
FWIW, I compiled predict last night under Leopard (OSX 10.5)
on my vanilla Core 2 iMac without difficulty. I have the usual
developer stuff that comes with the OS, plus the iPhone SDK
and all the goodies that go with it.
I deleted the include of sys/soundcard.h in installer.c, which
produced a message about it being a bummer that I didn't
have a sound card. Everything else worked, and it ran and
generated predictions without comment. No issues with
ftime(), no need to specify any additional libraries. I didn't
try any of the support utilities.
The GNU-ish way to make programs and their compilation
portable is automake and autoconf.
Laura Halliday VE7LDH "Que les nuages soient notre
Grid: CN89mg pied a terre..."
ICBM: 49 16.05 N 122 56.92 W - Hospital/Shafte
_________________________________________________________________
------------------------------
Message: 16
Date: Tue, 2 Dec 2008 18:11:30 +0100
From: "i8cvs" <domenico.i8cvs@xxx.xx>
Subject: [amsat-bb] Re: MMIC for LEO preamp?
To: "Curt Nixon" <cptcurt@xxxxx.xxx>
Cc: AMSAT-BB <amsat-bb@xxxxx.xxx>
Message-ID: <002601c954a1$055823a0$0201a8c0@xxx.xx>
Content-Type: text/plain; charset="iso-8859-1"
----- Original Message -----
From: "Curt Nixon" <cptcurt@xxxxx.xxx>
To: "i8cvs" <domenico.i8cvs@xxx.xx>
Cc: "AMSAT-BB" <amsat-bb@xxxxx.xxx>
Sent: Tuesday, December 02, 2008 3:44 PM
Subject: Re: [amsat-bb] Re: MMIC for LEO preamp?
> Good Morning Domenico:
>
> In step 7 you wrote:
>
> 7)Without moving the audio and RF setting of the receiver start to play
> tuning and adjusting everything is possible in your preamplifier i.e.
> capacitors and inductances of the input network as well potentiometers
> to set the active device current until switching the noise source ON
and
> OFF the maximum variation on the AC voltmeter is reached and this
> condition correspond to the lovest possible Noise Figure obtainable
>
> Looking for MAXIMUM variation in noise...is this correct or should it be
looking for MINIMUM variation??
>
> Than ks..I'll give it a try.
>
> Curt
> KU8L
>
Hi Curt, KU8L
Switching the noise source from OFF to ON you must look for the
MAXIMUM variation in noise levels on the AC voltmeter.
During the above test the current flowing in the diode must be keep constant
so that as soon you get a comfortable reading possibly near full scale on
the AC volmeter with the source switched ON do not change the setting of the
potentiometer of the noise source described in the following Fig-8
http://users.tpg.com.au/users/ldbutler/AmpNoise.htm
When the source is OFF the white noise generated by the 50 ohm resistor
is at room temperature of 290? kelvin and when the source is ON the white
noise generate by the diode and sent to the 50 ohm resistor is greater i.e.
it is like to keep the resistor at a higher temperature
Tuning the preamplifier for the lovest NF and switching the noise source
from OFF to ON if you reach a difference from say 2 volt to 5 volt it is
much better than if you get only a difference from say 2 to 4 volt because
switching the noise source for the same ON/OFF noise levels you get a
greater S/N ratio in the AC voltmeter corresponding to a lover NF of
your preamplifier.
Please let me know the result of your testing
73" de
i8CVS Domenico
------------------------------
Message: 17
Date: Tue, 2 Dec 2008 14:36:50 -0400
From: "Bruce Robertson" <ve9qrp@xxxxx.xxx>
Subject: [amsat-bb] Re: Pico transponder
To: "William Leijenaar" <pe1rah@xxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID:
<49657a760812021036j2a93e7d6t243e6465107b8471@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
William --
This appears to be a linear transponder on a 10cm x 10cm board. If
this is true, hats off (again) to you!
Do you plan to make this available to any cubesat project that needs
the hardware, or does it have a specific project in mind?
Somehow, I think this should be cross-posted to the bbSat discussion :-)
73,
Bruce
VE9QRP
On Mon, Dec 1, 2008 at 7:52 PM, William Leijenaar <pe1rah@xxxxxxx.xxx> wrote:
>
> Hi AMSATs,
>
> Just got one of my latest transponder designs out of the prototype status
and into final status.
> I made a small presentation in video format.
> I'm new to the video world so I'm sorry for the shacky picture and low
resolution... I'm trying to get that better next time.
>
> Its a small video clip for an even smaller radio...
>
> Enjoy:
> http://www.youtube.com/watch?v=JZcaXRFC914
>
> 73 de PE1RAH, William Leijenaar
>
>
> _________________________________________________________________
> Express yourself instantly with MSN Messenger! Download today it's FREE!
> http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/
> _______________________________________________
> 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 3, Issue 627
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