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CX2SA > SATDIG 14.06.13 21:11l 396 Lines 13864 Bytes #999 (0) @ WW
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Subj: AMSAT-BB-digest V8 198
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Sent: 130614/1908Z @:CX2SA.SAL.URY.SA #:7498 [Salto] FBB7.00e $:AMSATBB8198
From: CX2SA@CX2SA.SAL.URY.SA
To : SATDIG@WW
Today's Topics:
1. tnc-2 kiss off (Nick Pugh)
2. Re: tnc-2 kiss off (Walter Holmes)
3. SatPC32 using flip mode at AOS (Greene, Stephan A)
4. Re: Ft-847 & icom preamp (Floyd Rodgers)
5. Re: SatPC32 using flip mode at AOS (Greene, Stephan A)
6. Re: Mystery Spacecraft Identified. (Joe)
7. Mystery Spacecraft (Roland Zurmely)
8. Re: tnc-2 kiss off (Mineo Wakita)
9. Re: SatPC32 using flip mode at AOS (Erich Eichmann)
----------------------------------------------------------------------
Message: 1
Date: Thu, 13 Jun 2013 16:19:43 -0500
From: "Nick Pugh" <quadpugh@xxxxxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] tnc-2 kiss off
Message-ID: <02e001ce687b$b9a49440$2cedbcc0$@xxx>
Content-Type: text/plain; charset="us-ascii"
I have my tnc-2 in kiss mode and want to return it to ax.25. How do I do
this from hyper terminal??
Thanks
nick ARS K5QXJ EM30xa 30.1N 92.1W
Office 337 593 8700
Cell 337 258 2527
Helping UL become a world Class Engineering and Educational School
------------------------------
Message: 2
Date: Thu, 13 Jun 2013 16:30:50 -0500
From: "Walter Holmes" <Walterh@xxxx.xxx>
To: "'Nick Pugh'" <quadpugh@xxxxxxxxx.xxx>, <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: tnc-2 kiss off
Message-ID: <006001ce687d$47b07370$d7115a50$@xxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Send it 3 Control-C commands in a row...
Walter/K5WH
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Nick Pugh
Sent: Thursday, June 13, 2013 4:20 PM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] tnc-2 kiss off
I have my tnc-2 in kiss mode and want to return it to ax.25. How do I do
this from hyper terminal??
Thanks
nick ARS K5QXJ EM30xa 30.1N 92.1W
Office 337 593 8700
Cell 337 258 2527
Helping UL become a world Class Engineering and Educational School
_______________________________________________
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: 3
Date: Thu, 13 Jun 2013 18:24:11 +0000
From: "Greene, Stephan A" <stephan.a.greene@xxxxxxxx.xxx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] SatPC32 using flip mode at AOS
Message-ID:
<905C3C6D2F7CC24386DD63AD6DE8D84177D2E99D@xxxxxxxx.xxxx.xxxxxx.xxxxxxxx>
Content-Type: text/plain; charset="us-ascii"
I am having a problem getting computer-controlled antenna tracking working
in time for Field Day next weekend! System is G5400B az/el rotors, ST-2
trackbox, and SatPC32. Software is communicating with ST2 and rotors. The
ST-2 appears to be properly configured, including the 180 deg elevation
rotor range and the location of the azimuth stops at 180 deg (South).
Manual control of the rotors is normal using the G5400 controller, ST-2
panel buttons, serial port commands to ST-2, and using the SatPC32 manual
interfaces.
SatPC32 sometimes goes into "flip mode" (use max elevation rotor range of
180 deg to avoid loss of tracking from a 180 deg azimuth swing mid-pass for
high elevation passes) immediately at AOS. According to the manual, SatPC32
will not begin tracking a pass in flip mode. I've seen several times now
SatPC32 enter flip mode immediately at AOS for low and mid-elevation passes
where flip is not needed for the 2nd half of the pass. Toggling automated
rotor control (R+/-) off and on during the early part of the pass doesn't
alter the behavior.
I assume I have an incorrect value in the SatPC32 rotor setup (yes, I've
closed and restarted the program). Guess - how does the rotor setup use the
"N" or "S" field to locate the azimuth rotor stops (my rotor has the stops
at 180 deg/South) and does this come into play for flip mode? This doesn't
explain why a flip would be commanded at AOS. I could prevent flip mode by
setting the max rotor elevation to 90 deg, but I'd like to have flip mode
capability when I need it. Suggestions? Can someone email me (no need to
clutter the list) working settings for either ST-2 or LVB Tracker (I think
they are electronically the same)?
I've tried searching the amsat-bb list archive (to the extent it is
searchable - if someone has a way to use, say, Google and the "site:"
command or similar to do this, let me know) and searched the SatPC32 site
and files and haven't found a clear answer.
It just occurred to me that I can use direct serial port commands to the ST2
to test that the azimuth rotor moves CCW from, say, 175 deg to 185 deg,
and does not try to go CW through the rotor stops. Repeating with SatPC32
interface should verify I have the azimuth stops set correctly without
having to wait for a suitable satellite pass. I am hoping this may have
something to do with flip mode being triggered. Or it may just give me
something to try between satellite passes until I figure it!
Thanks & 73
Steve KS1G ks1g@xxxxx.xxx<xxxxxxxxxxx@xxxxx.xxx>
------------------------------
Message: 4
Date: Thu, 13 Jun 2013 13:07:25 -0500
From: Floyd Rodgers <kc5qbc@xxxxxx.xxx>
Cc: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Ft-847 & icom preamp
Message-ID: <51BA0A5D.5040907@xxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
I have used mirage and an older preamp with my 847, but not powered by
the rf ports. I must admit I did smoke the non mirage through complete
absent minded issue. I was trying to play with arecibo on 432 (read
excited) and plugged in the digital stuff to the 1/8" radio port while
all were powered. When one of the rings shorted, radio went to transmit
at full power which killed the preamp. Also be aware 847's have nasty
habit of a very short full power burst at powerup on what ever band you
happen to be on. Not wanting to trust the rf control part of the mirage
preamp, I run direct hard control using the amp control signal port from
the radio.
------------------------------
Message: 5
Date: Fri, 14 Jun 2013 12:55:58 +0000
From: "Greene, Stephan A" <stephan.a.greene@xxxxxxxx.xxx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: SatPC32 using flip mode at AOS
Message-ID:
<905C3C6D2F7CC24386DD63AD6DE8D84177D2EAE8@xxxxxxxx.xxxx.xxxxxx.xxxxxxxx>
Content-Type: text/plain; charset="us-ascii"
Yesterday I wrote:
It just occurred to me that I can use direct serial port commands to the ST2
to test that the azimuth rotor moves CCW from, say, 175 deg to 185 deg,
and does not try to go CW through the rotor stops. Repeating with SatPC32
interface should verify I have the azimuth stops set correctly without
having to wait for a suitable satellite pass. I am hoping this may have
something to do with flip mode being triggered. Or it may just give me
something to try between satellite passes until I figure it out!
I think I figured it out.....and SatPC32 is behaving correctly. SatPC32
will use flip mode at AOS when the azimuth range of a pass goes through the
rotor's South stop (in my case). There were several passes last night that
ranged from around 165-175 degrees azimuth at AOS to 270-350 degrees at
LOS. Flip mode lets SatPC32 use an azimuth range of 345-170 degrees (think
of it as 345-530) to avoid the rotor South stop limit. Restarting SatPC32
once the satellite was at an azimuth above 180 degrees seemed to confirm
this behavior (I need to test again to be sure).
73, Steve KS1G at a.m.s.a.t dot org
------------------------------
Message: 6
Date: Fri, 14 Jun 2013 08:04:27 -0500
From: Joe <nss@xxx.xxx>
To: w3hf@xxxx.xxx
Cc: amsat-bb@xxxxx.xxxx Stephen Melachrinos <melachri@xxxxxxx.xxx>
Subject: [amsat-bb] Re: Mystery Spacecraft Identified.
Message-ID: <51BB14DB.5090608@xxx.xxx>
Content-Type: text/plain; charset=UTF-8; format=flowed
Thanks Steve.
Yes this was a learning thing for me. I knew all about the
Geosynchronous I thought. But i guess my thinking was actually
Geostationary. Even after 30+ years playing with these birds I never
thought of a Geo sync that moved he he he.
Joe WB9SBD
Sig
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com
On 6/13/2013 8:26 PM, Stephen Melachrinos wrote:
> Joe -
>
> You used two different terms here, and there's a distinction that
> helps with the explanation.
>
> A "geosynchronous" satellite is one whose orbital period is one
> sidereal day. This makes its orbit track (on the earth's surface)
> repeat day after day. A "geostationary" satellite is a special case of
> geosynchronous that is truly stationary with respect to the earth.
> This means that not only is its orbital period one sidereal day, but
> its inclination and eccentricity are zero. (This requires regular
> orbit adjustments, typically referred to as north-south stationkeeping
> and east-west stationkeeping.) From your description ("a good amount
> of vertical drift"), Terrestar is geosynchronous but not geostationary.
>
> Unfortunately it's not always obvious which is meant when we describe
> a satellite with the shorthand term "Geo." Furthermore, some
> satellites start out as geostationary and end up becoming simply
> geosynchronous when the owner decides to (or has to) skip the
> stationkeeping maneuvers (e.g., to save fuel).
>
> Steve
> W3HF
> On 06/13/13, Joe<nss@xxx.xxx> wrote:
> <snip> It's a Geosynchronous communications
> satellite.
>
> <snip>And thats where we also got messed up, the Geo bird is more or less
> Stationary in the sky. It has a pretty good amount of vertical drift
> tho. it's orbital period makes it Geo Stationary. but it has a pretty
> high inclination so it drifts up and down in declination some.
------------------------------
Message: 7
Date: Fri, 14 Jun 2013 07:11:37 -0700 (PDT)
From: Roland Zurmely <py4zbz@xxxxx.xxx>
To: AMSAT <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Mystery Spacecraft
Message-ID:
<1371219097.4369.YahooMailNeo@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
About GSO and GEO, please see here:
http://www.qsl.net/py4zbz/satdif.htm
73 de Roland PY4ZBZ
------------------------------
Message: 8
Date: Fri, 14 Jun 2013 23:24:41 +0900
From: "Mineo Wakita" <ei7m-wkt@xxxxxxxxx.xx.xx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: tnc-2 kiss off
Message-ID: <FABA55266E004BB2B7A8570CC551C7AC@xxxxxxxxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-2022-jp";
reply-type=original
Upload the binary file "C0 FF C0" into TNC of state of KISS_mode.
http://www.ne.jp/asahi/hamradio/je9pel/kiss_off.htm
JE9PEL, Mineo Wakita
------------------------------
Message: 9
Date: Fri, 14 Jun 2013 16:45:31 +0200
From: "Erich Eichmann" <erich.eichmann@xxxxxxxx.xx>
To: "Greene, Stephan A" <stephan.a.greene@xxxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: SatPC32 using flip mode at AOS
Message-ID: <61F28172BB0E45DFA7D80B48C6380BE5@xxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Hi Steve,
you are right - with the settings for Flip mode in the menu "Rotor Setup"
(azimuth 360?, elevation 180?) the program checks at the beginning of a
satellite pass whether the satellite "crosses" the end points of your
azimuth rotor (in your case South) in that pass. If so, it runs the pass
from the beginning in Flip mode, that means it turns the azimuth antenna in
the opposite direction and the elevation antenna to 180? - elevation The
color of the control "R" changes from white to yellow.
With the option 450? for azimuth Flip mode doesn't work. This option avoids
also in most cases the 360? turn the rotor has to run when the satellite
crosses the longitude of your location in the North or South.
73s, Erich, DK1TB
----- Original Message -----
From: "Greene, Stephan A" <stephan.a.greene@xxxxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Sent: Friday, June 14, 2013 2:55 PM
Subject: [amsat-bb] Re: SatPC32 using flip mode at AOS
> Yesterday I wrote:
>
> It just occurred to me that I can use direct serial port commands to the
> ST2 to test that the azimuth rotor moves CCW from, say, 175 deg to 185
> deg, and does not try to go CW through the rotor stops. Repeating with
> SatPC32 interface should verify I have the azimuth stops set correctly
> without having to wait for a suitable satellite pass. I am hoping this
> may have something to do with flip mode being triggered. Or it may just
> give me something to try between satellite passes until I figure it out!
>
> I think I figured it out.....and SatPC32 is behaving correctly. SatPC32
> will use flip mode at AOS when the azimuth range of a pass goes through
> the rotor's South stop (in my case). There were several passes last night
> that ranged from around 165-175 degrees azimuth at AOS to 270-350 degrees
> at LOS. Flip mode lets SatPC32 use an azimuth range of 345-170 degrees
> (think of it as 345-530) to avoid the rotor South stop limit. Restarting
> SatPC32 once the satellite was at an azimuth above 180 degrees seemed to
> confirm this behavior (I need to test again to be sure).
>
> 73, Steve KS1G at a.m.s.a.t dot org
> _______________________________________________
> 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 8, Issue 198
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