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CX2SA > SATDIG 29.02.08 19:00l 982 Lines 30661 Bytes #999 (0) @ WW
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To : SATDIG@WW
Today's Topics:
1. Re: Todays passes (Fred (VE3FAL))
2. Re: Newbie Here AO-51 Questions. (Gould Smith)
3. Re: Newbie Here AO-51 Questions. (Clint Bradford)
4. Re: Newbie Here AO-51 Questions. (Kent R. Frazier)
5. SDR for satellites (pcalvi(AT)bluewin.ch)
6. Configuring LUSAT-19 like AO-16??? (John Marranca, Jr)
7. Re: SDR for satellites (Jim Jerzycke)
8. Re: SDR for satellites (Tony VK5ZAI)
9. Re: SDR for satellites (Stefan Wagener)
10. Re: SDR for satellites (Alan P. Biddle)
11. Re: Newbie Here AO-51 Questions. (Auke de Jong, VE6PWN)
12. Re: Newbie Here AO-51 Questions. (Greg D.)
13. Re: Newbie Here AO-51 Questions. (John Heaton)
14. Re: Newbie Here AO-51 Questions. (GW1FKY(AT)aol.com)
15. FO-29 schedule Mar.2008 (Mineo Wakita)
16. Re: LVB Tracker Questions (Sion Chow Q. C. (9W2QC))
----------------------------------------------------------------------
Message: 1
Date: Thu, 28 Feb 2008 15:10:57 -0500
From: "Fred \(VE3FAL\)" <flesnick(AT)tbaytel.net>
Subject: [amsat-bb] Re: Todays passes
To: "'Ransom, Kenneth G. \(JSC-OC\)[BAR]'"
<kenneth.g.ransom(AT)nasa.gov>, <amsat-bb(AT)amsat.org>
Message-ID: <011101c87a46$07bdd580$6400a8c0(AT)flesnick>
Content-Type: text/plain; charset="us-ascii"
Yea PCSat was very weak at it's first pass this morning, so that is probably
the reason why.
Thanks
To all.
Fred
VE3FAL
-----Original Message-----
From: Ransom, Kenneth G. (JSC-OC)[BAR] [mailto:kenneth.g.ransom(AT)nasa.gov]
Sent: February 28, 2008 2:40 PM
To: Fred (VE3FAL); amsat-bb(AT)amsat.org
Subject: RE: [amsat-bb] Todays passes
Nothing wrong with your gear. http://www.ariss.net/ shows no activity
for several hours for ISS. PCSAT is back into eclipse so unless it has
been in the sun for a good portion of the orbit before getting to your
location, it will be quiet as well.
Kenneth - N5VHO
-----Original Message-----
From: amsat-bb-bounces(AT)amsat.org [mailto:amsat-bb-bounces(AT)amsat.org] On
Behalf Of Fred (VE3FAL)
Sent: Thursday, February 28, 2008 12:26 PM
To: amsat-bb(AT)amsat.org
Subject: [amsat-bb] Todays passes
Weird stuff today, I even checked my antenna to make sure it was up ,
frequency correct, but not nearing either PCSat or ISS today and last 2
passes were directly overhead.
Fred
VE3FAL
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------------------------------
Message: 2
Date: Thu, 28 Feb 2008 15:31:30 -0500
From: "Gould Smith" <gouldsmi(AT)bellsouth.net>
Subject: [amsat-bb] Re: Newbie Here AO-51 Questions.
To: "Kent R. Frazier" <badfrog88(AT)gmail.com>, <amsat-bb(AT)amsat.org>
Message-ID: <B9324531E02E48E4AB259E3D9C91952D(AT)GouldMainPC>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Hello Kent,
Welcome to the satellites.
AO-51 was in L/US mode for the last couple of days.
Please check the schedule for AO-51 at
http://www.amsat.org/amsat-new/echo/CTNews.php
There is a link on the front page of the AMSAT site (top right) under Quick
Access to Project Pages for AO-51. This takes you to the main AO-51 page.
Select the link under the latest news to get there. There is a grid and and
a text page, we are in the process of changing the link to the text page
rather than the grid page. The grid doesn't support the current dual
downlink mode.
The transmit power for AO-51 will increase on Friday to 1W so it will be
easier to hear tomorrow (UTC).
73,
Gould, WA4SXM
AO-51 Ops Team
----- Original Message -----
From: "Kent R. Frazier" <badfrog88(AT)gmail.com>
To: <amsat-bb(AT)amsat.org>
Sent: Thursday, February 28, 2008 12:39 PM
Subject: [amsat-bb] Newbie Here AO-51 Questions.
> Hello all, my name is Kent Frazier, K5KNT. I am just getting interested in
> working amateur satellites. I just joined AMSAT on Tuesday, 26 February
> 2008. My current hardware is an Icom IC2720 dual band in my personal
> vehicle
> with a Comet C767 dual band antenna. I also have an Icom IC-T22A 2-meter
> hand held with a Diamond RH77CA antenna.
>
> I've been trying to listen to passes of AO-51 over the last week.
> Unfortunately, I haven't been able to hear anything since Monday, 25
> February at approx 01:04 UTC (Saturday 24 FEB 19:04 CST). At that time, I
> thought I heard the call W9CPV.
>
> I'm currently using Satscape as my tracking software. My Gridsquare
> location
> is DM91sk.
>
> Are there other satellites I could monitor with the above equipment? Any
> suggestions for making my first contact?
>
> 73,
>
> Kent R. Frazier, K5KNT
>
> --
> This electronic message transmission contains information which may be
> Confidential and/or Privileged. The information is intended to be for the
> use of the individual or entity named above. Any unauthorized disclosure,
> copying, distribution or use of the contents of this information, is
> prohibited. If you are not the intended recipient, please destroy all
> copies
> of the original message.
> _______________________________________________
> Sent via AMSAT-BB(AT)amsat.org. 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, 28 Feb 2008 13:29:00 -0800
From: Clint Bradford <clintbrad4d(AT)earthlink.net>
Subject: [amsat-bb] Re: Newbie Here AO-51 Questions.
To: amsat-bb(AT)amsat.org
Message-ID: <A02B3116-0090-4B33-9E22-FB0416C0FCFC(AT)earthlink.net>
Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed
WELCOME, Kent, to this wonderful aspect of amateur radio!
Because you did hear something earlier this week, tha means you're
close to perfecting your setup.
Check the ideas on my tutorial at...
http://homepage.mac.com/clintbradford/Menu3.html
...and see if any of that helps.
Clint Bradford, K6LCS / KAF3359
909-241-7666
------------------------------
Message: 4
Date: Thu, 28 Feb 2008 15:46:42 -0600
From: "Kent R. Frazier" <badfrog88(AT)gmail.com>
Subject: [amsat-bb] Re: Newbie Here AO-51 Questions.
To: "Gould Smith" <gouldsmi(AT)bellsouth.net>
Cc: amsat-bb(AT)amsat.org
Message-ID:
<7caa889a0802281346i424c0c74le2db26de75924002(AT)mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
Thanks to all for the warm welcome and links to references. I'm downloading
and printing them now.
What is L/US mode?
73,
Kent, K5KNT
On Thu, Feb 28, 2008 at 2:31 PM, Gould Smith <gouldsmi(AT)bellsouth.net>
wrote:
> Hello Kent,
>
> Welcome to the satellites.
>
> AO-51 was in L/US mode for the last couple of days.
> Please check the schedule for AO-51 at
> http://www.amsat.org/amsat-new/echo/CTNews.php
>
> There is a link on the front page of the AMSAT site (top right) under
> Quick
> Access to Project Pages for AO-51. This takes you to the main AO-51
> page.
> Select the link under the latest news to get there. There is a grid and
> and
> a text page, we are in the process of changing the link to the text page
> rather than the grid page. The grid doesn't support the current dual
> downlink mode.
>
> The transmit power for AO-51 will increase on Friday to 1W so it will be
> easier to hear tomorrow (UTC).
>
> 73,
> Gould, WA4SXM
> AO-51 Ops Team
>
--
This electronic message transmission contains information which may be
Confidential and/or Privileged. The information is intended to be for the
use of the individual or entity named above. Any unauthorized disclosure,
copying, distribution or use of the contents of this information, is
prohibited. If you are not the intended recipient, please destroy all copies
of the original message.
------------------------------
Message: 5
Date: Thu, 28 Feb 2008 21:58:54 +0000 (GMT)
From: "pcalvi(AT)bluewin.ch" <pcalvi(AT)bluewin.ch>
Subject: [amsat-bb] SDR for satellites
To: amsat-bb(AT)amsat.org
Message-ID:
<31552962.161851204235934271.JavaMail.webmail(AT)ps14zhh.bluewin.ch>
Content-Type: text/plain;charset="UTF-8"
Hello everybody.
I was wondering if anybody has experimented with the FLEXI RADIO Software
Defined Radios on satellites. I know the
SDR 5000 can do dual receive, but can cross-band full duplex be done as well?
Grateful for any wisdom.
73 Piero MM0TWX/HB9DSU
________________________
Piero Calvi-Parisetti MM0TWX
currently also HB9DSU
for music, Ham Radio and more
visit http://www.qsl.net/hb9dsu
------------------------------
Message: 6
Date: Thu, 28 Feb 2008 17:20:07 -0500
From: "John Marranca, Jr" <KB2HSH(AT)amsat.org>
Subject: [amsat-bb] Configuring LUSAT-19 like AO-16???
To: amsat-bb(AT)amsat.org
Message-ID:
<8edcdb130802281420y10ef567djdb8f9f9fb7a8a466(AT)mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
Good Afternoon, Everyone.
Last month, a question was posed about the possibility of reconfiguring
LUSAT/Oscar 19 in the "bent pipe" style that AO-16 is currently in. As I am
writing this, both AO-16 and LU-19 are overhead...and both have stellar
signals.
Is there any news/update as to whether or not this can be accomplished??
Upon reading the Satellite Handbook, it appears as though 16, 17, 18, and 19
were pretty much similar. If I am wrong, then I will stand as corrected,
but if 16 could be converted in such a fashion, what prevents 19?
Wishing for Spring!
John KB2HSH
--
_______________________________
John Marranca, Jr
PBX Technician/Shop Steward CWA Local 1122
BN Systems, Inc
Orchard Park, NY
(716)972-2006
------------------------------
Message: 7
Date: Thu, 28 Feb 2008 14:24:24 -0800 (PST)
From: Jim Jerzycke <kq6ea(AT)pacbell.net>
Subject: [amsat-bb] Re: SDR for satellites
To: pcalvi(AT)bluewin.ch, amsat-bb(AT)amsat.org
Message-ID: <259590.66273.qm(AT)web80605.mail.mud.yahoo.com>
Content-Type: text/plain; charset=iso-8859-1
It should be trivial to do if you have the
transverters. The Flex5000 is capable of full duplex
"Out Of The Box", and the PowerSDR software has
provisions for use with more than one transverter.
Jim KQ6EA
--- "pcalvi(AT)bluewin.ch" <pcalvi(AT)bluewin.ch> wrote:
>
> Hello everybody.
>
> I was wondering if anybody has experimented with the
> FLEXI RADIO Software Defined Radios on satellites. I
> know the
> SDR 5000 can do dual receive, but can cross-band
> full duplex be done as well?
>
> Grateful for any wisdom.
>
> 73 Piero MM0TWX/HB9DSU
> ________________________
> Piero Calvi-Parisetti MM0TWX
> currently also HB9DSU
> for music, Ham Radio and more
> visit http://www.qsl.net/hb9dsu
> _______________________________________________
> Sent via AMSAT-BB(AT)amsat.org. 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: Thu, 28 Feb 2008 22:32:40 +0000
From: Tony VK5ZAI <hutch(AT)electric-web.org>
Subject: [amsat-bb] Re: SDR for satellites
To: pcalvi(AT)bluewin.ch
Cc: amsat-bb(AT)amsat.org
Message-ID: <47C73688.4010709(AT)electric-web.org>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Hello Piero,
Robin, VE3FRH has two Flex radios and is most impressed with them. He
did an audio -visual presentation at our Club in Australia a few weeks
ago and is convinced this is the way of the future. After hearing him
speak on this I was quite impressed this their capabilities.
Regards Tony. VK5ZAI
J.A.(Tony)Hutchison
P.O.Box 470 Kingston SE
South Australia 5275
National ARISS Co-ordinator
and Satellite ground Station.
Web Site :-
http://www.electric-web.org
pcalvi(AT)bluewin.ch wrote:
> Hello everybody.
>
> I was wondering if anybody has experimented with the FLEXI RADIO Software
Defined Radios on satellites. I know the
> SDR 5000 can do dual receive, but can cross-band full duplex be done as
well?
>
> Grateful for any wisdom.
>
> 73 Piero MM0TWX/HB9DSU
> ________________________
> Piero Calvi-Parisetti MM0TWX
> currently also HB9DSU
> for music, Ham Radio and more
> visit http://www.qsl.net/hb9dsu
> _______________________________________________
> Sent via AMSAT-BB(AT)amsat.org. 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: 9
Date: Thu, 28 Feb 2008 17:04:31 -0600
From: "Stefan Wagener" <stefan_wagener(AT)hotmail.com>
Subject: [amsat-bb] Re: SDR for satellites
To: <hutch(AT)electric-web.org>, <pcalvi(AT)bluewin.ch>
Cc: amsat-bb(AT)amsat.org
Message-ID: <BAY130-DAV10E0A38FBAF8285F31D657F61B0(AT)phx.gbl>
Content-Type: text/plain; charset="us-ascii"
They are indeed very nice radios!
However, they are not working on VHF or UHF. The only option is to use a
transverter which is kind of funny since the whole idea was to get away from
"hardware" and do it in "software". I really hope Flex would design a VHF,
UHF SDR for satellite operation. That would be a fantastic.
Stefan VE4NSA
-----Original Message-----
From: amsat-bb-bounces(AT)amsat.org [mailto:amsat-bb-bounces(AT)amsat.org] On
Behalf Of Tony VK5ZAI
Sent: February-28-08 4:33 PM
To: pcalvi(AT)bluewin.ch
Cc: amsat-bb(AT)amsat.org
Subject: [amsat-bb] Re: SDR for satellites
Hello Piero,
Robin, VE3FRH has two Flex radios and is most impressed with them. He
did an audio -visual presentation at our Club in Australia a few weeks
ago and is convinced this is the way of the future. After hearing him
speak on this I was quite impressed this their capabilities.
Regards Tony. VK5ZAI
J.A.(Tony)Hutchison
P.O.Box 470 Kingston SE
South Australia 5275
National ARISS Co-ordinator
and Satellite ground Station.
Web Site :-
http://www.electric-web.org
pcalvi(AT)bluewin.ch wrote:
> Hello everybody.
>
> I was wondering if anybody has experimented with the FLEXI RADIO Software
Defined Radios on satellites. I know the
> SDR 5000 can do dual receive, but can cross-band full duplex be done as
well?
>
> Grateful for any wisdom.
>
> 73 Piero MM0TWX/HB9DSU
> ________________________
> Piero Calvi-Parisetti MM0TWX
> currently also HB9DSU
> for music, Ham Radio and more
> visit http://www.qsl.net/hb9dsu
> _______________________________________________
> Sent via AMSAT-BB(AT)amsat.org. 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(AT)amsat.org. 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: 10
Date: Thu, 28 Feb 2008 17:10:37 -0600
From: "Alan P. Biddle" <APBIDDLE(AT)UNITED.NET>
Subject: [amsat-bb] Re: SDR for satellites
To: <amsat-bb(AT)amsat.org>
Message-ID: <000301c87a5f$210bc380$6501a8c0(AT)WA4SCA>
Content-Type: text/plain; charset="us-ascii"
Hi,
I talked with the Flex guys at Pittsburg about that. They were doing some
tweaks in the full duplex operation. You can used external transverters,
but I was told that fully integrated ones will be available 3rd qtr this
year. Needless to say, I am expecting to return from Atlanta with an order
number, if not a rig, if they come through.
Alan
WA4SCA
------------------------------
Message: 11
Date: Thu, 28 Feb 2008 19:52:15 -0700
From: "Auke de Jong, VE6PWN" <sparkycivic(AT)shaw.ca>
Subject: [amsat-bb] Re: Newbie Here AO-51 Questions.
To: AMSAT-BB <amsat-bb(AT)amsat.org>
Message-ID: <004501c87a7e$17b3b3a0$6400a8c0(AT)sparkys>
Content-Type: text/plain; format=flowed; charset=iso-8859-1;
reply-type=original
My PC clock runs fast by over 30seconds per day. PC clocks are notoriously
inaccurate because of the quality of their base references. Make sure to
check the time vis the internet or other source(swiss watch), before trying
to use satellites, as even 30 seconds could put your automated
doppler-correction far enough wrong to be inaudible. The shift is very fast
on UHF downlinks and only gets faster on the higher frequency bands. It
will be somewhere in a 19KHz area on your dial, which is a big place to get
lost if your not sure which part of the pass the satellite is at any moment,
especially since your rig lacks a "tuning center" meter. The fact that you
heard the satellite before suggests that you started-out okay, so if you
haven't changed anything else, then this might be the most likely cause.
Also, double-check your TLE's(Keps) to see if they are recent, and ensure
that the tracking software has your physical location input correctly.
AO-51 has been in the same mode for a long time, and is transmitting strong
signals now in order to shed heat, so it's pretty hard to miss it now!
Mode L/US is a special mode they started using lately because they can use
two transmitters at the same time, trying to use up the extra electricity so
that it doesn't have to go to the heatsink of the charging-unit(batteries
full)(as I understand it, I might not be 100% acurate on this detail)
.
L=L-band uplink(1268.7MHz)
US= UHF downlink AND S-band downlink (435.300MHz)(2401.2MHz)
73's
VE6PWN
auke
----- Original Message -----
From: "Kent R. Frazier" <badfrog88(AT)gmail.com>
To: <amsat-bb(AT)amsat.org>
Sent: Thursday, February 28, 2008 10:39 AM
Subject: [amsat-bb] Newbie Here AO-51 Questions.
> Hello all, my name is Kent Frazier, K5KNT. I am just getting interested in
> working amateur satellites. I just joined AMSAT on Tuesday, 26 February
> 2008. My current hardware is an Icom IC2720 dual band in my personal
> vehicle
> with a Comet C767 dual band antenna. I also have an Icom IC-T22A 2-meter
> hand held with a Diamond RH77CA antenna.
>
> I've been trying to listen to passes of AO-51 over the last week.
> Unfortunately, I haven't been able to hear anything since Monday, 25
> February at approx 01:04 UTC (Saturday 24 FEB 19:04 CST). At that time, I
> thought I heard the call W9CPV.
>
> I'm currently using Satscape as my tracking software. My Gridsquare
> location
> is DM91sk.
>
> Are there other satellites I could monitor with the above equipment? Any
> suggestions for making my first contact?
>
> 73,
>
> Kent R. Frazier, K5KNT
>
> --
> This electronic message transmission contains information which may be
> Confidential and/or Privileged. The information is intended to be for the
> use of the individual or entity named above. Any unauthorized disclosure,
> copying, distribution or use of the contents of this information, is
> prohibited. If you are not the intended recipient, please destroy all
> copies
> of the original message.
> _______________________________________________
> Sent via AMSAT-BB(AT)amsat.org. 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
>
>
> --
> No virus found in this incoming message.
> Checked by AVG Free Edition.
> Version: 7.5.516 / Virus Database: 269.21.1/1303 - Release Date: 2/28/2008
> 12:14 PM
>
>
------------------------------
Message: 12
Date: Thu, 28 Feb 2008 22:22:08 -0800
From: "Greg D." <ko6th_greg(AT)hotmail.com>
Subject: [amsat-bb] Re: Newbie Here AO-51 Questions.
To: "Kent R. Frazier" <badfrog88(AT)gmail.com>, Gould Smith
<gouldsmi(AT)bellsouth.net>
Cc: amsat-bb(AT)amsat.org
Message-ID: <BLU133-W30136E72BE3BA25D2DFB1AA9140(AT)phx.gbl>
Content-Type: text/plain; charset="iso-8859-1"
Hi Kent,
Modes on satellites are labeled by what bands they use. L/US means that the
uplink (what we transmit on) is on the L band (1.2 ghz), and the downlink
(satellite to us) is on both U (435 mhz) and S (2.4 ghz) bands. The exact
frequencies are on the Amsat site under "Sat Status" (click on the link for
the satellite desired). Many satellites have different modes that they can be
in from time to time, and AO-51 is one of the most flexible in that regard.
Always full of surprises (and challenges).
Greg KO6TH
----------------------------------------
> Date: Thu, 28 Feb 2008 15:46:42 -0600
> From: badfrog88(AT)gmail.com
> To: gouldsmi(AT)bellsouth.net
> CC: amsat-bb(AT)amsat.org
> Subject: [amsat-bb] Re: Newbie Here AO-51 Questions.
>
> Thanks to all for the warm welcome and links to references. I'm downloading
> and printing them now.
>
> What is L/US mode?
>
> 73,
>
> Kent, K5KNT
>
_________________________________________________________________
Connect and share in new ways with Windows Live.
http://www.windowslive.com/share.html?ocid=TXT_TAGHM_Wave2_sharelife_012008
------------------------------
Message: 13
Date: Fri, 29 Feb 2008 10:58:23 +0000
From: John Heaton <john(AT)manchester.ac.uk>
Subject: [amsat-bb] Re: Newbie Here AO-51 Questions.
To: AMSAT-BB <amsat-bb(AT)amsat.org>
Message-ID: <D84A19A2-BF55-4B82-821C-430973939AE7(AT)manchester.ac.uk>
Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
On 29 Feb 2008, at 02:52, Auke de Jong, VE6PWN wrote:
> My PC clock runs fast by over 30seconds per day. PC clocks are
> notoriously
> inaccurate because of the quality of their base references. Make
> sure to
> check the time vis the internet or other source(swiss watch),...
Better still, get a program that locks your time to an Internet time
server.
John
p.s: Even better still replace MrSoftee by Linux or get a Mac
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=+xak
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------------------------------
Message: 14
Date: Fri, 29 Feb 2008 06:24:02 EST
From: GW1FKY(AT)aol.com
Subject: [amsat-bb] Re: Newbie Here AO-51 Questions.
To: john(AT)manchester.ac.uk, amsat-bb(AT)amsat.org
Message-ID: <c22.2e93c658.34f94552(AT)aol.com>
Content-Type: text/plain; charset="US-ASCII"
Hi John,
Glad that you mentioned it - I was surprised that no one came up with this
comment which of course is the key player at the root of any tracking
programme.
I use "Atom Time Pro" - a free version (unregistered use ) is available for
those interested - - Yes I know that many other options are available for
this function.
Cheers
Ken Eaton
GW1FKY
Amsat - UK
Amsat NA
------------------------------
Message: 15
Date: Fri, 29 Feb 2008 21:03:49 +0900
From: Mineo Wakita <ei7m-wkt(AT)asahi-net.or.jp>
Subject: [amsat-bb] FO-29 schedule Mar.2008
To: amsat-bb(AT)amsat.org
Message-ID: <EC87ACB24D703ei7m-wkt(AT)asahi-net.or.jp>
Content-Type: text/plain; charset=us-ascii
Mar. UTC
1 3:43 -
2 2:47 -
3 none
4 2:43 -
5 3:34 -
6 2:38 -
7 3:30 -
8 2:35 -
9 3:25 -
10 none
11 3:20 -
12 2:25 -
13 3:15 -
14 2:20 -
15 3:10 -
16 2:15 -
17 none
18 2:10 -
19 3:00 -
20 2:07 -
21 2:55 -
22 2:03 -
23 2:53 -
24 none
25 2:47 -
26 3:40 -
27 2:43 -
28 3:35 -
29 2:38 -
30 3:30 -
31 none
------------------------------
Message: 16
Date: Fri, 29 Feb 2008 21:23:17 +0800
From: "Sion Chow Q. C. \(9W2QC\)" <9w2qc(AT)9w2qc.net>
Subject: [amsat-bb] Re: LVB Tracker Questions
To: "'Howard Long'" <howard(AT)howardlong.com>, <amsat-bb(AT)amsat.org>
Message-ID: <000301c87ad6$496f2570$dc4d7050$(AT)net>
Content-Type: text/plain; charset="us-ascii"
Dear Howard and Gould,
Thank you very much for replying to my query, and also please accept my
apologies for the delay in replying back as I was tied up with some urgent
matters.
I must say that the LVB Tracker website is really great, and the materials
(documents, pictures, etc) has helped me a lot when building the tracker.
Before asking on the amsat-bb, I was trying to source for a Hitachi LCD but
failed to find one. Since the complete kit that came from AMSAT-UK came
with a Powertip LCD, I was pleased that this was available on from RS
Malaysia. However, since the model number was slightly different and I
could not find any mention about the instruction set, I thought it will be
safer to ask here.
Thanks to both of you guys for the information about the Ethernet interface
too. The circuit seems simple, and when I have finish building the other 2
units, I will try this out. Of course, I would have to obtain the Lantronix
interface first. Thanks for the heatsink precaution too. I see that this
Ethernet interface will provide me flexibility when experimenting with
different software on different machines for satellite work in the future.
A special thanks to Howard for the effort in develop the LVB tracker and
make them available for us to use. I must admit that this is a very
affordable tracker that works very well. After building the first kit, I
was very pleased with its performance that made me build the second one to
use on my other rotator.
73,
Sion Chow Q. C.,
9W2QC.
> -----Original Message-----
> From: Howard Long [mailto:howard(AT)howardlong.com]
> Sent: Thursday, February 28, 2008 9:18 PM
> To: 9w2qc(AT)9w2qc.net; amsat-bb(AT)amsat.org
> Cc: 'Gould Smith'
> Subject: RE: [amsat-bb] Re: LVB Tracker Questions
>
> Hi Sion Chow
>
> Sorry, I only just noticed your post.
>
> Putting my finger in the air, the LCD you suggest should work as it
> looks
> like it uses the standard Hitachi parallel interface.
>
> Regarding the Lantronix Ethernet adapter, exactly as Gould suggests,
> essentially it's simply converting Ethernet to a logic level UART
> interface
> just like the FTDI device does. Like the FTDI device you need to
> install a
> virtual COM port driver on your PC.
>
> I wrote up some (very) rough notes a few months ago.
>
> It consists of a 3.3V LDO and some resistors to do 5V to 3.3V
> conversion
> from the PIC to the Lantronix device. The PIC inputs are compatible
> with the
> 3.3V levels provided by the Lantronix: this is why there are two unused
> TO-92 transistors on the board that I originally thought would be
> necessary
> to do the voltage upconversion.
>
> http://www.g6lvb.com/Articles/LVBTracker/Ethernet/IMG_0057small.jpg
> http://www.g6lvb.com/Articles/LVBTracker/Ethernet/IMG_0058small.jpg
> http://www.g6lvb.com/Articles/LVBTracker/Ethernet/IMG_0059small.jpg
> http://www.g6lvb.com/Articles/LVBTracker/Ethernet/IMG_0061small.jpg
>
> The Lantronix takes a lot of juice so you must adequately heatsink the
> 5V
> regulator on the main LVB board. I don't think that a simple clip-on
> heatsink is sufficient if you adhere to the "too hot to touch" rule of
> thumb. The LDO doesn't need a heatsink.
>
> 73, Howard G6LVB
>
>
>
>
> -----Original Message-----
> From: amsat-bb-bounces(AT)amsat.org [mailto:amsat-bb-bounces(AT)amsat.org]
On
> Behalf Of Gould Smith
> Sent: 25 February 2008 20:33
> To: 9w2qc(AT)9w2qc.net; amsat-bb(AT)amsat.org
> Subject: [amsat-bb] Re: LVB Tracker Questions
>
> Hello Sion Chow,
>
> I have placed information on LCD selection for the LVB Tracker on the
> LVBTracker.com . These were generated from problems we experienced in
> selecting LCDs for the complete tracker box.
>
> The ethernet interface has only been tested by building a handmade
> interface
> board between the Lantronix part and the 28 pin Tracker box socket.
> The
> Lantronix software driver does essentially what the FTDI software does
> for
> the USB module - it converts the serial data between the LVB processor
> and
> computer serial port (real or redirected) to either USB or ethernet
> communication. The computer tracking software thinks it is taking out
> a
> standard serial port and the LVB Tracker processor thinks it is taking
> through a RS232 serial port.
>
> If you have a special program on the computer to generate rotor data
> into a
> USB port or Ethernet port you can use the modules. Essentialy you are
> just
> faking the computer tracking software into thinking it is still talking
> through a serial port and using a USB or Ethernet connection between
> the
> two.
>
> 73,
> Gould, WA4SXM
>
> ----- Original Message -----
> From: <9w2qc(AT)9w2qc.net>
> To: <amsat-bb(AT)amsat.org>
> Sent: Monday, February 25, 2008 2:53 PM
> Subject: [amsat-bb] LVB Tracker Questions
>
>
> > Dear All,
> >
> > Greetings from Kuala Lumpur, Malaysia.
> >
> > I have built one LVB Tracker complete kit from AMSAT-UK, and am
> > extremely pleased with it. Now I would like to build another unit,
> but
> > this time from scratch. I have two questions about this tracker,
> > which I hope someone can help me clarify.
> >
> > 1. Can someone kindly advice a suitable LCD panel for this tracker?
> > Would the Powertip PC1602ARU-HWB-G be compatible with this tracker?
> > (RS Part Number 466-6452)
> >
> > 2. I am also very interested into the Ethernet interface, but have no
> > clue on how this works. I know a suitable unit is produced by
> > Lantronix but that is about it. Could someone kindly advice what do
> I
> > need to get the Ethernet interface going? Is there an evaluation kit
> > readily available like the one from FTDI for the USB interface?
> >
> > Any help and advice is really appreciated. Thank you very much in
> > advance.
> >
> > 73,
> > Sion Chow Q. C.,
> > 9W2QC.
> >
> > _______________________________________________
> > Sent via AMSAT-BB(AT)amsat.org. 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(AT)amsat.org. 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(AT)amsat.org. Opinions expressed are those of the author.
Not an AMSAT member? Join now to support the amateur satellite program!
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End of AMSAT-BB Digest, Vol 3, Issue 110
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