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CX2SA > SATDIG 04.05.08 17:45l 785 Lines 23406 Bytes #999 (0) @ WW
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To : SATDIG@WW
Today's Topics:
1. Re: FT 847 and Doppler for Delfi (Stefan Wagener)
2. SEEDS over Colombia (algaviri(AT)orbitel.net.co)
3. More Mp3 and Pic from SEED (Raul Romero CA3SOC)
4. Re: VO52 questions.... Fri, 2 May 2008 21:29:26 -0700 (PDT)
(John Kopala)
5. Re: [eu-amsat] SEEDS reception (Stefan Wagener)
6. DELFI C 3 (Luc Leblanc)
7. DELFI-C3 and SEEDS over West Malaysia (Sion Chow Q. C. (9W2QC))
8. Re: FT 847 and Doppler for Delfi (john heath)
9. Yaesu G-800 to replace G-5500 Azimuth rotor
(Sion Chow Q. C. (9W2QC))
10. FCAL still alive (Armando Mercado)
11. Re: Yaesu G-800 to replace G-5500 Azimuth rotor (i8cvs)
12. Re: Computer Controll for old Yaesu Rotators (K & R Yoksh)
13. AMSAT Web Page Update (JoAnne Maenpaa)
14. Seeds over Brasil South America (Fabio Teixeira Magalhaes)
15. seeds report (John Price)
16. GO-32, APRS mobile, and wasted D7's... (Robert Bruninga)
----------------------------------------------------------------------
Message: 1
Date: Sat, 3 May 2008 20:58:26 -0500
From: "Stefan Wagener" <stefan_wagener(AT)hotmail.com>
Subject: [amsat-bb] Re: FT 847 and Doppler for Delfi
To: <APBIDDLE(AT)mailaps.org>, "'amsat'" <amsat-bb(AT)amsat.org>
Message-ID: <BAY130-DAV1059E9736EBC46D093D9E3F6D40(AT)phx.gbl>
Content-Type: text/plain; charset="US-ASCII"
Yes,
The best thing to do is using a "free" program like Spectran
(http://www.weaksignals.com/) to center the audio frequency around 1600Hz by
fine tuning the FT-847. Rascal does the rest. Have used it now for several
days and shipping frames to our Dutch friends.
Stefan, VE4NSA
-----Original Message-----
From: amsat-bb-bounces(AT)amsat.org [mailto:amsat-bb-bounces(AT)amsat.org] On
Behalf Of Alan P. Biddle
Sent: May-03-08 8:18 PM
To: 'amsat'
Subject: [amsat-bb] Re: FT 847 and Doppler for Delfi
John,
There is indeed a 10 Hz limit on resolution in the CAT, set by the firmware.
However, that should not be a problem. All the many TLM programs I have
used in the past have worked well with 10 and even 100 Hz step sizes. My
impression is that RASCAL could do with a little tweaking of the PLL values,
but that may be more of an indicator issue. My experience is that is will
in fact decode nicely, even though the Sync indication blinks off. FWIW
Alan
WA4SCA
_______________________________________________
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------------------------------
Message: 2
Date: Sat, 03 May 2008 21:05:19 -0500
From: "algaviri(AT)orbitel.net.co" <algaviri(AT)orbitel.net.co>
Subject: [amsat-bb] SEEDS over Colombia
To: "Henk, PA3GUO" <hamoen(AT)iae.nl>
Cc: amsat-bb(AT)amsat.org
Message-ID: <481D19DF.4000103(AT)orbitel.net.co>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Seeds over Colombia
S=9, strong voice and nice SSTV image
Ts2000(x),M2 and yaesu G5500
73
HK4MKE
_______________________
Alvaro Gaviria C.
N 06? 06' 42" W 75? 29' 43"
Colombia
E-mail algaviri(AT)orbitel.net.co
------------------------------
Message: 3
Date: Sat, 3 May 2008 22:51:13 -0400
From: "Raul Romero CA3SOC" <ce3soc(AT)gmail.com>
Subject: [amsat-bb] More Mp3 and Pic from SEED
To: "Amsat-BB(AT)Amsat.Org" <amsat-bb(AT)amsat.org>
Message-ID: <D1C65FBFFD7E4D4EB35FFD2CEE8DE42D(AT)p42800>
Content-Type: text/plain; charset="iso-8859-1"
In my Pc Server
http://ce3soc.no-ip.org
for more pic and audio
73
tnk for look
Raul
CA3SOC
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------------------------------
Message: 4
Date: Sat, 3 May 2008 23:04:27 -0700
From: "John Kopala" <jkopala(AT)gmail.com>
Subject: [amsat-bb] Re: VO52 questions.... Fri, 2 May 2008 21:29:26
-0700 (PDT)
To: <amsat-bb(AT)amsat.org>, <sunsetdialpad(AT)yahoo.com>
Message-ID: <06fd01c8adac$b67091f0$6701a8c0(AT)sierrap4dual>
Content-Type: text/plain; charset="iso-8859-1"
I think that crazy tuning pattern boils down to this: If the station you
hear is not using doppler they will appear to be going up the band. Then a
station that is using doppler control may appear stationary or moving up the
band depending upon how fast your doppler AND their doppler are updating.
More frequent updates are better and eliminate a bunch of tuning. I think
the default is around 100 hz. I use 20 hz.
For your own signal, I'm assuming that your are hearing yourself. I often
have to tune either the uplink or the downlink as much as 1500 Hz to match
the uplink to the downlink. You are right on the LSB up and the USB down.
Don't give up, you are almost there. Don't worry about the other stations.
Pick a open spot and tune yourself first using the CAT Tuning window. I
believe I usually have to tune the Uplink UP. Once you do it the first
time, you'll get the hand of it.
Also, sometimes when I first select an SSB bird, the Downlink and Uplink
frequencies will be a ways off from the frequencies shown in the CAT Tuning
window. If this happens, go to the up and down buttons just to the right of
the Downlink and Uplink display, click the 20 up and then the 20 down. The
Downlink and Uplink should jump to the proper frequency. This may have been
caused by my CAT delay not being high enough, but I haven't observed whether
changing that fixed it.
John
N7JK
From: asd asd <sunsetdialpad(AT)yahoo.com>
Subject: [amsat-bb] VO52 questions....
I have been trying for a week to get into the VO52 satellite and have some
questions... I can hear people talking and have to constantly manually tune
them in in crazy patterns. One persons doppler will go up and another will
go down. It is like I am chasing people that are constantly changing their
transmit frequency and does not fit a normal doppler change. Another thing
is that I cannot tune myself in at all. It is like I am transmitting in the
wrong sideband. I am recieving the downlink in USB and it is my
understanding that the uplink is supposed to be LSB. The program I am using
is SatPC32 that CAT tunes an IC910H into a M2 2MCP14 - M2436CP30 both with
right hand polarization. Just trying to get away from the FM Birds and try
some new ones and looking for some help to figure out what I may be
overlooking or doing wrong.
Thanks...
------------------------------
Message: 5
Date: Sat, 3 May 2008 19:08:52 -0500
From: "Stefan Wagener" <stefan_wagener(AT)hotmail.com>
Subject: [amsat-bb] Re: [eu-amsat] SEEDS reception
To: "'Luc Leblanc'" <lucleblanc6(AT)videotron.ca>,
<eu-amsat(AT)yahoogroups.com>
Cc: amsat-bb(AT)amsat.org
Message-ID: <BAY130-DAV4EABFBD45ECE57820BBCCF6D40(AT)phx.gbl>
Content-Type: text/plain; charset="us-ascii"
Hi Luc,
If you look at the schedule (on their website) it appears it will be in CW
for a while (again).
All the best.
Stefan VE4NSA
-----Original Message-----
From: amsat-bb-bounces(AT)amsat.org [mailto:amsat-bb-bounces(AT)amsat.org] On
Behalf Of Luc Leblanc
Sent: May-03-08 9:33 AM
To: eu-amsat(AT)yahoogroups.com
Cc: amsat-bb(AT)amsat.org
Subject: [amsat-bb] Re: [eu-amsat] SEEDS reception
>
> SEEDS was still in CW this morning pass 1426Z no SSTV was active
I got some answers from the SEEDS website i am not too sure if they switched
it back to CW bu that's what i copy here
Category: Operation Report
05/03: 6th pass flash report 2008/05/03
Time: 22:57(GMT+9)
Author: seeds master
We checked the batteries voltage at first, And we tried to receive downlink
the data which got right after deployment from XPOD. But we
couldn't send uplink command, switched to digi-talker Mode.
We finished digi-talker Mode during this pass at nihon university ground
station.
Luc Leblanc VE2DWE
Skype VE2DWE
www.qsl.net/ve2dwe
WAC BASIC CW PHONE SATELLITE
_______________________________________________
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: 6
Date: Sat, 03 May 2008 22:31:59 -0400
From: Luc Leblanc <lucleblanc6(AT)videotron.ca>
Subject: [amsat-bb] DELFI C 3
To: amsat-bb(AT)AMSAT.Org
Message-ID: <481CE7DF.29455.99E3B0(AT)lucleblanc6.videotron.ca>
Content-Type: text/plain; charset=US-ASCII
96 packet uploaded to the DELFI C 3 server a near overhead pass this evening
and 45 seconds after Orbitron confirm he's was out of eclipse
TLM start to flow in and signal peaked S6 at TCA. KEPS start to be off again
by +- 45 seconds. DELFI was in science mode at 145.930
With 263 miliwatt the little box seems in good shape RAP 1 temperature was -
68.1C and RAP 2 at 10.497C
If you ask me what's RAP mean for i will tell you i don't know.
Here is a part of the telemetry frames
from: DLFIC3 to: TLM a8 98 9b 40 40 40 00 88 98 8c 92 86 66 01 03 f0 e1 08
20 00 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 bb 25 b7 39 b1 42 9e 51 82 5e 5d
69 2f 74 04 7d 01 00 01 00 01 00 01 00 01 00 01 00 01 00 01
00 7d 75 bf 78 00 00 00 00 9a 01 b2 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00
from: DLFIC3 to: TLM a8 98 9b 40 40 40 00 88 98 8c 92 86 66 01 03 f0 e1 08
21 00 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 bb 26 b6 39 b1 42 9e 51 82 5e 5d
6a 2f 75 04 7d 01 00 01 00 01 00 01 00 01 00 01 00 01 00 01
00 7e 76 bf 79 00 00 00 00 9a 01 b2 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00
"-"
Luc Leblanc VE2DWE
Skype VE2DWE
www.qsl.net/ve2dwe
WAC BASIC CW PHONE SATELLITE
------------------------------
Message: 7
Date: Sun, 4 May 2008 16:02:28 +0800
From: "Sion Chow Q. C. \(9W2QC\)" <9w2qc(AT)9w2qc.net>
Subject: [amsat-bb] DELFI-C3 and SEEDS over West Malaysia
To: <missioncontrol(AT)delfic3.nl>, "'seeds message'"
<seeds_message(AT)forth.aero.cst.nihon-u.ac.jp>, <amsat-
bb(AT)amsat.org>
Cc: ybgo(AT)yahoo.com, 'Sangat Singh' <sangatsingh(AT)gmail.com>,
g4zfe(AT)g4zfe.com
Message-ID: <000301c8adbd$50545f30$f0fd1d90$(AT)net>
Content-Type: text/plain; charset="us-ascii"
Dear All,
This morning I was very happy to have copied very great and interesting
signals from both DELFI-C3 and SEEDS. Pass details are as below:
Time: 1035 Local or 0235 UTC
Date: 04 May 2008
Max Elevation: 76 degrees
Tracking: Object E
The first half of the pass was used to track Delfi-C3 with 180 packet frames
decoded. Just after TCA, Delfi-C3 stopped TX suddenly and appeared briefly
again shortly. Can anyone explain this phenomenon?
After that it was no longer heard even on 145.870 MHz +/- so I QSYed to
SEEDS. To my surprise, SEEDS was in Digitalker mode. Also manage to decode
3 SSTV pictures (they are the same). Below are some interesting
screenshot, images and recordings.
RASCAL decoding Delfi-C3 telemetry ->
http://www.9w2qc.net/amsatbb/delfi04may1035.JPG
RAW Delfi-C3 frames -> http://www.9w2qc.net/amsatbb/delfi04may1035.txt
SEEDS SSTV #1 -> http://www.9w2qc.net/amsatbb/seed04may1035-1.jpg
SEEDS SSTV #2 -> http://www.9w2qc.net/amsatbb/seed04may1035-2.jpg
SEEDS SSTV #3 -> http://www.9w2qc.net/amsatbb/seed04may1035-3.jpg
For those who like to hear how Delfi-C3 sounded,
http://www.9w2qc.net/amsatbb/delfi04may1035.mp3
I understand that SEEDS's digitalker contains a secret message that has to
be copied for those intending to collect their special QSL card. Therefore
I will not publish the full recording but only a fraction of it. This is
just the English ID portion.
http://www.9w2qc.net/amsatbb/seeds04may1035.mp3 If the command team will
like a full recording, I am more then pleased to provide one.
It is truly amazing how well 0.485 Watts signals of SEEDS on 70 CM
travelling some 1500 KM is picked up on earth.
Equipment used:
Rig: IC-910H
Antenna: 2M - 2x10 element Hor Yagi & 70CM - 2x15 Hor Yagi
Preamp: SSB SP-2000 & SSB SP-7000
73,
Sion Chow Q. C.,
9W2QC.
------------------------------
Message: 8
Date: Sun, 4 May 2008 09:10:33 +0100
From: "john heath" <g7hia(AT)btinternet.com>
Subject: [amsat-bb] Re: FT 847 and Doppler for Delfi
To: "Jeroen Vreeken" <pe1rxq(AT)amsat.org>
Cc: amsat <amsat-bb(AT)amsat.org>
Message-ID: <000701c8adbe$53f5ac60$4001a8c0(AT)MainPC>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Hi Joroen,
Try a hard reset, the software in the 817 may have become corrupted.
Try running with the software COMMANDER I find it works realy well, and it
gives you some more features on the 817. It was written by the authjor of
Ham Radio Deluxe.
Good luck.
73 John G7HIA
------------------------------
Message: 9
Date: Sun, 4 May 2008 16:19:44 +0800
From: "Sion Chow Q. C. \(9W2QC\)" <9w2qc(AT)9w2qc.net>
Subject: [amsat-bb] Yaesu G-800 to replace G-5500 Azimuth rotor
To: <amsat-bb(AT)amsat.org>
Message-ID: <000e01c8adbf$a08c7ee0$e1a57ca0$(AT)net>
Content-Type: text/plain; charset="us-ascii"
Dear All,
I have a Yaesu G-5500 rotator set with the azimuth rotor being faulty. I
have not got the time to open up and check that yet.
However, it appears that the azimuth rotor of the G-5500 is similar (or the
same?) as that of the Yaesu G-800. I would be glad if anyone could kindly
advice if the G-800 rotor will replace the G-5500 azimuth rotor well? And
will the G-5500 control box be able to control it?
Thank you very much in advance.
73,
Sion Chow Q. C.,
9W2QC.
------------------------------
Message: 10
Date: Sun, 4 May 2008 08:12:13 -0400
From: "Armando Mercado" <am25544(AT)triton.net>
Subject: [amsat-bb] FCAL still alive
To: <amsat-bb(AT)amsat.org>
Message-ID: <000601c8ade0$600e2b40$3411acd1(AT)hppav>
Content-Type: text/plain; format=flowed; charset="Windows-1252";
reply-type=original
Greetings,
Just copied ANDE FCAL (cat. #29667) on 437.385 during the
1140 UTC pass over EN62.
Space-Track has predicted re-entry of May 2. It is amazing
how low this "cannon ball" is. This last pass was a near
over head pass and the range was 162 miles at closest approach.
Height is 138 miles. Even so, reception is difficult. There seems
to be many deep nulls in the antenna pattern of this bird.
Some packets from yesterday and today. All time UTC:
03-May-08 10:28:31
KD4HBO>TELEM,TELEM:02932EB80014F88FFFEFEC8002CFC00001FFE88FFFEFD30FFFFFCA8
03-May-08 10:28:38 KD4HBO>TELEM,TELEM:Analog
0008000000F400DB00A4000900DE0004 N 0000001E
03-May-08 10:29:16
KD4HBO>TELEM,TELEM:02932EE5005FEC0000FEC00190FC78001EFED8FFFEFD300000FC50
03-May-08 10:29:23 KD4HBO>TELEM,TELEM:Analog
000400FC00F400DD00A900FA00DE0004 N 0000001E
04-May-08 10:11:15
KD4HBO>TELEM,TELEM:02947D0E003FB98FFFFFDF80099FEA8FFFFFD280003FF80FFFEFD58
04-May-08 10:12:44
KD4HBO>TELEM,TELEM:02947D80E5FC980004FDB8000BFF680010FD20FFFEFF300000FD10
04-May-08 10:12:52 KD4HBO>TELEM,TELEM:Analog
0012000000EC00DC00AD00FB00DD0011 N 0000001E
04-May-08 10:13:29
KD4HBO>TELEM,TELEM:02947D9501F1FD8000EFDB80002FF78001EFD38FFFEFED00003FCF0
04-May-08 10:13:37 KD4HBO>TELEM,TELEM:Analog
001100F500ED00DC00AC00FB00DE0008 N 0000001E
04-May-08 11:43:15
KD4HBO>TELEM,TELEM:029492AD000FA10006FF900003FC10000E0000FFFEFB9801CF0218
73, Armando, N8IGJ
------------------------------
Message: 11
Date: Sun, 4 May 2008 14:44:29 +0200
From: "i8cvs" <domenico.i8cvs(AT)tin.it>
Subject: [amsat-bb] Re: Yaesu G-800 to replace G-5500 Azimuth rotor
To: "Sion Chow Q. C. \(9W2QC\)" <9w2qc(AT)9w2qc.net>, "AMSAT-BB"
<amsat-bb(AT)amsat.org>
Message-ID: <001901c8ade4$98fc9d20$0201a8c0(AT)tin.it>
Content-Type: text/plain; charset="iso-8859-1"
----- Original Message -----
From: "Sion Chow Q. C. (9W2QC)" <9w2qc(AT)9w2qc.net>
To: <amsat-bb(AT)amsat.org>
Sent: Sunday, May 04, 2008 10:19 AM
Subject: [amsat-bb] Yaesu G-800 to replace G-5500 Azimuth rotor
> Dear All,
>
> I have a Yaesu G-5500 rotator set with the azimuth rotor being faulty. I
> have not got the time to open up and check that yet.
>
> However, it appears that the azimuth rotor of the G-5500 is similar (or
the
> same?) as that of the Yaesu G-800. I would be glad if anyone could kindly
> advice if the G-800 rotor will replace the G-5500 azimuth rotor well? And
> will the G-5500 control box be able to control it?
>
> Thank you very much in advance.
>
> 73,
>
> Sion Chow Q. C.,
>
> 9W2QC.
Hi Sion, 9W2QC
There are several models into the G-800 family :
G-800 S , G-800 SA , G-800 SDX , G-800 DXA and they are
electrically different.
Which of these models are yours ?
73" de
i8CVS Domenico
------------------------------
Message: 12
Date: Sun, 4 May 2008 08:11:20 -0500
From: "K & R Yoksh" <yokshs(AT)sbcglobal.net>
Subject: [amsat-bb] Re: Computer Controll for old Yaesu Rotators
To: <amsat-bb(AT)amsat.org>
Message-ID: <001d01c8ade8$58c5b8f0$6401a8c0(AT)MAIN>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
-----Original Message-----
From: amsat-bb-bounces(AT)amsat.org [mailto:amsat-bb-bounces(AT)amsat.org]On
Behalf Of Tony
Sent: Friday, May 02, 2008 23:19 UTC
To: amsat-bb(AT)amsat.org
Subject: [amsat-bb] Computer Controll for old Yaesu Rotators
All,
I have an old Yaesu G-500A elevation rotator mated to a Yaesu G-800SDX
and would like to use computer controll for both. They each have their
own controller, but they do not have buit-in computer controll boards.
Idiom ( http://www.idiompress.com/rotorcard.html ) makes a board for the
G-800SDX, but I can't find anything for the G-500A.
What would be the best inteface / boads to use with this set-up? The
Yaesu GS-232 interface is a bit pricy and was wondering about an
alternative. I use NOVA software for tracking.
Thanks,
Tony -K2MO
Hello,
I use Kansas City Tracker to operate my CDE Ham II azimuth rotor and
Yaesu/Kenpro G500a elevation rotor. Modifying the G500a control box was
a breeze! The rear panel has an eight wire terminal strip, although only
wires 1-6 are actually used. I ran the common motor control wire to terminal
#8. Now all necessary wires for automatic control are available at the back
panel.
I found my KCT board here on the BB a couple of years ago. . Seems like
there should be a few more out there for sale? I think
that the going rate is in the $40-$50 range? Just make sure that you have a
PC with an available ISA slot. The most modern
PC I've found with an ISA slot is a Pentium 2 450 MHz. It runs Windows 98
quite nicely, and SATPC32 operates my Icom radios and
KCT quite nicely. I also use InstantTrack/Instanttune, which can be run in
Windoze or DOS.
Of course. the LVB tracker looks really nice, too! Some day.... <grin>
73,
Kyle Yoksh
K0KN
Olathe, Kansas
------------------------------
Message: 13
Date: Sun, 4 May 2008 08:52:58 -0500
From: "JoAnne Maenpaa" <k9jkm(AT)comcast.net>
Subject: [amsat-bb] AMSAT Web Page Update
To: <amsat-bb(AT)amsat.org>
Message-ID: <000501c8adee$2a141500$6801a8c0(AT)familyroom>
Content-Type: text/plain; charset="us-ascii"
Hello everyone,
The http://www.amsat.org web page has been updated to discuss the latest
AO-16 Operations status. This is the bottom story on the main page. The
article also includes links to download the Warbler software for AO-16
telemetry monitoring and e-mail links to the AO-16 command team.
--
73 de JoAnne K9JKM
k9jkm(AT)amsat.org
------------------------------
Message: 14
Date: Sun, 04 May 2008 11:01:26 -0300
From: Fabio Teixeira Magalhaes <ftmagalhaes(AT)terra.com.br>
Subject: [amsat-bb] Seeds over Brasil South America
To: AMSAT-BB <amsat-bb(AT)amsat.org>
Message-ID: <481DC1B6.3050207(AT)terra.com.br>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Hello All,
This morning I have copied voice and SSTV signals from SEEDS at 12:31 UTC,
max elevation 57?.
Fabio - PY4AJ
GH70un
Amsat 19748
------------------------------
Message: 15
Date: Sun, 4 May 2008 10:22:51 -0400
From: "John Price" <n4qwf1(AT)gmail.com>
Subject: [amsat-bb] seeds report
To: amsat-bb(AT)amsat.org
Message-ID:
<8d1b8e80805040722v68c6965cm4d25e6c468aef7e6(AT)mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
Seeds was in both slow scan and digitalk over FM07 this morning
05/04/2008 (AT) 13:50z. Please this link for copy of slow can image.
http://picasaweb.google.com/n4qwf1/SeedsSlowScan
--
N4QWF Amateur Radio Operator
AO-7,AO-27,SO-50,AO-51,VO-52
Internet N4QWF(AT)AMSAT.ORG
Formerly KC4AHW VK3FEZ
Amsat Member #27845
DXCC #33,478
VUCC SAT #135
WAS SAT #296
51 on 51 #13
LON -79.25 LAT 37.45 Grid FM07
>From the Foothills of the Blueridge
*Life should not be a journey to the grave with the intention of
arriving safely in a pretty and well preserved body, but rather to
skid in broadside, thoroughly used up, totally worn out, and loudly
proclaiming - "WOW, What a ride!"
------------------------------
Message: 16
Date: Sun, 4 May 2008 11:22:03 -0400
From: "Robert Bruninga" <bruninga(AT)usna.edu>
Subject: [amsat-bb] GO-32, APRS mobile, and wasted D7's...
To: <amsat-bb(AT)amsat.org>
Message-ID: <0deb01c8adfa$9b34b0d0$42577a83(AT)ewlab.usna.edu>
Content-Type: text/plain; charset="us-ascii"
> Well, 4XTECH showed up on the display of my
> mobile D710 a couple of times, but I didn't get a
> MY POSITION. I wasn't able to find anyone local to
> listen out for me.
The good news is that it is easier to see one's self via GO32
than via the ECHO satellite, because GO32 has a PTT delay some
of the time. So your radio will have turned around in time to
hear your packet come back... But being in the mobile, you
probably only get a good -downlink- for the center 3 minutes of
a good high pass.
But you can get in on the uplink from horizon to horizon if you
are running your typical 50 watts mobile. That is why we need
LOTS more people Igating the downlink.
The best way to do this is to encourage all D7 owners that do
not use their D7 routinely, to not just set it in the closet,
but leave it hooked to an Igate all the time they are not using
it. Connect this through a SHORT coax to a 19" vertical whip.
This station will receive GO-32 downlink packets for the center
3 to 5 minutes of the best two passess per day... And if we have
enough people doing this (say a dozen over the USA), then at
least one of them will always have a good chance of hearing each
packet and feeding the APRS-IS... Thus giving mobiles all over
the continant the ability to get out a positon, messsage, or
email from anywhere.
And since coax loss is the big bugga... The better way is to put
the D7 up near the antenna and run only the 3 wire RS-232 down
to the shack... Then you don't need a pre-amp... Shucks, you
can even use the same RS-232 to remotely control the radio, and
use it for other weak-signal reception work as needed too...
Bob, WB4APR
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End of AMSAT-BB Digest, Vol 3, Issue 222
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