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CX2SA > SATDIG 14.04.09 12:47l 1312 Lines 38804 Bytes #999 (0) @ WW
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Today's Topics:
1. AO51 L/U report Europe (Henk, PA3GUO)
2. Improved Ultra Small Linear Transponder video (William Leijenaar)
3. Re: Improved Ultra Small Linear Transponder video (Bill Ress)
4. SatNewsDaily - SumbandilaSat: From Sub To Space (Trevor .)
5. Re: Improved Ultra Small Linear Transponder video
(Nigel Gunn G8IFF/W8IFF)
6. Slightly OT: Mobile Installations (Jim Sanford)
7. Re: Sat Tracking and SatPC32 w/ICOM rig - CT-17
hardwaremodneeded (Bill Dzurilla)
8. AO-51 L/U (w7lrd@xxxxxxx.xxxx
9. Re: Improved Ultra Small Linear Transponder video
(w7lrd@xxxxxxx.xxxx
10. Hamsat Birthday Workhop Advance info (Prathap Kumar)
11. 1.2Ghz Helix ebay (w7lrd@xxxxxxx.xxxx
12. Re: Sat Tracking and SatPC32 w/ICOM rig - CT-17
hardwaremodneeded (Erich Eichmann)
13. Re: [Mw] Slightly OT: Mobile Installations (Edward Cole)
----------------------------------------------------------------------
Message: 1
Date: Mon, 13 Apr 2009 21:14:39 +0200 (CEST)
From: "Henk, PA3GUO" <hamoen@xxx.xx>
Subject: [amsat-bb] AO51 L/U report Europe
To: <amsat-bb@xxxxx.xxx>
Message-ID: <2999.212.61.85.20.1239650079.squirrel@xxxxxxx.xxx.xx>
Content-Type: text/plain; charset=iso-8859-1
AO51 L/U pass this evening had clear signals.
23cm uplink, 70cm downlink (in my case, dont have 13cm here)
Heared:
-------
EA2BJM (very strong)
UR4UAR
SP1TMN
GM0FMW
Worked:
-------
IK1SOW
Radio TS2000X:
- uplink 10W, 35 elements TONNA
- dnlink, 2x8 elements Cushcraft
Henk, PA3GUO
------------------------------
Message: 2
Date: Mon, 13 Apr 2009 22:52:40 +0200
From: William Leijenaar <pe1rah@xxxxxxx.xxx>
Subject: [amsat-bb] Improved Ultra Small Linear Transponder video
To: <amsat-bb@xxxxx.xxx>
Message-ID: <BAY116-W50DA5056A5318A8A184F07907F0@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
Hi AMSATs,
I put some new video on youtube about my thiny linear transponder.
Its a slighty improved version, with better distortion behaviour and some
extra features, like a low voltage switch off circuit.
Some general details:
Its a Mode-UV transponder with 23dBm PEP output on 2m. It runs on 3.7Vdc,
power switches off when voltage drops below 3.5Vdc.
Bandwidth is 30kHz, and total weight is around 22 grams. It has an onboard
beacon that is fully programmable (message, frequency and power).
The RX and TX frequencies of the transponder are user programmable, and
all
oscillators are locked to an onboard TCXO.
This improved version has also the option for an external reference
oscillator
input, and has a tap at 70cm input and a tap on its 1st IF.
The taps are very usefull to interconnect to other transponders or
connection
to external telemetry modems.
The video can be found at:
http://www.youtube.com/watch?v=5j60SJroodg
I am presenter and filmer at the same time.
Please forgive me about the shivering image hihi...
More information will follow...
73 de PE1RAH
William Leijenaar
---
_________________________________________________________________
See all the ways you can stay connected to friends and family
http://www.microsoft.com/windows/windowslive/default.aspx
------------------------------
Message: 3
Date: Mon, 13 Apr 2009 14:07:18 -0700
From: Bill Ress <bill@xxxxxxxxxxx.xxx>
Subject: [amsat-bb] Re: Improved Ultra Small Linear Transponder video
To: William Leijenaar <pe1rah@xxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <49E3A986.7000102@xxxxxxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Hi William,
Very nice presentation. How much current does the transponder draw at
+23 dBm Pout?
Regards...Bill - N6GHz
William Leijenaar wrote:
> Hi AMSATs,
>
> I put some new video on youtube about my thiny linear transponder.
> Its a slighty improved version, with better distortion behaviour and some
extra features, like a low voltage switch off circuit.
>
> Some general details:
> Its a Mode-UV transponder with 23dBm PEP output on 2m. It runs on 3.7Vdc,
power switches off when voltage drops below 3.5Vdc.
> Bandwidth is 30kHz, and total weight is around 22 grams. It has an onboard
beacon that is fully programmable (message, frequency and power).
> The RX and TX frequencies of the transponder are user programmable, and all
oscillators are locked to an onboard TCXO.
> This improved version has also the option for an external reference
oscillator input, and has a tap at 70cm input and a tap on its 1st IF.
> The taps are very usefull to interconnect to other transponders or
connection to external telemetry modems.
>
> The video can be found at:
> http://www.youtube.com/watch?v=5j60SJroodg
>
> I am presenter and filmer at the same time.
> Please forgive me about the shivering image hihi...
>
> More information will follow...
>
> 73 de PE1RAH
> William Leijenaar
> ---
> _________________________________________________________________
> See all the ways you can stay connected to friends and family
> http://www.microsoft.com/windows/windowslive/default.aspx
> _______________________________________________
> 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: 4
Date: Mon, 13 Apr 2009 21:10:39 +0000 (GMT)
From: "Trevor ." <m5aka@xxxxx.xx.xx>
Subject: [amsat-bb] SatNewsDaily - SumbandilaSat: From Sub To Space
To: amsat-bb@xxxxx.xxx
Message-ID: <231300.95558.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
A Sat News Daily story dated April 12, 2009, says SumbandilaSat to launch
in
June from a sub.
SumbandilaSat: From Sub To Space
http://www.satnews.com/cgi-bin/story.cgi?number=195613620
SatNewsDaily were quoting from a South African Business Report story -
Russian sub to launch second satellite
http://www.busrep.co.za/index.php?fSectionId=552&fArticleId=4930464
The South African Business Report website last year carried a story on the
use
of Soyuz launcher at Baikonur.
http://www.busrep.co.za/index.php?fSectionId=552&fArticleId=4596130
The Southern Africa AMSAT website is still quoting Baikonur
http://www.amsatsa.org.za/
73 Trevor M5AKA
----
------------------------------
Message: 5
Date: Mon, 13 Apr 2009 21:11:28 +0000
From: Nigel Gunn G8IFF/W8IFF <nigel@xxxxx.xxx>
Subject: [amsat-bb] Re: Improved Ultra Small Linear Transponder video
To: William Leijenaar <pe1rah@xxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <49E3AA80.6040505@xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
That's amazing, William.
You've great talents as a designer.
William Leijenaar wrote:
> Hi AMSATs,
>
> I put some new video on youtube about my thiny linear transponder.
> Its a slighty improved version, with better distortion behaviour and some
extra features, like a low voltage switch off circuit.
>
--
Nigel A. Gunn, 1865 El Camino Drive, Xenia, OH 45385-1115, USA. tel +1
937
825 5032
Amateur Radio G8IFF W8IFF (was KC8NHF), e-mail nigel@xxxxx.xxx www
http://www.ngunn.net
Member of ARRL, GQRP #11396, QRPARCI #11644, SOC #548, Flying Pigs QRP
Club
International #385,
Dayton ARA #2128, AMSAT-NA LM-1691, AMSAT-UK, MKARS, ALC,
GCARES, XWARN
------------------------------
Message: 6
Date: Mon, 13 Apr 2009 21:22:02 -0400
From: Jim Sanford <wb4gcs@xxxxx.xxx>
Subject: [amsat-bb] Slightly OT: Mobile Installations
To: "'Microwave list'" <microwave@xxxx.xxxxxxx.xxx>, "'Amsat - BBs'"
<amsat-bb@xxxxx.xxx>, WASH Club Reflector <n3sh@xxxxxxxxxxx.xxx>
Message-ID: <49E3E53A.70906@xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
All:
The other day, somebody decided he needed to get thru an intersection
ahead of me . . . . so, in search of a replacement chariot to support
the mobile equipment. Considering:
Toyota Highlander hybrid
Saturn VUE Hybrid
Have read the Consumer Reports rap on all.
QUESTION: Does anybody have any experience or guidance regarding:
-- problems installing HF/VHF/UHF radios in either vehicle
-- problems with noise FROM the hybrid equipment
I remember that some years ago, all the Japanese manufacturers would
void your warranty if you installed two-way radio equipment. That
appears to be no longer true, as long as "properly installed" (defined
as adequately fused).
All experiences welcome.
Thanks for bandwidth.
73,
Jim
wb4gcs@xxxxx.xxx
------------------------------
Message: 7
Date: Mon, 13 Apr 2009 18:55:05 -0700 (PDT)
From: Bill Dzurilla <billdz.geo@xxxxx.xxx>
Subject: [amsat-bb] Re: Sat Tracking and SatPC32 w/ICOM rig - CT-17
hardwaremodneeded
To: Erich Eichmann <erich.eichmann@xxxxxxxx.xx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <132098.93312.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Hello Erich,
Thank you again. Yes, I would like to work the linear satellites with a
single semi-duplex radio, the IC-7000. I have been trying to drum up some
local interest in the linear satellites, and the usual response is that it
costs too much -- need 2 radios or one expensive rig like the TS-2000. I
am
trying to show them that one modest rig is enough, with the help of a nice
tracking program like yours.
Anyhow, SatPC32 is tracking the frequencies well now with the patch
applied.
The only small problem is that it seems to work only with a CT-17 cable
attached directly to the computer's serial port. I tried 3 different
serial-
USB adapters, but each time I got the message "Error reading COM device."
The
USB-Serial adapters work fine with Ham Radio Deluxe and other radio
software,
but it seems they do not work with SatPC32, at least not on my computer
running Windows Vista.
Thanks also for the explanation on the the "Downl. Corr."
controls and the +/- keys for receive frequency correction. As I
appreciate
it, these are similar to the RIT function on the radio, but we can store
the
corrected offset permanently, correct?
73, Bill NZ5N
--- On Mon, 4/13/09, Erich Eichmann <erich.eichmann@xxxxxxxx.xx> wrote:
> From: Erich Eichmann <erich.eichmann@xxxxxxxx.xx>
> Subject: Re: [amsat-bb] Re: Sat Tracking and SatPC32 w/ICOM rig - CT-17
hardwaremodneeded
> To: billdz.geo@xxxxx.xxx
> Cc: amsat-bb@xxxxx.xxx
> Date: Monday, April 13, 2009, 2:19 AM
> Hi Bill,
> my remark in the last line of the patch description relates
> to satellite operation with a single semi duplex radio, i.e.
> the IC-706MKIIG.
>
> Of course, the software automatically corrects the uplink
> and downlink frequencies for Doppler correction and for QSY
> around the passband of SSB sats you can use the radio's
> VFO knob also with these radios.
>
> The remark refers only to manual frequency
> "corrections" with SSB sats. With satellite
> radios, i.e. the IC-910H, you can fine tune your uplink
> frequency with the "Upl.Calibr." controls or the
> +/- keys for best audio pitch of your own signal and save
> the correction in Doppler.SQF for future program starts.
> That doesn't work with semi duplex radios, however,
> since you can't hear your downlink signal. But you can
> assume that a QSO partner will tune his radio for best audio
> pitch of your signal. That will possibly change also his
> uplink frequency. Then you should leave your uplink
> frequency unchanged and correct your downlink frequency for
> best audio of his signal via the "Downl. Corr."
> controls or the +/- keys. That's the reason why the +/-
> keys with satellite radios correct the uplink frequency but
> with semi duplex radios correct the downlink freqency.
>
> Recently I had several SSB QSOs via FO-29 and VO-52 with a
> single IC-706MKIIG. That worked very well.
>
> 73s, Erich, DK1TB
>
> ----- Original Message ----- From: "Bill
> Dzurilla" <billdz.geo@xxxxx.xxx>
> To: "Erich Eichmann"
> <erich.eichmann@xxxxxxxx.xx>
> Cc: <amsat-bb@xxxxx.xxx>
> Sent: Monday, April 13, 2009 4:18 AM
> Subject: [amsat-bb] Re: Sat Tracking and SatPC32 w/ICOM rig
> - CT-17 hardwaremodneeded
>
>
> >
> > Erich,
> >
> > Wow, thank you so much for the reply. This is
> wonderful news. I was pulling my hair our trying to figure
> out an easy way to do the hardware mod, and like an angel
> you give me a much easier solution. The patch works fine
> and I am in business.
> >
> > One question: In the last line of the patch
> description on your website, it says: "To correct the
> downlink frequency during a QSO use the "Downl.
> Corr." controls in menu CAT or the +/- keys of the
> numerical pad of the keyboard." I thought that the
> software automatically corrected the downlink frequency?
> Does this mean we should use the "Downl. Corr."
> controls or the +/- keys and not the VFO dial on the radio
> to QSY?
> >
> > 73, Bill NZ5N
> >
> >
> > --- On Sun, 4/12/09, Erich Eichmann
> <erich.eichmann@xxxxxxxx.xx> wrote:
> >
> >> From: Erich Eichmann
> <erich.eichmann@xxxxxxxx.xx>
> >> Subject: Re: [amsat-bb] Sat Tracking and SatPC32
> w/ICOM rig - CT-17 hardware modneeded
> >> To: billdz.geo@xxxxx.xxx
> >> Cc: amsat-bb@xxxxx.xxx
> >> Date: Sunday, April 12, 2009, 5:35 PM
> >> Hello Bill,
> >> the SatPC32.Exe and SatPC32ISS.Exe files that come
> with the
> >> 12.8 setup file
> >> require the hardware handshaking I have described
> in the
> >> Readme(Icom) text
> >> (the "normal" SatPC32 only with the semi
> duplex
> >> radios IC-706MKIIG and
> >> IC-7000 when used as single radio for satellite
> operation,
> >> SatPC32ISS with
> >> the IC-910H for "inband" operation in
> >> non-satellite mode).
> >>
> >> Meanwhile this hardware handshaking is no longer
> necessary.
> >> Some time ago I
> >> have uploaded patch files on my website
> www.dk1tb.de
> >> (English page
> >> "Downloads", sect. 5
> "Patches"). With
> >> the IC-910H and IC-7000 the PTT status
> >> is now checked via the software (CAT command hex.
> 1C. I
> >> didn't know that
> >> command when I released 12.8. My manual
> doesn't mention
> >> it).
> >> The IC-706MKGII doesn't provide such command,
> but Tony
> >> Monteiro, AA2TX,
> >> found a solution also for that radio and told me
> the trick
> >> - many thanks to
> >> him. So, also this radio does no longer require
> the extra
> >> line between the
> >> radio's
> >> ACC jacket and the PC's serial port.
> >>
> >> On my website I have described how to use the
> patch files.
> >>
> >> 73s, Erich, DK1TB
> >>
> >> ----- Original Message ----- From: "Bill
> Dzurilla"
> >> <billdz.geo@xxxxx.xxx>
> >> To: <amsat-bb@xxxxx.xxx>
> >> Sent: Sunday, April 12, 2009 9:05 PM
> >> Subject: [amsat-bb] Sat Tracking and SatPC32
> w/ICOM rig -
> >> CT-17 hardware
> >> modneeded
> >>
> >>
> >> >
> >> > This may be old news to many but perhaps will
> save a
> >> few hours of
> >> > frustration for newcomers.
> >> >
> >> > In my prior post about HRD Sat Tracking
> slowness with
> >> my Windows Vista
> >> > computer, I reported there that ST was
> working very
> >> slowly with my Lenovo
> >> > desktop running Windows Vista, but that it
> ran at
> >> normal speed with a
> >> > laptop running Windows XP. However, the
> frequencies
> >> were not tracking
> >> > properly -- the transmit frequency would
> >> "stick" as the receive frequency
> >> > on my IC-7000.
> >> >
> >> > It seems there is a hardware cause for this
> issue.
> >> After I gave up trying
> >> > to get HRD Sat Tracking to work with the
> laptop, I
> >> downloaded SatPC32,
> >> > another program that automatically sets
> transmit and
> >> receive frequency to
> >> > account for doppler. The same
> "sticking"
> >> problem occurred with that
> >> > program.
> >> >
> >> > The ReadMe(Icom) in SatPC32 provides what
> appears to
> >> be an explanation for
> >> > this issue:
> >> > **************************
> >> > With ICOM half duplex transceivers
> (IC-706MKIIG,
> >> IC-7000) hardware
> >> > handshaking must be installed to suspend
> computer
> >> control while the radio
> >> > is transmitting. Frequency changes are
> theoretically
> >> possible while the
> >> > radio
> >> > is transmitting, but frequency errors will
> occur,
> >> i.e., the frequencies
> >> > of VFO A and VFO B will be exchanged.
> >> >
> >> > Unfortunately there is no way to check the
> PTT state
> >> of the radio via
> >> > the CAT software. Therefore hardware
> handshaking is
> >> needed to prevent
> >> > writing to the radio while it is
> transmitting. On the
> >> radio side pin 7
> >> > of the ACC socket can be used for this
> purpose. The
> >> voltage at this pin
> >> > is approximately + 8.0 V while the radio is
> in RX
> >> mode. In TX mode the
> >> > voltage at pin 7 drops to 0.
> >> >
> >> > Pin 7 of the ACC socket must be connected
> with the CTS
> >> pin of the
> >> > serial port on the PC side (pin 8 of the
> 9-pin, pin 5
> >> of the 25-pin
> >> > RS232 cable connector). I have connected
> these pins
> >> via a diode
> >> > and a 5K resistor, see Acc_Com.jpg in this
> sub folder.
> >> >
> >> > IT GOES WITHOUT SAYING THAT EVERYONE INSTALLS
> THIS
> >> LINE AT HIS OWN RISK!
> >> >
> >> > When the radio pulls down the voltage at pin
> 7 to 0,
> >> it signals the PC
> >> > not to send data. As soon as the radio is
> back in RX
> >> mode the frequencies
> >> > are updated by the program.
> >> >
> >> > ATTENTION! There must be NO bridge between
> pins 7 and
> >> 8 of the 9-pin
> >> > (5 and 4 of the 25-pin) cable connector at
> the PC
> >> side! Otherwise the
> >> > voltage at Pin 8 (rsp.Pin 5) and therefore
> also at Pin
> >> 7 of the ACC
> >> > socket will be pulled down and the radio will
> be
> >> switched into transmit
> >> > mode. The sketches in the Icom sub folder
> provide this
> >> bridge. If it is
> >> > built in, please, remove it.
> >> >
> >> > The 25-pin Connector at the ICOM CT-17 also
> provides a
> >> bridge between
> >> > pins 4 and 5 and other pins. The CTS pin of
> the cable
> >> connector at the
> >> > PC side must be connected only to Pin 7 of
> the ACC
> >> socket.
> >> > *************************
> >> > Thus, as I appreciate this, a standard ICOM
> CT-17 CAT
> >> cable will not work
> >> > properly with SatPC32, and presumably not
> with HRD Sat
> >> Tracking either.
> >> >
> >> > Can anyone confirm this? Does anyone sell
> modified
> >> CT-17 cables that will
> >> > do the job?
> >> >
> >> > 73, Bill NZ5N
> >> >
> >> >
> >> >
> >> >
> _______________________________________________
> >> > 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-NA member? Join now to support the
> amateur satellite program!
> > Subscription settings:
> http://amsat.org/mailman/listinfo/amsat-bb
> >
------------------------------
Message: 8
Date: Tue, 14 Apr 2009 02:04:30 +0000 (UTC)
From: w7lrd@xxxxxxx.xxx
Subject: [amsat-bb] AO-51 L/U
To: amsat-bb@xxxxx.xxx
Message-ID:
<1358852785.1220471239674670108.JavaMail.root@xxxxxxx.xxxxxxxxxx.xx.xxxx
.xxxxxxx.xxx>
Content-Type: text/plain; charset=utf-8
Solid QSO with KC9ELU and heard KL7XJ but lost at LOS.
73 Bob W7LRD
------------------------------
Message: 9
Date: Tue, 14 Apr 2009 02:56:23 +0000 (UTC)
From: w7lrd@xxxxxxx.xxx
Subject: [amsat-bb] Re: Improved Ultra Small Linear Transponder video
To: William Leijenaar <pe1rah@xxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID:
<1177515950.1240591239677783970.JavaMail.root@xxxxxxx.xxxxxxxxxx.xx.xxxx
.xxxxxxx.xxx>
Content-Type: text/plain; charset=utf-8
Excellent presentation William! We should hang one of these on every
final
stage of every rocket (kind of kidding). The possibilities are very
thought
provoking.
73 Bob W7LRD
Seattle
----- Original Message -----
From: William Leijenaar
To: amsat-bb@xxxxx.xxx
Sent: Mon, 13 Apr 2009 20:52:40 +0000 (UTC)
Subject: [amsat-bb] Improved Ultra Small Linear Transponder video
Hi AMSATs,
I put some new video on youtube about my thiny linear transponder.
Its a slighty improved version, with better distortion behaviour and some
extra features, like a low voltage switch off circuit.
Some general details:
Its a Mode-UV transponder with 23dBm PEP output on 2m. It runs on 3.7Vdc,
power switches off when voltage drops below 3.5Vdc.
Bandwidth is 30kHz, and total weight is around 22 grams. It has an onboard
beacon that is fully programmable (message, frequency and power).
The RX and TX frequencies of the transponder are user programmable, and
all
oscillators are locked to an onboard TCXO.
This improved version has also the option for an external reference
oscillator
input, and has a tap at 70cm input and a tap on its 1st IF.
The taps are very usefull to interconnect to other transponders or
connection
to external telemetry modems.
The video can be found at:
http://www.youtube.com/watch?v=5j60SJroodg
I am presenter and filmer at the same time.
Please forgive me about the shivering image hihi...
More information will follow...
73 de PE1RAH
William Leijenaar
---
_________________________________________________________________
See all the ways you can stay connected to friends and family
http://www.microsoft.com/windows/windowslive/default.aspx
_______________________________________________
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: 10
Date: Tue, 14 Apr 2009 09:21:16 +0530
From: "Prathap Kumar" <vu2pop@xxxxx.xxx>
Subject: [amsat-bb] Hamsat Birthday Workhop Advance info
To: <amsat-bb@xxxxx.xxx>
Message-ID: <E99946B8001041CE9508BAA836A7977C@xxxxxxxxxxxxxx>
Content-Type: text/plain; format=flowed; charset="Windows-1252";
reply-type=response
Subject: Hamsat Birthday Workhop Advance info
Hi All
Hamsat 4th Birthday is coming up next month, 5 May 2009 and Hamsat has
been
the most popular Amateur Sat for beginners and veterans all over the
world.
Hamsat is very healthy and should serve the ham community for many more
years.
Amsat India is pleased to announce that we are conducting a Workshop to
coincide with the 4 th anniversary celebrations of the Hamsat.
( Note this is an advance infomation, complete programme schedule is
frozen
and will be announced shortly)
Date 10 May 2009
Starts at 8 AM with registration and breakfast
Morning sessions include various topics
Lunch
Afternoon session
Tea & close by 4 pm
Venue : Little Lilly English School, Vidyaranyapura, Bamgalore
Delegate fee Rs 100/-
Detailed programme schedule etc will be announced shortly on these email
groups, local nets etc.
You may also check our web page www.amsatindia.org
email : info@xxxxxxxxxx.xxx
We request all hams and wouldbe hams interested in Amateur Satellite
activity to kindly participate and make the event a grand success.
Looking forward to your participation.
Best 73
Pop
VU2POP
Secy Amsat India
------------------------------
Message: 11
Date: Tue, 14 Apr 2009 05:14:46 +0000 (UTC)
From: w7lrd@xxxxxxx.xxx
Subject: [amsat-bb] 1.2Ghz Helix ebay
To: amsat-bb@xxxxx.xxx
Message-ID:
<1411596445.1279961239686086598.JavaMail.root@xxxxxxx.xxxxxxxxxx.xx.xxxx
.xxxxxxx.xxx>
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Hello
I have a day left on this antenna on Ebay
http://cgi.ebay.com/1-2Ghz-Ham-Radio-Helical-
Antenna_W0QQitemZ110374480298QQcmdZViewItemQQptZCB_Radios?hash=item11037448
029
8&_trksid=p3286.c0.m14&_trkparms=72%3A1234%7C66%3A2%7C65%3A12%7C39%3A1%7C24
0%3
A1318%7C301%3A1%7C293%3A1%7C294%3A50
Works well on AO-51 L/U
73 Bob W7LRD
------------------------------
Message: 12
Date: Tue, 14 Apr 2009 08:31:21 +0200
From: "Erich Eichmann" <erich.eichmann@xxxxxxxx.xx>
Subject: [amsat-bb] Re: Sat Tracking and SatPC32 w/ICOM rig - CT-17
hardwaremodneeded
To: <billdz.geo@xxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <223FF856782E438BA74876AA03E427DB@xxxxxxxxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Hello Bill,
I use the Keyspan 4-Port USB-to-Serial adapter and a 1-Port Prolific
USB-to-Serial adapter and both work flawlessly under XP and Vista 32. For
my old Keyspan adapter I had to update the driver for Vista. I don't have
the original CT-17 but use a homebuild CAT interface that is similar to
the
CT-17 (see. Max232IF.PCX in the sub folder "Icom" in the SatPC32 program
folder). I have connected IC-706MKIIG simply parallel to IC-910H to the
interface.
Try the following: Plug in one of your USB-to-Serial adapters and with the
Windows System Panel (System - Device Manager) check what COM port number
the generated virtual COM port has. In the SatPC32 menu "Radio Setup"
choose
that port. Save the change and restart the program.
The "Downl. Corr." works like a RIT function but the correction value can
not be stored and must not be stored. There is a difference between the
uplink correction and the downlink correction: When you correct the uplink
(with a full duplex satellite radio) you can be sure to be on the correct
uplink frequency when you hear your own signal with the right audio pitch.
When you correct the downlink for best audio of the other station you
don't
know whether he is on the correct frequency. Therefore it would not be
good
to change your frequency data permanently.
73s, Erich, DK1TB
----- Original Message -----
From: "Bill Dzurilla" <billdz.geo@xxxxx.xxx>
To: "Erich Eichmann" <erich.eichmann@xxxxxxxx.xx>
Cc: <amsat-bb@xxxxx.xxx>
Sent: Tuesday, April 14, 2009 3:55 AM
Subject: Re: [amsat-bb] Re: Sat Tracking and SatPC32 w/ICOM rig - CT-17
hardwaremodneeded
>
> Hello Erich,
>
> Thank you again. Yes, I would like to work the linear satellites with a
> single semi-duplex radio, the IC-7000. I have been trying to drum up some
> local interest in the linear satellites, and the usual response is that it
> costs too much -- need 2 radios or one expensive rig like the TS-2000. I
> am trying to show them that one modest rig is enough, with the help of a
> nice tracking program like yours.
>
> Anyhow, SatPC32 is tracking the frequencies well now with the patch
> applied. The only small problem is that it seems to work only with a
> CT-17 cable attached directly to the computer's serial port. I tried 3
> different serial-USB adapters, but each time I got the message "Error
> reading COM device." The USB-Serial adapters work fine with Ham Radio
> Deluxe and other radio software, but it seems they do not work with
> SatPC32, at least not on my computer running Windows Vista.
>
> Thanks also for the explanation on the the "Downl. Corr."
> controls and the +/- keys for receive frequency correction. As I
> appreciate it, these are similar to the RIT function on the radio, but we
> can store the corrected offset permanently, correct?
>
> 73, Bill NZ5N
>
>
>
>
> --- On Mon, 4/13/09, Erich Eichmann <erich.eichmann@xxxxxxxx.xx> wrote:
>
>> From: Erich Eichmann <erich.eichmann@xxxxxxxx.xx>
>> Subject: Re: [amsat-bb] Re: Sat Tracking and SatPC32 w/ICOM rig - CT-17
>> hardwaremodneeded
>> To: billdz.geo@xxxxx.xxx
>> Cc: amsat-bb@xxxxx.xxx
>> Date: Monday, April 13, 2009, 2:19 AM
>> Hi Bill,
>> my remark in the last line of the patch description relates
>> to satellite operation with a single semi duplex radio, i.e.
>> the IC-706MKIIG.
>>
>> Of course, the software automatically corrects the uplink
>> and downlink frequencies for Doppler correction and for QSY
>> around the passband of SSB sats you can use the radio's
>> VFO knob also with these radios.
>>
>> The remark refers only to manual frequency
>> "corrections" with SSB sats. With satellite
>> radios, i.e. the IC-910H, you can fine tune your uplink
>> frequency with the "Upl.Calibr." controls or the
>> +/- keys for best audio pitch of your own signal and save
>> the correction in Doppler.SQF for future program starts.
>> That doesn't work with semi duplex radios, however,
>> since you can't hear your downlink signal. But you can
>> assume that a QSO partner will tune his radio for best audio
>> pitch of your signal. That will possibly change also his
>> uplink frequency. Then you should leave your uplink
>> frequency unchanged and correct your downlink frequency for
>> best audio of his signal via the "Downl. Corr."
>> controls or the +/- keys. That's the reason why the +/-
>> keys with satellite radios correct the uplink frequency but
>> with semi duplex radios correct the downlink freqency.
>>
>> Recently I had several SSB QSOs via FO-29 and VO-52 with a
>> single IC-706MKIIG. That worked very well.
>>
>> 73s, Erich, DK1TB
>>
>> ----- Original Message ----- From: "Bill
>> Dzurilla" <billdz.geo@xxxxx.xxx>
>> To: "Erich Eichmann"
>> <erich.eichmann@xxxxxxxx.xx>
>> Cc: <amsat-bb@xxxxx.xxx>
>> Sent: Monday, April 13, 2009 4:18 AM
>> Subject: [amsat-bb] Re: Sat Tracking and SatPC32 w/ICOM rig
>> - CT-17 hardwaremodneeded
>>
>>
>> >
>> > Erich,
>> >
>> > Wow, thank you so much for the reply. This is
>> wonderful news. I was pulling my hair our trying to figure
>> out an easy way to do the hardware mod, and like an angel
>> you give me a much easier solution. The patch works fine
>> and I am in business.
>> >
>> > One question: In the last line of the patch
>> description on your website, it says: "To correct the
>> downlink frequency during a QSO use the "Downl.
>> Corr." controls in menu CAT or the +/- keys of the
>> numerical pad of the keyboard." I thought that the
>> software automatically corrected the downlink frequency?
>> Does this mean we should use the "Downl. Corr."
>> controls or the +/- keys and not the VFO dial on the radio
>> to QSY?
>> >
>> > 73, Bill NZ5N
>> >
>> >
>> > --- On Sun, 4/12/09, Erich Eichmann
>> <erich.eichmann@xxxxxxxx.xx> wrote:
>> >
>> >> From: Erich Eichmann
>> <erich.eichmann@xxxxxxxx.xx>
>> >> Subject: Re: [amsat-bb] Sat Tracking and SatPC32
>> w/ICOM rig - CT-17 hardware modneeded
>> >> To: billdz.geo@xxxxx.xxx
>> >> Cc: amsat-bb@xxxxx.xxx
>> >> Date: Sunday, April 12, 2009, 5:35 PM
>> >> Hello Bill,
>> >> the SatPC32.Exe and SatPC32ISS.Exe files that come
>> with the
>> >> 12.8 setup file
>> >> require the hardware handshaking I have described
>> in the
>> >> Readme(Icom) text
>> >> (the "normal" SatPC32 only with the semi
>> duplex
>> >> radios IC-706MKIIG and
>> >> IC-7000 when used as single radio for satellite
>> operation,
>> >> SatPC32ISS with
>> >> the IC-910H for "inband" operation in
>> >> non-satellite mode).
>> >>
>> >> Meanwhile this hardware handshaking is no longer
>> necessary.
>> >> Some time ago I
>> >> have uploaded patch files on my website
>> www.dk1tb.de
>> >> (English page
>> >> "Downloads", sect. 5
>> "Patches"). With
>> >> the IC-910H and IC-7000 the PTT status
>> >> is now checked via the software (CAT command hex.
>> 1C. I
>> >> didn't know that
>> >> command when I released 12.8. My manual
>> doesn't mention
>> >> it).
>> >> The IC-706MKGII doesn't provide such command,
>> but Tony
>> >> Monteiro, AA2TX,
>> >> found a solution also for that radio and told me
>> the trick
>> >> - many thanks to
>> >> him. So, also this radio does no longer require
>> the extra
>> >> line between the
>> >> radio's
>> >> ACC jacket and the PC's serial port.
>> >>
>> >> On my website I have described how to use the
>> patch files.
>> >>
>> >> 73s, Erich, DK1TB
>> >>
>> >> ----- Original Message ----- From: "Bill
>> Dzurilla"
>> >> <billdz.geo@xxxxx.xxx>
>> >> To: <amsat-bb@xxxxx.xxx>
>> >> Sent: Sunday, April 12, 2009 9:05 PM
>> >> Subject: [amsat-bb] Sat Tracking and SatPC32
>> w/ICOM rig -
>> >> CT-17 hardware
>> >> modneeded
>> >>
>> >>
>> >> >
>> >> > This may be old news to many but perhaps will
>> save a
>> >> few hours of
>> >> > frustration for newcomers.
>> >> >
>> >> > In my prior post about HRD Sat Tracking
>> slowness with
>> >> my Windows Vista
>> >> > computer, I reported there that ST was
>> working very
>> >> slowly with my Lenovo
>> >> > desktop running Windows Vista, but that it
>> ran at
>> >> normal speed with a
>> >> > laptop running Windows XP. However, the
>> frequencies
>> >> were not tracking
>> >> > properly -- the transmit frequency would
>> >> "stick" as the receive frequency
>> >> > on my IC-7000.
>> >> >
>> >> > It seems there is a hardware cause for this
>> issue.
>> >> After I gave up trying
>> >> > to get HRD Sat Tracking to work with the
>> laptop, I
>> >> downloaded SatPC32,
>> >> > another program that automatically sets
>> transmit and
>> >> receive frequency to
>> >> > account for doppler. The same
>> "sticking"
>> >> problem occurred with that
>> >> > program.
>> >> >
>> >> > The ReadMe(Icom) in SatPC32 provides what
>> appears to
>> >> be an explanation for
>> >> > this issue:
>> >> > **************************
>> >> > With ICOM half duplex transceivers
>> (IC-706MKIIG,
>> >> IC-7000) hardware
>> >> > handshaking must be installed to suspend
>> computer
>> >> control while the radio
>> >> > is transmitting. Frequency changes are
>> theoretically
>> >> possible while the
>> >> > radio
>> >> > is transmitting, but frequency errors will
>> occur,
>> >> i.e., the frequencies
>> >> > of VFO A and VFO B will be exchanged.
>> >> >
>> >> > Unfortunately there is no way to check the
>> PTT state
>> >> of the radio via
>> >> > the CAT software. Therefore hardware
>> handshaking is
>> >> needed to prevent
>> >> > writing to the radio while it is
>> transmitting. On the
>> >> radio side pin 7
>> >> > of the ACC socket can be used for this
>> purpose. The
>> >> voltage at this pin
>> >> > is approximately + 8.0 V while the radio is
>> in RX
>> >> mode. In TX mode the
>> >> > voltage at pin 7 drops to 0.
>> >> >
>> >> > Pin 7 of the ACC socket must be connected
>> with the CTS
>> >> pin of the
>> >> > serial port on the PC side (pin 8 of the
>> 9-pin, pin 5
>> >> of the 25-pin
>> >> > RS232 cable connector). I have connected
>> these pins
>> >> via a diode
>> >> > and a 5K resistor, see Acc_Com.jpg in this
>> sub folder.
>> >> >
>> >> > IT GOES WITHOUT SAYING THAT EVERYONE INSTALLS
>> THIS
>> >> LINE AT HIS OWN RISK!
>> >> >
>> >> > When the radio pulls down the voltage at pin
>> 7 to 0,
>> >> it signals the PC
>> >> > not to send data. As soon as the radio is
>> back in RX
>> >> mode the frequencies
>> >> > are updated by the program.
>> >> >
>> >> > ATTENTION! There must be NO bridge between
>> pins 7 and
>> >> 8 of the 9-pin
>> >> > (5 and 4 of the 25-pin) cable connector at
>> the PC
>> >> side! Otherwise the
>> >> > voltage at Pin 8 (rsp.Pin 5) and therefore
>> also at Pin
>> >> 7 of the ACC
>> >> > socket will be pulled down and the radio will
>> be
>> >> switched into transmit
>> >> > mode. The sketches in the Icom sub folder
>> provide this
>> >> bridge. If it is
>> >> > built in, please, remove it.
>> >> >
>> >> > The 25-pin Connector at the ICOM CT-17 also
>> provides a
>> >> bridge between
>> >> > pins 4 and 5 and other pins. The CTS pin of
>> the cable
>> >> connector at the
>> >> > PC side must be connected only to Pin 7 of
>> the ACC
>> >> socket.
>> >> > *************************
>> >> > Thus, as I appreciate this, a standard ICOM
>> CT-17 CAT
>> >> cable will not work
>> >> > properly with SatPC32, and presumably not
>> with HRD Sat
>> >> Tracking either.
>> >> >
>> >> > Can anyone confirm this? Does anyone sell
>> modified
>> >> CT-17 cables that will
>> >> > do the job?
>> >> >
>> >> > 73, Bill NZ5N
>> >> >
>> >> >
>> >> >
>> >> >
>> _______________________________________________
>> >> > 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-NA member? Join now to support the
>> amateur satellite program!
>> > Subscription settings:
>> http://amsat.org/mailman/listinfo/amsat-bb
>> >
>
>
>
>
------------------------------
Message: 13
Date: Mon, 13 Apr 2009 22:33:00 -0800
From: Edward Cole <kl7uw@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: [Mw] Slightly OT: Mobile Installations
To: Jim Sanford <wb4gcs@xxxxx.xxx>, "'Microwave list'"
<microwave@xxxx.xxxxxxx.xxx>, "'Amsat - BBs'" <amsat-bb@xxxxx.xxx>
Message-ID: <200904140633.n3E6X0xx095234@xxxxxx.xxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
At 05:22 PM 4/13/2009, Jim Sanford wrote:
>All:
>The other day, somebody decided he needed to get thru an intersection
>ahead of me . . . . so, in search of a replacement chariot to support
>the mobile equipment. Considering:
>
> Toyota Highlander hybrid
> Saturn VUE Hybrid
>
>Have read the Consumer Reports rap on all.
>
>QUESTION: Does anybody have any experience or guidance regarding:
> -- problems installing HF/VHF/UHF radios in either vehicle
> -- problems with noise FROM the hybrid equipment
>
>I remember that some years ago, all the Japanese manufacturers would
>void your warranty if you installed two-way radio equipment. That
>appears to be no longer true, as long as "properly installed" (defined
>as adequately fused).
>
>All experiences welcome.
>
>Thanks for bandwidth.
>
>73,
>Jim
>wb4gcs@xxxxx.xxx
Jim,
Excellent question, considering the number of hybrid cars (and
all-electric cars soon to be offered in 2010). I wonder if the
electric motors have brushes and if they are RFI bypassed? I do not
have any info to provide, but certainly interested in what you find
out. I am watching the Chrystler Electric Town & Country van to be
offered in 2010 with 40-mpg performance. It runs with electric
motors 100% and has gasoline generator for extended distance driving.
73, Ed - KL7UW
------------------------------
_______________________________________________
Sent via amsat-bb@xxxxx.xxx. Opinions expressed are those of the author.
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