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CX2SA > SATDIG 01.11.17 07:25l 757 Lines 24120 Bytes #999 (0) @ WW
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Sent: 171101/0517Z @:CX2SA.SAL.URY.SOAM #:24981 [Salto] FBB7.00e $:AMSATBB12280
From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Re: M2 Driven element matching section (Richard Lawn)
2. CAS-4A (Rick Kowalewski)
3. Re: RS0ISS Digipeater (Andrew Rich)
4. Re: Building a new system (Andrew Rich)
5. SatPC32 (Joe Pereira)
6. Re: SatPC32 (Colin Hurst)
7. Image from K2MO recieved on Falconsat-3 (Roland Zurmely)
8. Re: SatPC32 (Andrew Rich)
9. Satreporter new features (Andrew Rich)
10. Patch for FoxTelem release 1.05 (Chris Thompson)
11. Re: SatPC32 (Joe Pereira)
12. Re: SatPC32 (Joe Pereira)
13. Re: C# DDE code (Pedro Converso)
14. Re: FO-29 transponder block diagram (Pedro Converso)
----------------------------------------------------------------------
Message: 1
Date: Mon, 30 Oct 2017 19:37:20 -0400
From: Richard Lawn <rjlawn@xxxxx.xxx>
To: Amsat BB <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] M2 Driven element matching section
Message-ID:
<CADQmrTETWRgVK6L=HGSpifCBfX6tHFpxmRWNv0OBoe874fBhbA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset="UTF-8"
Problem is solved! A friend and "elmer" who got me started in with sats
years ago has one he took off when he changed to polarity switching.
TNX to those who offered assistance.
73
Rick, W2JAZ
------------------------------
Message: 2
Date: Tue, 31 Oct 2017 08:58:09 +0800
From: Rick Kowalewski <rick@xxxxxx.xxx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] CAS-4A
Message-ID: <297e97a1-e6e2-b837-eb57-97601b98c3ff@xxxxxx.xxx>
Content-Type: text/plain; charset=utf-8; format=flowed
Hi All,
It seems the transponder on CAS-4A is down.? CW beacon is ok though.
73,
Rick VK6RK
------------------------------
Message: 3
Date: Tue, 31 Oct 2017 04:02:08 +1000
From: Andrew Rich <vk4tec@xxxxxxxxxxxxx.xxx>
To: Alex Weimer <kc7mg@xxxxx.xxx>
Cc: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] RS0ISS Digipeater
Message-ID: <1B40D209-9560-4168-9C98-3AC94B362688@xxxxxxxxxxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Doppler
> On 31 Oct 2017, at 1:56 am, Alex Weimer via AMSAT-BB <amsat-bb@xxxxx.xxx>
wrote:
>
> Thanks for the info on others also having problems with the ISS packet
digipeater. Thanks to K4KDR and KG4AKV. this confirms that I am not the only
one experiencing problems. I also noticed that once the sat is no longer
approaching that I cannot get into the digipeater and have trouble hearing
it ..Evidently it seems to be the ISS antenna is no longer accessible from
my location ?? Thought it was just Me !!! 73 JACK-KC7MG
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
expressed
> are solely those of the author, and do not reflect the official views of
AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 4
Date: Tue, 31 Oct 2017 04:02:53 +1000
From: Andrew Rich <vk4tec@xxxxxxxxxxxxx.xxx>
To: Roger <ai7rogerroger@xxxxx.xxx>
Cc: AMSAT-BB <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Building a new system
Message-ID: <70F121E0-1C29-4F1D-96BD-C9BBD0291EB9@xxxxxxxxxxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
SDR Sharp
Direwolf
Virtual Audio Cable
> On 31 Oct 2017, at 2:02 am, Roger <ai7rogerroger@xxxxx.xxx> wrote:
>
> I'm in the process of assembling a new system dedicated to sats and the
> like. I have a decent steerable array, quality preamps, dedicated
> computers, and radio with panadapter. I'm focusing on telemetry, decoding,
> and other interesting downlinks. I am literate in Satpc32 and have it
> running already. I'm soliciting information or ideas that I can incorporate
> that might benefit the AMSAT community, recommendations for specific
> satellite software, uploads, etc.
>
> Thanks for your time.
>
> 73, Roger
> W7TZ
> CN83ia
> Grid Busters
> w7tz.webs.com
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
expressed
> are solely those of the author, and do not reflect the official views of
AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 5
Date: Tue, 31 Oct 2017 20:00:53 +1030
From: Joe Pereira <joevk5ei@xxxxx.xxx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] SatPC32
Message-ID:
<CAEW3Gk+O0W+1VPJ=iLVOKw6+R21m9TZ9Y9Qdo+ST+3rgUD+o8w@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset="UTF-8"
Does anyone know if it is possible to output a serial port signal when a
satellite is in view.
I would like to switch an external relay circuit when a particular
satellite is in view.
Regards
Joe - VK5EI
------------------------------
Message: 6
Date: Tue, 31 Oct 2017 21:12:38 +1030
From: "Colin Hurst" <cjhurst@xxxxxxx.xxx.xx>
To: "'Joe Pereira'" <joevk5ei@xxxxx.xxx>, <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] SatPC32
Message-ID: <004201d35234$f8f502e0$eadf08a0$@xxx.xx>
Content-Type: text/plain; charset="us-ascii"
Joe,
I have often wondered what some of the option offered under Radio Setup in
SatPC32 mean.
Must admit I have not read the manual as I have not required anything out of
the ordinary.
Just looking at the Radio Setup there is a RTS+12V selection that may or may
not suit your requirements.
Erich DK1TB the author of Satpc32 does monitor this site and he will no
doubt offer a more positive answer.
73 Colin VK5HI.
-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Joe Pereira
Sent: Tuesday, 31 October 2017 20:01
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] SatPC32
Does anyone know if it is possible to output a serial port signal when a
satellite is in view.
I would like to switch an external relay circuit when a particular satellite
is in view.
Regards
Joe - VK5EI
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available to all
interested persons worldwide without requiring membership. Opinions
expressed are solely those of the author, and do not reflect the official
views of AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 7
Date: Tue, 31 Oct 2017 12:34:52 +0000 (UTC)
From: Roland Zurmely <py4zbz@xxxxx.xxx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Image from K2MO recieved on Falconsat-3
Message-ID: <1682365959.7410734.1509453292272@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
with WiSP, VSP3 and Soundmodem0.19:
<http://www.qsl.net/py4zbz/falconsat.htm#d>
73 de Roland PY4ZBZ
------------------------------
Message: 8
Date: Tue, 31 Oct 2017 19:35:41 +1000
From: Andrew Rich <vk4tec@xxxxxxxxx.xx.xxx>
To: Joe Pereira <joevk5ei@xxxxx.xxx>
Cc: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] SatPC32
Message-ID: <D99D94C6-C072-4AA2-B474-177F90C063C5@xxxxxxxxx.xx.xxx>
Content-Type: text/plain; charset=us-ascii
Many solutions I can help
I am going to use an arduino
Andrew
Sent from my iPhone
> On 31 Oct 2017, at 7:30 pm, Joe Pereira <joevk5ei@xxxxx.xxx> wrote:
>
> Does anyone know if it is possible to output a serial port signal when a
> satellite is in view.
>
> I would like to switch an external relay circuit when a particular
> satellite is in view.
>
> Regards
> Joe - VK5EI
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
expressed
> are solely those of the author, and do not reflect the official views of
AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 9
Date: Tue, 31 Oct 2017 22:53:02 +1000
From: Andrew Rich <vk4tec@xxxxxxxxx.xx.xxx>
To: AMSAT-BB <amsat-bb@xxxxx.xxx>
Cc: Australian APRS Users <ozaprs@xxxx.xxx.xx>
Subject: [amsat-bb] Satreporter new features
Message-ID: <F050C796-4CB1-4CB4-8B45-E2142AAD156B@xxxxxxxxx.xx.xxx>
Content-Type: text/plain; charset=utf-8
Hello
Sat reporter has some new features
?chat? so you can chat about if your hearing satellites and ?manual entry?
if you want to add something to the log
Enjoy
http://59.167.159.165/satreporter/index2.html
<http://59.167.159.165/satreporter/index2.html>
Andrew VK4TEC
------------------------------
Message: 10
Date: Tue, 31 Oct 2017 16:47:29 -0400
From: Chris Thompson <g0kla@xxxx.xxx>
To: "AMSAT-BB@xxxxx.xxxx <AMSAT-BB@xxxxx.xxx>
Subject: [amsat-bb] Patch for FoxTelem release 1.05
Message-ID:
<CAJOf0+vUpXuc0HRqqC9iMRgMXabDR3iSmYiFuuC6QbRdNVZs+w@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset="UTF-8"
My apologies, but I have had to release a quick update to FoxTelem. If you
already grabbed Version 1.05w in preparation for RadFxSat, then you should
apply the patch. This will upgrade you to 1.05x.
This patch fixes the following bugs with v1.05w or earlier 1.05 releases:
* When two spacecraft are tracked and "When Above Horizon" is set to start
and stop the decoder, the decoder NEVER starts.
* If the matched filter is selected for DUV then FoxTelem crashes
* When a spacecraft is being decoded, the position is not updated on the
screen
* When the decoders is automatically stopped/started, then the FunCube
Dongle becomes disconnected
To apply this patch simply copy the jar file into your Version 1.05
installation directory and overwrite the existing file.
If you are running FoxTelem Version 1.04f or earlier, you should install
the full
release for Version 1.05x
The files are here:
http://amsat.us/FoxTelem/windows/
http://amsat.us/FoxTelem/linux/
http://amsat.us/FoxTelem/mac/
?73
Chris
g0kla
ac2cz?
--
Chris E. Thompson
chrisethompson@xxxxx.xxx
g0kla@xxxx.xxx
------------------------------
Message: 11
Date: Wed, 1 Nov 2017 14:26:04 +1030
From: Joe Pereira <joevk5ei@xxxxx.xxx>
To: Andrew Rich <vk4tec@xxxxxxxxxxxxx.xxx>, "amsat-bb@xxxxx.xxxx
<amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] SatPC32
Message-ID:
<CAEW3GkJ44a6pFsPN1v5S1Dg95GogdeGMt-8Gn6azTH_4NAxGhg@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset="UTF-8"
Thanks for your suggestion on using the Arduino Andrew, but at this stage I
am exploring if the actual program can do this function. May look at that
option later if required.
Colin I think you may be onto it there, I know I spoke to some others about
doing this but just cannot recall it.
I think a change needs to be done in one of the configuration files.
I have tried activating the RTS+ 12V function and I do get a constant
output voltage on the serial pin, I need it to stay low then switch high
when sat in view.
We will keep exploring and thanks again.
JP
On Tue, Oct 31, 2017 at 9:26 PM, Andrew Rich <vk4tec@xxxxxxxxxxxxx.xxx>
wrote:
> Just use an arduino on a serial port
>
>
> > On 31 Oct 2017, at 8:42 pm, Colin Hurst <cjhurst@xxxxxxx.xxx.xx> wrote:
> >
> > Joe,
> > I have often wondered what some of the option offered under Radio Setup
> in
> > SatPC32 mean.
> > Must admit I have not read the manual as I have not required anything
> out of
> > the ordinary.
> > Just looking at the Radio Setup there is a RTS+12V selection that may or
> may
> > not suit your requirements.
> > Erich DK1TB the author of Satpc32 does monitor this site and he will no
> > doubt offer a more positive answer.
> > 73 Colin VK5HI.
> >
> > -----Original Message-----
> > From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Joe
> Pereira
> > Sent: Tuesday, 31 October 2017 20:01
> > To: amsat-bb@xxxxx.xxx
> > Subject: [amsat-bb] SatPC32
> >
> > Does anyone know if it is possible to output a serial port signal when a
> > satellite is in view.
> >
> > I would like to switch an external relay circuit when a particular
> satellite
> > is in view.
> >
> > Regards
> > Joe - VK5EI
> > _______________________________________________
> > Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all
> > interested persons worldwide without requiring membership. Opinions
> > expressed are solely those of the author, and do not reflect the official
> > views of AMSAT-NA.
> > Not an AMSAT-NA member? Join now to support the amateur satellite
> program!
> > Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
> >
> > _______________________________________________
> > Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> > to all interested persons worldwide without requiring membership.
> Opinions expressed
> > are solely those of the author, and do not reflect the official views of
> AMSAT-NA.
> > Not an AMSAT-NA member? Join now to support the amateur satellite
> program!
> > Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>
>
------------------------------
Message: 12
Date: Wed, 1 Nov 2017 14:42:42 +1030
From: Joe Pereira <joevk5ei@xxxxx.xxx>
To: Roger <ai7rogerroger@xxxxx.xxx>, "amsat-bb@xxxxx.xxxx
<amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] SatPC32
Message-ID:
<CAEW3Gk+zPVdbYdf+EPs7o3fmBLQwqnNLPoRX5oBj2oyZerVAfA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset="UTF-8"
Good suggestion Roger, will keep that one in mine.
My original plan was to build a timer circuit that would stay on for a few
minutes and use the voltage that activates the rotator motors as a trigger.
JP
On Wed, Nov 1, 2017 at 2:36 PM, Roger <ai7rogerroger@xxxxx.xxx> wrote:
> Joe,
> I was wondering if you could possibly use a vox circuit activated by the
> voice announcer which I believe, if I read things right, is activated once
> a bird is visible.
>
>
> 73, Roger
> W7TZ
> CN83ia
> Grid Busters
> w7tz.webs.com
>
> On Tue, Oct 31, 2017 at 8:56 PM, Joe Pereira <joevk5ei@xxxxx.xxx> wrote:
>
>> Thanks for your suggestion on using the Arduino Andrew, but at this stage
>> I
>> am exploring if the actual program can do this function. May look at that
>> option later if required.
>>
>> Colin I think you may be onto it there, I know I spoke to some others
>> about
>> doing this but just cannot recall it.
>>
>> I think a change needs to be done in one of the configuration files.
>>
>> I have tried activating the RTS+ 12V function and I do get a constant
>> output voltage on the serial pin, I need it to stay low then switch high
>> when sat in view.
>>
>> We will keep exploring and thanks again.
>>
>> JP
>>
>>
>> On Tue, Oct 31, 2017 at 9:26 PM, Andrew Rich <vk4tec@xxxxxxxxxxxxx.xxx>
>> wrote:
>>
>> > Just use an arduino on a serial port
>> >
>> >
>> > > On 31 Oct 2017, at 8:42 pm, Colin Hurst <cjhurst@xxxxxxx.xxx.xx>
>> wrote:
>> > >
>> > > Joe,
>> > > I have often wondered what some of the option offered under Radio
>> Setup
>> > in
>> > > SatPC32 mean.
>> > > Must admit I have not read the manual as I have not required anything
>> > out of
>> > > the ordinary.
>> > > Just looking at the Radio Setup there is a RTS+12V selection that may
>> or
>> > may
>> > > not suit your requirements.
>> > > Erich DK1TB the author of Satpc32 does monitor this site and he will
>> no
>> > > doubt offer a more positive answer.
>> > > 73 Colin VK5HI.
>> > >
>> > > -----Original Message-----
>> > > From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Joe
>> > Pereira
>> > > Sent: Tuesday, 31 October 2017 20:01
>> > > To: amsat-bb@xxxxx.xxx
>> > > Subject: [amsat-bb] SatPC32
>> > >
>> > > Does anyone know if it is possible to output a serial port signal
>> when a
>> > > satellite is in view.
>> > >
>> > > I would like to switch an external relay circuit when a particular
>> > satellite
>> > > is in view.
>> > >
>> > > Regards
>> > > Joe - VK5EI
>> > > _______________________________________________
>> > > Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>> > to all
>> > > interested persons worldwide without requiring membership. Opinions
>> > > expressed are solely those of the author, and do not reflect the
>> official
>> > > views of AMSAT-NA.
>> > > Not an AMSAT-NA member? Join now to support the amateur satellite
>> > program!
>> > > Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>> > >
>> > > _______________________________________________
>> > > Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>> > > to all interested persons worldwide without requiring membership.
>> > Opinions expressed
>> > > are solely those of the author, and do not reflect the official views
>> of
>> > AMSAT-NA.
>> > > Not an AMSAT-NA member? Join now to support the amateur satellite
>> > program!
>> > > Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>> >
>> >
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>> to all interested persons worldwide without requiring membership.
>> Opinions expressed
>> are solely those of the author, and do not reflect the official views of
>> AMSAT-NA.
>> Not an AMSAT-NA member? Join now to support the amateur satellite program!
>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>
>
>
------------------------------
Message: 13
Date: Wed, 1 Nov 2017 01:35:51 -0300
From: Pedro Converso <pconver@xxxxx.xxx>
To: Richard Allen <rca@xxxxxxx.xxx>
Cc: David W0DHB <dave@xxxxx.xxx>, AMSAT Mailing List
<amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] C# DDE code
Message-ID:
<CANTZqK=GHdG_VaOavXLbQ20gDuzr6zg9GL8p+wWGror3U4jS4Q@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset="UTF-8"
Hello Richard,
Perhaps you can try the visual basic sources of wispdde made by CX1DD
available at:
http://ok1dx.cz/constructions/avrot/wispdde/wispdde.zip
It's well commented, I compiled under vbasic 2008 and it works.
I do use wispdde along with http://amsat.org.ar/pass.exe
73, LU7ABF, Pedro.
On Sun, Oct 29, 2017 at 10:18 PM, Richard Allen <rca@xxxxxxx.xxx> wrote:
> Thanks, Dave.
>
> What version of Visual Studio and Windoze?
>
> Richard
>
> > On Oct 29, 2017, at 3:54 PM, David W0DHB <dave@xxxxx.xxx> wrote:
> >
> > What Devin said..
> >
> > I've been using NDDE for several years with VB.net and C# programs
> >
> > Dave W0DHB
> >
> > -----Original Message-----
> > From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Devin L.
> > Ganger
> > Sent: Friday, October 27, 2017 15:14
> > To: richard allen <rca@xxxxxxx.xxx>; AMSAT Mailing List <
> amsat-bb@xxxxx.xxx>
> > Subject: Re: [amsat-bb] C# DDE code
> >
> > Are you aware of the open source class library called NDde?
> >
> > http://www.codeplex.com/ndde
> >
> >
> > --
> > Devin L. Ganger (WA7DLG)
> > email: devin@xxxxxxxx.xxx
> > web: Devin on Earth
> >
> > -----Original Message-----
> > From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of richard
> > allen
> > Sent: Friday, October 27, 2017 1:40 PM
> > To: AMSAT Mailing List <amsat-bb@xxxxx.xxx>
> > Cc: rca@xxxxxxx.xxx
> > Subject: [amsat-bb] C# DDE code
> >
> > Microsoft seems to be getting rid of DDE support. Does anyone have some
> C#
> > or VB2017 DDE client code that can be built under Visual Studio 2017?
> >
> > Thanks,
> >
> > Richard W5SXD
> > _______________________________________________
> > Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all
> > interested persons worldwide without requiring membership. Opinions
> > expressed are solely those of the author, and do not reflect the official
> > views of AMSAT-NA.
> > Not an AMSAT-NA member? Join now to support the amateur satellite
> program!
> > Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
> > _______________________________________________
> > Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all
> > interested persons worldwide without requiring membership. Opinions
> > expressed are solely those of the author, and do not reflect the official
> > views of AMSAT-NA.
> > Not an AMSAT-NA member? Join now to support the amateur satellite
> program!
> > Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
> >
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
> expressed
> are solely those of the author, and do not reflect the official views of
> AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 14
Date: Wed, 1 Nov 2017 02:08:54 -0300
From: Pedro Converso <pconver@xxxxx.xxx>
To: Dani EA4GPZ <daniel@xxxxxxxx.xxx>
Cc: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] FO-29 transponder block diagram
Message-ID:
<CANTZqKkdaYUXKb7+74djng25CWGwbG9Uck3gzzhwhuRhWfdeww@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset="UTF-8"
Hello Dany,
Try perhaps to check if your results match others tracking applications.
I do use http://amsat.org.ar/pass or http://amsat.org.ar/pass.exe with
wispdde driver or HDSDR.
Using last 2 combinations, I follow LO-19 constant carrier receiving CW and
software follows right on frequency, using either an FT-736 or FT-897.
To calculate Xmt & Rcv Dopplers, I take into account instant satellite
velocity related to user ground station, always using the latest TLEs.
We can share formulas to calculate both Dopplers if that helps.
Best 73, LU7ABF, Pedro
On Mon, Oct 30, 2017 at 6:53 PM, Dani EA4GPZ <daniel@xxxxxxxx.xxx> wrote:
> Hi all,
>
> A few days ago I have transmitted and recorded a (low-power) FT8 signal
> through the FO-29 linear transponder to test some Doppler correction
> algorithms I'm developing (see
> http://destevez.net/2017/10/wsjt-x-and-linear-satellites-part-ii/)
>
> After Doppler correction, I'm left with a linear frequency drift both in
> my downlink signal and in the satellite CW beacon. However, the drift
> rate of my signal and the beacon are different. Specifically, my signal
> drifts 1.26 times faster than the beacon. I suspect that this drift is
> due to one of the local oscillators in FO-29.
>
> To understand this better, I need to look at a block diagram of the
> FO-29 linear transponder. The best I've found is this:
>
> http://www.jarl.org/English/5_Fuji/systeme.gif
>
> However, I need something similar to this:
>
> https://funcubetest2.files.wordpress.com/2010/11/funcube_
> rf_board_block_diagramv2-1_pa3weg_open-1.pdf
>
> Since I need to see the frequencies of all the local oscillators
> involved in the transponder and CW beacon.
>
> Is there a more detailed block diagram for FO-29 or does anyone know
> something about this information?
>
> 73,
>
> Dani EA4GPZ.
> _______________________________________________
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> to all interested persons worldwide without requiring membership. Opinions
> expressed
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> AMSAT-NA.
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>
------------------------------
Subject: Digest Footer
_______________________________________________
Sent via amsat-bb@xxxxx.xxx.
AMSAT-NA makes this open forum available to all interested persons worldwide
without requiring membership. Opinions expressed
are solely those of the author, and do not reflect the official views of
AMSAT-NA.
Not an AMSAT member? Join now to support the amateur satellite program!
http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
End of AMSAT-BB Digest, Vol 12, Issue 280
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