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CX2SA > SATDIG 01.02.19 00:44l 797 Lines 30024 Bytes #999 (0) @ WW
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Sent: 190131/2236Z @:CX2SA.SAL.URY.SOAM #:64484 [Salto] FBB7.00e $:AMSATBB1435
From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Re: Ham Radio Deluxe & satellite related topics (Ted Krempa)
2. Re: Ham Radio Deluxe & satellite related topics
(Michael Carper, Ph.D.)
3. Re: Ham Radio Deluxe & satellite related topics (Roy Dean)
4. Re: Ham Radio Deluxe & satellite related topics
(Stephen E. Belter)
5. Re: Ham Radio Deluxe & satellite related topics (Erich Eichmann)
6. FT-217 Battery Replacemnt? (Robert Bruninga)
7. Re: FT-217 Battery Replacemnt? (Paul Stoetzer)
8. Re: SatPC32, Countdown, & "zu viele Satelliten!"
(Peter Goodhall (2M0SQL))
9. Re: Satellite Packet ? (Gustavo Carpignano)
10. CAS4A & XW Numbers (Les Rayburn)
11. Re: CAS4A & XW Numbers (Paul Stoetzer)
12. Re: XW-2A and Other Roads Less Travelled (Hasan al-Basri)
----------------------------------------------------------------------
Message: 1
Date: Wed, 30 Jan 2019 15:28:39 -0800
From: "Ted Krempa" <k7trkradio@???????.???>
To: "'Michael Carper, Ph.D.'" <mike@??????.???>, "AMSAT BB"
<amsat-bb@?????.???>
Subject: Re: [amsat-bb] Ham Radio Deluxe & satellite related topics
Message-ID: <002f01d4b8f3$885bfa80$9913ef80$@???????.???>
Content-Type: text/plain; charset="us-ascii"
Hi Mike, I would suggest that you download and install SatPC32 (see AMSAT
Website) and run these programs side by side (it's possible to have both
windows open). Then compare the displayed data for el, az, altitude etc. I
have done this test more times than I can count. The data never matches. The
maps look quite close as to location on the map, but the numbers never get
close. Maybe this is an invalid test protocol, I don't know, but the issue
may be more for the linear sats as I have always been able to use HRD for
the LEOs.
I would be interested in comments. Is it possible that HRD and SatPC32 use
different ways to do the job? (maybe that is why I can't find an .sqf file
in HRD)...don't know...just need answers as HRD's graphics and ease of
operation are way ahead of SatPC32
Hoping for the best
73, Ted, K7TRK
-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces@?????.???? On Behalf Of Michael
Carper, Ph.D. via AMSAT-BB
Sent: Tuesday, January 29, 2019 10:38 PM
To: Suryono Adisoemarta via AMSAT-BB
Subject: [amsat-bb] Ham Radio Deluxe & satellite related topics
Folks,
As I've said before, we're absolutely committed to resolving all defects in
the software and making it the best product available for satellite
operators.
I just began testing our new beta (6.5.0.188) with our Rotor Control and
Satellite Tracking applications. We have just made some changes to these
apps and will continue until all reported issues are resolved. We believe
that the majority of the 33 Rotor Control issues will be resolved by these
changes... which also corrects a number of items in the Satellite Tracking
app.
My test with a Portable Rotation AZ/EL controller (PR12SAT) and FT-991A
worked as expected (with a few known issues we're working on).
The rotor correctly tracked the satellite and the rig's downlink was
correctly controlled. There's still an issue I want resolved related to
the Doppler frequency correction on the uplink.
I have also compared the path of several key satellites in Satellite
Tracking against the AMSAT tracking website. I don't see any differences
in tracking the satellite. (I have found that the term "tracking" can
refer to updating the rig's frequency in our Rig Control or Satellite
Tracking app, it can refer to the Rotor Control tracking a satellite pass,
and it can refer to the software's ability to track the path of a satellite
during its pass.)
I'm looking for feedback. I've heard of "tracking" problems... but I'm not
seeing these problems. I'm happy to listen to and test any reports or
explanations you have for this tracking problem.
Mike, WA9PIE
_______________________________________________
Sent via AMSAT-BB@?????.???. 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: 2
Date: Wed, 30 Jan 2019 21:23:22 -0600
From: "Michael Carper, Ph.D." <mike@??????.???>
To: Ted Krempa <k7trkradio@???????.???>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Ham Radio Deluxe & satellite related topics
Message-ID:
<CAKJep-CfzdXfc+H-0DU23kvNsbJ=EJjKxr-3ckqZKAdU5ShY3Q@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Ted,
Good question. I'm not sure if they use the same protocol/calculations or
not (I'm not a developer; but I welcome anyone who wants to put. I really
want to make sure that our positioning is dead-on with what AMSAT would
show. My most recent test seems to indicate that it does... but we've got
some validation to do.
Candidly... once I jumped into this personally (recently), I observed
something that is clearly wrong. No one had mentioned this to me
previously... so I documented it.
The downlink frequency seems to be accurate. That is - as the sat is
headed towards you from AOS, the rig is tuned to an RX frequency higher
than the TX frequency of the sat and it's decreasing until TCA (where,
momentarily the rig is tuned exactly to the sat's TX/downlink frequency)...
then begins to decrease in frequency as the sat moves away towards LOS.
All that makes sense to me.
But the uplink frequency has the opposite behavior and is clearly not
correct. That is - as the sat is headed towards you from AOS, the rig is
tuned to a TX frequency LOWER than the TX frequency of the sat and it's
increasing until TCA (where, momentarily the rig is tuned exactly to the
sat's RX/upling frequency)... then begins to increase in frequency as the
sat moves away towards LOS. None of that makes sense to me.
As our developer says, "we can fix anything we can reproduce." So it's
been documented.
So, to be honest, we're beginning with some fundamental things. We believe
we have fixed the majority of the rotor control issues. We have a time
calculation issue (related to DST that may have some timing impact; we'll
see). And then we're going to tackle the rig control issues. I've got an
ICOM IC-910H. We've got an FT-991, FT-991A, and a Kenwood TS-2000. While
this isn't every single rig that's sat capable, we should be able to shake
out the root cause of - what is exactly - 30 open defects.
For context, we've closed almost 500 defects since May of 2017. Many of
these could have existed when we obtained the source code in 2011
(unsure). But the rotor and satellite apps are among a small number of top
priorities for us now.
Mike, WA9PIE
On Wed, Jan 30, 2019 at 5:28 PM Ted Krempa <k7trkradio@???????.???> wrote:
> Hi Mike, I would suggest that you download and install SatPC32 (see AMSAT
> Website) and run these programs side by side (it's possible to have both
> windows open). Then compare the displayed data for el, az, altitude etc. I
> have done this test more times than I can count. The data never matches.
> The
> maps look quite close as to location on the map, but the numbers never get
> close. Maybe this is an invalid test protocol, I don't know, but the issue
> may be more for the linear sats as I have always been able to use HRD for
> the LEOs.
>
> I would be interested in comments. Is it possible that HRD and SatPC32 use
> different ways to do the job? (maybe that is why I can't find an .sqf file
> in HRD)...don't know...just need answers as HRD's graphics and ease of
> operation are way ahead of SatPC32
>
> Hoping for the best
> 73, Ted, K7TRK
>
> -----Original Message-----
> From: AMSAT-BB [mailto:amsat-bb-bounces@?????.???? On Behalf Of Michael
> Carper, Ph.D. via AMSAT-BB
> Sent: Tuesday, January 29, 2019 10:38 PM
> To: Suryono Adisoemarta via AMSAT-BB
> Subject: [amsat-bb] Ham Radio Deluxe & satellite related topics
>
> Folks,
>
> As I've said before, we're absolutely committed to resolving all defects in
> the software and making it the best product available for satellite
> operators.
>
> I just began testing our new beta (6.5.0.188) with our Rotor Control and
> Satellite Tracking applications. We have just made some changes to these
> apps and will continue until all reported issues are resolved. We believe
> that the majority of the 33 Rotor Control issues will be resolved by these
> changes... which also corrects a number of items in the Satellite Tracking
> app.
>
> My test with a Portable Rotation AZ/EL controller (PR12SAT) and FT-991A
> worked as expected (with a few known issues we're working on).
>
> The rotor correctly tracked the satellite and the rig's downlink was
> correctly controlled. There's still an issue I want resolved related to
> the Doppler frequency correction on the uplink.
>
> I have also compared the path of several key satellites in Satellite
> Tracking against the AMSAT tracking website. I don't see any differences
> in tracking the satellite. (I have found that the term "tracking" can
> refer to updating the rig's frequency in our Rig Control or Satellite
> Tracking app, it can refer to the Rotor Control tracking a satellite pass,
> and it can refer to the software's ability to track the path of a satellite
> during its pass.)
>
> I'm looking for feedback. I've heard of "tracking" problems... but I'm not
> seeing these problems. I'm happy to listen to and test any reports or
> explanations you have for this tracking problem.
>
> Mike, WA9PIE
> _______________________________________________
> Sent via AMSAT-BB@?????.???. 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: 3
Date: Thu, 31 Jan 2019 07:20:25 -0500
From: Roy Dean <royldean@?????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] Ham Radio Deluxe & satellite related topics
Message-ID:
<CADGPg2uDEuRHiFDKHhnph4=x+akujtKt+97c8ksURKOAJqBfdQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
The below sounds correct to me. The speed of the object traveling toward
you makes up for the lower frequency from terrestrial origin.
--Roy
K3RLD
> But the uplink frequency has the opposite behavior and is clearly not
> correct. That is - as the sat is headed towards you from AOS, the rig is
> tuned to a TX frequency LOWER than the TX frequency of the sat and it's
> increasing until TCA (where, momentarily the rig is tuned exactly to the
> sat's RX/upling frequency)... then begins to increase in frequency as the
> sat moves away towards LOS. None of that makes sense to me.
------------------------------
Message: 4
Date: Thu, 31 Jan 2019 13:17:39 +0000
From: "Stephen E. Belter" <seb@??????.???>
To: Roy Dean <royldean@?????.???>
Cc: "amsat-bb@?????.???? <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Ham Radio Deluxe & satellite related topics
Message-ID: <E89E9DCE-CDEC-40AC-B5C1-DA7DC109D12F@??????.???>
Content-Type: text/plain; charset="us-ascii"
Mike,
Roy is correct. The uplink frequency used by your transmitter *should* be
lower at AOS and increase during the pass to LOS.
73, Steve N9IP
--
Steve Belter, seb@??????.???
> On Jan 31, 2019, at 7:21 AM, Roy Dean <royldean@?????.???> wrote:
>
> The below sounds correct to me. The speed of the object traveling toward
> you makes up for the lower frequency from terrestrial origin.
>
> --Roy
> K3RLD
>
>
>> But the uplink frequency has the opposite behavior and is clearly not
>> correct. That is - as the sat is headed towards you from AOS, the rig is
>> tuned to a TX frequency LOWER than the TX frequency of the sat and it's
>> increasing until TCA (where, momentarily the rig is tuned exactly to the
>> sat's RX/upling frequency)... then begins to increase in frequency as the
>> sat moves away towards LOS. None of that makes sense to me.
> _______________________________________________
> Sent via AMSAT-BB@?????.???. 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: Thu, 31 Jan 2019 14:42:52 +0100
From: Erich Eichmann <erich.eichmann@????????.??>
To: "Michael Carper, Ph.D." <mike@??????.???>, AMSAT-BB@?????.???
Subject: Re: [amsat-bb] Ham Radio Deluxe & satellite related topics
Message-ID: <fe22b490-1a4d-f96f-f54c-3587c0e2cd65@????????.??>
Content-Type: text/plain; charset=utf-8; format=flowed
Hi,
while? the satellite is approaching? the radios uplink frequency has to
be LOWER than the satellites RX frequency to arrive? - enhanced? by the
Doppler effect - on that frequency. The SatPC32 frequency window doesn't
show the Doppler shift but the correction values, which have to have
always opposite signs for downlink and uplink.
73s, Erich, DK1TB
------------------------------
Message: 6
Date: Thu, 31 Jan 2019 08:51:36 -0500
From: Robert Bruninga <bruninga@????.???>
To: amsat bb <amsat-bb@?????.???>
Subject: [amsat-bb] FT-217 Battery Replacemnt?
Message-ID: <570fcc9cd630deb3fa5804b934b44e2a@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Anyone ever replaced the 9.6v NiMh battery in an FT-817 with three Lithium
cells?
I know this is not a good thing to do, but the 9.6v internal charger
should cut out at 10.4v and three Lithiums don't reach full charge until
12.6v so I don't think they will ever get overcharged.
Stopping at 10.4v, they would only get to 3.5v per cell... Hummh... not
very much charge at all on a Lithium.
But at least I'll get through this upcoming class with it.
Bob
------------------------------
Message: 7
Date: Thu, 31 Jan 2019 08:54:34 -0500
From: Paul Stoetzer <n8hm@????.???>
To: Robert Bruninga <bruninga@????.???>
Cc: amsat bb <amsat-bb@?????.???>
Subject: Re: [amsat-bb] FT-217 Battery Replacemnt?
Message-ID:
<CABzOSOrtXk+vvUVoJVyeDn25+kSGiKKr7nv6S+ZhZYG2zKq+pg@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
I've used these in my FT-817s for years. They work great.
https://www.amazon.com/WINDCAMP-3000mah-Polymer-Lithium-Battery/dp/B01LW3X1EB
73,
Paul, N8HM
On Thu, Jan 31, 2019 at 8:51 AM Robert Bruninga <bruninga@????.???> wrote:
>
> Anyone ever replaced the 9.6v NiMh battery in an FT-817 with three Lithium
> cells?
>
> I know this is not a good thing to do, but the 9.6v internal charger
> should cut out at 10.4v and three Lithiums don't reach full charge until
> 12.6v so I don't think they will ever get overcharged.
> Stopping at 10.4v, they would only get to 3.5v per cell... Hummh... not
> very much charge at all on a Lithium.
>
> But at least I'll get through this upcoming class with it.
> Bob
> _______________________________________________
> Sent via AMSAT-BB@?????.???. 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: 8
Date: Thu, 31 Jan 2019 14:24:46 +0000
From: "Peter Goodhall (2M0SQL)" <peter@????????.??.??>
To: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] SatPC32, Countdown, & "zu viele Satelliten!"
Message-ID:
<CAFvUaiqxqEHHrFCxw18EHB+yOyr4ip1EqQEubD1ymfPJFef-6Q@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Hopefully, Erich releases this version soon to everyone, saving him
being bombarded with requests for the beta version! :)
Peter, 2M0SQL
On Wed, 30 Jan 2019 at 23:04, Stefan Wagener <wageners@?????.???> wrote:
>
> You're welcome!
>
> Stefan
>
> On Wed, Jan 30, 2019 at 4:00 PM Les Rayburn <les@????????????.???> wrote:
>
> > Stefan,
> >
> > That sounds perfect. I?ll reach out to him.
> >
> > I?m in your debt sir.
> >
> >
> > Les Rayburn, N1LF
> > Maylene, AL
> > EM63nf
> > AMSAT #38965, ARRL Life Member, CVHS Life Member, SVHF Member
> >
> >
> >
> > On Jan 30, 2019, at 3:29 PM, Stefan Wagener <wageners@?????.???> wrote:
> >
> > Please contact Erich. He has a beta release that doubles the # of
> > satellites in the group, in the main application window and in the
schedule
> > window. It's working very well for me.
> >
> > 73, Stefan VE4NSA
> >
> >
> > On Wed, Jan 30, 2019, 14:12 Les Rayburn <les@????????????.??? wrote:
> >
> >> I?m sure this has been covered in the past, but it?s kicking my butt.
> >>
> >> With the proliferation of LEO satellites in recent years, amateurs are
> >> fortunate to have a lot of birds available for use. Like many hams, I use
> >> SatPC32 to control my rig, and track upcoming passes.
> >>
> >> Their sub-program, Countdown does a good job of listing upcoming passes
> >> and their AOS/LOS times. However, it?s limited to 12 satellites. If you
try
> >> to add additional birds, you get the dreaded ?zu viele Satelliten!?
> >> message. Translation: Too Many Satellites.
> >>
> >> I?m sure there must be a work-around that involves creating multiple
> >> groups, or something, but I haven?t been able to crack this.
> >>
> >> Does anyone else have a good method?
> >>
> >> I know Ham Radio Deluxe has been working to improve their satellite
> >> program. Is anyone using this currently? Is it a better option?
> >>
> >>
> >> Les Rayburn, N1LF
> >> Maylene, AL
> >> EM63nf
> >> AMSAT #38965, ARRL Life Member, CVHS Life Member, SVHF Member
> >>
> >>
> >>
> >> _______________________________________________
> >> Sent via AMSAT-BB@?????.???. 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@?????.???. 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: Thu, 31 Jan 2019 14:41:07 +0000 (UTC)
From: Gustavo Carpignano <lw2dtz@?????.???.??>
To: 'Pedro Converso' <pconver@?????.???>, Mike Rupprecht
<mail@??????????????.??>
Cc: 'AMSAT BB' <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Satellite Packet ?
Message-ID: <1233588874.816998.1548945667837@????.?????.???>
Content-Type: text/plain; charset=UTF-8
Hi,
Unfortunately no frequency due the station is in automatic mode and not at
my presence.The report is of? the screen and no file record by Online Tlm
forwarder. A good idea is that Online tlm forwarder could record a file in
kiss when a "Unidentific Orbital Objet" is? ?decoded but is not registre in
the list.
Regards.
Gustavo,LW2DTZ
El martes, 29 de enero de 2019 3:26:33 p. m. GMT-3, Mike Rupprecht
<mail@??????????????.??> escribi?:
No Pedro,
REAKTOR doesn't have a AX.25 header.
@???????? do you have a frequency for us?
73 Mike
DK3WN
-----Urspr?ngliche Nachricht-----
Von: AMSAT-BB [mailto:amsat-bb-bounces@?????.???? Im Auftrag von Pedro
Converso
Gesendet: 29 January 2019 18:53
An: Gustavo Carpignano
Cc: AMSAT BB
Betreff: Re: [amsat-bb] Satellite Packet ?
Hello Gustavo,
Could had been Reaktor Obj.43743 that uses Posix if heard on 437.775 MHz.
Passes/freq/modes on http://amsat.org.ar/pass?satx=reaktor
73, lu7abf, Pedro
On 1/29/19, Gustavo Carpignano via AMSAT-BB <amsat-bb@?????.???> wrote:
> Hi,
> I received the following packet radio header id and destination
> callsigns in kiss mode
> POSIX-1>DSTCAL-2
> in UHF sat segment. Someone knows whay satellite originates it ?
>
> Regards.
> Gustavo, LW2DTZ
> _______________________________________________
> Sent via AMSAT-BB@?????.???. 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@?????.???. 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: 10
Date: Thu, 31 Jan 2019 15:25:17 -0600
From: Les Rayburn <les@????????????.???>
To: AMSAT BB <amsat-bb@?????.???>
Subject: [amsat-bb] CAS4A & XW Numbers
Message-ID: <BFC69103-E45B-427A-817D-A91EB17BF01C@????????????.???>
Content-Type: text/plain; charset=utf-8
Pardon the flood of newbie questions.
I?m trying to add CAS-4A and CAS-4B to my list of active satellites in
SatPC32. When I add them from the NASA.ALL keeps, the file doesn?t include
any frequency information for the CAT radio control.
Understand that satellites are renamed (sometimes) when they achieve
operational status. For example, XW-2A used to be called CAS-3A.
What am I doing wrong? Are both CAS-4A and CAS-4B active and available for
amateur use?
73,
Les Rayburn, N1LF
Maylene, AL
EM63nf
AMSAT #38965, ARRL Life Member, CVHS Life Member, SVHF Member
------------------------------
Message: 11
Date: Thu, 31 Jan 2019 16:29:16 -0500
From: Paul Stoetzer <n8hm@????.???>
To: Les Rayburn <les@????????????.???>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] CAS4A & XW Numbers
Message-ID:
<CABzOSOqiq65JWZrGyr7ewH==7KRa6WKy=e845WwN6mHoAsvxnw@????.?????.???>
Content-Type: text/plain; charset="UTF-8"
Les,
The keps files do not include any frequency information. You will need
to manually add the satellties to your Doppler.sqf file. AMSAT-UK
maintains a good database of Doppler.sqf files and entries here
https://amsat-uk.org/satellites/satpc32-doppler-sqf-file/
CAS-4A and CAS-4B are active and available for amateur use. For
whatever reason, they were not given the "Hope" prefix (Xiwang / XW)
as other Chinese satellites have been, nor were OSCAR numbers
requested, so they continue to be referred to as CAS-4A and CAS-4B.
73,
Paul, N8HM
On Thu, Jan 31, 2019 at 4:25 PM Les Rayburn <les@????????????.???> wrote:
>
> Pardon the flood of newbie questions.
>
> I?m trying to add CAS-4A and CAS-4B to my list of active satellites in
SatPC32. When I add them from the NASA.ALL keeps, the file doesn?t include
any frequency information for the CAT radio control.
>
> Understand that satellites are renamed (sometimes) when they achieve
operational status. For example, XW-2A used to be called CAS-3A.
>
> What am I doing wrong? Are both CAS-4A and CAS-4B active and available for
amateur use?
>
> 73,
>
> Les Rayburn, N1LF
> Maylene, AL
> EM63nf
> AMSAT #38965, ARRL Life Member, CVHS Life Member, SVHF Member
>
>
>
> _______________________________________________
> Sent via AMSAT-BB@?????.???. 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: Thu, 31 Jan 2019 16:30:19 -0600
From: Hasan al-Basri <hbasri.schiers6@?????.???>
To: Les Rayburn <les@????????????.???>
Cc: AMSAT-BB <amsat-bb@?????.???>, Work-Sat@???????????.???
Subject: Re: [amsat-bb] XW-2A and Other Roads Less Travelled
Message-ID:
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KB7IJ and I are very active on XW-2A, 2B, 2C, as well as CAS-4A and CAS-4B.
We operate SSB usually a bit below the "standard" center band pair because
we experience some pretty strong WIFI/router interference in the "normal"
area.
What we have found is there are a LOT of people who don't listen anywhere
but their favorite watering hole. The primary reason is they are using
conventional radios on the downlink. This is a significant handicap. IN In
fact, one might as well be operating while wearing a blind fold.
Anyone who is serious about sat ops should invest in an SDR and use it to
receive. You can see the entire passband all the time. I can't tell you how
many times I'v e heard people say there is no one on the birds...when in
fact, people are there calling CQ. Or, like me, reciting az and el,
polarity and signal strength (which I am recording with the SDR software,
btw).
If you get an SDR and run the SDRC v3.0.x software, you will find full sat
capability, including the ability to control an external radio for uplink.
Automatic doppler, everything you could want, pass prediction, real time
AZ/EL map display, etc.
If you have never run an SDR for sat work with good software (which is
free), you have no idea how unaware you are of what is happening on and
around these birds.
There is a LOT going on that is being missed by being chained to old
technology.
...and I'm not denying that empty passes exist. They do. I have called CQ
for entire passes. Once I notice the lack of activity. I turn on the audio
recording (which is nothing but the press of a button in the software) and
collect data on the effects of polarization, obstructions, vegetative
losses, etc. It is quite easy, just recite the current conditions and and
let the software do the work.
Having operated with standard high quality radios back in the days of
AO-6/7/8/10/13 and 40, I can simply state, there is NO comparison in
operating capabilities and convenience between traditional radios for
satellite downlinks vs. SDRs.
Check them out, they are not expensive. You will never go back once you
have used an SDR with decent software for your satellite downlink. Seeing
IS believing!
73, N0AN
Hasan
On Tue, Jan 29, 2019 at 10:35 PM Les Rayburn <les@????????????.???> wrote:
> I?m a bit of a nomad, and have always enjoyed taking the roads less
> travelled. That applies to my hobby as well?those of us who work VHF are a
> fairly rare bunch. Those who work satellites; not often spotted in the
> wild.
>
> But apparently, rarer still are those who enjoy making contacts on
> satellites that are not AO-91, A0-92, SO-50, and FO-29.
>
> Working from home today, so I got on nearly every satellite pass over the
> United States. Alternated between calling CQ and searching for others to
> work.
>
> The results of working eight different passes? Four contacts for the day.
> Two on SO-50, one each on AO-91 and FO-29.
>
> Called CQ on XW-2A at dinner time. High elevation pass. Good strong
> downlink the entire pass from horizon to horizon. Nada?
>
> It did net me an SWL report from Mark Gluch, KB3CI who heard me loud and
> clean in EN82 near Detroit. He doesn?t have the transmit side working yet
> for the linear birds, but will soon.
>
> Ditto on AO-7, a whole pass on FO-29 this morning, and at least three of
> the XW birds.
>
> Last weekend, I listed to the L band activity on AO-91 and there was a ton
> more activity there than I heard today. (I?m working on getting the 1296
> Yagi up so I can join you folks.)
>
> We?ve got a sky full of great satellites that perform well. Let?s use
> them.
>
> 73,
>
> Les Rayburn, N1LF
> 121 Mayfair Park
> Maylene, AL 35114
> EM63nf
>
> Member WTFDA, IRCA, NRC. Former CPC Chairman for NRC & IRCA.
>
> Elad FDM-S2 SDR, AirSpy SDR2, SDRPlay RSP-2 Pro, Sony XDR-F1HD [XDR Guy
> Modified], Dennon TU-1500RD, Sangean HDT-1X, Ray Dees RDS Decoders, Korner
> 9.2 Antenna, FM-6 Antenna, Kitz Technologies KT-501 Pre-amps, Quantum
> Phaser, Wellbrook ALA1530 Loop, Wellbrook Flag, Clifton Labs Active Whip.
>
> ?Nothing but blues and Elvis, and somebody else?s favorite song??
>
> _______________________________________________
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> expressed
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End of AMSAT-BB Digest, Vol 14, Issue 35
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