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CX2SA  > SATDIG   12.05.19 11:17l 1107 Lines 37278 Bytes #999 (0) @ WW
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Sent: 190430/1928Z @:CX2SA.SAL.URY.SOAM #:4731 [Salto] FBB7.00e $:AMSATBB14172
From: CX2SA@CX2SA.SAL.URY.SOAM
To  : SATDIG@WW

Today's Topics:

   1. Re: Linear Transponder Up and Down link frequency	calculator
      (Vinny Stipo)
   2. Re: Fox -1B / AO-91 in trouble? (PY5LF)
   3. Re: Fox -1B / AO-91 in trouble? (Eric Skoog)
   4. Re: Fox -1B / AO-91 in trouble? (John Brier)
   5. Re: iOS app Maidenhead (Patrick STODDARD (WD9EWK/VA7EWK))
   6. Re: Fox -1B / AO-91 in trouble? (Burns Fisher (AMSAT))
   7. Re: iOS app Maidenhead (Paul Stoetzer)
   8. Re: Fox -1B / AO-91 in trouble? (skristof@???????.????
   9. Re: Linear Transponder Up and Down link frequency	calculator
      (Mark D. Johns)
  10. Re: Linear Transponder Up and Down link frequency	calculator
      (John Brier)


----------------------------------------------------------------------

Message: 1
Date: Tue, 30 Apr 2019 07:24:07 -0700
From: Vinny Stipo <v@???????.???>
To: Hasan al-Basri <hbasri.schiers6@?????.???>
Cc: AMSAT-BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Linear Transponder Up and Down link frequency
calculator
Message-ID:
<CAGaUwA4tq9qBoU7GXbqOak8VdxQBszQ=Tiz++jJJBmrCL6gjOA@????.?????.???>
Content-Type: text/plain; charset="UTF-8"

Am I missing something? Why not just put this info in a online
worksheet/excel, rather than compile a program with no source code?

-Vinny KM2W

On Tue, Apr 30, 2019 at 7:01 AM Hasan al-Basri via AMSAT-BB <
amsat-bb@?????.???> wrote:

> Absolutelyl, no worries about doppler. The only one of concern was the 1200
> Hz error and I think that was a typo. I'll look for the update. Tnx so
> much, it is a wonderful asset to sat ops. 73, N0AN
> Hasan
>
>
> On Mon, Apr 29, 2019 at 11:56 PM Wendy and Terry Osborne <
> wandtosborne@?????.???> wrote:
>
> > Hi Hassan,
> >
> > Just added CAS-4A to the list.
> > I was working off the AMSAT-NA Laminated frequency chart (April 2018).
> > Should have spotted it.
> >
> > I have also tweaked the frequency on CAS-4B to track with your
> > measurements.
> > Use the same link for the updated program.
> >
> > I?m tempted to add a few hundred Hertz to the conversion numbers to get
> > them spot on but the error
> > is probably less than the doppler correction required.
> >
> > Trying to correct for doppler would require a built in tracking program
> > and then you might as well use SatPC32.
> >
> > 73,
> > Terry ZL2BAC
> >
> > *From:* Hasan al-Basri <hbasri.schiers6@?????.???>
> > *Sent:* Sunday, April 28, 2019 11:48 PM
> > *To:* Wendy and Terry Osborne <wandtosborne@?????.???>
> > *Cc:* AMSAT-BB <amsat-bb@?????.???>
> > *Subject:* Re: [amsat-bb] Linear Transponder Up and Down link frequency
> > calculator
> >
> > Very nice Terry, but you forgot CAS-4a  :-)
> >
> > I work with pre-defined sat pairs to avoid Wifi spikes. Here are the
> > results for some of the common birds using our downlink and your uplink
> > (predicted) vs. what our uplinks really are for perfect audio.
> >
> > CAS-4B 145.918  435.287  Actual: 435.285.900
> > XW-2A  145.672   435.043  : 435.042.600
> > XW-2B  145.733   435.107  : 435.106.800
> > XW-2C  145.798   435.167  : 435.166.800
> >
> > Very solid agreement, tnx so much. It would have saved  us a lot of time
> > setting up the first time, had we had you nice program.
> >
> > Please add CAS-4A when you get time.
> >
> > 73, N0AN
> >
> >
> > Hasan
> >
> >
> > On Sat, Apr 27, 2019 at 8:41 PM Wendy and Terry Osborne via AMSAT-BB <
> > amsat-bb@?????.???> wrote:
> >
> >> Hi Folks,
> >>
> >> With the number of Linear Transponder Satellites that are operational or
> >> in the pipeline,
> >> I thought a simple program to convert uplink to downlink frequencies was
> >> worth writing.
> >> I?ve written one for Windows.
> >> You can find it here:
> >>
> https://www.dropbox.com/sh/4o375h6bygjxkzr/AABi9Ck9Wc6ODrhXwIVHxI-_a?dl=0
> >> I?ve put the exe file and the same file in zip format.
> >> I have put all the current birds plus the ones that have launches
> pending.
> >> Just select the satellite of interest from the ?Satellite? drop down
> >> menu,
> >> put your frequency into the text box and hit the Up or Dn calculate
> >> button.
> >>
> >> Let me know if you think this is useful.
> >>
> >> 73,
> >> Terry Osborne ZL2BAC
> >> _______________________________________________
> >> 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: https://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: https://www.amsat.org/mailman/listinfo/amsat-bb
>


------------------------------

Message: 2
Date: Tue, 30 Apr 2019 13:06:53 -0300
From: PY5LF <py5lf@?????????????.???.??>
To: Scott <scott23192@?????.???>
Cc: AMSAT-BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Fox -1B / AO-91 in trouble?
Message-ID:
<CAAy53m6hMpAaxX4rjHdVgsiagxOroAWCxrc35UNCmL5iRJuU_A@????.?????.???>
Content-Type: text/plain; charset="UTF-8"

Same heard here now .
73

<https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign
=sig-email&utm_content=webmail>
Livre
de v?rus. www.avast.com
<https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign
=sig-email&utm_content=webmail>.
<#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>

Em ter, 30 de abr de 2019 ?s 02:29, Scott via AMSAT-BB <amsat-bb@?????.???>
escreveu:

> Unfortunately, same thing observed 0519 UTC off U.S. East Coast, Hans.
>
> Screen shot on my tweet at:
> https://twitter.com/scott23192/status/1123096104365625344
>
> -Scott,  K4KDR
>
> ===================
>
> On Tue, Apr 30, 2019 at 1:06 AM Hans BX2ABT via AMSAT-BB <
> amsat-bb@?????.???>
> wrote:
>
> > Just had a good pass from Fox-1B, but it seems the bird is in trouble.
> > No telemetry and no voices heard, just weird noises. I put a screen shot
> > on my website: BX2ABT.com. Let's just hope a reset will cure this bird.
> > 73 de Hans (BX2ABT)
> >
> _______________________________________________
> 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: https://www.amsat.org/mailman/listinfo/amsat-bb
>


------------------------------

Message: 3
Date: Tue, 30 Apr 2019 13:55:54 -0400
From: Eric Skoog <eric.n.skoog@?????.???>
To: wb1fj@??????.??
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Fox -1B / AO-91 in trouble?
Message-ID: <FDDB11AB-5F33-467A-8D59-AD4D3A1B2A53@?????.???>
Content-Type: text/plain;	charset=utf-8

Interesting ......was this the first time we?ve experienced this ?feature?
on AO-91?   Or anything else similar?

Eric (K1TVV)

Sent from my iPhone

> On Apr 30, 2019, at 1:29 PM, AI9IN via AMSAT-BB <amsat-bb@?????.???> wrote:
>
> I warned you it might be me. For some reason I used the time for the
> pass coming up on Friday. Maybe I need a nap.
>
> Steve AI9IN
>
>> On 2019-04-30 1:25 pm, Paul Stoetzer wrote:
>>
>> What time did you have for the pass?
>>
>> The last pass started around 12:13 pm EDT. Next pass is around 1:48 pm.
>>
>> 73,
>>
>> Paul, N8HM
>>
>>> On Tue, Apr 30, 2019 at 1:20 PM AI9IN via AMSAT-BB <amsat-bb@?????.???>
wrote:
>>>
>>> Nothing heard from AO-91 on pass over EM79 a few minutes ago. Sometimes
>>> it's me, so if somebody else was able to transmit through the bird, go
>>> with that.
>>>
>>> Steve AI9IN
>>>
>>> On 2019-04-30 1:02 pm, Burns Fisher via AMSAT-BB wrote:
>>>
>>>>> I cycled the power to the IHU and it popped right back the way it should
>>>>> be.
>>>>> Should be fine now, but reports for the next day or two will be
>>>>> appreciated.
>>>>>
>>>>> 73, Drew KO4MA
>>>>> AMSAT VP Operations
>>>>>
>>>>> -Looks much better all right.  If cycling the  IHU fixed it, that does
imply
>>>>> it was an IHU problem, although we could have guessed that the tx was
ok,
>>>>> since we were getting telemetry ok.  Since the IHU cycled ok, that
implies
>>>>> that it was not the program memory.  Given that we got telemetry in idle
>>>>> and for a few seconds after the transponder went off, that means a lot
of
>>>>> stuff was ok.  I'm guessing that probably some bits got flipped in the
data
>>>>> for the software high pass filter, which would explain why there was
trash
>>>>> in what should have been the telemetry audio frequency band (below
200Hz).
>>>>>
>>>>> 73,
>>>>>
>>>>> Burns WB1FJ
>>>>> AMSAT Fox Software
>>>>>
>>>>> On Tue, Apr 30, 2019 at 12:17 PM Andrew Glasbrenner via AMSAT-BB <
>>>>> amsat-bb@?????.???> wrote:
>>> _______________________________________________
>>> 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: https://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: https://www.amsat.org/mailman/listinfo/amsat-bb


------------------------------

Message: 4
Date: Tue, 30 Apr 2019 14:07:13 -0400
From: John Brier <johnbrier@?????.???>
To: Anthony Di Iorio <anthony@???????.??>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Fox -1B / AO-91 in trouble?
Message-ID:
<CALn0fKOwVet5TyODLa2qOjq=o49TKRE4htvN304CaHjqzGqjtQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"

It looks like this email just came through but it was sent many hours ago.

On Tue, Apr 30, 2019 at 2:04 PM Anthony Di Iorio via AMSAT-BB <
amsat-bb@?????.???> wrote:

> I'm seeing the same signal here. The beacon sounds fine, but no audio on
> the transponder https://imgur.com/a/UvWxaA2
>
> Anthony VE2HEW
>
> On Tue, Apr 30, 2019 at 1:29 AM Scott via AMSAT-BB <amsat-bb@?????.???>
> wrote:
>
> > Unfortunately, same thing observed 0519 UTC off U.S. East Coast, Hans.
> >
> > Screen shot on my tweet at:
> > https://twitter.com/scott23192/status/1123096104365625344
> >
> > -Scott,  K4KDR
> >
> > ===================
> >
> > On Tue, Apr 30, 2019 at 1:06 AM Hans BX2ABT via AMSAT-BB <
> > amsat-bb@?????.???>
> > wrote:
> >
> > > Just had a good pass from Fox-1B, but it seems the bird is in trouble.
> > > No telemetry and no voices heard, just weird noises. I put a screen
> shot
> > > on my website: BX2ABT.com. Let's just hope a reset will cure this bird.
> > > 73 de Hans (BX2ABT)
> > >
> > _______________________________________________
> > 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: https://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: https://www.amsat.org/mailman/listinfo/amsat-bb
>


------------------------------

Message: 5
Date: Tue, 30 Apr 2019 18:43:21 +0000
From: "Patrick STODDARD (WD9EWK/VA7EWK)" <amsat-bb@??????.???>
To: Douglas Tabor <dtabor52@?????.???>, AMSAT <amsat-bb@?????.???>
Subject: Re: [amsat-bb] iOS app Maidenhead
Message-ID:
<CAN6TEUcK3qZnRaqtCKBWN07ZPokSyTCn73h8fJ=+__qPCWvucA@????.?????.???>
Content-Type: text/plain; charset="UTF-8"

Hi Doug!

I trust the latitude/longitude readings from my GPS receiver
(or GPS in phones or radios), but do not rely on those for
county, state/province, or international boundaries. For these
boundaries, I rely on markers/signs. For example, the boundary
between the states of Arizona and Utah was supposed to follow
37 degres North exactly - but it was surveyed long before we
had GPS. At some points, that boundary is just north of 37
degrees North (DMx6/DMx7 grid boundary). Near Lake Powell, the
grid boundary falls in Arizona. Along US-160 or US-191 further
east, the grid boundary falls in Utah. This is even more
pronounced along portions of the USA/Canada border, especially
the section that is supposed to follow 49 degrees North from
Washington state to Minnesota's Northwest Angle.

73!





Patrick WD9EWK/VA7EWK
http://www.wd9ewk.net/
Twitter: @?????? or http://twitter.com/WD9EWK





On Tue, Apr 30, 2019 at 5:59 PM Douglas Tabor via AMSAT-BB <
amsat-bb@?????.???> wrote:

> How much trust does one have WRT state boundaries and what Maidenhead
> displays? The borders are often not straight nor do they always align with
> Lat/Lon ... looking at Wyoming, we seem to have 8 more grids than our
> rectangular shape would have one believe (some from Colorado and others
> from Montana).
>
> Anyone else see this or similar?
>
> Thanks and 73,
>
> Douglas Tabor,  N6UA
>
>


------------------------------

Message: 6
Date: Tue, 30 Apr 2019 14:49:08 -0400
From: "Burns Fisher (AMSAT)" <wb1fj@??????.??>
To: Eric Skoog <eric.n.skoog@?????.???>
Cc: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Fox -1B / AO-91 in trouble?
Message-ID:
<CAPDDZouL2dyGaZZDr-AxZNA3h2dOzpeQLt2uzTDnNOi8U4d3fg@????.?????.???>
Content-Type: text/plain; charset="UTF-8"

First time I remember with THESE symptoms.  I suspect most times that
memory gets corrupted by a stray electron or proton, it's just as likely to
cause a reset as anything, but this time whatever happened was pretty easy
to isolate.  But the answer is (luckily) usually the same:  Power Cycle.
73,

Burns Fisher, WB1FJ
*AMSAT(R) Flight Software*



On Tue, Apr 30, 2019 at 1:55 PM Eric Skoog <eric.n.skoog@?????.???> wrote:

> Interesting ......was this the first time we?ve experienced this ?feature?
> on AO-91?   Or anything else similar?
>
> Eric (K1TVV)
>
> Sent from my iPhone
>
> > On Apr 30, 2019, at 1:29 PM, AI9IN via AMSAT-BB <amsat-bb@?????.???>
> wrote:
> >
> > I warned you it might be me. For some reason I used the time for the
> > pass coming up on Friday. Maybe I need a nap.
> >
> > Steve AI9IN
> >
> >> On 2019-04-30 1:25 pm, Paul Stoetzer wrote:
> >>
> >> What time did you have for the pass?
> >>
> >> The last pass started around 12:13 pm EDT. Next pass is around 1:48 pm.
> >>
> >> 73,
> >>
> >> Paul, N8HM
> >>
> >>> On Tue, Apr 30, 2019 at 1:20 PM AI9IN via AMSAT-BB <amsat-bb@?????.???>
> wrote:
> >>>
> >>> Nothing heard from AO-91 on pass over EM79 a few minutes ago. Sometimes
> >>> it's me, so if somebody else was able to transmit through the bird, go
> >>> with that.
> >>>
> >>> Steve AI9IN
> >>>
> >>> On 2019-04-30 1:02 pm, Burns Fisher via AMSAT-BB wrote:
> >>>
> >>>>> I cycled the power to the IHU and it popped right back the way it
> should
> >>>>> be.
> >>>>> Should be fine now, but reports for the next day or two will be
> >>>>> appreciated.
> >>>>>
> >>>>> 73, Drew KO4MA
> >>>>> AMSAT VP Operations
> >>>>>
> >>>>> -Looks much better all right.  If cycling the  IHU fixed it, that
> does imply
> >>>>> it was an IHU problem, although we could have guessed that the tx
> was ok,
> >>>>> since we were getting telemetry ok.  Since the IHU cycled ok, that
> implies
> >>>>> that it was not the program memory.  Given that we got telemetry in
> idle
> >>>>> and for a few seconds after the transponder went off, that means a
> lot of
> >>>>> stuff was ok.  I'm guessing that probably some bits got flipped in
> the data
> >>>>> for the software high pass filter, which would explain why there was
> trash
> >>>>> in what should have been the telemetry audio frequency band (below
> 200Hz).
> >>>>>
> >>>>> 73,
> >>>>>
> >>>>> Burns WB1FJ
> >>>>> AMSAT Fox Software
> >>>>>
> >>>>> On Tue, Apr 30, 2019 at 12:17 PM Andrew Glasbrenner via AMSAT-BB <
> >>>>> amsat-bb@?????.???> wrote:
> >>> _______________________________________________
> >>> 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: https://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: https://www.amsat.org/mailman/listinfo/amsat-bb
>


------------------------------

Message: 7
Date: Tue, 30 Apr 2019 14:49:34 -0400
From: Paul Stoetzer <n8hm@????.???>
To: amsat-bb@??????.???
Cc: Douglas Tabor <dtabor52@?????.???>, AMSAT <amsat-bb@?????.???>
Subject: Re: [amsat-bb] iOS app Maidenhead
Message-ID:
<CABzOSOqZgoRAzJ6Ab4BFsROBtGGNtr4xg8Sq-rx5D4oaMCy8Ew@????.?????.???>
Content-Type: text/plain; charset="UTF-8"

And then you have the western states whose borders are determined based on
"degrees west of Washington" which will not fall on grid lines because the
Washington meridian, at the Old Naval Observatory, is about 3 minutes west
of 77 degrees west.

73,

Paul, N8HM

On Tue, Apr 30, 2019 at 2:44 PM Patrick STODDARD (WD9EWK/VA7EWK) via
AMSAT-BB <amsat-bb@?????.???> wrote:

> Hi Doug!
>
> I trust the latitude/longitude readings from my GPS receiver
> (or GPS in phones or radios), but do not rely on those for
> county, state/province, or international boundaries. For these
> boundaries, I rely on markers/signs. For example, the boundary
> between the states of Arizona and Utah was supposed to follow
> 37 degres North exactly - but it was surveyed long before we
> had GPS. At some points, that boundary is just north of 37
> degrees North (DMx6/DMx7 grid boundary). Near Lake Powell, the
> grid boundary falls in Arizona. Along US-160 or US-191 further
> east, the grid boundary falls in Utah. This is even more
> pronounced along portions of the USA/Canada border, especially
> the section that is supposed to follow 49 degrees North from
> Washington state to Minnesota's Northwest Angle.
>
> 73!
>
>
>
>
>
> Patrick WD9EWK/VA7EWK
> http://www.wd9ewk.net/
> Twitter: @?????? or http://twitter.com/WD9EWK
>
>
>

>
>
> On Tue, Apr 30, 2019 at 5:59 PM Douglas Tabor via AMSAT-BB <
> amsat-bb@?????.???> wrote:
>
> > How much trust does one have WRT state boundaries and what Maidenhead
> > displays? The borders are often not straight nor do they always align
> with
> > Lat/Lon ... looking at Wyoming, we seem to have 8 more grids than our
> > rectangular shape would have one believe (some from Colorado and others
> > from Montana).
> >
> > Anyone else see this or similar?
> >
> > Thanks and 73,
> >
> > Douglas Tabor,  N6UA
> >
> >
> _______________________________________________
> 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: https://www.amsat.org/mailman/listinfo/amsat-bb
>


------------------------------

Message: 8
Date: Tue, 30 Apr 2019 15:00:57 -0400
From: skristof@???????.???
To: AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Fox -1B / AO-91 in trouble?
Message-ID: <e0e49979c5a34bf26cb2e547b7217c54@???????.???>
Content-Type: text/plain; charset=US-ASCII

For me, unfortunately, no.

Steve AI9IN

On 2019-04-30 1:55 pm, Eric Skoog via AMSAT-BB wrote:

> Interesting ......was this the first time we've experienced this "feature"
on AO-91?   Or anything else similar?
>
> Eric (K1TVV)
>
> Sent from my iPhone
>
> On Apr 30, 2019, at 1:29 PM, AI9IN via AMSAT-BB <amsat-bb@?????.???> wrote:
>
> I warned you it might be me. For some reason I used the time for the
> pass coming up on Friday. Maybe I need a nap.
>
> Steve AI9IN
>
> On 2019-04-30 1:25 pm, Paul Stoetzer wrote:
>
> What time did you have for the pass?
>
> The last pass started around 12:13 pm EDT. Next pass is around 1:48 pm.
>
> 73,
>
> Paul, N8HM
>
> On Tue, Apr 30, 2019 at 1:20 PM AI9IN via AMSAT-BB <amsat-bb@?????.???>
wrote:
>
> Nothing heard from AO-91 on pass over EM79 a few minutes ago. Sometimes
> it's me, so if somebody else was able to transmit through the bird, go
> with that.
>
> Steve AI9IN
>
> On 2019-04-30 1:02 pm, Burns Fisher via AMSAT-BB wrote:
>
> I cycled the power to the IHU and it popped right back the way it should
> be.
> Should be fine now, but reports for the next day or two will be
> appreciated.
>
> 73, Drew KO4MA
> AMSAT VP Operations
>
> -Looks much better all right.  If cycling the  IHU fixed it, that does imply
> it was an IHU problem, although we could have guessed that the tx was ok,
> since we were getting telemetry ok.  Since the IHU cycled ok, that implies
> that it was not the program memory.  Given that we got telemetry in idle
> and for a few seconds after the transponder went off, that means a lot of
> stuff was ok.  I'm guessing that probably some bits got flipped in the data
> for the software high pass filter, which would explain why there was trash
> in what should have been the telemetry audio frequency band (below 200Hz).
>
> 73,
>
> Burns WB1FJ
> AMSAT Fox Software
>
> On Tue, Apr 30, 2019 at 12:17 PM Andrew Glasbrenner via AMSAT-BB <
> amsat-bb@?????.???> wrote:
 _______________________________________________
Sent via AMSAT-BB@?????.???. AMSAT-NA makes this open forum available
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AMSAT-NA.
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Opinions expressed
are solely those of the author, and do not reflect the official views of
AMSAT-NA.
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_______________________________________________
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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!
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------------------------------

Message: 9
Date: Tue, 30 Apr 2019 13:58:45 -0500
From: "Mark D. Johns" <mjohns+K0JM@??????.???>
To: Vinny Stipo <v@???????.???>
Cc: AMSAT-BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Linear Transponder Up and Down link frequency
calculator
Message-ID:
<CAHKCqnAGM0HRFDR=Fr2Gv5xZmq806esbHMgfZjT_OZf-de0xrg@????.?????.???>
Content-Type: text/plain; charset="UTF-8"

Perhaps I?m missing something, too. Why not use a full-featured tracking
program, such as SatPC32, that has all of this already included?

On Tue, Apr 30, 2019 at 13:06 Vinny Stipo via AMSAT-BB <amsat-bb@?????.???>
wrote:

> Am I missing something? Why not just put this info in a online
> worksheet/excel, rather than compile a program with no source code?
>
> -Vinny KM2W
>
> On Tue, Apr 30, 2019 at 7:01 AM Hasan al-Basri via AMSAT-BB <
> amsat-bb@?????.???> wrote:
>
> > Absolutelyl, no worries about doppler. The only one of concern was the
> 1200
> > Hz error and I think that was a typo. I'll look for the update. Tnx so
> > much, it is a wonderful asset to sat ops. 73, N0AN
> > Hasan
> >
> >
> > On Mon, Apr 29, 2019 at 11:56 PM Wendy and Terry Osborne <
> > wandtosborne@?????.???> wrote:
> >
> > > Hi Hassan,
> > >
> > > Just added CAS-4A to the list.
> > > I was working off the AMSAT-NA Laminated frequency chart (April 2018).
> > > Should have spotted it.
> > >
> > > I have also tweaked the frequency on CAS-4B to track with your
> > > measurements.
> > > Use the same link for the updated program.
> > >
> > > I?m tempted to add a few hundred Hertz to the conversion numbers to get
> > > them spot on but the error
> > > is probably less than the doppler correction required.
> > >
> > > Trying to correct for doppler would require a built in tracking program
> > > and then you might as well use SatPC32.
> > >
> > > 73,
> > > Terry ZL2BAC
> > >
> > > *From:* Hasan al-Basri <hbasri.schiers6@?????.???>
> > > *Sent:* Sunday, April 28, 2019 11:48 PM
> > > *To:* Wendy and Terry Osborne <wandtosborne@?????.???>
> > > *Cc:* AMSAT-BB <amsat-bb@?????.???>
> > > *Subject:* Re: [amsat-bb] Linear Transponder Up and Down link frequency
> > > calculator
> > >
> > > Very nice Terry, but you forgot CAS-4a  :-)
> > >
> > > I work with pre-defined sat pairs to avoid Wifi spikes. Here are the
> > > results for some of the common birds using our downlink and your uplink
> > > (predicted) vs. what our uplinks really are for perfect audio.
> > >
> > > CAS-4B 145.918  435.287  Actual: 435.285.900
> > > XW-2A  145.672   435.043  : 435.042.600
> > > XW-2B  145.733   435.107  : 435.106.800
> > > XW-2C  145.798   435.167  : 435.166.800
> > >
> > > Very solid agreement, tnx so much. It would have saved  us a lot of

> time
> > > setting up the first time, had we had you nice program.
> > >
> > > Please add CAS-4A when you get time.
> > >
> > > 73, N0AN
> > >
> > >
> > > Hasan
> > >
> > >
> > > On Sat, Apr 27, 2019 at 8:41 PM Wendy and Terry Osborne via AMSAT-BB <
> > > amsat-bb@?????.???> wrote:
> > >
> > >> Hi Folks,
> > >>
> > >> With the number of Linear Transponder Satellites that are operational
> or
> > >> in the pipeline,
> > >> I thought a simple program to convert uplink to downlink frequencies
> was
> > >> worth writing.
> > >> I?ve written one for Windows.
> > >> You can find it here:
> > >>
> >
> https://www.dropbox.com/sh/4o375h6bygjxkzr/AABi9Ck9Wc6ODrhXwIVHxI-_a?dl=0
> > >> I?ve put the exe file and the same file in zip format.
> > >> I have put all the current birds plus the ones that have launches
> > pending.
> > >> Just select the satellite of interest from the ?Satellite? drop down
> > >> menu,
> > >> put your frequency into the text box and hit the Up or Dn calculate
> > >> button.
> > >>
> > >> Let me know if you think this is useful.
> > >>
> > >> 73,
> > >> Terry Osborne ZL2BAC
> > >> _______________________________________________
> > >> 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:
> https://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: https://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: https://www.amsat.org/mailman/listinfo/amsat-bb
>
--
--
Mark D. Johns
K?JM / M?GZO / ex-9H3DJ / ex-K?MDJ
Brooklyn Park, MN USA   EN35hd
-----------------------------------------------
"Heaven goes by favor; if it went by merit,
   you would stay out and your dog would go in."
    ---Mark Twain


------------------------------

Message: 10
Date: Tue, 30 Apr 2019 15:20:47 -0400
From: John Brier <johnbrier@?????.???>
To: k0jm@?????.???? "Mark D. Johns" <mjohns+K0JM@??????.???>
Cc: AMSAT-BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Linear Transponder Up and Down link frequency
calculator
Message-ID:
<CALn0fKOS7cqt4_AiFtA_s4CCqBfWEo7X31nM6m+PsNK31VCtLQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"

I haven't run it yet and am not on Windows currently so can't, but as to
Vinny's question, it says it's a calculator so I assume it calculates
frequencies with more precision not just every 5khz or something, right?

As for Mark's question, maybe you don't always need or want all the
features of SatPC32.

Finally, maybe it is partly an effort by Terry to see if he could do it ;-)

After all, why don't we all just pick up the phone if we need to talk to
someone who isn't within earshot?

Because we're hams!

With that said I think sharing the source code is almost always a good idea
:-)

73, John Brier KG4AKV



On Tue, Apr 30, 2019 at 3:12 PM Mark D. Johns via AMSAT-BB <
amsat-bb@?????.???> wrote:

> Perhaps I?m missing something, too. Why not use a full-featured tracking
> program, such as SatPC32, that has all of this already included?
>
> On Tue, Apr 30, 2019 at 13:06 Vinny Stipo via AMSAT-BB <amsat-bb@?????.???
> >
> wrote:
>
> > Am I missing something? Why not just put this info in a online
> > worksheet/excel, rather than compile a program with no source code?
> >
> > -Vinny KM2W
> >
> > On Tue, Apr 30, 2019 at 7:01 AM Hasan al-Basri via AMSAT-BB <
> > amsat-bb@?????.???> wrote:
> >
> > > Absolutelyl, no worries about doppler. The only one of concern was the
> > 1200
> > > Hz error and I think that was a typo. I'll look for the update. Tnx so
> > > much, it is a wonderful asset to sat ops. 73, N0AN
> > > Hasan
> > >
> > >
> > > On Mon, Apr 29, 2019 at 11:56 PM Wendy and Terry Osborne <
> > > wandtosborne@?????.???> wrote:
> > >
> > > > Hi Hassan,
> > > >
> > > > Just added CAS-4A to the list.
> > > > I was working off the AMSAT-NA Laminated frequency chart (April
> 2018).
> > > > Should have spotted it.
> > > >
> > > > I have also tweaked the frequency on CAS-4B to track with your
> > > > measurements.
> > > > Use the same link for the updated program.
> > > >
> > > > I?m tempted to add a few hundred Hertz to the conversion numbers to
> get
> > > > them spot on but the error
> > > > is probably less than the doppler correction required.
> > > >
> > > > Trying to correct for doppler would require a built in tracking
> program
> > > > and then you might as well use SatPC32.
> > > >
> > > > 73,
> > > > Terry ZL2BAC
> > > >
> > > > *From:* Hasan al-Basri <hbasri.schiers6@?????.???>
> > > > *Sent:* Sunday, April 28, 2019 11:48 PM
> > > > *To:* Wendy and Terry Osborne <wandtosborne@?????.???>
> > > > *Cc:* AMSAT-BB <amsat-bb@?????.???>
> > > > *Subject:* Re: [amsat-bb] Linear Transponder Up and Down link
> frequency
> > > > calculator
> > > >
> > > > Very nice Terry, but you forgot CAS-4a  :-)
> > > >
> > > > I work with pre-defined sat pairs to avoid Wifi spikes. Here are the
> > > > results for some of the common birds using our downlink and your
> uplink
> > > > (predicted) vs. what our uplinks really are for perfect audio.
> > > >
> > > > CAS-4B 145.918  435.287  Actual: 435.285.900
> > > > XW-2A  145.672   435.043  : 435.042.600
> > > > XW-2B  145.733   435.107  : 435.106.800
> > > > XW-2C  145.798   435.167  : 435.166.800
> > > >
> > > > Very solid agreement, tnx so much. It would have saved  us a lot of
> > time
> > > > setting up the first time, had we had you nice program.
> > > >
> > > > Please add CAS-4A when you get time.
> > > >
> > > > 73, N0AN
> > > >
> > > >
> > > > Hasan
> > > >
> > > >
> > > > On Sat, Apr 27, 2019 at 8:41 PM Wendy and Terry Osborne via AMSAT-BB
> <
> > > > amsat-bb@?????.???> wrote:
> > > >
> > > >> Hi Folks,
> > > >>
> > > >> With the number of Linear Transponder Satellites that are
> operational
> > or
> > > >> in the pipeline,
> > > >> I thought a simple program to convert uplink to downlink frequencies
> > was
> > > >> worth writing.
> > > >> I?ve written one for Windows.
> > > >> You can find it here:
> > > >>
> > >
> >
> https://www.dropbox.com/sh/4o375h6bygjxkzr/AABi9Ck9Wc6ODrhXwIVHxI-_a?dl=0
> > > >> I?ve put the exe file and the same file in zip format.
> > > >> I have put all the current birds plus the ones that have launches
> > > pending.
> > > >> Just select the satellite of interest from the ?Satellite? drop down
> > > >> menu,
> > > >> put your frequency into the text box and hit the Up or Dn calculate
> > > >> button.
> > > >>
> > > >> Let me know if you think this is useful.
> > > >>
> > > >> 73,
> > > >> Terry Osborne ZL2BAC
> > > >> _______________________________________________
> > > >> 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:
> > https://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: https://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: https://www.amsat.org/mailman/listinfo/amsat-bb
> >
> --
> --
> Mark D. Johns
> K?JM / M?GZO / ex-9H3DJ / ex-K?MDJ
> Brooklyn Park, MN USA   EN35hd
> -----------------------------------------------
> "Heaven goes by favor; if it went by merit,
>    you would stay out and your dog would go in."
>     ---Mark Twain
> _______________________________________________
> 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: https://www.amsat.org/mailman/listinfo/amsat-bb
>


------------------------------

Subject: Digest Footer

_______________________________________________
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 member? Join now to support the amateur satellite program!
https://www.amsat.org/mailman/listinfo/amsat-bb

------------------------------

End of AMSAT-BB Digest, Vol 14, Issue 172
*****************************************



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