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CX2SA  > SATDIG   13.02.19 17:15l 1010 Lines 36065 Bytes #7 (0) @ WW
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Read: GUEST
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Path: ED1ZAC<ED1ZAC<IZ3LSV<IW0QNL<OK0NBR<SV1CMG<ON0AR<OZ5BBS<CX2SA
Sent: 190213/1551Z @:CX2SA.SAL.URY.SOAM #:6 [Salto] FBB7.00e $:AMSATBB1467
From: CX2SA@CX2SA.SAL.URY.SOAM
To  : SATDIG@WW

Today's Topics:

   1. Remove hard stop in G5400B? (Roy Dean)
   2. Re: Fwd: Re: [UKMicrowaves] OSCAR-100 (Joe)
   3. QUERY INTERNATIONAL SPACE STATION - LU8ATK (Esteban Pascazzi)
   4. Re: The Space Race is On--and We're Behind...
      (Peter Goodhall (2M0SQL))
   5. Re: ISS APRS Signal Quality? (kb2mjeff@???.????
   6. Re: ISS APRS Signal Quality? (tone skew?) (Robert Bruninga)
   7. Everyone's Talking About It (JoAnne K9JKM)
   8. Re: G-5500/LVB Tracker (George Sakai)
   9. Re: ISS APRS Signal Quality? (Dave Taylor)
  10. Re: ISS APRS Signal Quality? (tone skew?) (Frank Karnauskas)


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

Message: 1
Date: Wed, 13 Feb 2019 08:34:08 -0500
From: Roy Dean <royldean@?????.???>
To: amsat-bb@?????.???
Subject: [amsat-bb] Remove hard stop in G5400B?
Message-ID:
<CADGPg2sdLmatmr_0SnLVUjFmYpaYSRvtOXgmn7mfPk7dUXh4xQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"

Has anybody considered (or actually gone through with) removing the hard
stop in a G5400B azimuth rotator, and setting it up as a 450? rotator (or
whatever the G5500B is)?   I'm wondering if this might be a novel way of
getting more utility out of it.   I think it may even be possible in the
Fox-Delta and G-Predict to increase these limits more.   Obviously coax
management must be considered.

---Roy
K3RLD


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

Message: 2
Date: Wed, 13 Feb 2019 07:46:36 -0600
From: Joe <nss@???.???>
To: "R. Chastain" <suenrod@?????.???>, AMSAT BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] Fwd: Re: [UKMicrowaves] OSCAR-100
Message-ID: <2ebc82e5-2458-fc90-c6af-9f747b6df754@???.???>
Content-Type: text/plain; charset=windows-1252; format=flowed

Being where the coverage is, maybe everyone is asleep?

Joe WB9SBD
Sig
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com
On 2/12/2019 11:37 PM, R. Chastain via AMSAT-BB wrote:
>   Why are no signals now? Do they turn it off periodically?
> KD0XX-EM86Rod
>      On Tuesday, February 12, 2019, 11:04:03 PM EST, Joe <nss@???.???>
wrote:
>
>   I was one of them!
> What an awesome Bird! Wouldn't it be soo awesome if we could get three
> up there linked together 100% worldwide coverage.
>
> Listening to some of the stations describe what they are using did not
> sound overly complex either!
>
> Joe WB9SBD
> Sig
> The Original Rolling Ball Clock
> Idle Tyme
> Idle-Tyme.com
> http://www.idle-tyme.com
> On 2/12/2019 5:52 PM, John Brier wrote:
>> There were over 300 people on the Goonhilly WebSDR alone this
>> afternoon. This is a great time for AMSAT! I must say I am very
>> jealous though!
>>
>> 73, John Brier KG4AKV
>>
>> On Tue, Feb 12, 2019 at 12:55 PM Jean Marc Momple
>> <jean.marc.momple@?????.???> wrote:
>>> Andrew,
>>>
>>> Thanks to have shared, was not aware of that communication. And to all
who may have been somehow been embarrassed by my comments about the HAM
discipline etc. Please accept my apologies for same.
>>>
>>> This side no luck, my setup was ready over a year ago and tested many
times, today trying to Tx (after your mail) I have a high SWR and cannot
access the bird, will have to wait Saturday to figure it out and hopefully
make my 1st QSO through the bird.
>>>
>>> 73
>>>
>>>
>>> Jean Marc (3B8DU)
>>>
>>>> On Feb 12, 2019, at 9:19 PM, Andrew Glasbrenner
<glasbrenner@??????????.???> wrote:
>>>>
>>>> AMSAT-DL opened it this morning.
>>>>
>>>> https://amsat-dl.org/qo-100-nb-transponder-experimental-operation
>>>>
>>>> 73, Drew KO4MA
>>>>
>>>> -----Original Message-----
>>>> From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of Jean Marc Momple
>>>> Sent: Tuesday, February 12, 2019 12:00 PM
>>>> To: n1jez@?????????????????.???
>>>> Cc: AMSAT BB <amsat-bb@?????.???>
>>>> Subject: Re: [amsat-bb] Fwd: Re: [UKMicrowaves] OSCAR-100
>>>>
>>>> Mike,
>>>>
>>>> Heard many stations in QSO today really strong (loud and clear), seems
that
>>>> the bird will be very popular in these low solar times. Also it seems
that
>>>> strong signal with 5-10 watts in 70 cm dish for uplink is confirmed from
>>>> many, therefore the forecast in terms of power budget seems confirmed so
>>>> far.
>>>>
>>>> Myself refraining to Tx per AMSAT-DL recommendation (just a question of
>>>> discipline) but will surely do so by Friday.
>>>>
>>>> 73
>>>>
>>>>
>>>>
>>>> Jean Marc (3B8DU)
>>>>
>>>>> On Feb 12, 2019, at 8:44 PM, Mike Seguin <n1jez@?????????????????.???>
>>>> wrote:
>>>>> Just heard G3WDG and DB6NT in QSO via the Goonhilly SDR.
>>>>>
>>>>> https://eshail.batc.org.uk/nb/
>>>>>
>>>>> On 2/12/2019 10:37 AM, Simon Brown wrote:
>>>>>> Quite a few stations on the narrow band (voice) transponder right now.
>>>> It's open for experimental use.
>>>>>> https://amsat-dl.org/
>>>>>> Simon Brown, G4ELI
>>>>>> www.sdr-radio.com
>>>>>> -----Original Message-----
>>>>>> From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of Graham
>>>>>> Shirville
>>>>>> Sent: 11 February 2019 10:56
>>>>>> To: AMSAT <amsat-bb@?????.???>
>>>>>> Subject: [amsat-bb] Fwd: Re: [UKMicrowaves] OSCAR-100 A relay from
>>>>>> the UK Microwave group with a request from the Chairman of BATC which
is
>>>> fully supported by AMSAT-UK of course. Please be patient.
>>>>>> 73
>>>>>> Graham
>>>>>> G3VZV
>>>>>> _______________________________________________
>>>>>> 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
>>>>> --
>>>>>
>>>>> 73,
>>>>> Mike, N1JEZ
>>>>> "A closed mouth gathers no feet"
>>>>> _______________________________________________
>>>>> 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
>>>>
>>> _______________________________________________
>>> 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
>>
>>
> _______________________________________________
> 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: 3
Date: Wed, 13 Feb 2019 06:23:56 -0300
From: Esteban Pascazzi <estebanpascazzi@?????.???>
To: AMSAT-BB@?????.???
Subject: [amsat-bb] QUERY INTERNATIONAL SPACE STATION - LU8ATK
Message-ID:
<CAPCxCNoQU8jRkFVM+_9sjgDdyOnismadOM56PK+=X8n6Z4aGZw@????.?????.???>
Content-Type: text/plain; charset="UTF-8"

hello from Argentina
I would like to know if the station transmits SSTV when it passes through
my country ... I have been QAP but I could not receive it.
Thank you !


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

Message: 4
Date: Wed, 13 Feb 2019 10:04:51 +0000
From: "Peter Goodhall (2M0SQL)" <peter@????????.??.??>
To: Les Rayburn <les@????????????.???>
Cc: Amsat <amsat-bb@?????.???>
Subject: Re: [amsat-bb] The Space Race is On--and We're Behind...
Message-ID:
<CAFvUaip_QRkXn_cnowjw6PexgAZAnTMLD0J3vhQmOxFVqKmYDQ@????.?????.???>
Content-Type: text/plain; charset="UTF-8"

Les,

While I understand the disappointment that North America isn't in the
footprint it's worth understanding that QO-100 was probably pure luck & the
sheer cost involved would probably bankrupt AMSAT even if it did have the
funds sitting around.

What AMSAT (USA & UK/NL) achieve & get into orbit is still impressive in
its own right although I think some on the -BB disagree.

Perhaps Es'Hail-2 will encourage other commercial companies to provide bent
pipe transponders but it's a huge ask & they may even want a few million
dollars for the deal.

Let's enjoy what we have

Peter, 2M0SQL

On Wed, 13 Feb 2019, 09:55 Les Rayburn <les@????????????.??? wrote:

> :-)
>
> After listening to the WebSDR of Oscar-100 for nearly 24 hours now, it?s
> easy to imagine how my parents must have felt on October 4, 1957 as Sputnik
> transmitted it?s ?beep beep beep? message to the world. Everything had
> changed in an instant.
>
> A geostationary hamsat is a quantum leap forward?and I confess to feeling
> a twinge of disappointment that someone other than AMSAT-NA accomplished
> this feat first.
>
> As a teenager, I remember driving a friends brand new, 1974 Corvette
> Stingray. My first thought was ?Man! I gotta get me one of these!? Color me
> jealous.
>
>
> 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: 5
Date: Wed, 13 Feb 2019 07:14:08 -0500
From: <kb2mjeff@???.???>
Cc: "'AMSAT -BB'" <amsat-bb@?????.???>
Subject: Re: [amsat-bb] ISS APRS Signal Quality?
Message-ID: <02cb01d4c395$a0126310$e0372930$@???.???>
Content-Type: text/plain;	charset="us-ascii"

I'm also having trouble working the ISS packet station, since it's been
turned back on. I'm kinda seeing that I can get in better when the ISS is at
a certain angle from me. I'm almost sure of this but have been busy
elsewhere, so I'm not around for all the passes to be certain. Maybe they'll
go back to the good antenna location, if they can...

73 Jeff kb2m

-----Original Message-----
From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of Brian Clark
Sent: Tuesday, February 12, 2019 10:54 PM
To: Fernando Ramirez <framirezferrer@?????.???>
Cc: AMSAT -BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] ISS APRS Signal Quality?

It appears that after the system came back after being down for over a
month, that something changed.  I have been able to hit it with a Kenwood
TH-D72, but it was not easy.  The receive is a bit deaf, and the transmit is
very weak.  I tried last evening, but was unsuccessful.

I am wondering if some new antenna systems are being tested.  It was a
similar situation with the SSTV event over the weekend, then it came back
full strength.  I am certain that after the testing is complete (if that is
what is going on) things will be strong and great again.  The A.R.I.S.S.
Team is very good and is always working hard with the ISS crew members to
keep the systems in tip top shape.

73's de KF6FES

Brian,


On Tue, Feb 12, 2019, 6:46 PM Fernando Ramirez <framirezferrer@?????.???
wrote:

> I have tried two different radios, an Icom IC-2820h and a Kenwood TM-V71A.
> No luck with the Icom at full power on a high elevation pass. Better
> luck with the Kenwood but only on higher passes and transmitting with 50w.
>
> Other operators have been able to get their packets digipeated with
> Kenwood APRS-Ready HTs, so it's kind of puzzling.
>
> I'm using a Mobilinkd TNC3. I have no problem hitting distant
> terrestrial digipeaters with both setups.
>
> 73
> Fernando, NP4JV
>
> On Tue, Feb 12, 2019, 7:37 PM <walterh@????.???> wrote:
>
> > I definitely have to agree with you.
> >
> > The signal does seem to be less than half of what it used to be, and
> > I
> have
> > yet to hit it myself. When it used to be so easy.
> >
> > Not sure what has changed, but it's certainly not the same as it was
> before
> > the shut down several weeks ago.
> >
> > Walter/K5WH
> >
> > -----Original Message-----
> > From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of Frank
> Karnauskas
> > Sent: Tuesday, February 12, 2019 5:19 PM
> > To: amsat-bb@?????.???
> > Subject: [amsat-bb] ISS APRS Signal Quality?
> >
> > Is it me or does the APRS signal not sound as strong as it was
> > before and is it not hearing quite as well?
> >
> > I am having a heck of a time pinging the digipeater and the signal
> > seems
> to
> > be down a bit.
> >
> > Could entirely be something on my end, but I would appreciate others'
> > opinion.
> >
> > 73,
> > Frank
> >
> > FRANK W. KARNAUSKAS, N1UW
> > N1UW@???????.???
> >
> >
> > _______________________________________________
> > 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
> >
> _______________________________________________
> 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: 6
Date: Wed, 13 Feb 2019 09:39:03 -0500
From: Robert Bruninga <bruninga@????.???>
To: AMSAT -BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] ISS APRS Signal Quality? (tone skew?)
Message-ID: <4aadc698c172d817ff7cdc316ad63341@????.?????.???>
Content-Type: text/plain; charset="UTF-8"

Im gonna take a stab with zero current knowledge.

Butover the years, one DIGI on ISS uses a radio and an external TNC with
audio connections.  The other digi on ISS used a Kenwood with internal TNC
directly connected to the discriminator and modulator.  One has a flat
response and the other has the normal preemphasis and deemphasis.

So if one transmits tones that are inbalanced, then one system does better
than the other.  And in fact, with just a few dB of inbalance in the wrong
direction, no amount of RF power will correct that.  It simply will not
decode.

You can hear this on terrestrial packet frequencies.  Probably 80% of all
the signals on the air "work" but have terribly misconfigured tones.
People just hook'em'up and "it works" to the local digi, but they are not
aware that it might not work at all in weak signal realm where tone
settings must be ideal.

On my mobile, I see some signals that are dead full quieting with all
signal bars that do not decode, and then I see another kenwood with only 3
bars and noisy that does just fine.  Tone balance is exteremely critical.

Everyone should look at their tones on an oscope or at least listen to
their tones compared to a good known signal. (Factory TNC in a k enwood).
Though, when you listen to or look at "your " tones, the characteristics
of the audio in that receiver can also have a skew.

And, do NOT look at them one at a time.  That tells you nothing.  Since
the speech circuits will adjust them to the same level usually...  Look at
the relative amplitudes of the two.  You can fix them with the right
capacitor either in series to improve the high tone, or in parallel to
diminish the high tone.

But the right cap must perfectly match the impedance of your particular
set up.

Bob, WB4aPR

-----Original Message-----
From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of Fernando Ramirez
Sent: Tuesday, February 12, 2019 9:43 PM
To: walterh@????.???
Cc: AMSAT -BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] ISS APRS Signal Quality?

I have tried two different radios, an Icom IC-2820h and a Kenwood TM-V71A.
No luck with the Icom at full power on a high elevation pass. Better luck
with the Kenwood but only on higher passes and transmitting with 50w.

Other operators have been able to get their packets digipeated with
Kenwood APRS-Ready HTs, so it's kind of puzzling.

I'm using a Mobilinkd TNC3. I have no problem hitting distant terrestrial
digipeaters with both setups.

73
Fernando, NP4JV

On Tue, Feb 12, 2019, 7:37 PM <walterh@????.???> wrote:

> I definitely have to agree with you.
>
> The signal does seem to be less than half of what it used to be, and I
> have yet to hit it myself. When it used to be so easy.
>
> Not sure what has changed, but it's certainly not the same as it was
> before the shut down several weeks ago.
>
> Walter/K5WH
>
> -----Original Message-----
> From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of Frank
> Karnauskas
> Sent: Tuesday, February 12, 2019 5:19 PM
> To: amsat-bb@?????.???
> Subject: [amsat-bb] ISS APRS Signal Quality?
>
> Is it me or does the APRS signal not sound as strong as it was before
> and is it not hearing quite as well?
>
> I am having a heck of a time pinging the digipeater and the signal
> seems to be down a bit.
>
> Could entirely be something on my end, but I would appreciate others'
> opinion.
>
> 73,
> Frank
>
> FRANK W. KARNAUSKAS, N1UW
> N1UW@???????.???
>
>
> _______________________________________________
> 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
>
_______________________________________________
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: 7
Date: Wed, 13 Feb 2019 09:19:39 -0600
From: "JoAnne K9JKM" <joanne.k9jkm@?????.???>
To: <amsat-bb@?????.???>
Subject: [amsat-bb] Everyone's Talking About It
Message-ID: <5c64358b.1c69fb81.7343a.5388@??.??????.???>
Content-Type: text/plain;	charset="us-ascii"

A local club member sent me this link. Even the SOTA people are talking
about QO-100:
http://reflector.sota.org.uk/t/eshail-2-now-operational/19529/13

--
73 de JoAnne K9JKM
k9jkm@?????.???





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

Message: 8
Date: Wed, 13 Feb 2019 15:19:47 +0000 (UTC)
From: George Sakai <grsakai5120@?????.???>
To: amsat-bb@?????.???
Subject: Re: [amsat-bb] G-5500/LVB Tracker
Message-ID: <1488439347.295245.1550071187872@????.?????.???>
Content-Type: text/plain; charset=UTF-8

 Hello Everyone,
Thanks for all the inputs/comments you gave me.? My G-5500 rotor indicator
problem has been fixed.? John, K8YSE, suggested I adjust the Elevation Full
Scale screw on the back of the rotor box.? I did that and the elevation
meter now moves and indicates proper angles.
73, George N3GS, EM28
    On ?Sunday?, ?February? ?10?, ?2019? ?11?:?24?:?21? ?AM? ?CST, George
Sakai <grsakai5120@?????.???> wrote:

 Has anyone experienced problems with the Elevation or Azimuth indicator
(meter) of G-5500 rotator ?? The Elevation meter does not move at all.? The
LVB Tracker shows correct Azimuth and Elevation angles and the G-5500
rotator follows the correct angles.? However, the Elevation meter of G-5500
remains at zero degree.? The Azimuth meter works just fine.? Thanks.
73, George N3GS

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

Message: 9
Date: Wed, 13 Feb 2019 10:20:20 -0500
From: Dave Taylor <w8aas@???????.???>
To: AMSAT -BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] ISS APRS Signal Quality?
Message-ID: <EC2795F2-FBAB-4EE4-8B1B-85AE182F4EE1@???????.???>
Content-Type: text/plain;	charset=us-ascii

APRS is now using a new packet module that is identical in construction to
the failed one.  The new packet module was just launched to space a few
months ago as a backup and just put into operation.  We are using the same
radio and antenna as before, so any differences people are seeing should be
due to the TNC in the packet module.

SSTV was sent using a different radio and antenna, from the other end of
ISS.  The initial problem with it was completely unrelated to APRS.

Dave, W8AAS

> On Feb 13, 2019, at 7:14 AM, kb2mjeff@???.??? wrote:
>
> I'm also having trouble working the ISS packet station, since it's been
> turned back on. I'm kinda seeing that I can get in better when the ISS is at
> a certain angle from me. I'm almost sure of this but have been busy
> elsewhere, so I'm not around for all the passes to be certain. Maybe they'll
> go back to the good antenna location, if they can...
>
> 73 Jeff kb2m
>
> -----Original Message-----
> From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of Brian Clark
> Sent: Tuesday, February 12, 2019 10:54 PM
> To: Fernando Ramirez <framirezferrer@?????.???>
> Cc: AMSAT -BB <amsat-bb@?????.???>
> Subject: Re: [amsat-bb] ISS APRS Signal Quality?
>
> It appears that after the system came back after being down for over a
> month, that something changed.  I have been able to hit it with a Kenwood
> TH-D72, but it was not easy.  The receive is a bit deaf, and the transmit is
> very weak.  I tried last evening, but was unsuccessful.
>
> I am wondering if some new antenna systems are being tested.  It was a
> similar situation with the SSTV event over the weekend, then it came back
> full strength.  I am certain that after the testing is complete (if that is
> what is going on) things will be strong and great again.  The A.R.I.S.S.
> Team is very good and is always working hard with the ISS crew members to
> keep the systems in tip top shape.
>
> 73's de KF6FES
>
> Brian,
>
>
> On Tue, Feb 12, 2019, 6:46 PM Fernando Ramirez <framirezferrer@?????.???
> wrote:
>
>> I have tried two different radios, an Icom IC-2820h and a Kenwood TM-V71A.
>> No luck with the Icom at full power on a high elevation pass. Better
>> luck with the Kenwood but only on higher passes and transmitting with 50w.
>>
>> Other operators have been able to get their packets digipeated with
>> Kenwood APRS-Ready HTs, so it's kind of puzzling.
>>
>> I'm using a Mobilinkd TNC3. I have no problem hitting distant
>> terrestrial digipeaters with both setups.
>>
>> 73
>> Fernando, NP4JV
>>
>> On Tue, Feb 12, 2019, 7:37 PM <walterh@????.???> wrote:
>>
>>> I definitely have to agree with you.
>>>
>>> The signal does seem to be less than half of what it used to be, and
>>> I
>> have
>>> yet to hit it myself. When it used to be so easy.
>>>
>>> Not sure what has changed, but it's certainly not the same as it was
>> before
>>> the shut down several weeks ago.
>>>
>>> Walter/K5WH
>>>
>>> -----Original Message-----
>>> From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of Frank
>> Karnauskas
>>> Sent: Tuesday, February 12, 2019 5:19 PM
>>> To: amsat-bb@?????.???
>>> Subject: [amsat-bb] ISS APRS Signal Quality?
>>>
>>> Is it me or does the APRS signal not sound as strong as it was
>>> before and is it not hearing quite as well?
>>>
>>> I am having a heck of a time pinging the digipeater and the signal
>>> seems
>> to
>>> be down a bit.
>>>
>>> Could entirely be something on my end, but I would appreciate others'
>>> opinion.
>>>
>>> 73,
>>> Frank
>>>
>>> FRANK W. KARNAUSKAS, N1UW
>>> N1UW@???????.???
>>>
>>>
>>> _______________________________________________
>>> 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
>>>
>> _______________________________________________
>> 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
>
> _______________________________________________
> 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: Wed, 13 Feb 2019 08:42:10 -0700
From: "Frank Karnauskas" <n1uw@???????.???>
To: "'AMSAT -BB'" <amsat-bb@?????.???>
Subject: Re: [amsat-bb] ISS APRS Signal Quality? (tone skew?)
Message-ID: <000c01d4c3b2$af575c00$0e061400$@???????.???>
Content-Type: text/plain;	charset="us-ascii"

Bob, your guess would be more likely if the ground station was using
an external TNC whereby the settings might have gotten mucked up
somewhere along the way.  But, I, for one, am using the same TH-D74
and the same TM-D710G I was using before.  It's unlikely that both
radios went weird at the same time.

I really wish the problem was on my end.  It's a lot easier to fix
things on the ground than it is up there!

73,
Frank

FRANK W. KARNAUSKAS, N1UW
N1UW@???????.???
612-644-9174

-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces@?????.???? On Behalf Of Robert
Bruninga
Sent: Wednesday, February 13, 2019 7:39 AM
To: AMSAT -BB
Subject: Re: [amsat-bb] ISS APRS Signal Quality? (tone skew?)

Im gonna take a stab with zero current knowledge.

Butover the years, one DIGI on ISS uses a radio and an external TNC
with
audio connections.  The other digi on ISS used a Kenwood with internal
TNC
directly connected to the discriminator and modulator.  One has a flat
response and the other has the normal preemphasis and deemphasis.

So if one transmits tones that are inbalanced, then one system does
better
than the other.  And in fact, with just a few dB of inbalance in the
wrong
direction, no amount of RF power will correct that.  It simply will
not
decode.

You can hear this on terrestrial packet frequencies.  Probably 80% of
all
the signals on the air "work" but have terribly misconfigured tones.
People just hook'em'up and "it works" to the local digi, but they are
not
aware that it might not work at all in weak signal realm where tone
settings must be ideal.

On my mobile, I see some signals that are dead full quieting with all
signal bars that do not decode, and then I see another kenwood with
only 3
bars and noisy that does just fine.  Tone balance is exteremely
critical.

Everyone should look at their tones on an oscope or at least listen to
their tones compared to a good known signal. (Factory TNC in a k
enwood).
Though, when you listen to or look at "your " tones, the
characteristics
of the audio in that receiver can also have a skew.

And, do NOT look at them one at a time.  That tells you nothing.
Since
the speech circuits will adjust them to the same level usually...
Look at
the relative amplitudes of the two.  You can fix them with the right
capacitor either in series to improve the high tone, or in parallel to
diminish the high tone.

But the right cap must perfectly match the impedance of your
particular
set up.

Bob, WB4aPR

-----Original Message-----
From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of Fernando
Ramirez
Sent: Tuesday, February 12, 2019 9:43 PM
To: walterh@????.???
Cc: AMSAT -BB <amsat-bb@?????.???>
Subject: Re: [amsat-bb] ISS APRS Signal Quality?

I have tried two different radios, an Icom IC-2820h and a Kenwood
TM-V71A.
No luck with the Icom at full power on a high elevation pass. Better
luck
with the Kenwood but only on higher passes and transmitting with 50w.

Other operators have been able to get their packets digipeated with
Kenwood APRS-Ready HTs, so it's kind of puzzling.

I'm using a Mobilinkd TNC3. I have no problem hitting distant
terrestrial
digipeaters with both setups.

73
Fernando, NP4JV

On Tue, Feb 12, 2019, 7:37 PM <walterh@????.???> wrote:

> I definitely have to agree with you.
>
> The signal does seem to be less than half of what it used to be, and
I
> have yet to hit it myself. When it used to be so easy.
>
> Not sure what has changed, but it's certainly not the same as it was
> before the shut down several weeks ago.
>
> Walter/K5WH
>
> -----Original Message-----
> From: AMSAT-BB <amsat-bb-bounces@?????.???> On Behalf Of Frank
> Karnauskas
> Sent: Tuesday, February 12, 2019 5:19 PM
> To: amsat-bb@?????.???
> Subject: [amsat-bb] ISS APRS Signal Quality?
>
> Is it me or does the APRS signal not sound as strong as it was
before
> and is it not hearing quite as well?
>
> I am having a heck of a time pinging the digipeater and the signal
> seems to be down a bit.
>
> Could entirely be something on my end, but I would appreciate
others'
> opinion.
>
> 73,
> Frank
>
> FRANK W. KARNAUSKAS, N1UW
> N1UW@???????.???
>
>
> _______________________________________________
> 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
>
_______________________________________________
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



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

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!
http://www.amsat.org/mailman/listinfo/amsat-bb

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

End of AMSAT-BB Digest, Vol 14, Issue 67
****************************************


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