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CX2SA > SATDIG 22.07.10 21:20l 574 Lines 20752 Bytes #999 (0) @ WW
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Today's Topics:
1. Re: AO-51 S band Question (Andrew Glasbrenner)
2. Re: Wouxon KG-UVD1P (CE3SOC Raul Romero)
3. Re: Wouxon KG-UVD1P (Gary "Joe" Mayfield)
4. RE: Grids and QSL?s (Jim Bennett)
5. Re: Grids and QSL?s (Andrew Glasbrenner)
6. Re: Grids and QSL?s (David Maciel)
7. Fw: [amsat-bb] Grids and QSL?s (David Maciel)
8. ISS (Jack Barbera)
9. Re: ISS (Dave Webb KB1PVH)
10. Re: ISS (Andrew Glasbrenner)
11. Re: ISS (Andrew Glasbrenner)
12. Lake Superior Grid Expedition August 2010 (John Papay)
----------------------------------------------------------------------
Message: 1
Date: Wed, 21 Jul 2010 16:37:16 -0400
From: Andrew Glasbrenner <glasbrenner@xxxxxxxxxx.xxx>
Subject: [amsat-bb] Re: AO-51 S band Question
To: Reid Crowe <reid.crowe@xxxxx.xxx>, Amsat-BB <amsat-bb@xxxxx.xxx>
Message-ID: <4C475A7C.6000902@xxxxxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Reid Crowe wrote:
>
> Drew,
> Do you think the bird will be able to support 2.4gig in the future?
> -Reid
>
Hi Reid,
I hope you don't mind if I copy this answer to the -bb as well. It's a
good question. The batteries on AO-51 have lost significant capacity
since launch six years ago, and in order to protect and lengthen their
life as long as possible, we are limiting the load during eclipse by
shutting off the UHF transmitter. We are also using the PL to only turn
on the UHF transmitter when in use. Both of these actions are controlled
by the flight software, specifically the PL and power management routines.
Since the S band transmitter on AO-51 is an added "experiment", the ways
in which it reacts with the IHU and flight software are different than
the UHF transmitters. The PL cannot be used to turn S on or off, only to
gate the audio. The power management software is unable to control the
state of the S band transmitter as well. The S transmitter is a fixed
output, that draws about 730 mA. This is an equivalent load to running
the 435.300 transmitter at over 1 watt. In other words, it is not an
insignificant load.
Since the return of eclipses this summer, after a long period of total
illumination, we have discovered that the S transmitter will pull the
battery voltage too low during eclipses. This activates a software
watchdog that shuts the S transmitter off until commanded back on from
the ground. As a work around, we have been using the automatic mode
scheduling software to re-enable the S transmitter a few minutes after
exiting eclipse each orbit. This has worked very well. The downside is
the scheduler only holds 18 events, as it was designed for the weekly
mode changes. At 1440 minutes per day, and 100 minutes per orbit, you
can see we need to upload a new schedule every day to keep S running
every orbit. As long as the satellite is in the sun, there is no problem
running the S downlink.
So, you can see why we have been frugal with S activity this summer, as
it is a real load on the command stations to plan the daily schedule,
encode it, and upload it to the satellite daily (at 5AM). The good news
is we return to a no eclipse period at the end of August, and I plan to
run S at a ~minimum~ of 1 week a month until eclipses return in 2011 for
many years. This works out OK over the summer, as there are lots of
folks on right now from their vacation spots, and out on the roads
giving out rare grids.
I hope this long-winded, probably-too-detailed explanation answers your
question.
73, Drew KO4MA
BTW, this AM Mark N8MH raised the 435.300 output to 1 watt.
------------------------------
Message: 2
Date: Wed, 21 Jul 2010 16:59:48 -0400
From: "CE3SOC Raul Romero" <ce3soc@xxxxx.xxx>
Subject: [amsat-bb] Re: Wouxon KG-UVD1P
To: "andy thomas" <andythomasmail@xxxxx.xx.xx>, "amsat"
<amsat-bb@xxxxx.xxx>
Message-ID: <B3330F57BB0B4F71A16BE9B496675193@xxxxxxxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
http://www.youtube.com/watch?v=AhMda5btD6w&feature=player_embedded
Rauk
CA3SOC
----- Original Message -----
From: "andy thomas" <andythomasmail@xxxxx.xx.xx>
To: "amsat" <amsat-bb@xxxxx.xxx>
Sent: Wednesday, July 21, 2010 2:15 PM
Subject: [amsat-bb] Wouxon KG-UVD1P
> has anyone any experience of using the Wouxon KG-UVD1P on AO-51 and the FM
> birds?
>
> I have looked at eham etc and it seems to be a single vfo with channel
> watch on both V and U; I'm not sure if a carrier on the uhf downlink would
> just switch the vfo to uhf listen and transmit, ie you could never tx on V
> if the carrier is on U...
>
> can someone confirm that it works/does not work with an Arrow, please?
>
> But "cheap as chips", and could be quite interesting?
>
> 73 de andy G0SFJ
>
>
>
>
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 3
Date: Wed, 21 Jul 2010 18:35:00 -0500
From: "Gary \"Joe\" Mayfield" <gary_mayfield@xxxxxxx.xxx>
Subject: [amsat-bb] Re: Wouxon KG-UVD1P
To: "'andy thomas'" <andythomasmail@xxxxx.xx.xx>, "'amsat'"
<amsat-bb@xxxxx.xxx>
Message-ID: <COL114-DS65D3A6676B78966B3D65B8AA10@xxx.xxx>
Content-Type: text/plain; charset="us-ascii"
No, as soon as you press the PTT the VHF TX would come on, and the UHF RCV
would shut off. When you release the PTT UHF RCV comes back on. I just
checked it with mine.
The radio hears well, but is not full duplex. It will work with the Arrow
(again not full duplex). The antenna connector is male SMA on the radio.
73,
Joe kk0sd
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of andy thomas
Sent: Wednesday, July 21, 2010 1:15 PM
To: amsat
Subject: [amsat-bb] Wouxon KG-UVD1P
has anyone any experience of using the Wouxon KG-UVD1P on AO-51 and the FM
birds?
I have looked at eham etc and it seems to be a single vfo with channel watch
on both V and U; I'm not sure if a carrier on the uhf downlink would just
switch the vfo to uhf listen and transmit, ie you could never tx on V if the
carrier is on U...
can someone confirm that it works/does not work with an Arrow, please?
But "cheap as chips", and could be quite interesting?
73 de andy G0SFJ
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 4
Date: Wed, 21 Jul 2010 21:35:21 -0400
From: "Jim Bennett" <jlb3nn@xxxxxxxxx.xxx>
Subject: RE: [amsat-bb] Grids and QSL?s
To: "'Andrew Glasbrenner'" <glasbrenner@xxxxxxxxxx.xxx>, "'David
Maciel'" <xe3dx@xxxxxxx.xxx.xx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <E48C87B07D8E43B196E74A6E6D62EF5F@xxxx>
Content-Type: text/plain; charset="iso-8859-1"
How accurate does the GPS need to be? I know GPS are similar but very
different in price. Some are accurate enough to be used for map making.
But for verification of grids worked, how accurate do they have to be?
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Andrew Glasbrenner
Sent: Wednesday, July 21, 2010 11:43 AM
To: David Maciel
Cc: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Grids and QSL?s
David Maciel wrote:
> I have a question maybe silly to many, I have traveled three times in the
past two months to the grid EK34 and EK44,
> take my portable radio equipment, do not work because my GPS was
damaged and another time I forget, but I'm sure
> the position where I was, may be valid if these grids work and send
my QSL with the coordinates where you work?
> no photo of my gps? I have received many cards from American stations QSL
writing grid over your home to put the new
> grid that time. this is valid? can be done? I have also contacted many
stations and sent my QSL card with a photo of the
> coordinates, I think is best, but not always possible, this'm glad because
I think that means that the word amateur is a
> great value. not if I explain.I had no problems for the ARRL accept these
cards an American amateur, whatever the same
> if that makes a Mexican ham? or any other country? thanks for help.
>
>
>
Hi David,
I think the photo of the GPS is only necessary when operating from a
grid boundary or intersection. If you know where you are by using a map,
and claim only one grid, that is perfectly fine! I know EK34 and 44
would be new grids for me, so by all means get on the air!
73, Drew KO4MA
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 5
Date: Wed, 21 Jul 2010 21:54:04 -0400
From: Andrew Glasbrenner <glasbrenner@xxxxxxxxxx.xxx>
Subject: Re: [amsat-bb] Grids and QSL?s
To: Jim Bennett <jlb3nn@xxxxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <4C47A4BC.8010905@xxxxxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Jim Bennett wrote:
> How accurate does the GPS need to be? I know GPS are similar but very
> different in price. Some are accurate enough to be used for map making.
> But for verification of grids worked, how accurate do they have to be?
>
heck
http://www.arrl.org/files/file/Awards%20Application%20Forms/VUCCRULE1a.pdf
, Item 4f:
Grid boundary lines and grid corners must be established using a GPS
receiver whose map datum is set to WGS84, the global default for current
GPS receivers. The GPS receiver should be set to use WAAS (Wide Area
Augmentation System) if
so equipped, since this improves the error figure to as little as 5
feet. In no case may the GPS receiver show an error figure in excess of
20 feet. Any modern GPS receiver equipped with WAAS will easily meet
this requirement, as will most older units without WAAS.
On the newer auto GPS units like the Nuvi series, you can go to the
Menu, then to I think "Where am I" and it will give you a lat long
readout. I'd tell you for sure what the Garmin sequence is to get to
that, but some hoodlum in Dayton relieved me of my wife's GPS this year,
as well as a rental car window. ;-)
73, Drew KO4MA
------------------------------
Message: 6
Date: Wed, 21 Jul 2010 22:12:54 -0500
From: "David Maciel" <xe3dx@xxxxxxx.xxx.xx>
Subject: Re: [amsat-bb] Grids and QSL?s
To: <amsat-bb@xxxxx.xxx>
Message-ID: <8B2C666F5D584857A5C10C14EC372E30@xxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=response
--------------------------------------------------
From: "Andrew Glasbrenner" <glasbrenner@xxxxxxxxxx.xxx>
Sent: Wednesday, July 21, 2010 10:43 AM
To: "David Maciel" <xe3dx@xxxxxxx.xxx.xx>
Cc: <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Grids and QSL?s
> David Maciel wrote:
>> I have a question maybe silly to many, I have traveled three times in
>> the past two months to the grid EK34 and EK44,
>> take my portable radio equipment, do not work because my GPS was
>> damaged and another time I forget, but I'm sure the position where I was,
>> may be valid if these grids work and send my QSL with the
>> coordinates where you work? no photo of my gps? I have received many
>> cards from American stations QSL writing grid over your home to put the
>> new
>> grid that time. this is valid? can be done? I have also contacted many
>> stations and sent my QSL card with a photo of the coordinates, I think is
>> best, but not always possible, this'm glad because I think that means
>> that the word amateur is a great value. not if I explain.I had no
>> problems for the ARRL accept these cards an American amateur, whatever
>> the same
>> if that makes a Mexican ham? or any other country? thanks for help.
>>
>>
>>
> Hi David,
>
> I think the photo of the GPS is only necessary when operating from a grid
> boundary or intersection. If you know where you are by using a map, and
> claim only one grid, that is perfectly fine! I know EK34 and 44 would be
> new grids for me, so by all means get on the air!
>
> 73, Drew KO4MA
>
------------------------------
Message: 7
Date: Wed, 21 Jul 2010 23:50:23 -0500
From: "David Maciel" <xe3dx@xxxxxxx.xxx.xx>
Subject: Fw: [amsat-bb] Grids and QSL?s
To: <amsat-bb@xxxxx.xxx>
Message-ID: <61DA1BF020C2467A80ABF55F71232783@xxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=response
thanks for help this summer I will work for all the grid EK34 and EK44.
now everything is very well understood. see you soon.
Dave
XE3DX - 4B3DX
--------------------------------------------------
From: "David Maciel" <xe3dx@xxxxxxx.xxx.xx>
Sent: Wednesday, July 21, 2010 10:12 PM
To: <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Grids and QSL?s
>
>
> --------------------------------------------------
> From: "Andrew Glasbrenner" <glasbrenner@xxxxxxxxxx.xxx>
> Sent: Wednesday, July 21, 2010 10:43 AM
> To: "David Maciel" <xe3dx@xxxxxxx.xxx.xx>
> Cc: <amsat-bb@xxxxx.xxx>
> Subject: Re: [amsat-bb] Grids and QSL?s
>
>> David Maciel wrote:
>>> I have a question maybe silly to many, I have traveled three times in
>>> the past two months to the grid EK34 and EK44,
>>> take my portable radio equipment, do not work because my GPS was
>>> damaged and another time I forget, but I'm sure the position where I
>>> was, may be valid if these grids work and send my QSL with the
>>> coordinates where you work? no photo of my gps? I have received many
>>> cards from American stations QSL writing grid over your home to put the
>>> new
>>> grid that time. this is valid? can be done? I have also contacted many
>>> stations and sent my QSL card with a photo of the coordinates, I think
>>> is best, but not always possible, this'm glad because I think that
>>> means that the word amateur is a great value. not if I explain.I had no
>>> problems for the ARRL accept these cards an American amateur, whatever
>>> the same
>>> if that makes a Mexican ham? or any other country? thanks for help.
>>>
>>>
>>>
>> Hi David,
>>
>> I think the photo of the GPS is only necessary when operating from a grid
>> boundary or intersection. If you know where you are by using a map, and
>> claim only one grid, that is perfectly fine! I know EK34 and 44 would be
>> new grids for me, so by all means get on the air!
>>
>> 73, Drew KO4MA
>>
------------------but Satpac has just the reverse for the voice
repeater. Which is correct?
thanks for any help?Jack WA1ZDV
------------------------------
Message: 9
Date: Thu, 22 Jul 2010 08:15:39 -0400
From: Dave Webb KB1PVH <kb1pvh@xxxxx.xxx>
Subject: [amsat-bb] Re: ISS
To: Jack Barbera <barberaalderwood@xxxxx.xxx>
Cc: Amsat Reflector <amsat-bb@xxxxx.xxx>
Message-ID:
<AANLkTikLby1l_o-CirutRcYG0oo55cFkqkSXTvSEC3lL@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Jack,
ISS cross band repeater is 437.800 up, 145.800 down. For crew contact,
144.490 up, 145.800 down, if they do it correctly up there.
Dave - KB1PVH
Sent from my Verizon Wireless DROID
On Jul 22, 2010 8:07 AM, "Jack Barbera" <barberaalderwood@xxxxx.xxx> wrote:
Just noted that the listing for ISS in satellite details @ AMSAT has the
uplink
145.800 and down 437.800 ,but Satpac has just the reverse for the voice
repeater. Which is correct?
thanks for any help Jack WA1ZDV
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 10
Date: Thu, 22 Jul 2010 08:16:06 -0400
From: Andrew Glasbrenner <glasbrenner@xxxxxxxxxx.xxx>
Subject: [amsat-bb] Re: ISS
To: Jack Barbera <barberaalderwood@xxxxx.xxx>
Cc: Amsat Reflector <amsat-bb@xxxxx.xxx>
Message-ID: <4C483686.2010302@xxxxxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Jack Barbera wrote:
> Just noted that the listing for ISS in satellite details @ AMSAT has the
uplink
> 145.800 and down 437.800 ,but Satpac has just the reverse for the voice
> repeater. Which is correct?
> thanks for any help Jack WA1ZDV
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
>
If you take a look at
http://www.amsat.org/amsat-new/satellites/satInfo.php?satID=19&retURL=/satelli
tes/status.php
we have both V/U and U/V listed, as it has operated in both
configurations. I believe the V/U one is more common though.
73, Drew KO4MA
------------------------------
Message: 11
Date: Thu, 22 Jul 2010 10:30:31 -0400
From: Andrew Glasbrenner <glasbrenner@xxxxxxxxxx.xxx>
Subject: [amsat-bb] Re: ISS
To: Jack Barbera <barberaalderwood@xxxxx.xxx>
Cc: Amsat Reflector <amsat-bb@xxxxx.xxx>
Message-ID: <4C485607.5080206@xxxxxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Andrew Glasbrenner wrote:
> f you take a look at
>
http://www.amsat.org/amsat-new/satellites/satInfo.php?satID=19&retURL=/satelli
tes/status.php
> we have both V/U and U/V listed, as it has operated in both
> configurations. I believe the V/U one is more common though.
>
> 73, Drew KO4MA
>
Scratch that. I edited the page this morning with input from Kenneth, N5VHO.
73, Drew KO4MA
------------------------------
Message: 12
Date: Thu, 22 Jul 2010 10:36:04 -0400
From: John Papay <john@xxxxxx.xxx>
Subject: [amsat-bb] Lake Superior Grid Expedition August 2010
To: amsat-bb@xxxxx.xxx
Message-ID: <388115.18080.qm@xxxxxxx.xxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
My 3 or 4 week grid expedition around Lake Superior is about
to start. The planned date is August 2nd, however, a jury
duty summons may interfere with the departure date. Hopefully
we will leave on time or a few days late.
The grids planned are:
EN28-29-36-37-38-39-
46-47-48-49-56-57-58-59-63-64-65-66-67-68-69-73-74-75-76-
77-78-79-83-84-86-87 and EO30 in both the US and Canada.
There will be FM and SSB activity, probably little CW if any.
This is a sightseeing trip around Lake Superior but I will do
my best to operate on the birds as much as possible. We will
be camping in a tent most of the time. Moving most every day
will make it interesting.
My XYL, W8ZJB, will be on the air only to work me if I have
remote access on the internet or cellphone. She agreed to do
this but please don't call her for a contact. She won't likely
respond except maybe to our son, KD8CAO.
Doug will be the point of contact for anyone wishing to get a
message to me during the trip. I don't anticipate much cellphone
coverage while we are in Canada. The planned route is on my
website: http://www.papays.com/sat
If you have specific requests, please email them to me and I'll
make a list and will be sure to look for you when I am in the grids
you need.
The station is a TS2000, dual band Alinco for SO-50 and AO-27 receive
only, G5400b, LVB tracker, SatPC32, Arrow 7x7 UHF with relay switching
between horizontal and vertical and a 5 el Mosley, vertically polarized
for 2 meters. I have a Mirage UHF preamp to help cut down on the coax
loses. All of this is in a F150 pickup. Other than orienting the
antennas north, everything is computer controlled and operating in the
rain is not a problem. Backup is my Kenwood V7A mobile with a neck
strap, a 7ah UPS battery, the Arrow II antenna, digital voice recorder
etc. We may do a backpack to Isle Royale with this setup if time
permits.
As always, I plan to qsl everyone I work on this trip. If you do
send an SASE, please wait until the end of the trip and include all
of your qso's on a card or sheet of paper. I anticipate that all
passes will be recorded.
I look forward to giving out a lot of needed grids. Hopefully the
equipment will work well throughout the trip.
73,
John K8YSE
------------------------------
_______________________________________________
Sent via amsat-bb@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT member? Join now to support the amateur satellite program!
http://amsat.org/mailman/listinfo/amsat-bb
End of AMSAT-BB Digest, Vol 5, Issue 316
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