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CX2SA > SATDIG 24.02.10 22:06l 574 Lines 17766 Bytes #999 (0) @ WW
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Sent: 100224/2003Z @:CX2SA.LAV.URY.SA #:42117 [Minas] FBB7.00e $:AMSATBB594
From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: drake 2880 (John Wright)
2. Plastic weatherproof box (Jeff Yanko)
3. IAC 2009 Video - Space Education (Trevor .)
4. Re: drake 2880 (n1jez@xxxxxxxxxxxxxxxxx.xxxx
5. antennas for AO-51 V/S (John Heath)
6. Re: Plastic weatherproof box (Stan, W1LE)
7. Re: Plastic weatherproof box (Glen Zook)
8. OSCAR-11 Report (Clive Wallis)
9. Re: Plastic weatherproof box (George Henry)
10. Re: AO-51 V/S (Ron Miles)
11. FT857/ft897 on FM sats (John Geiger)
12. patch antenna for AO-51 (Aa4mi@xxx.xxxx
13. Next HV Satcom Group net nate (Stuart Balanger)
14. Re: patch antenna for AO-51 (Trevor .)
----------------------------------------------------------------------
Message: 1
Date: Wed, 24 Feb 2010 08:46:54 +0000
From: John Wright <ham@xxxxx.xx.xx>
Subject: [amsat-bb] Re: drake 2880
To: amsat-bb@xxxxx.xxx
Message-ID: <0MMHcb-1Nq0C23eVJ-008gDx@xxxxxxxx.xxxxxxxxxxxx.xx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
At 23:26 23/02/2010, you wrote:
>Has any one used the Drake 2880 downconverter on the air.
Not been on the Sats for some time, but when AO40 was alive, I used
the drake for the downlink.
my experiences are shown at -
http://www.g4dmf.co.uk/dish/antenna.html
From what I gather, AO51 is a magnitude stronger than AO40 ever was.
The Drake provided solid copy of Telemetry.
There are links in the article to various pictures I took, including
a screen-shot of AO40 data on screen, and links to the mod pages for
some of the many modifications done to that downconvertor.
RIP AO40... Praying for a " Battery Event " on that bird too!
------------------------------
Message: 2
Date: Wed, 24 Feb 2010 02:41:27 -0800
From: "Jeff Yanko" <wb3jfs@xxx.xxx>
Subject: [amsat-bb] Plastic weatherproof box
To: <amsat-bb@xxxxx.xxx>
Message-ID: <A882B70BD110439780D0D492F19D7D67@xxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Hi all,
I'm in a project which needs plastic weatherproof box. No holes in the box
would be ok since I can drill them, run the cables then seal it very well.
Looking for 10x10x4, 12x12x4. I've checked Home Depot and they have
nothing. Does anybody know would might carry such an item?
You can contact me off -bb.
73,
Jeff WB3JFS
------------------------------
Message: 3
Date: Wed, 24 Feb 2010 10:47:12 +0000 (GMT)
From: "Trevor ." <m5aka@xxxxx.xx.xx>
Subject: [amsat-bb] IAC 2009 Video - Space Education
To: amsat-bb@xxxxx.xxx
Message-ID: <700887.48104.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
A video made at IAC 2009 - Space Education through Nano/Pico Satellites -
is available and features Martin Sweeting G3JYO and Roland Coelho WH7BE
It can be seen at
http://www.southgatearc.org/news/february2010/space_education.htm
73 Trevor M5AKA
Daily Amateur Radio News (Email/RSS): http://www.southgatearc.org/
Email Your News To: editor at southgatearc.org
Or Upload Using Form At: http://www.southgatearc.org/news/your_news_1.htm
----
------------------------------
Message: 4
Date: Wed, 24 Feb 2010 06:03:32 -0500
From: <n1jez@xxxxxxxxxxxxxxxxx.xxx>
Subject: [amsat-bb] Re: drake 2880
To: "Jim" <hartwell@xxxxxxxx.xxx>, <AMSAT-BB@xxxxx.xxx>
Message-ID: <6BEFC03172DC4010A537639634CD2A01@xxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Hi Jim,
2880 has been on the tower here since the AO-40 days. System is a G3RUH
patch feed/dish. DB6NT preamp connected right to the patch feeding the 2880
which is up on the crossarm. I leave it continuously powered.
Works OK on AO-51. Solid copy.
73,
Mike, N1JEZ
AMSAT 29649
"A closed mouth gathers no feet"
----- Original Message -----
From: "Jim" <hartwell@xxxxxxxx.xxx>
Subject: [amsat-bb] drake 2880
> Has any one used the Drake 2880 downconverter on the air.
------------------------------
Message: 5
Date: Wed, 24 Feb 2010 12:24:41 +0000 (GMT)
From: John Heath <g7hia@xxxxxxxxxx.xxx>
Subject: [amsat-bb] antennas for AO-51 V/S
To: Amsat <amsat-bb@xxxxx.xxx>
Message-ID: <261517.97210.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
Enjoy V/S on AO-51
Visit www.uk.amsat.org and go to the shop.
There you will find an easy build complete kit for a patch antenna ideal for
AO-51
73 John G7HIA
------------------------------
Message: 6
Date: Wed, 24 Feb 2010 09:02:52 -0500
From: "Stan, W1LE" <stanw1le@xxxxxxx.xxx>
Subject: [amsat-bb] Re: Plastic weatherproof box
To: Jeff Yanko <wb3jfs@xxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <4B85318C.6020205@xxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Hello Jeff,
Try:
1. LOWES electrical section
2. Ebay using a "NEMA 4X enclosure" search
3. www.teksupply.com
4. your local electrical supply house
5. Mouser and DigiKey also have weatherproof enclosures
Stan, W1LE Cape Cod FN41sr
Jeff Yanko wrote:
> Hi all,
>
> I'm in a project which needs plastic weatherproof box. No holes in the box
> would be ok since I can drill them, run the cables then seal it very well.
> Looking for 10x10x4, 12x12x4. I've checked Home Depot and they have
> nothing. Does anybody know would might carry such an item?
>
> You can contact me off -bb.
>
>
>
> 73,
>
> Jeff WB3JFS
>
>
>
>
> _______________________________________________
> 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: 7
Date: Wed, 24 Feb 2010 07:10:37 -0800 (PST)
From: Glen Zook <gzook@xxxxx.xxx>
Subject: [amsat-bb] Re: Plastic weatherproof box
To: amsat-bb@xxxxx.xxxx Jeff Yanko <wb3jfs@xxx.xxx>
Message-ID: <135406.9727.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
Look in the housewares section at Walmart, K-Mart, Target, etc. There are
all sorts of plastic containers for use in refrigerators and so forth. In
fact, I have found similar sized plastic containers in those $1 for
everything stores.
Glen, K9STH
Website: http://k9sth.com
--- On Wed, 2/24/10, Jeff Yanko <wb3jfs@xxx.xxx> wrote:
I'm in a project which needs plastic weatherproof box.? No holes in the box
would be ok since I can drill them, run the cables then seal it very well.
Looking for 10x10x4, 12x12x4.? I've checked Home Depot and they have
nothing.? Does anybody know would might carry such an item?
------------------------------
Message: 8
Date: Wed, 24 Feb 2010 15:55:11 +0000
From: Clive Wallis <amsat@xxxxx.xx.xx>
Subject: [amsat-bb] OSCAR-11 Report
To: ans-editor@xxxxx.xxxx Chris Jackson <C.Jackson@xxxx.xx.xx>,
M.Sweeting@xxxx.xx.xxx amsat <amsat-bb@xxxxx.xxx>
Message-ID: <4B854BDF.2080909@xxxxx.xx.xx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
OSCAR-11 REPORT
24 February 2010
This report covers the period from 11 January to 23 February 2010.
During this time the satellite was heard from 21 to 31 January and 11 to
24February. Good signals were received, and decoded. Signals have been
very strong, although frequent changes in polarisation have been
observed. The satellite has only transmitted when in sunlight.
The next transmissions are expected around 04 March 2010.
The on-board clock was 260 days slow, when last heard on 21 February.
The increasing error suggests that the clock may be stopping, when the
satellite is in eclipse. Sometimes, the date counter also fails to
increment.
Reception reports have been received from stations located all over the
world including Peter Zl3TC, Jon 2M0IBO, Mike DK3WN, Adrian LU1CBG,
Robert VE2PRS, Ken GW1FKY and Alan ZL2BX. Many thanks to everyone who
sent email reports, posted to AMSAT-BB or updated the KD5QGR/WB4APR
satellite status website.
The Beacon frequencies are -
VHF 145.826 MHz. AFSK FM ASCII Telemetry
UHF 435.025 MHz. OFF
S-band 2401.5 MHz. OFF
-------------
RECEPTION REPORTS REQUESTED!
I am particularly interested in reports of reception during the hours
23:00 to 06:00 and 12:00 to 17:00 UTC, especially near expected switch
on or off dates.
Please send reception reports to xxxxx@xxxxx.xxx (replace xxxxx by
g3cwv) or post to amsat-bb. If you have a file, please do not send it
but let me know what is available.
You may also like to add your reception report to the live satellite
status page, on the website set up by David KD5QGR and Bob WB4APR. The
URL is http://oscar.dcarr.org/index.php
The satellite transmits on 145.826 MHz., set receiver to NBFM. OSCAR-11
has a characteristic sound, rather like raspy slow morse code, sending
"di di dah dah dah dah dah dah dah" sent over five seconds. If you are
receiving a very weak signal, switch the receiver to CW or SSB. You
should hear several sidebands around the carrier frequency, and should
be able to hear the characteristic 'morse code like' sound on at least
one sideband.
Please note that you need a clean noise free signal to decode the signals.
There is an audio clip on my website www.g3cwv.co.uk which may be useful
for identification and as test signal for decoding.
-------------
The satellite is now subject to eclipses during every orbit. Long term
predictions indicate that eclipses will occur until 2019, when there
will be some eclipse free periods until 2023. However these very long
term predictions should be regarded with caution, as large tracking
errors can accumulate over long periods of time.
When eclipses started around 2005 the watchdog timer often switched the
transmitter off before the ten day on period had finished, during parts
of the
eclipse cycle. When eclipses became a permanent feature of all orbits,
after April 2008, the transmitter switched off within a single orbit,
thus the satellite was effectively non operational.
The satellite unexpectedly started regular transmissions in November
2009. It is possible that a fault has developed, which prevents the
watchdog timer resetting when the power supply fails. The transmitter
switches off during eclipses, and the real time clock stops during most
of the eclipse.
When analogue telemetry was last received, in 2005, it showed that one
of the solar arrays had failed, and there was a large unexplained
current drain on the main 14 volt bus. After 25 years in orbit the
battery has undergone over 100,000 partial charge/discharge cycles, and
observations indicate that it cannot power the satellite during eclipses.
The current status of the satellite, is that all the analogue telemetry
channels, 0 to 59 are zero, ie they have failed. The status channels 60
to 67 are still working. The real time clock is showing a large
accumulated error, although during ten minute passes the clock
increments correctly to within one second. The day of the month has a
bit stuck at 'one' so the day of the month may show an error of +40 days
for some dates. The time display has switched into 12 hour mode.
Unfortunately, there is no AM/PM indicator, since the time display
format was designed for 24 hour mode.
The spacecraft computer and active attitude control system have switched
OFF, ie. the satellite' attitude is controlled only by the passive
gravity boom gradient, and the satellite is free to spin at any speed.
The watchdog timer now operates on a 20 day cycle. The ON/OFF times have
tended to be very consistent. The average of many observations show this
to be 20.7 days, ie. 10.3 day s ON followed by 10.4 days OFF.
Listeners to OSCAR-11 may be interested in visiting my website. If you
need to know what OSCAR-11 should sound like, there is a short audio
clip for you to hear. The last telemetry received from the satellite is
available for download. The website contains an archive of news &
telemetry data which is updated from time to time. It also contains
details about using a soundcard or hardware demodulators for data
capture. There is software for capturing data, and decoding ASCII
telemetry. The URL is www.g3cwv.co.uk .
If you place this bulletin on a terrestrial packet network, please
use the bulletin identifier $BID:U2RPT147.CWV, to prevent duplication.
73 Clive G3CWV xxxxx@xxxxx.xxx (please replace xxxxx by g3cwv)
------------------------------
Message: 9
Date: Wed, 24 Feb 2010 08:47:39 -0800 (PST)
From: George Henry <ka3hsw@xxx.xxx>
Subject: [amsat-bb] Re: Plastic weatherproof box
To: AMSAT <amsat-bb@xxxxx.xxx>, wb3jfs@xxx.xxx
Message-ID: <696459.28961.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
Look?at an electrical supply house such as Grainger or Graybar...? those
sizes are common, and someplace like that should have them.
George, KA3HSW / WQGJ413
----- Original Message ----
> From: Jeff Yanko <wb3jfs@xxx.xxx>
> To: amsat-bb@xxxxx.xxx
> Sent: Wed, February 24, 2010 4:41:27 AM
> Subject: [amsat-bb] Plastic weatherproof box
>
> Hi all,
I'm in a project which needs plastic weatherproof box.? No
> holes in the box
would be ok since I can drill them, run the cables then
> seal it very well.
Looking for 10x10x4, 12x12x4.? I've checked Home
> Depot and they have
nothing.? Does anybody know would might carry such
> an item?
You can contact me off -bb.
73,
Jeff?
> WB3JFS
------------------------------
Message: 10
Date: Wed, 24 Feb 2010 09:06:04 -0800
From: Ron Miles <conimicut@xxxxx.xxx>
Subject: [amsat-bb] Re: AO-51 V/S
To: amsat-bb@xxxxx.xxx
Message-ID:
<ca0df3901002240906m4c56dad5p493a7da71934ef25@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Angelo and All:
Equipment here similar to Angelo's and perhaps common to many other
operators.
For S band downlink, I use the grill dish and the K5GNA AIDC 3731
downconverter
directly behind feed. Receive downlink at 145Mhz IF then feeds an FT897D.
RG6 coax works fine through a bias T for 13.8Vdc. S meter will easily reach
full scale. FT736R operates 2M uplink.
SATPC32 for doppler tuning and Unitrack for rotor G5500 control.
No desense issues or front end overload with this crossband operation.
For AO-40, I had a 3', off-set dish with helix feed for S band
operation. However,
that size dish had too much wind load.
Also, found in my brag file:
I use Keyspan and Prolific serial to USB adapters as these products seem to
handle
data packet transfer better than other adapters I've used. An Ultra 7 port
USB hub from Tigerdirect
handles the above operations as well as CAT control for all radios and PK232
TNC packet and Morse
code operation.
73, Ron, n6paa
***************
The equipment is very modest. A bbq grill dish 2x3 feet, the downconverter
is the K5GNA with RG-6 running about 50 feet long. No additional
preamp needed with the K5GNA downconverter. The noise level in the shack is
about S3. I use two rigs when operating the V/S mode.
With SatPC32, I have a second configuration setup. The IF is going to be rig
#1 (Kenwood TS-2000) which is connected to the K5GNA
downconverter. Rig #2 is connected to my ICOM 910 as the transmitter.
SATPC32 also control the rotor system with the G8LVB tracker
connected to the Yaesu G-5500.
The dish and downconverter I paid if I recalled correctly was about 175.00
plus shipping for K5GNA. I do not know if he still makes the
packages available anymore. I know he was waiting for Eagle or P3D to lauch
before he goes back to selling them.
Enjoy,
73 de Angelo
------------------------------
Message: 11
Date: Wed, 24 Feb 2010 09:07:30 -0800 (PST)
From: John Geiger <aa5jg@xxxxx.xxx>
Subject: [amsat-bb] FT857/ft897 on FM sats
To: amsat-bb@xxxxx.xxx
Message-ID: <221604.46818.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Is anyone on the list using a Yaesu FT857D or FT897D on the FM satellites?
If so, could you please email me direct as I have a couple of questions I
want to ask about them.
73s John AA5JG
------------------------------
Message: 12
Date: Wed, 24 Feb 2010 07:52:26 EST
From: Aa4mi@xxx.xxx
Subject: [amsat-bb] patch antenna for AO-51
To: amsat-bb@xxxxx.xxx
Message-ID: <26928.671c7a63.38b67b0a@xxx.xxx>
Content-Type: text/plain; charset="US-ASCII"
Can't find it on the UK web site. ???
------------------------------
Message: 13
Date: Wed, 24 Feb 2010 12:16:27 -0500
From: Stuart Balanger <wa2bss@xxxxx.xxx>
Subject: [amsat-bb] Next HV Satcom Group net nate
To: AMSAT-BB@xxxxx.xxx
Message-ID:
<632b880b1002240916r514ac073g56f502d4f90bcde9@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
*To all,
The next "HV Satcom Group net" date is Thursday March 4 2010 on the
146.97MHz.
repeater Time 8PM (EST) or 0100UTC (March 5)' & the echolink node is N2EYH-L
node More info: www.hvsatcom.org 73,.Stu
Ballinger (WA2BSS)
*
------------------------------
Message: 14
Date: Wed, 24 Feb 2010 19:50:40 +0000 (GMT)
From: "Trevor ." <m5aka@xxxxx.xx.xx>
Subject: [amsat-bb] Re: patch antenna for AO-51
To: amsat-bb@xxxxx.xxx
Message-ID: <454669.33737.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
--- On Wed, 24/2/10, Aa4mi@xxx.xxx <Aa4mi@xxx.xxx> wrote:
> Can't find it on the UK web
> site.? ? ? ???
Hardware page
http://www.uk.amsat.org/content/view/245/142/
G7HIA 2.4 GHz Patch Antenna Kit
http://www.uk.amsat.org/content/view/700/
73 Trevor M5AKA
------------------------------
_______________________________________________
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 94
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