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CX2SA > SATDIG 08.05.10 20:06l 871 Lines 29574 Bytes #999 (0) @ WW
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To : SATDIG@WW
Today's Topics:
1. Fwd: [Sumbandila: 250] Digest for sumbandila@xxxxxxxxxxxx.xxx
- 3 Messages in 1 Topic (Chris Bloy)
2. WC7V/P DN44, Wyoming (kladuke1144@xxx.xxxx
3. Fw: WC7V/P DN44, Wyoming (kladuke1144@xxx.xxxx
4. High Altitude Balloon Challenge for folks in Northern MT,
Northern ND and NW MN, Western MB, Eastern AB and SK (Alan)
5. Arecibo on 432 MHz Moon Bounce (some calculations) (i8cvs)
6. thanks (Larry Gerhardstein)
7. Re: Arecibo on 432 MHz Moon Bounce (some calculations)
(Miguel A. Vallejo)
8. Re: AO-51 update (Mateusz)
9. AO-51 (Matt)
10. cal amp 130194 (Bob- W7LRD)
11. New Kenwood D-72 (Andrew Glasbrenner)
12. Re: New Kenwood D-72 (Nigel Gunn G8IFF/W8IFF)
13. Re: New Kenwood D-72 (Alan P. Biddle)
14. Re: New Kenwood D-72 (Andrew Glasbrenner)
15. L and S-band Options (Guy Brauning)
16. WD9EWK @ DM32/DM42 today, 2330-0240 UTC
(Patrick STODDARD (WD9EWK/VA7EWK))
17. Next "HV Satcom" net! (Stuart Balanger)
18. Re: L and S-band Options (Alan P. Biddle)
19. Re: New Kenwood D-72 (Jeff KB2M)
----------------------------------------------------------------------
Message: 1
Date: Fri, 7 May 2010 20:20:39 +0100
From: Chris Bloy <chris@xxxxxxxxxxx.xx.xx>
Subject: [amsat-bb] Fwd: [Sumbandila: 250] Digest for
sumbandila@xxxxxxxxxxxx.xxx - 3 Messages in 1 Topic
To: <amsat-bb@xxxxx.xxx>
Message-ID: <49709.1273260039@xxxxxxxxxxx.xx.xx>
Content-Type: text/plain; charset="utf-8"
BODY { font-family:Arial, Helvetica, sans-serif;font-size:12px; }
Hi All,
Please see news posted by Sumbandila :-
----- Original Message -----
From: sumbandila+noreply@xxxxxxxxxxxx.xxx
To: Digest Recipients sumbandila+digest@xxxxxxxxxxxx.xxx
Sent: Fri 07/05/10 19:39
Subject: Fwd: [Sumbandila: 250] Digest for
sumbandila@xxxxxxxxxxxx.xxx - 3 Messages in 1 Topic
Today's Topic Summary
Group: http://groups.google.com/group/sumbandila/topics [1]
*[Sumbandila: 247] Sumbandila amateur radio schedules [2] [3
Updates]
Topic: [Sumbandila: 247] Sumbandila amateur radio schedules [3]
Eddie ZS6BNE May 07 03:49AM -0700 ^ [4]
Hi guys,
What?s happening amateur radio wise on Sumbandilasat lately? It
would
be really great to see some amateur radio activity schedules again!
I?m in the process of writing the ?Amateur Radio in Space?
[ARiS]
column for Radio ZS and I?d really like to write of some good
news.
73 Eddie ZS6BNE
"Jan-Albert Koekemoer" May 07 01:34PM +0200 ^ [5]
Hello
We've indeed have a long "radio silence" now. Some good news is that
we're
reprogramming the command transceiver on the satellite used by the
SA-AMSAT
payload (CTR-VU2) tonight. This will hopefully sidestep the issue
we've had
with the cut-off at the PTT tail. The idea is to keep the PTT active
for the
15 minute duration that the SA-AMSAT payload will be active at a
time, i.e.
uncouple the PTT functionality from the rest of the SA-AMSAT payload
functions.
We will then make sure it works as expected (hopefully first half of
next
week) and if all goes well, aim to have the payload fully
operational and in
service again by the end of the week.
With some unexpected hiccups on the satellite, the commissioning
took longer
than expected. We've already completed the initial transfer of
operations to
SAC (March) and will be completing the training of their Mission
Specialists
this coming Mon - Wed. We should then be in a position to have >95%
of
mission operations in place at SAC.
SunSpace will continue to provide expert support for the duration of
the
satellite lifetime.
Thank you for your patience!
Regards
JA
-----Original Message-----
From: sumbandila@xxxxxxxxxxxx.xxx
[mailto:sumbandila@xxxxxxxxxxxx.xxxx On
Behalf Of Eddie ZS6BNE
Sent: 07 May 2010 12:49 PM
To: Sumbandila satellite
Subject: [Sumbandila: 247] Sumbandila amateur radio schedules
Hi guys,
What's happening amateur radio wise on Sumbandilasat lately? It
would
be really great to see some amateur radio activity schedules again!
I'm in the process of writing the "Amateur Radio in Space' [ARiS]
column for Radio ZS and I'd really like to write of some good news.
73 Eddie ZS6BNE
E-mail Disclaimer
http://www.sunspace.co.za/emaildisclaimer.htm [6]
May 07 01:39PM +0200 ^ [7]
Eddie see SARLNEWS for last Sunday
SUMBANDILASAT SOON BACK IN AMATEUR RADIO MODE
SA AMSAT announced that SumbandilaSat will soon be back in the
Amateur Radio
Mode. Currently Sunspace will re-program CR2 with a fix for the SA
AMSAT
PTT problem . This is expected to be completed by mid May.
Programming of the Amateur Radio Payload will in future be carried
out by
the CSIR Satellite Application Centre at Hartebeeshoek. SA AMSAT
will work
with SAC to coordinate operational requests. More details on how to
request
operation will be announced in the next two weeks and published on
www.amsatsa.org.za.
We will not be using googlegroups.
Eddie
I am in the process of updating www.amsatsa.org.za. the request for
areas
to be included in the schedule, special events etc will have to be
sent to
saamsat@xxxxxxx.xx.xx by Mondays . SA AMSAT will coordinate with SAC
and
publish a schedule for the following week during Friday.
Currently Jan-Albert is testing the PTT software change.
Hans.
Hans van de Groenendaal
Features Editor EngineerIT
012 991 4662
082 781 4631
----- Original Message -----
From: "Eddie ZS6BNE"
To: "Sumbandila satellite"
Sent: Friday, May 07, 2010 12:49 PM
Subject: [Sumbandila: 247] Sumbandila amateur radio schedules
Hi guys,
What?s happening amateur radio wise on Sumbandilasat lately? It
would
be really great to see some amateur radio activity schedules again!
I?m in the process of writing the ?Amateur Radio in Space?
[ARiS]
column for Radio ZS and I?d really like to write of some good
news.
73 Eddie ZS6BNE
Links:
------
[1] http://groups.google.com/group/sumbandila/topics
[2] http://webmail.photofuture.co.uk/#group_thread_0
[3] http://groups.google.com/group/sumbandila/t/23e786bb1df9e220
[4] http://webmail.photofuture.co.uk/#digest_top
[5] http://webmail.photofuture.co.uk/#digest_top
[6] http://www.sunspace.co.za/emaildisclaimer.htm
[7] http://webmail.photofuture.co.uk/#digest_top
------------------------------
Message: 2
Date: Fri, 7 May 2010 13:44:25 -0600
From: <kladuke1144@xxx.xxx>
Subject: [amsat-bb] WC7V/P DN44, Wyoming
To: <amsat-bb@xxxxx.xxx>
Message-ID: <COL117-DS14C135268DC24C43662860BCF60@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
All,
My plan is to operate portable from Mammoth, Yellowstone Park,
Wyoming (DN44) from 1400Z to about 2210Z on Saturday May 8, 2010. I logged
33 contacts on May 5 from this grid and look forward to another successful
operation.
73
WC7V
Kerry
------------------------------
Message: 3
Date: Fri, 7 May 2010 14:21:31 -0600
From: <kladuke1144@xxx.xxx>
Subject: [amsat-bb] Fw: WC7V/P DN44, Wyoming
To: <amsat-bb@xxxxx.xxx>, "Seattle, Wa W7LRD / Bob"
<w7lrd@xxxxxxx.xxx>
Message-ID: <COL117-DS919B1794CDEAA6FB01CF7BCF60@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
The satellites I will be working are ao51 starting at about 1400Z and the
first ao27 pass at about 1800Z. There are several passes during the day
for both birds until I depart at about 2210Z.
73
WC7V
Kerry
(thanks Bob)
From: kladuke1144@xxx.xxx
Sent: Friday, May 07, 2010 1:44 PM
To: amsat-bb@xxxxx.xxx
Subject: WC7V/P DN44, Wyoming
All,
My plan is to operate portable from Mammoth, Yellowstone Park,
Wyoming (DN44) from 1400Z to about 2210Z on Saturday May 8, 2010. I logged
33 contacts on May 5 from this grid and look forward to another successful
operation.
73
WC7V
Kerry
------------------------------
Message: 4
Date: Fri, 7 May 2010 15:56:48 -0500
From: "Alan" <ve4yz@xxxxxxx.xxx>
Subject: [amsat-bb] High Altitude Balloon Challenge for folks in
Northern MT, Northern ND and NW MN, Western MB, Eastern AB and SK
To: <amsat-bb@xxxxx.xxx>
Cc: "VE5RGM, Bob" <rgmeldrum@xxxxx.xxx>
Message-ID: <BAY110-DS3E4BC6E9EE7FFB8BD8B7CEBF60@xxx.xxx>
Content-Type: text/plain; charset="us-ascii"
VHF repeater for y'all to try between satellite passes Saturday morning
14:00 UTC - point your yagi toward Saskatoon SK
http://ve5aa.dyndns.org/Balloon/sabre_9.html
Enjoy...
73, Alan VE4YZ
EN19kv
AMSAT LM 2352
http://www.wincube.ca
------------------------------
Message: 5
Date: Fri, 7 May 2010 23:58:05 +0200
From: "i8cvs" <domenico.i8cvs@xxx.xx>
Subject: [amsat-bb] Arecibo on 432 MHz Moon Bounce (some
calculations)
To: "AMSAT-BB" <amsat-bb@xxxxx.xxx>
Message-ID: <00dd01caee30$5f317c80$0201a8c0@xxx.xx>
Content-Type: text/plain; charset="iso-8859-1"
Hi All,
I have received an email from Daniel Esteban LU2DDU informing me that
about the Arecibo radiotelescope he was in touch with Victor KP4PQ in order
to get from him more details about the feed line running from the operating
site up to the feed.
Victor says to Daniel that for 432.045 MHz they were using an existing wave
guide with the larger side 23" high ( 58 cm ) and 1500 ' long ( about 457
meters long) with a loss of 1 to 1.2 dB i.e. about 1.32 time in power ratio
at 432 MHz
Please note that the size of the above wave guide can be compared to the air
duct of an air conditioning system normally used into a big industrial shed.
Considering that the power amplifier was running at best 350 watt it follows
that the power reaching the feed was 350 / 1.32 = 265 watt
Since the gain of the Arecibo dish is 60 dB or 1000000 time in power ratio
it follows that the Arecibo EIRP was 265 MW
Tanks to Daniel LU2DDU and Victor KP4PQ for the above information.
Best 73" de
i8CVS Domenico
------------------------------
Message: 6
Date: Fri, 07 May 2010 22:49:09 -0600
From: Larry Gerhardstein <gerhardstein@xxxxxxx.xxx>
Subject: [amsat-bb] thanks
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Cc: W7IN <W7IN@xxxxxxx.xxx>
Message-ID: <4BE4ED45.5000209@xxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Greetings,
I want to thank all of the good folks who helped me get my satellite
station on the air. This has been a process since about last fall. We
were gone during the winter and restarted the project when I returned
home. I'd like to recognize W4AS, K7WIN, PE0SAT, KB7ADL, K0VTY, N6NKF,
Scott Hagerman (non ham), AA5PK, K6LCS, G8IFF, certainly others ... and
most of all Erich DK1TB, author of SatPC32, who spent much time
researching drivers, answering questions, and attempting to duplicate
problems I have been having.
A few lessons learned... from all this.
1) Don't jump to conclusions. My rotor control spent about 3 months at
Yaesu service only to learn nothing wrong with it. The technician at
Yaesu never suggested the trouble could be fixed by optical isolation of
the RS232 line going to the rotor control box.
2) Do not assume the nature of a RS232 cable. Use an ohm meter and
determine if it is good or bad, straight through or cross-over or
null-modem. If I had started out using the ohm meter on my cables, that
would have saved me much time and frustration. Both GS-232 and CI-17
call for straight through serial cables. I made the mistake of using
two null modem cables; unfortunately I did not know they were not
straight through until later when I thought to use an ohm meter.
3) Don't assume you can construct a straight through RS232 cable by
connecting two null modem cables in series. This may work, and it may not.
4) Before installing optical isolators in the RS232 lines, make certain
the devices are compliant with the isolators. I tried optical isolation
in both the rotor control and the rig control lines. An isolation
device between computer and GS232 rotor interface was needed. However,
the CI-17 does not like them.
5) The optical isolators from CF that I used seem to have polarity.
Make certain the female end of the isolator is against the computer's
male connector. Do not turn the isolator around and use sex-changers
between computer and isolator. This was just a random thing I tried....
it did not work.
6) When running into difficulty as I did, document everything. I kept
repeating the same trials over and over, wasting time, and about driving
myself to madness.
7) In my opinion when using Windows 7 of Vista 64-bit, only install
drivers designed for those systems. Drivers for 32-bit are not reliable
in 64-bit applications and may cause the computer to crash to blue screen.
8) Before ordering USB to serial conversion devices make certain the
drivers that come with those gadgets are compatible with the computer
operating system you plan to use. Many days after I received my KeySpan
device, I called Tripp Lite. The sales person there told me they do not
presently have a 64-bit driver for the USA49WG. Wish I had known that.
9) Make sure the baud rate in the transceiver matches the baud rate
being set up in the CAT setup menu. If you can affort it, get a RS232
serial data analyzer. I downloaded the free version of 232Analyzer.
Full version is about $140. 232Analyzer helped a lot and allowed me to
see both data transmitted and received. This led me to the mismatched
baud rates in the ICOM and SatPC32.
These are the issued I stumbled on. Different computer hardware,
different ham gear, different operating systems may produce different
results. Beware of Murphy.
73, Larry W7IN
------------------------------
Message: 7
Date: Sat, 08 May 2010 01:14:35 +0200
From: "Miguel A. Vallejo" <ea4eoz@xxxxx.xx>
Subject: [amsat-bb] Re: Arecibo on 432 MHz Moon Bounce (some
calculations)
To: amsat-bb@xxxxx.xxx
Message-ID: <4BE49EDB.7010802@xxxxx.xx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
i8cvs wrote:
> Hi All,
>
> I have received an email from Daniel Esteban LU2DDU informing me that
> about the Arecibo radiotelescope he was in touch with Victor KP4PQ in order
> to get from him more details about the feed line running from the operating
> site up to the feed.
>
> Victor says to Daniel that for 432.045 MHz they were using an existing wave
> guide with the larger side 23" high ( 58 cm ) and 1500 ' long ( about 457
> meters long) with a loss of 1 to 1.2 dB i.e. about 1.32 time in power ratio
> at 432 MHz
>
> Please note that the size of the above wave guide can be compared to the air
> duct of an air conditioning system normally used into a big industrial shed.
For those interested to see that waveguide, see this message posted in
the moon-net reflector some time ago.
Enjoy!
Miguel A. Vallejo, EA4EOZ
========================================================================
Hello Jim, and all,
I have begun assembling my large photo collection at Arecibo taken the
last week/EOA event Weekend at Arecibo.
Assembled here are some photos focusing on the Arecibo 432 Feed, coax,
to Waveguide transition, and waveguide running the approximately 1500 ft
to the line feed "stinger" feed antenna that brings the line image
formed by the main circular surface to a point source.
The "stinger" line array feed is about 100 ft long from base to tip.
I think Jim Breakall and Joe, were thinking along the lines of .7 to 1
db total loss in the waveguide.
http://cid-2eb5c45df634a712.skydrive.live.com/browse.aspx/ARECIBO%20432%20FEED
Best Regards,
73, de Pat Barthelow AA6EG; Echoes of Apollo/Arecibo
Arecibo Video Tours:
http://www.youtube.com/watch?v=vicxDnn6LEY
http://www.youtube.com/watch?v=7rFeXsVz8hE&NR=1
"The most exciting phrase to hear in Science, the one that heralds
new discoveries, is not "Eureka, I have found it!" but:"That's
funny..." ----Isaac Asimov
------------------------------
Message: 8
Date: Sat, 8 May 2010 08:27:33 +0200
From: "Mateusz" <sq7dqx@xxxxxx.xxxx.xx>
Subject: [amsat-bb] Re: AO-51 update
To: <amsat-bb@xxxxx.xxx>
Message-ID: <CD4286945A0C4F28A946D936A073515A@xx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
AO-51 beetwen 7:15 - 7:23 UTC was not heard at all on 435.300+/- dopp
Did I miss something or it was really not active?
SQ7DQX
------------------------------
Message: 9
Date: Sat, 8 May 2010 08:31:12 +0200
From: "Matt" <mateuszpigon@xxxxxx.xxxx.xx>
Subject: [amsat-bb] AO-51
To: <amsat-bb@xxxxx.xxx>
Message-ID: <8EBCD56373AC4D8594C999BD4C612369@xx>
Content-Type: text/plain; format=flowed; charset="iso-8859-2";
reply-type=original
Sorry, it was not heard because it wasnt over Europe ... I miss 1 hour on my
computer clock again.
SQ7DQX
------------------------------
Message: 10
Date: Sat, 8 May 2010 06:51:54 +0000 (UTC)
From: Bob- W7LRD <w7lrd@xxxxxxx.xxx>
Subject: [amsat-bb] cal amp 130194
To: amsat-bb@xxxxx.xxx
Message-ID:
<1977598070.15055471273301514640.JavaMail.root@xxxxxxx.xxxxxxxxxx.xx.xxxx.xxxx
xxx.xxx>
Content-Type: text/plain; charset=utf-8
Does anyone have any information on the Cal Amp 130194.? I would like to
convert it for S band.
73
Bob W7LRD
------------------------------
Message: 11
Date: Sat, 8 May 2010 09:18:50 -0400 (GMT-04:00)
From: Andrew Glasbrenner <glasbrenner@xxxxxxxxxx.xxx>
Subject: [amsat-bb] New Kenwood D-72
To: amsat-bb <amsat-bb@xxxxx.xxx>
Message-ID:
<5639064.1273324730990.JavaMail.root@xxxxxxxxxxxxxx.xxx.xx.xxxxxxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
I spotted this on QRZ this morning...details are skimpy now though. I wonder
if it'll be full duplex? The D7 has a really good full duplex implementation.
73, Drew KO4MA
------------------------------
Message: 12
Date: Sat, 08 May 2010 13:52:42 +0000
From: Nigel Gunn G8IFF/W8IFF <nigel@xxxxx.xxx>
Subject: [amsat-bb] Re: New Kenwood D-72
To: Andrew Glasbrenner <glasbrenner@xxxxxxxxxx.xxx>
Cc: amsat-bb <amsat-bb@xxxxx.xxx>
Message-ID: <4BE56CAA.3070907@xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8; format=flowed
This from the Kenwood.co.jp site.
HF/50MHz All-Mode Transceiver - TS-590S (tentative naming)
Featuring a 32-bit floating-point DSP, the TS-590S will offer advanced
receiver performance and an extensive range of
features that make it ideal for beginner and seasoned DX?er alike. The
radio?s exceptional ease of operation, true to
the Kenwood tradition, will be especially welcome for contest and mobile
applications.
144/430MHz Dual Band FM Portable - TH-D72 (tentative naming)
The APRS? capability found on Kenwood?s TH-D7* and TM-D710 has been upgraded
for the TH-D72. Thanks also to the internal
GPS unit, APRS operations will be more enjoyable than ever. The TH-D72 also
offers EchoLink? memory compatibility and a
mini-USB connector for enhanced computer connectivity. This transceiver is
sure to make ham radio operations easier and
more fun for all.
* For overseas model/Discontinued model
Anyone interested in these two models will be able to view product samples at:
Dayton Hamvention 2010 (Dayton, Ohio, USA, May 14-16), and
HAM RADIO 2010 (Friedrichshafen, Germany, June 25-27).
------------------------------
Message: 13
Date: Sat, 8 May 2010 09:12:46 -0500
From: "Alan P. Biddle" <APBIDDLE@xxxxxx.xxx>
Subject: [amsat-bb] Re: New Kenwood D-72
To: "'amsat-bb'" <amsat-bb@xxxxx.xxx>
Message-ID: <A55803AFE7E94C4985AA0CEBFC8CB590@xxxxxx>
Content-Type: text/plain; charset="us-ascii"
Last year at Dayton, where it was not so much announced as broadly hinted
at, I asked and was told that it was planned to have all the satellite
functions of the D7, plus a thorough modernization for components and
features. It will be interesting to see whether they deliver on that.
After being burned with the Alinco last year, I will hold off on ordering
one to get some operational reports. ;)
Alan
WA4SCA
------------------------------
Message: 14
Date: Sat, 08 May 2010 11:02:31 -0400
From: Andrew Glasbrenner <glasbrenner@xxxxxxxxxx.xxx>
Subject: [amsat-bb] Re: New Kenwood D-72
To: APBIDDLE@xxxxxxx.xxx
Cc: 'amsat-bb' <amsat-bb@xxxxx.xxx>
Message-ID: <4BE57D07.4050204@xxxxxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Alan P. Biddle wrote:
> After being burned with the Alinco last year, I will hold off on ordering
> one to get some operational reports. ;)
>
Between the G7's non-functional full duplex and the battery that decided
to brick itself after a day inside my car during the summer, I'm with
you. Maybe.
73, Drew KO4MA
------------------------------
Message: 15
Date: Sat, 8 May 2010 12:09:26 -0400
From: "Guy Brauning" <guyjeanbraun@xxxxxxx.xxx>
Subject: [amsat-bb] L and S-band Options
To: <amsat-bb@xxxxx.xxx>
Message-ID: <000001caeec8$d5357240$7fa056c0$@xxx>
Content-Type: text/plain; charset="us-ascii"
Thanks for reading this message. I know there has been a lot of information
on the BB over the past couple of years about operating L and S band on
AO-51; however, I was focused on V/U at the time and I didn't make notes of
the information. Now I would like to experiment with these two bands and I
am looking for some recommendations to get started. Is the Alinco DJ-G7T a
viable option for receiving the AO-51 L-band downlink (Pricey at $320.00 but
it does cover 3 satellite bands with advertised full-duplex capability)? If
not (and ruling out the more expensive (and effectively non-portable)
transceivers.. TS-2000 / IC-910H, etc.), what would be the least expensive
way to have receive capability on 1.2 Ghz... a down-converter perhaps? (I
currently have a Yaesu FT-60R dual band HT and a Yaesu FT-817D along with
the Arrow and ELK antennas for V/U) Also, what are some options for
homebrew 1.2 Ghz antennas (I do not have sophisticated test equipment and my
"Skills" are minimal)? On to 2.4 Ghz.... what are some options for
inexpensive 2.4 Ghz down-converters (As a reference..I do not consider the
SSB UEK-3000 inexpensive at $500.00) and homebrew antennas? I would like to
be able to experiment with handheld / portable gear in the yard to gain some
experience with these two bands.
Guy Brauning
N3SCR
guyjeanbraun@xxxxxxx.xxx
------------------------------
Message: 16
Date: Sat, 8 May 2010 09:16:19 -0700 (PDT)
From: "Patrick STODDARD \(WD9EWK/VA7EWK\)" <amsat-bb@xxxxxx.xxx>
Subject: [amsat-bb] WD9EWK @ DM32/DM42 today, 2330-0240 UTC
To: amsat-bb@xxxxx.xxx
Message-ID: <69362.53612.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Hi!
Since I didn't send anything out yet regarding my trip last
weekend to southeastern Arizona for a hamfest and my stop at
DM52/DM53 (along with a very quick stop at DM51/DM52), thanks
to all who showed up during those passes. I know DM53 is
particularly rare on the birds, and a change in work schedules
let me take last Friday (30 April) off for the drive to that
boundary. The hamfest in Sierra Vista AZ was a good event, and
thanks to all who worked WD9EWK on the 4 passes using 4
different satellites from the hamfest site. QSL cards for last
weekend's activities went to the post office a few days ago,
and should be showing up in mailboxes shortly.
There is a window of approximately 3 hours later this afternoon
where I can work AO-51, SO-50, FO-29, and AO-7 with relatively
short gaps between all of those passes. My plan is to go south
of Phoenix to the DM32/DM42 grid boundary and work passes on
those 4 satellites starting with AO-51 at 2330 UTC and possibly
stay out there through the last AO-7 pass that has LOS around
0240 UTC. I go out there periodically, and a couple of operators
have recently asked me when I would make another trip to DM32.
The northeast corner of DM32 is less than an hour's drive from
Phoenix, so I decided to make the quick trip this afternoon.
Anyone working WD9EWK from the DM32/DM42 grid boundary who would
like a QSL only needs to drop me an e-mail. If you're in the log,
I will get you a card. If I've never worked you before, I would
appreciate receiving your QSL card for the QSO, as this location
is within the area that I can use toward a satellite VUCC
application - if I ever get around to filling out the paperwork
and sorting the cards. :-)
73!
Patrick WD9EWK/VA7EWK
http://www.wd9ewk.net/
------------------------------
Message: 17
Date: Sat, 8 May 2010 13:43:38 -0400
From: Stuart Balanger <wa2bss@xxxxx.xxx>
Subject: [amsat-bb] Next "HV Satcom" net!
To: amsat-bb@xxxxx.xxx
Message-ID:
<u2v632b880b1005081043m15bf8a9eo7cc0977e31169d18@xxxx.xxxxx.xxx>
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*Hi all,
The next "HV Satcom" net is this coming Thursday May 13 on the "146.970"
MMt. Beacon ARC Repeater& hope the Echo link note of "N2EYH-L" will be
operating
& the time of the net is: 8PM EDT (or 2400UTC) 73,.Stu
(WA2BSS)
*
------------------------------
Message: 18
Date: Sat, 8 May 2010 13:34:12 -0500
From: "Alan P. Biddle" <APBIDDLE@xxxxxx.xxx>
Subject: [amsat-bb] Re: L and S-band Options
To: "'Guy Brauning'" <guyjeanbraun@xxxxxxx.xxx>
Cc: AMSAT-BB <amsat-bb@xxxxx.xxx>
Message-ID: <6510640C1FB44051AEC9B06D02A1B589@xxxxxx>
Content-Type: text/plain; charset="us-ascii"
Guy,
Mode-L is not authorized for transmission FROM a spacecraft, only TO one.
So you only need TX capability. Of course the rigs you mentioned will give
you the needed TX capability. A cheaper way would be to find a used
transverter. Note that unless it was designed for satellite use, it will
probably need new crystals and tuning. In principle an HT which covers
mode-L, combined with an amp and good antenna, would work for an uplink.
However, the Doppler shift is so large, and changes so rapidly, that you
need computer control. It CAN be done without that, but it is painful for
you, and more painful for the people you might work.
A helical antenna, easily made and uncritical, can be made for either mode-L
or mode-S for a few dollars. Likewise, there are still a few of the old MDS
converters around. AO-51 has a very loud downlink, and can even be heard on
a simple patch antenna without a dish, or a short Yagi.
Alan
WA4SCA
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Guy Brauning
Sent: Saturday, May 08, 2010 11:09 AM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] L and S-band Options
Thanks for reading this message. I know there has been a lot of information
on the BB over the past couple of years about operating L and S band on
AO-51; however, I was focused on V/U at the time and I didn't make notes of
the information. Now I would like to experiment with these two bands and I
am looking for some recommendations to get started. Is the Alinco DJ-G7T a
viable option for receiving the AO-51 L-band downlink (Pricey at $320.00 but
it does cover 3 satellite bands with advertised full-duplex capability)? If
not (and ruling out the more expensive (and effectively non-portable)
transceivers.. TS-2000 / IC-910H, etc.), what would be the least expensive
way to have receive capability on 1.2 Ghz... a down-converter perhaps? (I
currently have a Yaesu FT-60R dual band HT and a Yaesu FT-817D along with
the Arrow and ELK antennas for V/U) Also, what are some options for
homebrew 1.2 Ghz antennas (I do not have sophisticated test equipment and my
"Skills" are minimal)? On to 2.4 Ghz.... what are some options for
inexpensive 2.4 Ghz down-converters (As a reference..I do not consider the
SSB UEK-3000 inexpensive at $500.00) and homebrew antennas? I would like to
be able to experiment with handheld / portable gear in the yard to gain some
experience with these two bands.
Guy Brauning
N3SCR
guyjeanbraun@xxxxxxx.xxx
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------------------------------
Message: 19
Date: Sat, 8 May 2010 14:51:13 -0400
From: "Jeff KB2M" <kb2m@xxxxxxx.xxx>
Subject: [amsat-bb] Re: New Kenwood D-72
To: "'amsat-bb'" <amsat-bb@xxxxx.xxx>
Message-ID: <01ca01caeedf$6e99a080$4bcce180$@xxx>
Content-Type: text/plain; charset="us-ascii"
I asked Kenwood rep, and was told at Dayton last year that it was going to
be full duplex like the D7. Maybe there will be an operational model on the
floor this year. If so we need to try and verify full duplex. See you guys
at Dayton!...
73 Jeff kb2m
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Alan P. Biddle
Sent: Saturday, May 08, 2010 10:13 AM
To: 'amsat-bb'
Subject: [amsat-bb] Re: New Kenwood D-72
Last year at Dayton, where it was not so much announced as broadly hinted
at, I asked and was told that it was planned to have all the satellite
functions of the D7, plus a thorough modernization for components and
features. It will be interesting to see whether they deliver on that.
After being burned with the Alinco last year, I will hold off on ordering
one to get some operational reports. ;)
Alan
WA4SCA
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------------------------------
_______________________________________________
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 211
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