Technical papers are solicited for presentation at the 26th Annual ARRL
and TAPR Digital Communications Conference to be held September 28-30,
2007 in Hartford, Connecticut. These papers will also be published in
the Conference Proceedings (you do NOT need to attend the conference to
have your paper included in the Proceedings). The submission deadline is
July 31, 2007. Please send papers to:
225 Main St
Newington, CT 06111
or you can make your submission via e-mail to: maty(a)arrl.org
Papers will be published exactly as submitted and authors will retain
73 . . . Steve, WB8IMY
Dear AMSAT friends
My pacsat station is for sale:
Kenwood TS-790A 144/432/1200 MHz transciever
with the following extras:
* UT-10 1200 MHz module
* Symek IFD-B board (for speed up to 76000 bd)
* extended rx (on 3 bands)
* 9600 baud tx/rx
* 100ms mute disabled
* IFD-B board (38400 baud rx)
* Hand microphone
* DC cable
* Instruction Manual (in english) include schematics
* External Control Instruction Manual (in english)
* Modifications documentation (in english)
All mods were performed by me and no holes were done.
This equipment was bought new (1997), and until now
there was not a single problem! It was kept on a non
Cosmetic is a 8/10 (one minor dent, sort of paint bubble
and 4 rotator control box feet "stain", all on top cover)
Unfortunatly I don't have the original box anymore. Sorry
TNC Symek TNC31S
* Tx 9600/Rx 38400 baud card
* 128kb RAM
* 512kb Flash-EPROM
* English mailbox
* Kiss autostart
* RS232 cable plus adapter (DB9)
* DC cable
* Diskette with software
* Original Manuals (english and german)
This TNC was bought new (2000), and was used on UO-36
and Tiungsat-1 with great sucess. I did't use it since
a long time ago, but I belive it's 100% operational.
Cosmetic is 9/10.
I will only sale the 2 items together. Price: 1500 Euro
Buyer pays shipping.
Euro countries: Bank money transfer only!
Elsewhere: Western Union or PayPal.
Photos: please visit http://ct1eatsale.no.sapo.pt/
Thanks for your attention.
See you on P3E or Eagle.
73 F.Costa, CT1EAT
Excellent advice Tom. Let me add a few things if you don't mind. If you cannot implement full doppler computer tuning, the next best practice is to tune the higher frequency, in this case the uplink. Use full duplex and the minimum power required. VO-52 is quite sensitive and overloads easily; expect this to be the norm on FD.
Don't forget AO-7. It could be in either Mode U/V (aka Mode B) or Mode V/A (aka Mode A). FO-29 may also be back in time for FD, we just don't know. I expect the majority of points to be made on the transponder satellites; please observe the one QSO per FM repeater rule (1 via AO-27 and SO-50, and 1 each via the L/U and V/U repeaters on AO-51).
For the true diehard satellite operator there is AO-16! The 1200 baud BPSK downlink is easily decoded with MixW soundcard software, and the uplink requires Manchester FSK at 1200 baud. This is the tough part. QSOs can be completed via digipeating through the satellite, but the BBS is non-operative.
GO-32 is a good bet too if the BBS is up and running.
Good Luck on Field Day!
73, Drew KO4MA
AMSAT-NA VP Operations
>From: Thomas McDaniel <tmcdanielsprint(a)earthlink.net>
>Sent: Jun 3, 2007 8:44 PM
>To: kc6uqh <kc6uqh(a)cox.net>, AMSAT-BB <amsat-bb(a)amsat.org>
>Subject: [amsat-bb] Re: VO-52
>I don't know of a site for this satellite with operating information.
>However, this is what used to be called a Mode B satellite -- 70 CM LSB
>uplink and 2 Mtrs USB downlink with a reverse transponder. Because the
>satellite is in a very low orbit I highly recommend a computer controlled
>transceiver (FT-847, IC-910, TS-2000 or etc.) and SatPC32 (you can get a
>free download to test with from Eric's web site:
>http://www.dk1tb.de/indexeng.htm ). We generally use the "one true rule,"
>that is computer control both up and down link to stay in one spot on the
>For antennas, we will be using RH circular beams and automatic tracking, but
>I expect you could use an Arrow type antenna with someone manually pointing
>in the general direction -- turnstiles, egg beaters or other omnis may work
>ok but I haven't tried them.
>Finally, practice before Field Day to "work out the bugs" is highly
>73 Tom n0ntx
>AMSAT Area Coordinator
>Colorado Springs, CO
>----- Original Message -----
>From: "kc6uqh" <kc6uqh(a)cox.net>
>To: "AMSAT-BB" <amsat-bb(a)amsat.org>
>Sent: Sunday, June 03, 2007 12:45 PM
>Subject: [amsat-bb] VO-52
>>I am considering using VO-52 for Field Day. Could anyone direct me to a
>>site with operating information, not bragg tapes on this satellite. I
>>found the Indian site but I could not find any real technical information.
>>The AMSAT frequency guide mentions both Indain and Dutch transponders shows
>>only one set of frequencies and no suggestion as to USB tX or RX does
>>indicate U TX and V receive. Uses turnstile antennas, Rh or Lh Circular?
>> Sent via AMSAT-BB(a)amsat.org. 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
>> No virus found in this incoming message.
>> Checked by AVG Free Edition.
>> Version: 7.5.472 / Virus Database: 269.8.7/830 - Release Date: 6/3/2007
>> 12:47 PM
>Sent via AMSAT-BB(a)amsat.org. 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
Now that field day is over, I hope everyone that participated had as
much fun as they had expected. There is just one more thing to do. Be
sure to send in your results and photos.
If you are going to send via email (the preferred method), I will
confirm that I have received your email (give me a day or two). If you
do not get the confirmation, then something happened and you should
The deadline for receiving your submission (either email or postal mail)
for AMSAT Field Day is Monday, July 16, 2007 at 11:59 P.M. CDT.
Bruce Paige, KK5DO
AMSAT Director Contests and Awards
ARRL Awards Manager (WAS, 5BWAS, VUCC), VE
Houston AMSAT Net - Wed 0100z on W0KIE Intelsat Americas, T1, 6.2/6.8Mhz
Also streaming MP3 at http://www.amsatnet.com
Latest satellite news on the ARRL Audio News
There appears to be a problem with the Full Catalog at Space-Track.org.
The file "catalog_3l_2007_06_21_pm.txt" contains no data at all. Be
careful when downloading, as you may wipe out your previous Keplerian
Michael R. Owen, Ph.D.
Northern Lights Software Associates
What is the simplest auto track software/hardware combination for auto tracking a G5400? I am a non "digi" type and am looking for simple plug and play. I can use IT or SatPac32. Tracking these LOE's when using S band is difficult.
73 Bob W7LRD
AMSAT member 28498
I'm experimenting with Predict-2.2.3 , running under Ubuntu 7.04. IIRC
about a year ago there was a discussion about problems controlling the
LVB tracker, with Predict.
Were these problems ever resolved? What is the best Predict client to
drive the LVB?
Any help would be grately appreciated.
Hitchin, North Hertfordshire, UK.