Re: New AO-51 Whole Orbit Data decoder released by DK3WN
Hi Luc,
TLMEcho is the program for LIVE decoding of AO-51 telemetry packets during a pass. Some telemetry channels are sent via 9600 baud packet at a regular interval, usually 10 seconds, and TLMEcho can decode these (using a 9600 baud modem) LIVE as they are coming down.
The new WOD decoder is different--it is used to decode satellite telemetry data collected (more channels usually) and stored on the satellite during a whole orbit (usually set for 24 hours). Once the WOD file is finished, it appears on the PBBS and can be downloaded via WISP. The downloaded WOD file can then be decoded by DK3WN's new program after it has been downloaded from the satellite as a big file (about 180k).
I hope that helps clear things up :)
73,
Mark N8MH
__________________
Message: 7 Date: Thu, 22 Oct 2009 12:56:50 -0400 From: Luc Leblanc lucleblanc6@videotron.ca Subject:
[amsat-bb] Re: New AO-51 Whole Orbit Data decoder released by DK3WN To: amsat-bb@amsat.org Message-ID: 4AE05692.19949.5C3023B@lucleblanc6.videotron.ca Content-Type: text/plain; charset=ISO-8859-1
On 22 Oct 2009 at 11:39, Mark L. Hammond wrote:
Date sent: Thu, 22 Oct 2009 11:39:08 -0400 From: "Mark L. Hammond" marklhammond@gmail.com Subject: [amsat-bb] New AO-51 Whole Orbit Data decoder released by DK3WN To: amsat-bb@amsat.org
Thanks to our resident telemery guru Mike Rupprecht DK3WN a new AO-51 whole orbit data (WOD) telemetry decoder has been released! ?The file with decoder and coefficients file can be downloaded from here:
http://www.dk3wn.info/files/ao51wod.zip
The AO-51 telemetry archive is on the AMSAT FTP server. ?DK3WN's new decoder is for processing "raw" WOD telemetry files. ?For example, the WOD data collected for October 2009 is here:
ftp://ftp.amsat.org/pub/amsat/telemetry/ao51/2009WOD/Oct2009/raw1009/
The decoder generates a .CSV (comma separated) file that can be opened in Excel, etc. ?A nice feature is that the telemetry program acutally graphs the data, too!
THANKS, Mike DK3WN!
73,
-- Mark L. Hammond [N8MH]
Sent via AMSAT-BB@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
Hi Mark
Is it a new program or a new update for "tlmecho"? I guess it's a new one but just to be safe.
Thank's
Thank's
"-"
Luc Leblanc VE2DWE Skype VE2DWE www.qsl.net/ve2dwe DSTAR urcall VE2DWE WAC BASIC CW PHONE SATELLITE
I have both vertical and horizontal elements of my 70cm yagi coming into the shack via separate runs of LM400. They meet in a box with bits of coax for matching and phasing before going to the radio.
I would like to add a relay to make polarity changes quick and easy. Do I need to use a specific type of relay or will a garden variety DPDT from Radio Shack be sufficient?
Thanks, Elan WB2IOL
Try this
http://www.kb0nly.net/ant%20switch.html
-----Original Message----- From: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Elan Portnoy Sent: Tuesday, November 03, 2009 9:25 PM To: amsat-bb@amsat.org Subject: [amsat-bb] Please help me design a polarity switcher...
I have both vertical and horizontal elements of my 70cm yagi coming into the shack via separate runs of LM400. They meet in a box with bits of coax for matching and phasing before going to the radio.
I would like to add a relay to make polarity changes quick and easy. Do I need to use a specific type of relay or will a garden variety DPDT from Radio Shack be sufficient?
Thanks, Elan WB2IOL _______________________________________________ Sent via AMSAT-BB@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
For VHF/UHF you need proper good quality co-ax relays. They're not cheap and those available surplus are often 28/48/110V coils.
Elan Portnoy wrote:
I have both vertical and horizontal elements of my 70cm yagi coming into the shack via separate runs of LM400. They meet in a box with bits of coax for matching and phasing before going to the radio.
I would like to add a relay to make polarity changes quick and easy. Do I need to use a specific type of relay or will a garden variety DPDT from Radio Shack be sufficient?
Thanks, Elan WB2IOL _______________________________________________ Sent via AMSAT-BB@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
I have an:
"OSCAR Polarphaser PH2/S 2 meters antenna control system" gathering dust. Its the blue box type with SWR meter on the front and N type connectors on the back. Polarity, anti-clockwise, vertical, clockwise and horizontal, is continuous via a rotating dial on the front.
The patented design is by GZ HCG, whoever that might be.
Offers please.
Dave G1OCN. AMSAT UK 5766
Hi Dave,
I think you are referring to the late Bill Sykes G2HCG who used to run/own? J Beam Antennas in Northampton and very good they were!
73
Graham G3VZV ----- Original Message ----- From: "Dave Aitch" dave@g1ocn.com To: "'amsat-bb'" amsat-bb@amsat.org Sent: Wednesday, November 04, 2009 2:53 PM Subject: [amsat-bb] OSCAR Polarphaser anyone ?
I have an:
"OSCAR Polarphaser PH2/S 2 meters antenna control system" gathering dust. Its the blue box type with SWR meter on the front and N type connectors on the back. Polarity, anti-clockwise, vertical, clockwise and horizontal, is continuous via a rotating dial on the front.
The patented design is by GZ HCG, whoever that might be.
Offers please.
Dave G1OCN. AMSAT UK 5766
Sent via AMSAT-BB@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
Hi Dave, G1OCN
The polarphaser for 2 meters was also described many years ago in OSCAR-NEWS of AMSAT-UK but unfortunately I don't remember exacly the numbar of the above issue.
In my opinion it is not easy to use a polarphaser because it requires two coax lines coming down from the crossed yagi.
In addition using the actual LEO satellites the rate of change of polarization is very fast during one pass and while operating you have not the time and one more hand to rotate the dial on the front of polarphaser to get the strongest signal.
By the way it was very nice to use the polarphaser in 2 meters downlink with HEO satellites OSCAR-10 and OSCAR-13 because as they were stabilized the rate of change of polarization was very very slow.
I suggest you to save your polarphaser for P3-D
73" de
i8CVS Domenico
----- Original Message ----- From: "Dave Aitch" dave@g1ocn.com To: "'amsat-bb'" amsat-bb@amsat.org Sent: Wednesday, November 04, 2009 3:53 PM Subject: [amsat-bb] OSCAR Polarphaser anyone ?
I have an:
"OSCAR Polarphaser PH2/S 2 meters antenna control system" gathering dust. Its the blue box type with SWR meter on the front and N type connectors on the back. Polarity, anti-clockwise, vertical, clockwise and horizontal, is
continuous
via a rotating dial on the front.
The patented design is by GZ HCG, whoever that might be.
Offers please.
Dave G1OCN. AMSAT UK 5766
Sent via AMSAT-BB@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
----- Original Message ----- From: "Elan Portnoy" elanportnoy@yahoo.com To: amsat-bb@amsat.org Sent: Wednesday, November 04, 2009 6:24 AM Subject: [amsat-bb] Please help me design a polarity switcher...
I have both vertical and horizontal elements of my 70cm yagi coming into
the shack via separate runs of LM400. They meet in a box with bits of coax for matching and phasing before going to the radio.
I would like to add a relay to make polarity changes quick and easy. Do I
need to use a specific type of relay or will a garden variety DPDT from Radio Shack be sufficient?
Thanks, Elan WB2IOL
Hi Elan, WB2IOL
Read please the article " Switching Four Polarizations on a 70 cm Crossed Yagi "
Part-1 AMSAT-Journal March/April 2007 Part-2 AMSAT-Journal May/June 2007
In a separate email I have sent to you a pdf file for both articles.
73" de
i8CVS Domenico
Hi Elan,
The trick with doing circular polarization is the phasing of the two sets of elements. Unless your two runs between the shack and the antennas are exactly the same length, and out of the same cable (for velocity factor matching), you're never going to get the result you want.
Others have posted information about the switching part; is there any way you can put that up on the tower?
Greg KO6TH
Date: Tue, 3 Nov 2009 21:24:59 -0800 From: elanportnoy@yahoo.com To: amsat-bb@amsat.org Subject: [amsat-bb] Please help me design a polarity switcher...
I have both vertical and horizontal elements of my 70cm yagi coming into the shack via separate runs of LM400. They meet in a box with bits of coax for matching and phasing before going to the radio.
I would like to add a relay to make polarity changes quick and easy. Do I need to use a specific type of relay or will a garden variety DPDT from Radio Shack be sufficient?
Thanks, Elan WB2IOL _______________________________________________ Sent via AMSAT-BB@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
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participants (8)
-
Dave Aitch -
David Wing -
Elan Portnoy -
Graham Shirville -
Greg D. -
i8cvs -
Mark L. Hammond -
Nigel Gunn G8IFF/W8IFF