2018 ARRL/TAPR DCC Call for Technical Papers & Presentations
2018 ARRL/TAPR DCC (Digital Communications Conference) http://www.tapr.org/dcc%C2%A0 September 14-16 Albuquerque, New Mexico
Call for Technical Papers & Presentations at DCC
The ARRL and TAPR DCC is an international forum for radio amateurs to meet, publish their work, and present new ideas and techniques. Presenters and attendees will have the opportunity to exchange ideas and learn about recent hardware and software advances, theories, experimental results, and practical applications.
All digital topics are covered at the DCC including Digital Voice, Data & Video, SDR, DSP, Precise Timing, Spread Spectrum, Networking Tecnologies Mesh Networking.
Technical papers are being solicited for presentation at the ARRL and TAPR Digital Communications Conference (DCC) and printed in the annual Conference Proceedings published by the ARRL.
Presentation at the conference is not required for publication although authors who attend receive priority for a scheduling a presentation during the technical forums.
If you would like to present a technical topic at the DCC and not submit a technical paper email the topic of your presentation to the TAPR Office at: [email protected]
Submission of technical papers for publication should be submitted ASAP to Maty Weinberg, ARRL 225 Main Street Newington, CT 06111 or via the Internet to [email protected]
More details about technical papers and guidelines for paper submissions are available at: http://www.tapr.org/dcc#dcccallforpapers
2018 ARRL/TAPR DCC
Digital Communications Conference
Albuquerque,NM
www.tapr.org/dcc
September 14 - 16,2018
Sheraton AlbuquerqueAirport Hotel Registration
https://www.starwoodmeeting.com/events/start.action?id=1803192256&key=19...
DCC On-lineRegistration
Early Bird Discount Ends on August 31st
https://www.tapr.org/dccregistration.php
Regular Registration Prices Start on September 1st
Conference Schedule
Technical & Introductory Forum Tracks
https://www.tapr.org/pdf/DCC_2018_Schedule_Preliminary%202018-08-29.pdf
Saturday Night Banquet
Towards A 21st Century Understanding of Earth's Upper Atmosphere:The Value of Radio Based Amateur-Scientist Partnerships
by Dr. Philip J. Erickson, W1PJE, Assistant director & head ofMIT's Atmospheric and Geospace Sciences group at Haystack Observatory. Sincethe late 1950s, MIT Haystack in Westford, MA,
https://www.tapr.org/dcc#banquet
Sunday Morning Seminar
The Citizen Weather Station Project
by Nathaniel A. Frissell, Ph.D., Assistant Research Professor, Centerfor Solar-Terrestrial Research, New Jersey Institute of Technology, W2NAF
I am using SATPC32 V12.8c with a Yaesu G5500 rotator and a GS-232B controller. In rotor setup the Max elevation is set to 180 degrees. The rotator has not been calibrated in some time, but it seems to be pointing in the correct direction and has been working properly.
But on an overhead pass (>65 degrees) when I turned on the rotor control in SATPC32 the antenna went to the horizon at the proper azimuth but flipped so the control box showed elevation at 180 degrees (visually verified). Tracking was correct but when the antenna was back down to about 45 degrees the antenna swung around 180 degrees and "unflipped" the antenna, then tracked properly to the opposite horizon. Since then it has been working properly again, but I have not had another overhead pass.
Has anyone seen this type of behavior or can direct me to a possible remedy?
Thanks Bob - AA6TB
Robert,
Do you have flip mode enabled in SATpc32? If it is the background behind the "R" will turn yellow. If you started the pass in the middle, maybe things got a little confused.
John
On Fri, Aug 31, 2018 at 8:42 AM Robert Koepke [email protected] wrote:
I am using SATPC32 V12.8c with a Yaesu G5500 rotator and a GS-232B controller. In rotor setup the Max elevation is set to 180 degrees. The rotator has not been calibrated in some time, but it seems to be pointing in the correct direction and has been working properly.
But on an overhead pass (>65 degrees) when I turned on the rotor control in SATPC32 the antenna went to the horizon at the proper azimuth but flipped so the control box showed elevation at 180 degrees (visually verified). Tracking was correct but when the antenna was back down to about 45 degrees the antenna swung around 180 degrees and "unflipped" the antenna, then tracked properly to the opposite horizon. Since then it has been working properly again, but I have not had another overhead pass.
Has anyone seen this type of behavior or can direct me to a possible remedy?
Thanks Bob - AA6TB
Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
John:
I have maximum elevation set to 180 degrees but I did not see a separate box to enable “flip” mode in the configuration. And I do not recall the box behind the “R” turning yellow.
Thanks
Bob AA6TB
From: John Kludt [mailto:[email protected]] Sent: Friday, August 31, 2018 5:53 AM To: Robert Koepke Cc: Amsat BB Subject: Re: [amsat-bb] Yaesu G5500 Rotator Issue
Robert,
Do you have flip mode enabled in SATpc32? If it is the background behind the "R" will turn yellow. If you started the pass in the middle, maybe things got a little confused.
John
On Fri, Aug 31, 2018 at 8:42 AM Robert Koepke [email protected] wrote:
I am using SATPC32 V12.8c with a Yaesu G5500 rotator and a GS-232B controller. In rotor setup the Max elevation is set to 180 degrees. The rotator has not been calibrated in some time, but it seems to be pointing in the correct direction and has been working properly.
But on an overhead pass (>65 degrees) when I turned on the rotor control in SATPC32 the antenna went to the horizon at the proper azimuth but flipped so the control box showed elevation at 180 degrees (visually verified). Tracking was correct but when the antenna was back down to about 45 degrees the antenna swung around 180 degrees and "unflipped" the antenna, then tracked properly to the opposite horizon. Since then it has been working properly again, but I have not had another overhead pass.
Has anyone seen this type of behavior or can direct me to a possible remedy?
Thanks Bob - AA6TB
_______________________________________________ Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Hi Bob, you are running rotor control in flip mode. That mode is switched on by choosing 180 degs for max. elevation. Azimut is then limited to 360 degs (you can not combine flip mode and the 450-degs-option). With flip mode enabled the program should work as follows: It checks whether the az. rotor will get to it's end point (North) during the pass. Therefore it checks at the beginning of a pass (exactly: if you start tracking before the rotor has reached the end point) whether the satellite will cross the meridian of your location in the North during the pass. If so, it will steer the antenna in flip mode (az. antenna in opposite direction, el. antenna 180 - true elevation). The color of the control "R" will change to yellow). During such pass it should not switch from flip mode to normal mode. So, check whether your rotor control works in that way. 73s, Erich, DK1TB
Am 31.08.2018 um 14:41 schrieb Robert Koepke:
I am using SATPC32 V12.8c with a Yaesu G5500 rotator and a GS-232B controller. In rotor setup the Max elevation is set to 180 degrees. The rotator has not been calibrated in some time, but it seems to be pointing in the correct direction and has been working properly.
But on an overhead pass (>65 degrees) when I turned on the rotor control in SATPC32 the antenna went to the horizon at the proper azimuth but flipped so the control box showed elevation at 180 degrees (visually verified). Tracking was correct but when the antenna was back down to about 45 degrees the antenna swung around 180 degrees and "unflipped" the antenna, then tracked properly to the opposite horizon. Since then it has been working properly again, but I have not had another overhead pass.
Has anyone seen this type of behavior or can direct me to a possible remedy?
Thanks Bob - AA6TB
Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Erich: Thank you so very much for your explanation below - that really helps understand what is happening.
73 Bob - AA6TB
-----Original Message----- From: Erich Eichmann [mailto:[email protected]] Sent: Saturday, September 1, 2018 12:39 AM To: Robert Koepke; [email protected] Subject: Re: [amsat-bb] Yaesu G5500 Rotator Issue
Hi Bob, you are running rotor control in flip mode. That mode is switched on by choosing 180 degs for max. elevation. Azimut is then limited to 360 degs (you can not combine flip mode and the 450-degs-option). With flip mode enabled the program should work as follows: It checks whether the az. rotor will get to it's end point (North) during the pass. Therefore it checks at the beginning of a pass (exactly: if you start tracking before the rotor has reached the end point) whether the satellite will cross the meridian of your location in the North during the pass. If so, it will steer the antenna in flip mode (az. antenna in opposite direction, el. antenna 180 - true elevation). The color of the control "R" will change to yellow). During such pass it should not switch from flip mode to normal mode. So, check whether your rotor control works in that way. 73s, Erich, DK1TB
Am 31.08.2018 um 14:41 schrieb Robert Koepke:
I am using SATPC32 V12.8c with a Yaesu G5500 rotator and a GS-232B controller. In rotor setup the Max elevation is set to 180 degrees. The rotator has not been calibrated in some time, but it seems to be pointing in the correct direction and has been working properly.
But on an overhead pass (>65 degrees) when I turned on the rotor control in SATPC32 the antenna went to the horizon at the proper azimuth but flipped so the control box showed elevation at 180 degrees (visually verified). Tracking was correct but when the antenna was back down to about 45 degrees the antenna swung around 180 degrees and "unflipped" the antenna, then tracked properly to the opposite horizon. Since then it has been working properly again, but I have not had another overhead pass.
Has anyone seen this type of behavior or can direct me to a possible remedy?
Thanks Bob - AA6TB
Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
participants (4)
-
Erich Eichmann -
John Kludt -
Mark Thompson -
Robert Koepke