Ok, in a little panic here... Building a helix to get a bit more gain on the AO-51 mode L uplink, and I just realized that I don't know if it should be Left or Right-hand polarized. Which way should it go?
Not sure which way will really matter, since the AO-51 L/S antenna is not circularly polarized. It's explained in Gould Smith's AO-51 book, and also in the following PDF:
http://www.amsat.org/amsat-new/echo/OSCAR-E_Status_Report_5.pdf
Page 7 in the PDF has a photo of the antenna and a brief description of it.
73!
Patrick WD9EWK/VA7EWK http://www.wd9ewk.net/
Hi folks,
Just a quick note to the group that, now that AO-51 is no longer in mode LU, I've finished the L-band Helix antenna. Photos are at the bottom of the page at: http://home.wavecable.com/~ko6th There's a weak carrier off to the West of here, and it seems a bit stronger than with the makeshift Quagi I had before. So, I'll call it a success. Thanks to all for your help,
Greg KO6TH p.s. if for some odd reason you've bookmarked my projects page, note that we've changed service providers, and have a new URL.
----Original Message Follows---- From: "Patrick STODDARD (WD9EWK/VA7EWK)" amsat-bb@wd9ewk.net Reply-To: amsat-bb@wd9ewk.net To: AMSAT-BB amsat-bb@amsat.org Subject: [amsat-bb] Re: AO-51 Mode L uplink LHCP or RHCP? Date: Sat, 16 Jun 2007 19:15:45 -0700
Ok, in a little panic here... Building a helix to get a bit more gain on the AO-51 mode L uplink, and I just realized that I don't know if it
should
be Left or Right-hand polarized. Which way should it go?
Not sure which way will really matter, since the AO-51 L/S antenna is not circularly polarized. It's explained in Gould Smith's AO-51 book, and also in the following PDF:
http://www.amsat.org/amsat-new/echo/OSCAR-E_Status_Report_5.pdf
Page 7 in the PDF has a photo of the antenna and a brief description of it.
73!
Patrick WD9EWK/VA7EWK http://www.wd9ewk.net/ _______________________________________________ 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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On 24 Jun 2007 at 23:02, Greg D. wrote:
Hi folks,
Just a quick note to the group that, now that AO-51 is no longer in mode LU, I've finished the L-band Helix antenna. Photos are at the bottom of the page at: http://home.wavecable.com/~ko6th There's a weak carrier off to the West of here, and it seems a bit stronger than with the makeshift Quagi I had before. So, I'll call it a success. Thanks to all for your help,
Greg KO6TH p.s. if for some odd reason you've bookmarked my projects page, note that we've changed service providers, and have a new URL.
Hi
You can ask the control team to open this mode again if they received enough request they can make it available again.
Amsat-NA has established an Operations Group and email address for AO-51 satellite users to submit requests and ideas for the Experimenters Wednesday sessions. We will also take suggestions for the normal weeklong operational periods as well. Every member of the Operations Group will receive emails from this address. This is your chance, the amateur satellite user, to request from the AO-51 Operations Group the modes you are interested in seeing operated on the satellite during the weekly Wednesday sessions. Do not expect a reply to every email, as we will not have the time to respond to each one, but your input will be noted. The email address to send your requests or ideas to the Operations Group is:
mailto:ao51-modes@amsat.org?subject=AO51%20web%20page%20request
"-" "It is not the class of license the amateur holds, but the class of the amateur that holds the license."
Luc Leblanc VE2DWE Skype VE2DWE www.qsl.net/ve2dwe WAC BASIC CW PHONE SATELLITE
participants (3)
-
Greg D. -
Luc Leblanc -
Patrick STODDARD (WD9EWK/VA7EWK)