[amsat-bb] ISS CubeSats Deployed - LituanicaSAT-1 heard
http://amsat-uk.org/2014/02/28/iss-amateur-radio-cubesats-deployed/ 73 Trevor M5AKA AMSAT-UK Website http://amsat-uk.org/ Facebook https://www.facebook.com/pages/AMSAT-UK/208113275898396 Twitter https://twitter.com/AMSAT_UK ___ 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
[amsat-bb] LitSat-1 over Brazil
Copied the strong 9k6 data signal ! Please see here: http://www.qsl.net/py4zbz/litsat.htm 73 de Roland PY4ZBZ GH70un ___ 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
[amsat-bb] WRAPS Additional Information
You can download the additional information for the WRAPS system at this web dropbox location: Click here to view WRAPS CD Master https://www.dropbox.com/l/W1bqbzv8EKIpfNvLX0mJee . Please let me know if you have any problems. My e-mail is mspen...@arrl.org [not .net.if you try dot net, I don't have that address]. I haven't made a video of the rotator operation, didn't think of it, it is sort of like watching grass grow, and currently it is too darn cold to do it. 73, Mark Mark Spencer, WA8SME Education and Technology Program Consultant ARRL, the national association for Amateur RadioTM 43 Pinelock Dr. Gales Ferry, CT 06335 860-381-5335 860-460-1139 (cell) mspen...@arrl.org ___ 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
[amsat-bb] Re: WRAPS Additional Information
I knew Mark was lurking somewhere out there…thanks for chiming in! Dino KL0S On Feb282014, at 0742 AM, Mark Spencer wa8...@comcast.net wrote: You can download the additional information for the WRAPS system at this web dropbox location: Click here to view WRAPS CD Master https://www.dropbox.com/l/W1bqbzv8EKIpfNvLX0mJee . Please let me know if you have any problems. My e-mail is mspen...@arrl.org [not .net.if you try dot net, I don't have that address]. I haven't made a video of the rotator operation, didn't think of it, it is sort of like watching grass grow, and currently it is too darn cold to do it. 73, Mark Mark Spencer, WA8SME Education and Technology Program Consultant ARRL, the national association for Amateur RadioTM 43 Pinelock Dr. Gales Ferry, CT 06335 860-381-5335 860-460-1139 (cell) mspen...@arrl.org ___ 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 ___ 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
[amsat-bb] Inverted-V turnstile idea
I had an idea pop in my head for a simple turnstile antenna, and am not finding much info on what I want to do via Google searches I wanted to bounce this off the list and see what people think. My idea consists of three main points: -Antenna elements being conventional (non-folded) inverted V dipoles, tuning the length for resonance and angle to set at 50 ohms each -1/4 wave 50 ohm phasing line between the sets of dipoles -Feed via DK7ZB match using a 1/4 wave paralleled 2x75 ohm line section (37 ohms), transforming the 25 ohms back up to right around 50 ohms for final feed This approach would give the following advantages: -Lower SWR than standard 75-ohm parallel turnstiles -Dipoles could be individually tuned via direct 50 ohm feed during construction -DK7ZB match is constructed out of inexpensive 75-ohm coax -Phasing line length would only affect phase, instead of phase and impedance. My main question, though is: With dipole elements canted down roughly 35 degrees from vertical (what I'm ballparking to get them down to 50 ohms), am I going to see noticeably degraded performance, especially regarding the polarization? Thanks for any tips or discussion! --Matt KC4YLV ___ 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
[amsat-bb] Re: Inverted-V turnstile idea
Hi Matt, are you referring to a turnstile antenna like the one available from WIMO here in Germany ? Please see the following link: http://www.wimo.de/download/ta1.pdf Best regards Matthias www.dd1us.de -Ursprüngliche Nachricht- Von: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] Im Auftrag von Jonny 290 Gesendet: Freitag, 28. Februar 2014 20:50 An: amsat-bb@amsat.org Betreff: [amsat-bb] Inverted-V turnstile idea I had an idea pop in my head for a simple turnstile antenna, and am not finding much info on what I want to do via Google searches I wanted to bounce this off the list and see what people think. My idea consists of three main points: -Antenna elements being conventional (non-folded) inverted V dipoles, tuning the length for resonance and angle to set at 50 ohms each -1/4 wave 50 ohm phasing line between the sets of dipoles -Feed via DK7ZB match using a 1/4 wave paralleled 2x75 ohm line section (37 ohms), transforming the 25 ohms back up to right around 50 ohms for final feed This approach would give the following advantages: -Lower SWR than standard 75-ohm parallel turnstiles -Dipoles could be individually tuned via direct 50 ohm feed during construction -DK7ZB match is constructed out of inexpensive 75-ohm coax -Phasing line length would only affect phase, instead of phase and impedance. My main question, though is: With dipole elements canted down roughly 35 degrees from vertical (what I'm ballparking to get them down to 50 ohms), am I going to see noticeably degraded performance, especially regarding the polarization? Thanks for any tips or discussion! --Matt KC4YLV ___ 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 ___ 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
[amsat-bb] circular polarization of antennas not on same axis
I have 2 of the ELK antennas which I mount at 90 degree angle to each other and switch between as the satellite rotates. My question is: Could I feed the two ELK antennas which are 4 feet apart, on the same boom and at right angles to each other, in quadrature phase and achieve circular polarization or perhaps decent elliptical polarization? Thanks, Doug K9DLP ___ 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
[amsat-bb] Re: Inverted-V turnstile idea
Yes, that's exactly what I had in mind! So it very well may be a viable design, then. -- Matt -jonny 290 On Fri, Feb 28, 2014 at 2:51 PM, Matthias Bopp matthias.b...@gmx.de wrote: Hi Matt, are you referring to a turnstile antenna like the one available from WIMO here in Germany ? Please see the following link: http://www.wimo.de/download/ta1.pdf Best regards Matthias www.dd1us.de -Ursprüngliche Nachricht- Von: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] Im Auftrag von Jonny 290 Gesendet: Freitag, 28. Februar 2014 20:50 An: amsat-bb@amsat.org Betreff: [amsat-bb] Inverted-V turnstile idea I had an idea pop in my head for a simple turnstile antenna, and am not finding much info on what I want to do via Google searches I wanted to bounce this off the list and see what people think. My idea consists of three main points: -Antenna elements being conventional (non-folded) inverted V dipoles, tuning the length for resonance and angle to set at 50 ohms each -1/4 wave 50 ohm phasing line between the sets of dipoles -Feed via DK7ZB match using a 1/4 wave paralleled 2x75 ohm line section (37 ohms), transforming the 25 ohms back up to right around 50 ohms for final feed This approach would give the following advantages: -Lower SWR than standard 75-ohm parallel turnstiles -Dipoles could be individually tuned via direct 50 ohm feed during construction -DK7ZB match is constructed out of inexpensive 75-ohm coax -Phasing line length would only affect phase, instead of phase and impedance. My main question, though is: With dipole elements canted down roughly 35 degrees from vertical (what I'm ballparking to get them down to 50 ohms), am I going to see noticeably degraded performance, especially regarding the polarization? Thanks for any tips or discussion! --Matt KC4YLV ___ 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 ___ 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
[amsat-bb] LituanicaSAT-1 tracking.
I've been looking for information on tracking information for the LituanicaSAT-1. Do I use the ISS data for this? Todd Bloomingdal e-KC9LOX Tom a h, WI ___ 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
[amsat-bb] ITF-1 information right after deployment requested.
Dear Friends, This is JJ3GRX Toshi, project member of the satellite ITF-1 YUI launched on Feb.27 (UTC). As you may know, we have not succeeded to receive any signal from the satellite. We are gathering the information especially before 1st reach to Japan. If you watched 437.525MHz between Feb.27 19:13 - 20:15 (UTC), please give us the info. Watched the freq. but no signal is now very precious information for us. If it is the case for many stations, we must consider the power supply problem. Providing the information is greatly appreciated. Best regards, Toshihiro KAMEDA, JJ3GRX jj3...@nifty.com ___ 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
[amsat-bb] Re: LituanicaSAT-1 tracking.
Thanks for the reply all. Todd Bloomingdale Tomah, WI On Fri, Feb 28, 2014 at 6:42 PM, Todd Bloomingdale tbloomingd...@gmail.comwrote: I've been looking for information on tracking information for the LituanicaSAT-1. Do I use the ISS data for this? Todd Bloomingdal e-KC9LOX Tom a h, WI ___ 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
