[amsat-bb] Re: m9 class solar flare
Guys, I don't think the particles arrive until Tue morning, right? Mark, WD4ELG ___ 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: spaceweather.com
Uhm...what happens if we DO cross the streams? -Mark, WD4ELG ___ 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: ARISSat : only a few more days !
Periodic reboosts are thus necessary every few months, usually undertaken by a Progress cargo ship docked to the Russian segment, or an Orbiter when docked to Destiny. http://suzymchale.com/ruspace/issorbit.html -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Wayne Estes Sent: Wednesday, December 28, 2011 4:16 PM To: amsat-bb@amsat.org Subject: [amsat-bb] Re: ARISSat : only a few more days ! Out of curiosity, what method is used to keep the International Space Station from burning up? I know that periodic boosts are done to raise the orbit. Is that done with rocket engines built into the space station? If so, it seems that storage and eventual reloading of the fuel would be difficult and high-risk. Or is the ISS boosted using the engines of a docked vehicle? That seems like it would have its own set of complications. Wayne Estes W9AE Oakland, Oregon, USA, CN83ik ___ 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] Re: Is it possible to work LEO sats (FM or SSB) with antennas in attic?
This is the only way I work satellites, David. I have 2 Elk antennas in the attic, one over the other attached to a shovel, aimed at 30 degrees elevation (fixed) and I can only change the azimuth. I do have the ARR pre-amps at the antennas to help with the received signal, so that does help. Mark Lunday WD4ELG ___ Sent via amsat...@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] Wow, what a civil and courteous crowd on AO-27
I worked four stations. Two of those called me after my first two QSO's. A bunch of other QSO's happened, all with civility and good amateur practice. There was almost no cross-talk QRM among stations. EXTREMELY courteous. 4B2NV, KB0RZD, K0BAM, KD8KSN, WC7V heard or worked. This is my first FM satellite pass in more than a year, I gave up after the absurdity on AO-51 in April of 2009. Nicely done, Gentlemen. Obviously rule #1 was in effect today: don't be a bird hog 73 Mark Lunday, WD4ELG Greensboro, NC FM06be wd4...@arrl.net http://wd4elg.blogspot.com http://wd4elg.net ___ Sent via amsat...@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: question
Adrian, I had a thread from December 2008 on this board that said the following: VO-52 is LSB on the uhf uplink and USB on the vhf downlink FO-29 is LSB on the vhf uplink and USB on the UHF downlink. AO-7 is LSB on the uhf uplink and USB on the vhf downlink. Mode B AO-7 is USB on the vhf uplink and USB on the 10m downlink Mode A Can you please comment? -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Adrian Engele Sent: Tuesday, June 29, 2010 8:28 PM To: Dads; amsat-bb@amsat.org Subject: [amsat-bb] Re: question Jerry, Linear satellites today use LSB for the Uplink and USB for the downlink by general agreement. Also by agreement: CW is on the lower 1/3 of the downlink bandpass. Mixed Modes are in the center 1/3 of the downlink bandpass. SSB is in the top 1/3 of the downlink bandpass. 73, Adrian AA5UK From: Dads w0...@msn.com To: amsat-bb@amsat.org Sent: Tue, June 29, 2010 6:39:01 PM Subject: [amsat-bb] question Hi : I sent a couple friends that are interested to the AMSAT website. I told them to look at all the satellites. They found the site had all satellites on it. When they brought up the sats they didn,t put on the sidebands on the linear birds, the up and downlinks . I mean the upper and lower sidebands for these birds. So I sent them to the UK site and they were there. They didn,t have Oscar 68 on there though. Jerry w0sat ___ Sent via amsat...@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...@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...@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: question
Thanks, Adrian. I wanted to make sure that my notes were correct, as I am not very experienced and have made mistakes in using the wrong mode. Fortunately, a polite ham would gently correct me on the air, without making me feel too dumb J And I appreciate your kind response as well, Adrian. Just one more reason why I enjoy this hobby and AMSAT. Thanks, 73 From: Adrian Engele [mailto:aa...@yahoo.com] Sent: Wednesday, June 30, 2010 9:00 AM To: Mark Lunday; Dads; amsat-bb@amsat.org Subject: Re: [amsat-bb] Re: question Mark, Both our responses are correct. I decided to leave AO-7 Mode A off from my initial response to Jerry as few people use that mode these days. This is a non inverting transponder, therefore USB-Up and USB-Down. I was trying to address Jerry's request for helping our newcomers. Their concentration would most likely be on FO-29, HO-68, AO7 (mode B) and VO52. All four of these satellites are LSB Up and USB down as you indicated below. A great web site where all this information is nicely detailed is at: http://www.dk3wn.info/satellites.shtml See each satellite page. 73, Adrian AA5UK _ From: Mark Lunday mlun...@nc.rr.com To: Adrian Engele aa...@yahoo.com; Dads w0...@msn.com; amsat-bb@amsat.org Sent: Wed, June 30, 2010 7:45:26 AM Subject: RE: [amsat-bb] Re: question Adrian, I had a thread from December 2008 on this board that said the following: VO-52 is LSB on the uhf uplink and USB on the vhf downlink FO-29 is LSB on the vhf uplink and USB on the UHF downlink. AO-7 is LSB on the uhf uplink and USB on the vhf downlink. Mode B AO-7 is USB on the vhf uplink and USB on the 10m downlink Mode A Can you please comment? -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Adrian Engele Sent: Tuesday, June 29, 2010 8:28 PM To: Dads; amsat-bb@amsat.org Subject: [amsat-bb] Re: question Jerry, Linear satellites today use LSB for the Uplink and USB for the downlink by general agreement. Also by agreement: CW is on the lower 1/3 of the downlink bandpass. Mixed Modes are in the center 1/3 of the downlink bandpass. SSB is in the top 1/3 of the downlink bandpass. 73, Adrian AA5UK From: Dads w0...@msn.com To: amsat-bb@amsat.org Sent: Tue, June 29, 2010 6:39:01 PM Subject: [amsat-bb] question Hi : I sent a couple friends that are interested to the AMSAT website. I told them to look at all the satellites. They found the site had all satellites on it. When they brought up the sats they didn,t put on the sidebands on the linear birds, the up and downlinks . I mean the upper and lower sidebands for these birds. So I sent them to the UK site and they were there. They didn,t have Oscar 68 on there though. Jerry w0sat ___ Sent via amsat...@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...@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...@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: FT-817 Hmmm
Once you get the hang of finding your own signal, it's a delight to use the FT 817. I have two of them and I prefer the linear transponder birds over the FM repeaters. -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Don Sent: Thursday, June 24, 2010 7:52 PM To: amsat-bb@amsat.org Subject: [amsat-bb] FT-817 Hmmm The FT-817 appears to be a popular rig among satellite users of the fm birds. As they a all mode rigs I wonder how well they would work for a linear transponder set up? Rigs for that use are a little hard to come by. I am hoping to move in that direction some time. However it kind of needs to be portable as I am surrounded by trees at my house. Must say now that I got the hang of working LEO's I am having fun no. 73 WB8ZOM Don ___ Sent via amsat...@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...@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: SO-67 Back Next week?
I was listening for SO-67 this evening (0230 UTC pass) and did not hear anything. Does the bird require illumination? Has it returned to normal yet? -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of John Meeks Sent: Friday, May 07, 2010 1:57 PM To: amsat-bb@amsat.org Subject: [amsat-bb] SO-67 Back Next week? From Jan-Albert Koekemoer via sumbandila.googlegroups.com : We've indeed have a long radio silence now. Some good news is that we're reprogramming the command transceiver on the satellite used by the SA-AMSAT payload (CTR-VU2) tonight. This will hopefully sidestep the issue we've had with the cut-off at the PTT tail. The idea is to keep the PTT active for the 15 minute duration that the SA-AMSAT payload will be active at a time, i.e. uncouple the PTT functionality from the rest of the SA-AMSAT payload functions. We will then make sure it works as expected (hopefully first half of next week) and if all goes well, aim to have the payload fully operational and in service again by the end of the week. From SARLNEWS: SUMBANDILASAT SOON BACK IN AMATEUR RADIO MODE SA AMSAT announced that SumbandilaSat will soon be back in the Amateur Radio Mode. Currently Sunspace will re-program CR2 with a fix for the SA AMSAT PTT problem . This is expected to be completed by mid May. Programming of the Amateur Radio Payload will in future be carried out by the CSIR Satellite Application Centre at Hartebeeshoek. SA AMSAT will work with SAC to coordinate operational requests. More details on how to request operation will be announced in the next two weeks and published on www.amsatsa.org.za http://www.amsatsa.org.za. We will not be using googlegroups. ___ Sent via amsat...@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...@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: HO-68 Schedule - 06-13 June 2010
07 June 2010 03:05...Turn On--FM South America,NA,North Asia 03:50...Turn Off I just tried FM and SSB, heard no one and did not hear myself. Did anyone else successfully work HO-68 on this pass? Mark Lunday WD4ELG ___ Sent via amsat...@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: Arrow and EME?
I have been doing some reading on this also. Although I have not yet made any EME contacts, I have been uncovered the following: 1. Moonrise/moonset will enhance signals because of ground reflections, something like 6 dB. Many folks intentionally use moonrise and moonset attempts for this reason. 2. Mast mounted pre-amp is essential 3. Higher frequencies need more gain (so I have been told). But the 440 MHz part of the arrow antenna should have a LOT more gain than the 2 meter part. 4. Low loss coax is very important, esp at VHF. Keep the runs short and use something equiv to LMR 400 (50 foot of the good stuff is probably under $100, and worth it. 5. Definitely try to set up a sked with W5UN. If you can hear him, then you are halfway there! 6. Monitor websites like http://www.chris.org/cgi-bin/jt65emeA 7. 2010 appears to be a promising year for EME, here is a good calendar: http://www.vhfdx.net/w5luu.html Mark Lunday WD4ELG Greensboro, NC - FM06be wd4...@arrl.net http://wd4elg.net http://wd4elg.blogspot.com -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of MM Sent: Thursday, April 01, 2010 8:37 AM To: AMSAT-BB@amsat.org Subject: [amsat-bb] Arrow and EME? Arrow Antenna and EME: It is possible to work Earth Moon Earth with an Arrow Antenna. Of course, it is. You just need to make a schedule with someone on the other side of the link with enough Antenna Gain. You also need to be running the new digital text messaging mode called JT65B Link for JT65 http://www.physics.princeton.edu/pulsar/K1JT/ Definitions: In this document I will refer to all antenna gain values based on the number of elements. Example: A Single half-wave Dipole = 0 dBd Elements 2 = 3 dBd Elements 4 = 6 dBd Elements 8 = 9 dBd Elements 16 = 12 dBd The Arrow antenna (Model 146/436-10) has 3 elements on the 2-meter band, so its maximum theoretical Element Gain is 4.5 dBd. With the invention of the JT65 protocols, thousands of Amateur Radio stations running a Single Yagi 2-meter antennas, now have access to the Moon and EME contacts. To make a contact on Moon bounce, the Total Antenna Gain from both stations is added up and will need to be in the approximate range of 25-30 dBd. With this gain and the average transmitter power of (100-400 watts) you will have a 10-20+ percent chance of completing a 2-way EME JT65B link, with another station. Note: There are many other factures used in EME gain calculations. For simplicity, we will just focus on the antenna Gain. The amount of Total Antenna Gain required depends on the mode you wish to use. The wider the mode, the more gain that is required. The mode JT65B is a very narrow mode and requires less gain. I am not going to go over all of the details of JT65 in this article, look it up. Gain required by mode: (All values are approximate) JT6528-30 dBd (1-Yagi + 4-Yagi) CW 30-40 dBd (4-Yagi + 4-Yagi) SSB 40-50 dBd (8-Yagi + 8-Yagi) FM 60-70 dBd (16 + 24) Guess The Mode JT65B requires approximately 30 dB of Total Antenna Gain for an EME contact. If we assume the average 12-element 2-Meter Yagi has 10.5 dBd (round to 11 for easy math) of Element Gain, then the more Yagi's you stack, the more gain you will have. In EME lingo, 1x12 means, you have One Yagi, with 12 elements, 4x12 means you have a stack of 4 yagis with 12 elements each (48 elements total) and an approximate gain of 17 dBd. 1-Yagi = 11 dBd 2-Yagi = 14 dBd 4-Yagi = 17 dBd 8-Yagi = 20 dBd 16-Yagi = 23 dBd 32-Yagi = 26 dBd 64-Yagi = 29 dBd (W5UN) A Single-Yagi station (11 dBd) calling a 4-Yagi (17 dBd) station will have approximately 28 dBd Total Antenna Gain. The 4xYagi stations are very common on JT56B EME. Let's go back to the Arrow Antenna: We need 30 dBd of total antenna gain. The Arrow antenna has 4.5 dBd. The Arrow also has a Maximum power limitation of 150 watts (10 watts if hand held). If you are running the maximum 150 watts on your Arrow antenna, you should be able to work stations with 32 to 64 Yagi's. There are not very many 64 Yagi stations out there, however Dave W5UN has been active on JT65 EME recently. If you want more of a challenge, you can try QRP at 5 watts and your Arrow antenna. Reducing you power from 150 watts to 5-10 watts, will reduce your performance by 12 db. To compensate for the reduce power, you will just need to find a station with a bigger antenna. There is another big gun on EME. Two weeks ago, Arecibo was on EME, running CW, working EME stations on the 440 band. The antenna used at Arecibo is a simple 1,000 foot dish. The actual gain for 2-meters is not known, however I will assume it is more than 64-Yagi's. http://www.naic.edu/ So here is your chance. Make a schedule with Arecibo and go for QRP, EME, with a held Arrow antenna, or if you know of any good contacts at Arecibo, send me the data and I'll try to arrange a schedule and try it from my station. Other
[amsat-bb] Re: satpc ??
Das meanst dat du bist nicht finger-gepoken an die computer, und nicht tinkeren mit die kommunikatorien. Seriously, it means invalid floating point operation. Something going on there. What is your OS? Mark Lunday WD4ELG Greensboro, NC - FM06be wd4...@arrl.net http://wd4elg.net http://wd4elg.blogspot.com -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Bob- W7LRD Sent: Sunday, December 20, 2009 1:26 AM To: amsat-bb@amsat.org Subject: [amsat-bb] satpc ?? I downloaded new keps now I get a box that says, ungultrige Gleitkommaoperation marching across the screen that won't stop unless I restart the computer. Assistance please. 73 Bob W7LRD ___ Sent via amsat...@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...@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: AR2 432 MHz preamp - not working?
Thanks, Alan. Mark Lunday WD4ELG Greensboro, NC - FM06be wd4...@arrl.net http://wd4elg.net http://wd4elg.blogspot.com -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Alan P. Biddle Sent: Saturday, December 12, 2009 5:00 PM To: 'Mark Lunday, WD4ELG'; 'amsat-bb' Subject: [amsat-bb] Re: AR2 432 MHz preamp - not working? Mark, I would first check the current draw, which should be around 170-180 ma in RX. And there is always the old trick of hooking it up backwards. Been there, done that. ;) If that is good, then look at the coax cables. Alan WA4SCA -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Mark Lunday, WD4ELG Sent: 12 December, 2009 13:50 To: 'amsat-bb' Subject: [amsat-bb] AR2 432 MHz preamp - not working? Was working before the QTH relo. Reinstalled in the attic. The 144 preamp, same power supply, working just fine. Any ideas on how to check w/o taking it apart? The connectors have not been modified. As always, I am certain it is something simple. Mark Lunday WD4ELG Greensboro, NC - FM06be mailto:wd4...@arrl.net wd4...@arrl.net http://wd4elg.net http://wd4elg.net http://wd4elg.net http://wd4elg.blogspot.com ___ Sent via amsat...@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...@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...@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: The Official Site of XW-1 Amateur Satellite
Looks like something with IE7, having the same problem here Mark Lunday WD4ELG Greensboro, NC - FM06be wd4...@arrl.net http://wd4elg.net http://wd4elg.blogspot.com -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Michael Baker Sent: Saturday, December 12, 2009 6:00 PM To: 'Michael Chen'; 'amsat-bb' Cc: alank...@vip.sina.com Subject: [amsat-bb] Re: The Official Site of XW-1 Amateur Satellite OK, Huston, we have a problem. When IE loads the page it goes nuts and just keeps trying to load while the progress toolbar flashes. Something is amiss with the web page. Michael Baker K7DD k...@cox.net -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Michael Chen Sent: Saturday, December 12, 2009 10:30 AM To: amsat-bb Cc: alank...@vip.sina.com Subject: [amsat-bb] The Official Site of XW-1 Amateur Satellite All, Please visit the http://www.xw1.org and keep updated with what's new about XW-1. Michael Chen, BD5RV/4 Email: michael.bd...@gmail.com MSN: bd...@jsdxc.org Skype: michael-bd5rv ___ Sent via amsat...@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...@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...@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] Can someone please remind me which birds need to be illuminated...
with sunlight in order to function? AO-7 - yes AO-16 - ??? AO-27 - no AO-51- no FO-29 ??? VO-52 - no SO-50 - no SO-67 - ??? Mark Lunday WD4ELG Greensboro, NC - FM06be mailto:wd4...@arrl.net wd4...@arrl.net http://wd4elg.net http://wd4elg.net http://wd4elg.net http://wd4elg.blogspot.com ___ Sent via amsat...@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: Can someone please remind me which birds need to be illuminated...
Thanks, I have not been active for several months...was wondering why I was not hearing FO29 Mark Lunday WD4ELG Greensboro, NC - FM06be wd4...@arrl.net http://wd4elg.net http://wd4elg.blogspot.com -Original Message- From: Andrew Glasbrenner [mailto:glasbren...@mindspring.com] Sent: Thursday, December 03, 2009 10:30 PM To: Mark Lunday Cc: 'amsat-bb' Subject: Re: [amsat-bb] Can someone please remind me which birds need to be illuminated... Mark Lunday wrote: with sunlight in order to function? AO-7 - yes AO-16 - ??? No longer usable under most circumstances, requires constant attention to stay on. AO-27 - no AO-51- no FO-29 ??? Battery issues, requires full or near full illumination for the entire orbit. Not currently operational over the US. May return. VO-52 - no SO-50 - no SO-67 - ??? Currently only scheduled for passes while illuminated. 73, Drew KO4MA ___ Sent via amsat...@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: 70cm preamp
Michael - check out eham.net for reviews on latest models Mark Lunday WD4ELG Greensboro, NC - FM06be wd4...@arrl.net http://wd4elg.net http://wd4elg.blogspot.com -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Michael Chen Sent: Thursday, November 26, 2009 2:04 PM To: amsat-bb Subject: [amsat-bb] 70cm preamp HI, All, I am looking for a good 70cm preamp for satellite operation. Kind of urgent. Recommendations and sale are welcome. Michael Chen, BD5RV/4 Email: michael.bd...@gmail.com MSN: bd...@jsdxc.org Skype: michael-bd5rv ___ Sent via amsat...@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...@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: 70cm preamp
Personal experience with ARR, they are superb. Tried MFJ, not too happy with the result there Mark Lunday WD4ELG Greensboro, NC - FM06be wd4...@arrl.net http://wd4elg.net http://wd4elg.blogspot.com -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Gary Joe Mayfield Sent: Thursday, November 26, 2009 2:46 PM To: 'Michael Chen'; 'amsat-bb' Subject: [amsat-bb] Re: 70cm preamp Hard to beat ARR http://www.advancedreceiver.com/page10.html 73, Joe kk0sd -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Michael Chen Sent: Thursday, November 26, 2009 1:04 PM To: amsat-bb Subject: [amsat-bb] 70cm preamp HI, All, I am looking for a good 70cm preamp for satellite operation. Kind of urgent. Recommendations and sale are welcome. Michael Chen, BD5RV/4 Email: michael.bd...@gmail.com MSN: bd...@jsdxc.org Skype: michael-bd5rv ___ Sent via amsat...@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...@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...@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: Volunteered
Chiming in, after watching this go back and forth and feeling frustrated here. The issue here is about holding volunteers accountable as if they were paid staff. It's about expectations as well. Noone is questioning whether the volunteers worked their butts off. What we're talking about is that the AMSAT community (at least some, anyway) have an expectation of performance equivalent to what would be provided by full-time paid staff. Well, as long as it's volunteers only, that expectation is not reasonable (IMHO). None of the volunteers can provide that kind of support day-in and day-out. Holding volunteers to that standard is, in my opinion, a mistake. Having said that, what AMSAT volunteers have accomplished is SO FAR ABOVE what a normal volunteer organization achieves, that it BOGGLES THE MIND. I have been an AMSAT member for 18 months and active on satellites for about as long. To see what has been achieved by volunteers, spanning across geography, is AMAZING. The ability to ask ANY question about satellites in general and AMSAT in particular on this BB, and get an accurate response in a timely fashion is impressive. The collective intellectual capital and horsepower is deep and very valuable. And THAT'S the issue! We're so accustomed to outstanding performance on so many things with AMSAT that we start *expecting* above and beyond in all cases. That's not always realistic. I had a few 1:1 threads with some folks about this over the past few days, and I think we could address some of the problems if we had a paid position or two. I understand that this is being presented to the ARRL in the near future (additional funding support) Another side note: it sounds like more communication/interaction would help clarify some of these questions and concerns. Regular status reporting on progress for specific projects would help the community understand: (1) the progress (2) the risks (3) the level of effort provided by the volunteers (4) opportunities for additional input for addressing problems (leveraging some of that powerful intellectual capital and horsepower in our community). Meanwhile, as a project manager w/ PMP cert, Electrical Engineer, and a 35 year ham with military background, I am raising my hand as a volunteer for helping with the planning of future AMSAT projects Mark Lunday WD4ELG Hillsborough, NC - FM06kb wd4...@arrl.net http://wd4elg.net http://wd4elg.blogspot.com ___ Sent via amsat...@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: rotator questions
My 2 cents. Use a handheld GPS to align, or refer to a map. Reason: the Arrow is not a small beamwidth antenna...don't put too much accuracy into alignment. Like tracking pennies on a million dollar contract. Case in point: I took a TV rotor into the unfinished attic of my house, taped it to a cross beam on the floor with duct tape, inserted a sawed off handle from a standard shovel, and taped the Arrow at 30 degrees elevation to the handle. Aligned the Arrow to North by going outside and referencing the North Star after sunset against the alignment of my roof longitudinal. Works like a charm. Mark Lunday WD4ELG Hillsborough, NC - FM06kb wd4...@arrl.net http://wd4elg.net http://wd4elg.blogspot.com -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Joseph Armbruster Sent: Wednesday, August 12, 2009 11:29 AM To: amsat-bb@amsat.org Subject: [amsat-bb] rotator questions Hey everyone at the amtat-bb! I spent a good portion of the day sick in bed yesterday and only naturally got to thinking about quite a few things. I figured i'd pop on here and start asking questions. Here's some background information on my sat experience; my rig consists of a TH-F6A (handheld, not full-duplex) and an arrow antenna. I have been successfull at manually trakcing the ISS and AO-51, but I have been unsuccessful at making a contact. I went out to field day (in Oviedo Florida) and was able to check out the rig the LMARS club uses. This got me wondering about sat tracking software, the internals and what definition of North that is used. I'm familiar with the IGRF (from my day job as a GIS guy) and was wondering if any of these apps use the IGRF for calculating magnetic declination: http://www.ngdc.noaa.gov/IAGA/vmod/igrf.html I've thought about creating my own rotator and started wondering about the configuration used. When you buy a rotator and put it out in the yard, i'm guessing you have to orient the base 'correctly'. How is the base of a rotator usually aligned? Do you get a compass out and use local magnetic north (without compensating for the declination from the IGRF). I'm still in learning mode and very new to the world of sat, so if these are really dumb questions, my apologies! I am open to any reading materials you can suggest on the matter. Joseph Armrbuster, KJ4JIO ___ Sent via amsat...@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...@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] Best source for LMR-400 coax assemblies, pre-config with connectors?
Looking for recommendations.don't want to go the eBay route. Thanks in advance. Mark Lunday WD4ELG Hillsborough, NC - FM06kb mailto:wd4...@arrl.net wd4...@arrl.net http://wd4elg.net http://wd4elg.net http://wd4elg.net http://wd4elg.blogspot.com ___ Sent via amsat...@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] An amazing AO-7 QSO last week, Brazil to Belgium
Brazil to Belgium. Hey Tim, N3TL, you have been doing some of this type of planning with great success. What is the longest QSO you have achieved? What tools are you using for planning on the low passes? Your efforts are fascinating and we would like to know more. http://www.southgatearc.org/news/june2009/ao7_brazil_belgium_contact.htm Mark Lunday WD4ELG mailto:wd4...@arrl.net wd4...@arrl.net http://wd4elg.net http://wd4elg.net ___ Sent via amsat...@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: Elk Antenna ?
Regarding the 30 degree fixed elevation...I can tell you this will work just fine from my experience. The beanwidth is not like a 10 element yagi with sharp drop offs that require precise aiming. You should be good to go. Mark Lunday WD4ELG wd4...@arrl.net http://wd4elg.net -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of ha...@gunship.org Sent: Wednesday, June 03, 2009 6:54 PM To: amsat-bb@amsat.org Subject: [amsat-bb] Elk Antenna ? Guys, I want to mount the Elk dual band 144/440 antenna up on my 85' tower. Can I get away with a fixed elevation of about 30 degrees and horizontal polarization? I recognize that this is a compromise, but I'd like to avoid the additional complexity of dealing with an azimuth rotor. Any thoughts appreciated. 73 de harry, W6DXO ___ Sent via amsat...@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...@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
