[amsat-bb] Re: U-110 Rotor Setup
Hello Joel Many TV rotators have similar construction like Alliance U110 Stolle I have adapted the Stolle for the the elevation , have also a position feedback indicator to this Stolle with suitable gears turned out of Delrin See the youtube videos http://www.youtube.com/watch?v=QokKifsSTNI http://www.youtube.com/watch?v=tWBh29MyqWU Happy homebrewing best 73 Pop VU2POP From: Joel Black w4...@charter.net To: AMSAT amsat-bb@amsat.org Sent: Tuesday, 3 July 2012 8:09 AM Subject: [amsat-bb] U-110 Rotor Setup I am looking for an old article regarding the use of two U-110 rotors for satellite operations. I have gone through all my old references and cannot find what I'm looking for. Basically, it was a setup using two U-110's (or it could have been two U-100's). The homemade controller used either toggle or rocker switches and had a digital readout of AZ/EL using DVOM's. As far as I remember, it was all manual. I remember seeing this in the back of some publication, but I cannot find it. Does anyone have any inkling of and idea what I'm talking about? 73, Joel - W4JBB ___ 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 ___ 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] Stupid. Question
Hi to the list, Please apologize if for someone i am making a stupid question. I am going to change my broken G-5400B rotator with a new G-5500 one. Before i mount it on the mast i am going to set it to the North. On the old one, on the Control Box there was 0 degreese and 360 degreese on the same point, in the middle of the analo display while on the new one i have the 0 degreese on the left side of the analig display at the beginner of the analog display while the 360 degreese is on the right side of the analog display. The stupid question is: How do i have to set the Azimuth rotator? On the 0 degreese on the left side of the analog display or on the 360 degreese on the right side of the analog display? Any help will be really appreciated. Enzo Sent from iPhone ___ 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: Stupid. Question
Preset your rotor control to North, either 0 or 360. Mount rotor on the tower, mast etc. It makes no difference where the rotor is physically pointing. Mount antenna onto rotor and position it pointing north. The only thing to worry about is the drip loop position of your feedline. It should not bind as you rotate from north to south. It's harder to describe than it is to do... -Original Message- From: Vincenzo Mone Sent: Tuesday, July 03, 2012 4:16 AM To: amsat-bb@amsat.org Subject: [amsat-bb] Stupid. Question Hi to the list, Please apologize if for someone i am making a stupid question. I am going to change my broken G-5400B rotator with a new G-5500 one. Before i mount it on the mast i am going to set it to the North. On the old one, on the Control Box there was 0 degreese and 360 degreese on the same point, in the middle of the analo display while on the new one i have the 0 degreese on the left side of the analig display at the beginner of the analog display while the 360 degreese is on the right side of the analog display. The stupid question is: How do i have to set the Azimuth rotator? On the 0 degreese on the left side of the analog display or on the 360 degreese on the right side of the analog display? Any help will be really appreciated. Enzo Sent from iPhone ___ 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: U-110 Rotor Setup
Okay, that sounds familiar, John. It had pots that may have been belt driven that increased or decreased the resistance depending on rotation. Something else I remember - the person put a plastic garbage can over it to keep out the rain. I know why he did that. I just find it amusing that I remember that detail. Let me ask one other question before I get to comments. I actually have one U-100 and one U-110. Is this going to be an issue? I'm not sure what the difference is. @AA5AM: Don't put too much into it. I thought someone might remember it off the top of their head. There are several solutions that I got that may be better than what I was looking for. @KL7XJ: I vaguely remember the SatEL being advertised in the Journal. I think it is time to renew my AMSAT membership and maybe purchase those DVD's. @VK4HHH: I have looked at K8DAV's setup quite a bit. I got myself confused thinking it only worked over a parallel port (that is an issue but can be overcome unless portable/field). However, I realized the basic stamp controller worked over a serial port (not an issue). I may go this route, but I'm still looking for options. Will this setup work using SatPC32 which was my preferred tracking software when I was satellite active? @KO6TH: I like your approach. Let me see if I got my head wrapped around your design - serial interface to the FODtrack board which then controlled your controller? That's pretty cool. @VU2POP: Very nice homebrew tower and rotor setup. Still working out my options. I just want something simple that I can take to the field using a modern laptop. Lot's of good suggestions here. Downloaded the form to renew my AMSAT membership too. 73, Joel - W4JBB On 7/3/2012 5:09 AM, John / NS1Z wrote: I think you are referring to the satellite compendium put out many years ago. Ii am sure it is out of print now. Over the years I built a couple and one even auto track (but a LOT of work) -Original Message- From: Joel Black Sent: Monday, July 02, 2012 6:09 PM To: AMSAT Subject: [amsat-bb] U-110 Rotor Setup I am looking for an old article regarding the use of two U-110 rotors for satellite operations. I have gone through all my old references and cannot find what I'm looking for. Basically, it was a setup using two U-110's (or it could have been two U-100's). The homemade controller used either toggle or rocker switches and had a digital readout of AZ/EL using DVOM's. As far as I remember, it was all manual. I remember seeing this in the back of some publication, but I cannot find it. Does anyone have any inkling of and idea what I'm talking about? 73, Joel - W4JBB ___ 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] 2M1EUB/P QRV 1800GMT
WILL BE QRV NXT PASS MODE B.? AO7 1800GMT FROM IO88 SQ 2M1EUB/P ___ 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] Near-Space Balloon Student is Young Ham of the Year
17 Year old Erin King AK4JG has been named as Amateur Radio Newsline™ Young Ham of the Year. See http://www.uk.amsat.org/8745 73 Trevor M5AKA ___ 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: Rokot launch today with RS series sat?
It looks like it's been bumped to 03:12 UTC on July 13th. 73, Drew -Original Message- From: Andrew Glasbrenner glasbren...@mindspring.com Sent: Jul 2, 2012 4:32 PM To: amsat-bb amsat-bb@amsat.org Subject: [amsat-bb] Rokot launch today with RS series sat? Anyone heard anything about this launch? It is listed for today, and with the Yubleiny-2/MiR satellite onboard. 73, Drew KO4MA ___ 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] 13 colonies states on sat
Have anyone worked all the 13 colonies on Satellite yet? 73 Jeff kb2m ___ 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: CO6CBF/p EL93
Hello all, The trip up to EL93 was uneventful! 18 stations were worked on the AO-27 1828z pass and 5 more were worked on the low elevation western pass at 2009z. All contacts will be uploaded to LOTW (using CO6CBF). Anyone who needs a QSL card, please request it to George, WA5KBH. Thanks to everyone who worked me and then stood by when others were calling me!!! 73! Hector, CO6CBF Este mensaje ha sido enviado mediante el servicio de correo electronico que ofrece la Federacion de Radioaficionados de Cuba a sus miembros para respaldar el cumplimiento de los objetivos de la organizacion y su politica informativa. La persona que envia este correo asume el compromiso de usar el servicio a tales fines y cumplir con las regulaciones establecidas. ___ 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] QRV 4July
Apologies to all for not having K2J up on the sats. Multiple problems now, hopefully, resolved. Look for me starting 4July on AO-27 / SO-50 / AO-7 and VO-52. 73 Marc K2J North Carolina FM05 (W4MPS) ___ 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] EL39/EM30
It was back on 7/30/01 that I made a trip over to the Beaumont and found a cemetery that just happened to have a road that split EL39/EM30. I am thinking of heading over there again. Is there anyone that needs the two grids before I decide when to make the trip? I will have to use my HT and Arrow. That means FM sats. 73...bruce -- Bruce Paige, KK5DO AMSAT Director Contests and Awards ARRL Awards Manager (WAS, 5BWAS, VUCC), VE Houston AMSAT Net - Wed 0100z on Echolink - Conference *AMSAT* Also live streaming MP3 at http://www.amsatnet.com Podcast at http://www.amsatnet.com/podcast.xml or iTunes Latest satellite news on the ARRL Audio News http://www.arrl.org AMSAT on Twitter http://www.twitter.com/amsat ___ 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: U-110 Rotor Setup
Joel Black wrote: @KO6TH: I like your approach. Let me see if I got my head wrapped around your design - serial interface to the FODtrack board which then controlled your controller? That's pretty cool. Hi Joel, Well, sort of. FODTrack has two different Az/EL rotor interfaces which you can choose from. One uses a parallel port, and talks to a bit of custom analog hardware to directly sense the rotor position and turn on/off the motors. The other uses the serial port, and was intended to be used with the Yaesu controller of the day. What I did was to build my own controller that emulated enough of the Yaesu serial protocol for the FODTrack software to talk to it via the serial port. So, I wasn't using the analog FODTrack controller board hardware at all. A fundamental decision that needs to be made early on is what type of feedback your rotors give. There are two kinds - analog (potentiometer), and digital (index switch). The analog type can be controlled much more precisely, but the interface is more complicated. The digital types (which are what I have), have a resolution of around 5-10 degrees. Fortunately, 10 degrees is plenty accurate for most uses, so I went with what I had. Others have added Pots to their digital rotors, and I suppose one could add an index switch to an otherwise analog rotor too. Just decide which way you want to go up front, then work out the rest from there. By the way, I've long ago retired the FODTrack software, and now use Predict on my Linux box. I had to tweak the code a little (yea Open Source!), to output the same Yaesu commands as what FODTrack spit out. Alternatively I could have modified the controller. Either way, it's still working great. Good luck, Greg KO6TH ___ 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
