[amsat-bb] SO-67 1 June possible active passes
01/07/2010 Europe 07:53:00 09:07:00 North America 15:50:00 17:25:00 Brazil 11:20:00 73 OZ1MY Ib ___ 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] SO-67 on for the first time over Europe
Hi all, Just had a pass with AOS at 0946 UTC here in Copenhagen. It works as described on the page: http://www.amsatsa.org.za/ It means that you do not need the PL-tone once the transponder is started. In fact do not set the tone ON. The transponder sounds better without the tone. As before use FMN on the uplink - and turn the AF gain down until your modulation sounds good to yourself. Use of high power also seems to distort the audio on the downlink. This is just the experience from one short pass :-) The list on the homepage above may not be up to date all the time. When we receive confirmed lists from the control station we will publish on amsat-bb. Depending upon the time of the day - may need to sleep every now and again. This week until Monday next week I have only asked for morning passes over Europe. Next week I will ask for afternoon passes as well when the satellite is in Sun. Please remember we are just passengers on Sumbandilasat. If there are other tasks they take priority. 73 OZ1MY Ib ___ 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] SO-67 possible active passes 30 June
30/06/2010 South Africa 08:29 Europe 09:46 Brazil 11:39 13:15 North America 14:35 16:10 17:45 73 OZ1MY Ib ___ 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: Technical question AO-51
Hi, The sensitivity is -117 dBm for 10 to 12 dB SINAD. 73 OZ1MY Ib - Original Message - From: "Andrew Glasbrenner" To: "Robin Theunis" Cc: Sent: Thursday, June 10, 2010 12:43 AM Subject: [amsat-bb] Re: Technical question AO-51 > Robin Theunis wrote: > > 1) In V/S mode What is the average output power? > > > About 1.5 watts. > > 2) What kind of antenna is used on 2.4GHz and 1.3Ghz? > > > A dual band antenna built by Stan Wood WA4NFY. > http://n4hy.smugmug.com/AMSAT/AO-51-ECHO/Antennas/ > > 3) What is the sensitivity of the 1.3Ghz receiver? > > > I don't have these numbers at hand, but it's not super. The L receiver > is actually the same receiver as HF, i.e. an all band, all mode type > synthesized receiver. > > 4) Some where I reeded that AO-51 has an HF receiver? If it true, for > > what is the purpose? > > > We initially wanted to try 28MHz/435MHz PSK31, but with the short > antenna, and extra losses in a last minute hardware change, this mode > does not work very well. > > 73, Drew KO4MA > AMSAT-NA VP Operations > ___ > 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] QRM from Italy on AO-27
Hi in Italy, I just listened to a pass of AO-27 with AOS at 1406 UTC here in Copenhagen. There were 2-3 Italian stations on in terestial communications. They were radio amateurs using calls - but too fast for me to make out. IW9??? and IZØ???. I am not sure but may be it is a repeater. There were a distinct 67 Hz tone on. I could make out two city names: Catania and Modena. If some satellite users know what it is please try to make them stop. Have a nice Sunday. 73 OZ1MY Ib ___ 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: New HO-68 sked
Hi all, It was in FM mode here with AOS in Copenhagen 1657 UTC. 73 OZ1MY Ib - Original Message - From: "i8cvs" To: "John Neeley" ; "amsat-bb" Sent: Sunday, May 23, 2010 6:39 PM Subject: [amsat-bb] Re: New HO-68 sked > Hi John, W6ZKH > > Usually Alan Kung was sending the new weekly sked for HO-68 on saturday. > > 73" de > > i8CVS Domenico > > - Original Message - > From: "John Neeley" > To: "amsat-bb" > Sent: Sunday, May 23, 2010 5:41 PM > Subject: [amsat-bb] New HO-68 sked > > > > Anyone know when Alan will send out the new weekly sked for HO-68, as last > weeks is now out of date. I am guessing it will be in the FM configuration, > but that is again, just a guess.. > > > > John W6ZKH > > ___ > > 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: [Fwd: Re: Re: AO-51 mode change 5/17/10 around 1120utc]
Hi group, I just listened for the pass with AOS here at 1557 UTC. Nothing on either of the transmitters. Hope you had a nice time at Dayton. 73 OZ1MY Ib - Original Message - From: "Andrew Glasbrenner" To: "Amsat-BB" Sent: Monday, May 17, 2010 4:29 PM Subject: [amsat-bb] [Fwd: Re: Re: AO-51 mode change 5/17/10 around 1120utc] > > > > John Neeley wrote: > > Nothing heard on West Coast pass a/o 1315 utc. > > > > W6ZKH > > > > > > > Thanks John, > > We are having problems getting the satellite through eclipse with the > transmitter on. Further reports are appreciated for both the 435.300 and > .150 transmitters. > > 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 > ___ 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: FO-29? Look at the report page
Hi Bob, It is always a good idea to look at the report page: http://oscar.dcarr.org It is there to help us :-) 73 OZ1MY Ib - Original Message - From: "Bob Cutter" To: "amsat-bb" Sent: Wednesday, May 05, 2010 7:52 PM Subject: [amsat-bb] FO-29? Is it operational? 73, Bob KIØG ___ 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] Report page up and running again
Hi all, The report page is up and running again. Thanks to KD5QGR, David, for the fast action. Please use it as much as possible. It gives a nice overview of which satellites are working. 73 OZ1MY Ib ___ 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: [ao51-modes] Re: Re: AO-51 power up, PL test tomorrow
Hi Drew, I listened to a pass with AOS here at 0649 UTC. AO-51 turned the TX off as it shall - but it was soon put on by someone. I did not time it. A question: If people use a 67 Hz tone before the TX turns off will that start a new 120 sec. periode ? Have a nice Sunday all. 73 OZ1MY Ib - Original Message - From: Andrew Glasbrenner To: Amsat-BB ; AO51 Modes Sent: Sunday, April 11, 2010 12:27 AM Subject: [ao51-modes] Re: [amsat-bb] Re: AO-51 power up, PL test tomorrow PL is on as of about 2215Z. Before LOS I heard it drop twice for a second or two until it heard a valid tone again. This will happen about every 120 seconds. Reports are welcome, especially from remote users/areas. 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] OX/NØRC/P active from Thule on HO-68
Hi all, He was active on HO-68 (XW-1) on the pass with AOS here in Copenhagen at 1527 UTC. The next pass looks good for Europe and NA. HO-68 is scheduled to be in FM (Voice) from 1705 to 1750 UTC. Good luck and have a nice Easter all. 73 OZ1MY Ib ___ 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: FO-29 transponder ON
Hi Mineo, It worked very well at pass with AOS here in Copenhagen 1725 UTC. Thanks to JARL 73 OZ1MY Ib - Original Message - From: "Mineo Wakita" To: Sent: Thursday, January 28, 2010 4:52 PM Subject: [amsat-bb] FO-29 transponder ON > JARL says: We turned on an analog transponder in 11:22 UTC on January 27. > We want to confirm the battery budget by the decrease of the eclipse rate. > > JE9PEL, Mineo Wakita > > > ___ > 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] OSCAR 27 is not AO-27
Hi all, This may be known to some of you - but it has given me problems sometimes. OSCAR 27 is a different satellite than AO-27. OSCAR 27 is catalog number 18361. AMRAD-OSCAR-27 (AO-27) (AKA EYESAT) is catalog number 22825. OSCAR 27 is in the Transit series of satellites (NAVSAT). Other satellites in this series carry the OSCAR name and a number. I had this problem at a summer course in satellite technology for students from many countries. I said to them that they could use the keps for AO-27 for a project. AO-27 has a nice nearly circular orbit :-) Then they used OSCAR 27 - and I did not understand the the difference in the expected results in the start. Some lists of keplerian elements use EYESAT for AO-27. If you Goggle OSCAR 27 you get a lot of hits that are really AO-27. Greetings from Copenhagen. 73 OZ1MY Ib ___ 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] HO-68 is now on the report page
Hi all, David, KD5QDR, has included HO-68 on the report page now :-) http://oscar.dcarr.org Hope you will use this page to let us have a possibility to see which satellites are active. Thanks to David. 73 OZ1MY Ib ___ 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: 435.494 MHz CW
May be this one: 09:48 UTC strong CW beacon on 435.490MHz rs38 ubs189 uab176 [DATA] rs38 ubs188 uab177 ibs17 iab110 isp0 tab156 tsep146 tuf0 tbi167 tspa134 tspb255 mcon69 sma115 smb111 mra11 mrb14 rs38 ubs189 uab177 ibs17 iab130 isp22 tab156 tsep146 audio file of a complete beacon record (4 min) here: <http://www.dk3wn.info/p/?p=10401> http://www.dk3wn.info/p/?p=10401 73, Mike DK3WN 73 OZ1MY Ib - Original Message - From: "Andrew Rich" To: Sent: Wednesday, December 30, 2009 1:17 PM Subject: [amsat-bb] 435.494 MHz CW > I was hunting for OH-68 (XW-1) > > And I came across some CW on 435.494 MHz > > I can't seem to marry it up with another bird. > > It did not have the "TTT" like XW-1 had. > > Andrew VK4TEC > ___ > 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: AO-51 mode update
Hi Drew, That is much better :-) Worked like last time this mode was on. Just had a pass with AOS at 1241 UTC here in Copenhagen. Two QSO's - SQ7DQX and UA9UIZ. Thanks. 73 OZ1MY Ib - Original Message - From: "Andrew Glasbrenner" To: "Amsat-BB" Sent: Wednesday, December 30, 2009 12:51 PM Subject: [amsat-bb] AO-51 mode update > This morning I switched the satellite back to "normal" mode for a bit > with the 145.92/435.3 repeater on, set power levels on both 435.3 and > 435.15 transmitters to 450mw and 500mw, and reenabled the SSB/FM > repeater. I believe the higher power on the SSB/FM repeater running > alone was causing some of the interference issues and odd behavior we > have been hearing and getting reports about. I did also briefly listen > to the 145.88 uplink in FM and there was non-amateur QRM there. > > Let me know if this sounds more like the way this mode sounded last time > we ran it. > > Twitter and the AMSAT AO-51 schedule page also updated. > > 73, Drew KO4MA > AMSAT VP Operations > ___ > 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: AO-51 mode change and recommendation
Hi Alex and Mateusz, As you write it behaves strange ? At the pass with AOS here in Copenhagen at 1318 UTC it seems like some stations are using very HIGH power and that may be the problem.I could hear Mateusz and UA9UIZ - but as you said the audio was very low. Another thing I experienced was a complete cut of of the downlink ?? I thought it was local QRM at first - but may be it was the satellite. Did you hear the same ?? Last time it was in this mode it worked OK. 73 OZ1MY Ib - Original Message - From: "Mateusz" To: Sent: Tuesday, December 29, 2009 1:08 PM Subject: [amsat-bb] Re: AO-51 mode change and recommendation > > Attempted to use this mode on 2 passes but was not successful. > > Several stations tried to work on the first pass over Australia > > (07:51 UTC 29 Dec) but audio was very weak and there was a lot of > > interference on the signal. > > Some stations had difficulty netting onto frequency, probably because > > they could not hear themselves clearly. > > On the second pass I could hear no other stations attempting to access > > and while the downlink signal was strong there were all manner of > > noises present and only once or twice could I actually hear my voice > > among the noises. > > I'm sure that last time AO-51 was in this mode it worked reasonably > > well. > > Will be interested to hear reports from other continents to see if the > > interference was specific to this region. > > > > 73 > > Alex / VK5ALX > > > Hallo > > I tried at today morning and at the noon. > At the morning i heard SQ1 station but I did not finish qso. > At the noon I was copied by UA9UIZ and OZ1MY but I am not sure raport from > Ib (57 I can hear on record) and locator given by UA9UIZ is not NO46 but > NV46 (distortion?). > Signal is realy week from USB/FM transponder probably due to latest magnetic > torque experiment and changed antenna orientation on norhern hemisphere. It > sounds like fraction of one watt, not like almost 2W transmitter. > > Here is a record (cut, too much noise): > > http://www.enduro.idl.pl/audio_sat/ao51_ssb_fm.mp3 and sorry for too low > quality of sound. > > Signal is low (I know, 53 is a little too optimistic) but I did it :) > > Matt SQ7DQX > > ___ > 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] XW-1 linear transponder frequencies here
Hi all, Tried it for the first time this evening. I only had to change the downlink setting +200 Hz to hit the correct frequencies. You may experience differently with other radios. I use an IC-910. ICOM seems to display frequencies differently from the professional standard so that you have to be like 600 Hz to 800 Hz off the nominal carrier frequency in USB and LSB on the display. As far as I know the carrier frequency is used for professional radios. Great satellite. May it have a long life :-) 73 OZ1MY Ib ___ 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] AO-7 in mode-B
Hi all, On the pass with AOS here in Copenhagen at 0752 UTC it was in mode-B :-) Merry Christmas and Happy New Year to everyone. 73 OZ1MY Ib ___ 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: unable to use HO-68 JO91RR
Hi all in Europe, I do not think anything was wrong with the satellite - but there may have been 100's of stations on. The first time it was on it worked very well. This time I heard at least 3 stations getting through. During the first time it worked we made many more QSO's and I have not changed my setting since then. I could not get in as well. May be those who got through can tell us what they used in terms of frequency settings, PLL tone and power (EIRP) ? Merry Christmas and A Happy New Year to all. 73 OZ1MY Ib - Original Message - From: "Mateusz" To: Sent: Monday, December 21, 2009 9:18 PM Subject: [amsat-bb] unable to use HO-68 JO91RR > I was trying, even with full power with no effect. > Signal from transponder was noisy but strong (HB9 and IK...), i thing they > had problems too. > > > Matt SQ7DQX > > ___ > 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] SO-67 passes over Europe Saturday and Sunday
Hi all in Europe, The active passes are: 19-12-09 07:56:00 EU Central/East 19-12-09 11:05:00 EU West/Atlantic 20-12-09 07:36:00 EU Central/East 20-12-09 09:10:00 EU Central/West 20-12-09 10:44:00 EU West/Atlantic Please note that it is just a plan. It may be changed if the controllers have other more urgent things to do. 73 OZ1MY Ib ___ 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] XW-1 again over Europe
Hi all, It works great. Thanks to Nigel for the new keps for Object A: XW-1 1 36121U 09072A 09349.53641119 -.0045 0-0 0+0 031 2 36121 100.5050 046.6267 0007989 035.4736 324.6735 13.1639108550 I changed the name from Object A to XW-1 :-) It works on SatPC32 and NOVA for Windows. On the pass with AOS at 16:45:50 UTC here in Copenhagen the tone did not change (to my old ears) over the whole pass. Used 435.789400 MHz as the center frequency on the IC-910 in USB. The usual ICOM offset in USB. Nice 20 minute passes and long range. Looking forward to the transponders. 73 OZ1MY Ib ___ 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] XW-1 heard over Europe again
Hi all, Can confirm Christians report. CW beacon on. Had to go down on the downlink frequency. To start with - 600 Hz when using USB. Had to follow down during the pass until TCA, then up again. Used an additional - 2.1 kHz at TCA. Keps may be a little off. Nominel published frequency 435.790 MHz. Congratulation to AMSAT-China 73 OZ1MY Ib ___ 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] Report page now includes SO-67
Hi all, KD5QGR, David, has included SO-67 on the report page: http://oscar.dcarr.org/index.php It would be nice to have reports on SO-67 and the other satellites from all over the World. Many do it already - but there are areas with few reports. The more we are the better the information :-) 73 OZ1MY Ib ___ 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] SO-67 Monday, Tuesday and Wednesday
Hi all, Wednesday it was not on (I think). The two other days it worked very well. The general picture is that at the start to the North is easy to work :-) Once it gets further South it gets more crowded - but that is only to be expected. More people can reach it. Some operators have still not found out to use less deviation. May be they do not read the -bb ? Perhaps those of you who read this could tell those that do not. Or get the information in your national magazine. 73 OZ1MY Ib ___ 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: 08/12/09 0205utc AO-51 pass
Hi John, I heard it 40 minutes later OK 73 OZ1MY Ib - Original Message - From: To: "amsat-bb" Sent: Tuesday, December 08, 2009 3:21 AM Subject: [amsat-bb] 08/12/09 0205utc AO-51 pass > Nothing heard from that West Coast Pass at this station. Anyone else that didnt hear it, or is my receiver gone belly up? > > JOhn W6ZKH > > > ___ > 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] 3 passes of SO-67 today, Saturday over Europe
Hi all, SO-67 worked very well today with large downlink signal. The first pass was to the East of me - with SP5MG and myself on. This is the first time I have actualle seen the effect of the 3 second tail. The transmitter stayed up for those 3 seconds - very easy to see on the S-meter. The two next passes was the same as before. As Danni says in his e-mail, take the "tail" into account when working SO-67 :-) Please observe "good operating practice for FM repeater satellites" For SO-67 there is one more thing. Do not use a "normal" old deviation - use FM Narrow and turn down the mike gain. And perhaps even one more thing - when you have made a QSO on this new satellite - give way to others who have not :-) Have a nice weekend all. 73 OZ1MY Ib ___ 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: Interference in Spain
Hi Lino, I know you use SO-50 as well. With the subtone system we just can not hear, what is going on. Powerfull stations without a subtone just makes the transmitter go off. Since they do not use the subtone we can not hear who they are. Thanks for the QSL cards. They arrived from the buro today. There are some on the way for you via the buro. I made them today. 73 OZ1MY Ib - Original Message - From: "Lino IK1SOW" To: Sent: Tuesday, December 01, 2009 5:12 PM Subject: [amsat-bb] Re: Interference in Spain > To perhaps resolve the problem of the Spain interference, the audio subtones could be used for the uplink? > > Lino, IK1SOW > > > > ___ > 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] Maximum distance for the LEO satellites
Hi all, Interesting to see the talk about distance records. Just for fun I tried to find the "best case" distance for the different satellites. Conditions for the calculations: Used NOVA for Windows to find the maximum height. Used Jan Kings Spreed Sheet to find Slant Range with an elevation of 0 degrees. Multiplied by 2 to get maximum distance between two stations. Sat. Max. Height Slant Range Max. Distance between stations AO-51 817 km 3300 km 6600 km SO-50 690 km 3046 km 6092 km AO-27 800 km 3293 km 6586 km AO-Ø7 1459 km 4552 km 9104 km FO-29 1322 km 4314 km 8628 km VO-52 643 km 2935 km 5870 km SO-67 506 km 2591 km 5182 km XW-1 1200 km 4092 km 8184 km Hope it is right :-) 73 OZ1MY Ib ___ 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: morning pass AO-51
Hi Domenico, Thanks for the correction. It is not so often Italian radio amateurs that are the problem. I too would like a HEO - in the meantime I will use whatever satellite we have :-) 73 OZ1MY Ib - Original Message - From: "i8cvs" To: "OZ1MY" ; "AMSAT-BB" Cc: Sent: Monday, November 30, 2009 8:04 PM Subject: Re: [amsat-bb] Re: morning pass AO-51 > Hi ib, OZ1MY > > The accent of the interfering station on AO-51 is from Sardinia Island > and the person speaking is a radioamateur discussing about a 50 ohm > impedance with another Ham. > > www.enduro.idl.pl/audio_sat/AO51_30_11_09_0754UTC.mp3 > > You cannot solve the problem existing as well in Spain shooting down > all taxi drivers that are using 2 meters for their communications. > > The only cure is to make the LEO satellite receivers less sensitive and use > more EIRP at the ground station.no HT's my friend ! > > The above problem was not existing on HEO satellites like OSCAR-10 > OSCAR-13 and AO40 because the EIRP necessary to access the transponder > was almost 20 dB greater than the power radiated by a taxi driver or by the > Sardinian station. > > The second cure don't sell a tranceiver covering the amateur band to > everybody without an amateur licence is against the commercial purposes > i.e. it is unviable. > > I know that you will complain with my statement and the Spanish autorities > but if you don't like the Spanish or Sardinia interference over AO-27, AO-52 > and SO-50 you must pull for only one HEO and not for many supersensitive > LEO's > > 73" de > > i8CVS Domenico > > - Original Message - > From: "OZ1MY" > To: > Sent: Monday, November 30, 2009 5:05 PM > Subject: [amsat-bb] Re: morning pass AO-51 > > > Hi Mateusz, > > It sounds like Spanish to me. I heard it during the pass > > also. > > In Spain some people use the 2 meter band for privat > > talk. They are not necessarily radio amateurs. > > It is an old story :-( > > > > I tried to contact the Spanish authorities - but > > they do not do anything. > > > > It is often worse on the AO-27 uplink at 145.850 MHz. > > Sometimes they block SO-50 - but you can not hear it - > > however they make it drop out. > > > > 73 OZ1MY > > Ib > > - Original Message - > > From: "Mateusz" > > To: > > Sent: Monday, November 30, 2009 9:32 AM > > Subject: [amsat-bb] morning pass AO-51 > > > > > > > Hallo > > > > > > Today morning I recorded signals from AO51 downlink with my call and a > > > station in background: > > > www.enduro.idl.pl/audio_sat/AO51_30_11_09_0754UTC.mp3 > > > Elevation was 3 deg and lower. > > > Station heard in background probably doesn't know that transmits within > > > satellite part of 2m band, maybe it is not amateur? > > > > > > Matt SQ7DQX > > > > > > ___ > > 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: morning pass AO-51
Hi Mateusz, It sounds like Spanish to me. I heard it during the pass also. In Spain some people use the 2 meter band for privat talk. They are not necessarily radio amateurs. It is an old story :-( I tried to contact the Spanish authorities - but they do not do anything. It is often worse on the AO-27 uplink at 145.850 MHz. Sometimes they block SO-50 - but you can not hear it - however they make it drop out. 73 OZ1MY Ib - Original Message - From: "Mateusz" To: Sent: Monday, November 30, 2009 9:32 AM Subject: [amsat-bb] morning pass AO-51 > Hallo > > Today morning I recorded signals from AO51 downlink with my call and a > station in background: > www.enduro.idl.pl/audio_sat/AO51_30_11_09_0754UTC.mp3 > Elevation was 3 deg and lower. > Station heard in background probably doesn't know that transmits within > satellite part of 2m band, maybe it is not amateur? > > Matt SQ7DQX ___ 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] SO-67 over Europe 0832
Hi all, Just to tell that it was on as scheduled :-) But - please turn modulation down. Use FMN and or speak soft to the microphone. You can hear it yourself. The signal is very distorted and even fluctuating in signal strength. 73 OZ1MY Ib ___ 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: new sat
Hi Jerry, Take a look at: http://www.amsat.org/amsat-new/satellites/satInfo.php?satID=116&retURL=satellites/futures.php Its name is XW-1 73 OZ1MY Ib - Original Message - From: "Dads" To: Sent: Saturday, November 28, 2009 6:25 PM Subject: [amsat-bb] new sat > > Hi : What type of satellite is the VW-1 amateur satellite that the china > launched >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
[amsat-bb] XW-1 orbit
Hi all, Just tried to find out how the orbit will look. Very unscientific I just used FENGYUN 3A and modified the Mean Motion to 13.19 orbits per day. Then the height becomes approximately 1200 km. As far as I can find out, FENGYUN 3A was sent up from the same spaceport as XW-1 will be. I used NOVA for Windows. It allows the change without complaint :-) 73 OZ1MY Ib ___ 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 28Nov2009 1340-1345z
Hi John, It was not on during the pass over Europe either. That should have been with start 1027 UTC. Hope for tomorrow. Have a nice weekend. 73 OZ1MY Ib - Original Message - From: "John Papay" To: Sent: Saturday, November 28, 2009 2:54 PM Subject: [amsat-bb] SO-67 28Nov2009 1340-1345z > SO-67 was not heard over the eastern USA as > scheduled. It could be that there was a problem > with my receiver but it was working on the earlier > AO-51 pass. Did anyone else hear SO-67 this morning? > > 73, > John K8YSE > > > ___ > 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 Western Pass 11/21 @ 1741
Hi Alan, I have the same experience with the downlink frequency. 73 OZ1MY Ib - Original Message - From: "Alan P. Biddle" To: "'amsat-bb'" Sent: Saturday, November 21, 2009 8:15 PM Subject: [amsat-bb] Re: SO-67 Western Pass 11/21 @ 1741 > In my 45 years of haming, I can recall ONE QSO, back in my days on HF AM, > with somebody using NBFM. Until last weekend, I had completely forgotten > that the FT-847 has a button for that, and of course SATPC32 supports it as > well. ;) > > One thing I find is that the discriminator consistently centers up about 2 > KHz lower than the published frequency. I find that 435.343 MHz works best. > The rig is calibrated, and the other birds are all where they claim to be. > So far, there has been too much traffic to determine whether the uplink is a > bit off. > > Alan > WA4SCA > > > -Original Message- > From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On > Behalf Of w6...@comcast.net > Sent: 21 November, 2009 12:04 > To: amsat-bb > Subject: [amsat-bb] SO-67 Western Pass 11/21 @ 1741 > > This mornings pass of SO-67 was the best one sofar, probably because it > wasnt overloaded with signals being it was partially out over the Pacific. > > VA7VW, WC7V, W7JPI, K7CWQ, WD9EWK, N7EDK and a XE2 station were on, and for > the mostpart good communications spaced out over the 12 minute pass. Once > everyone waited for that 3 second tail audio was very good, with Leo, W7JPI > having Hi-Fi studio audio from that 847 with Mic gain turned down. It is > hard to wait for the tail, as all of us are use to the other birds. I copied > the satellite down to 2 degs over the Pacific. > > Sorry no recording device of it guess we need to make a remote base for > John K8YSE out here on the Left Coast, hi... > > John W6ZKH > DM06 > > > ___ > 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] ISS nice visible pass over Europe
Hi all, ISS has some very nice visible passes over us during these days. Just looked at the pass with AOS at 1540 UTC here from Copenhagen. No clouds for a change :-) Max. elevation for this pass for me was 36 degrees. Have a nice weekend all. 73 OZ1MY Ib ___ 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] Linear transponder versus FM transponder for LEO satellites
Hi, The e-mail from I8CVS brings the issue up again. Why not just be happy to get one more transponder for us to use ? If you do not want to use a FM transponder so that be it. It is interesting to note that there are far more operators on the FM transponder satellites than on the linear satellites in Low Earth Orbit. Anyway the choice is made by the ones who make and finance the satellites and transponders. With a height of 500 km FM is probably the way to go. The dopper shift is large. It may be a bad choice for a linear transponder unless you assume that everyone are using full doppler tracking :-) Sumbandilasat it a very good satellite for operators working portable or mobile. The downlink is strong and it will be better to use it once things settle down. Every time we have a new satellite we have very many wanting to try it out. I think we should say thank you to our friends in SA for a new one. 73 OZ1MY Ib ___ 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 over Europe thanks for test
Hi Roger and the -bb, >From memory it takes up less than 12.5 kHz which is the channel spacing on 2 meters (In Region 1 at least). Frequency deviation like 2.5 kHz (old 3.5 kHz and even some have 5 kHz deviation). It is the frequency deviation that is a the issue with SO-67 (I think). If you run too high deviation on the uplink the LF to the transmitter will make it deviate too much. Even for a normal (old) setting on the receive side. The Carson rule says: Signal Bandwidth = 2 times (Deviation + modulation frequency). Did that help ? 73 OZ1MY Ib - Original Message - From: "Roger Kolakowski" To: "OZ1MY" ; "Kostas Ioannidis" ; "AMSAT-BB" Sent: Saturday, November 07, 2009 3:03 PM Subject: Re: [amsat-bb] Re: SO-67 over Europe thanks for test > How "narrow" is FMN? > > Roger > WA1KAT > > - Original Message - > From: "OZ1MY" > To: "Kostas Ioannidis" ; "AMSAT-BB" > > Sent: Saturday, November 07, 2009 6:40 AM > Subject: [amsat-bb] Re: SO-67 over Europe thanks for test > > > > Hi Kostas, > > If you do not have FMN on your radio, turn the mike gain down and/or > > do not shout :-) > > 73 OZ1MY > > Ib > > - Original Message - > > From: "Kostas Ioannidis" > > To: "OZ1MY" > > Sent: Saturday, November 07, 2009 12:20 PM > > Subject: Re: [amsat-bb] SO-67 over Europe thanks for test > > > > > > > Goodmorning, > > > As the previous operator said thank you a lot for this great sounding > > > sat! It was booming all tha pass. > > > A lot of traffic on the air! But the narrow FM is an issue for those > > > who do not use it... > > > > > > > > > > > > > > > 73 de SW1IXP > > > > > > > ___ > > 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 over Europe thanks for test
Hi Kostas, If you do not have FMN on your radio, turn the mike gain down and/or do not shout :-) 73 OZ1MY Ib - Original Message - From: "Kostas Ioannidis" To: "OZ1MY" Sent: Saturday, November 07, 2009 12:20 PM Subject: Re: [amsat-bb] SO-67 over Europe thanks for test > Goodmorning, > As the previous operator said thank you a lot for this great sounding > sat! It was booming all tha pass. > A lot of traffic on the air! But the narrow FM is an issue for those > who do not use it... > > > > > 73 de SW1IXP > ___ 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] SO-67 over Europe thanks for test
Hi all, SO-67 worked great over Europe this morning. The downlink signal is the largest I have seen for years :-) I used FMN with mike gain turned down. That is far the best way to work the uplink. Some stations with a too wide deviation even made the downlink change amplitude - or cut it off. I used normal FM on the receive side. Worked G3VZV and IZ1ERR. Lots of other stations on. Thanks for a new satellite for us to use. 73 OZ1MY Ib ___ 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: FW: Sumba Test Schedule
Hi Piraja, Most probably they just upload a job to Sumbandila to be executed at the specified time. That is done by the control stations in SA. Just speculation on my part. Have a nice Sunday. 73 OZ1MY Ib - Original Message - From: "ps8rf Piraja" To: Sent: Sunday, October 25, 2009 3:22 PM Subject: [amsat-bb] FW: Sumba Test Schedule Hello Piero, The times reported on the website of SA AMSAT ( http://www.amsatsa.org.za ) and with the time told by Mike, DK3WN (thanks Mike) do not correspond with the schedules resulting from my simulations. For the Sumba not go active on Europe the satellite had to be activated and deactivated in the region of Africa the same would happen to North America, but I do not know if someone has the privilege of controller in North America to enable and disable the transponder. I do not know if I was wrong or the controlers team of Sumba have mistake with respect to time and the regions reported. 73, Piraja, PS8RF. > Date: Sat, 24 Oct 2009 13:11:02 +0200 > From: pbaud...@formatnet.it > To: ps...@hotmail.com > Subject: Re: [amsat-bb] Sumba Test Schedule > > ps8rf Piraja ha scritto: > > The SA Amsat warns on its website that tomorrow 24th October, will test the tranponder of SumbandilaSat. Some regions of the planet will have the privilege. So, good luck. > > > > > > Test Schedule > > > > 24 October all times in UTC: > > > > 07:35 – 07:46 (over Eastern part of Southern Africa) > > > > 09:06 – 09:21 (over central part of Southern Africa) > > > > 19:52 – 20:03 (over Western part of Canada / North America) > > > > 20:42 – 20:55 (over Eastern part of Southern Africa) > > > > 22:15 – 22:27 (over central part of Southern Africa) > > > Hi Pirajá, > > when another test over central Europe ? > > '73 de Piero IZ1ERR _ Você sabia que pode acessar o Messenger direto do seu Hotmail? Descubra como! http://www.microsoft.com/brasil/windows/windowslive/products/tutoriais.aspx ___ 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] Thanks for the many positive remarks to FM satellites over Europe
HI all, I got an overwhelming responce to the e-mail :-) NO negative ones - that is the best thing about it. May be the problem makers do not read amsat-bb :-( That leaves it to us to help them to a good operating practice. An e-mail like that probably must go out at least once a year since we get new operators (good thing) on the satellites. Thanks to all who responded. Greetings from sunny and cold Copenhagen. 73 OZ1MY Ib ___ 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] FM satellite operations again again over Europe
Hi all in Europe, It is obviously about time to repeate a few good points about operating via the FM repeater satellites. 1. Do not transmit if you can not hear it 2. When the satellite is busy - limit the number of QSO's to ONE 3. Do not call over an ongoing QSO 4. A valid QSO just needs the call and the report 5. Give way to weak stations like /p and /m 6. Allow DX-peditions to make as many QSO's as there are callers That was the short version :-) I have a long version in English, Italian, Russian, Spanish and French. I can send it to you if you want it. Could use a few other languages like Greek, Polish and others. It would be nice if you can get it in your national journals. And please no flames ! 73 OZ1MY Ib ___ 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] please be positive
Hi -bb, I do not know if I speak for a large number of receivers from the amsat - bb - but it is sometimes difficult to read and understand the "finer" details of such a conversation as has taken place over the last days. That is when our first language is not English/American. It started with John's e-mail, which was not easy to understand in any other way than a large criticism of the way AMSAT is run these days. May be it looks different for people with a better mastering of English - but to me it appeared very negative and non constructive. If there are mistakes on the homepage - why not just point that out, and that is it ? Criticism can be positive and constructive and lead to improvements for the better of AMSAT worldwide - but unfortunately also to the opposite. Please (all) try to be constructive and positive. I think most of us will appreciate that :-) Hope this e-mail is understandable. My native language is Danish. 73 OZ1MY Ib ___ 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] FO-29 problems ?
Hi all, FO-29 seems to be OFF ? There are reports on http://oscar.dcarr.org to indicate that. During a pass with AOS at 1910 UTC here in Copenhagen with a max. elevation of 30 degrees, I heard no signals from FO-29. There was some noise at 435.850 MHz (corrected for doppler shift) in the start of the pass - but that was all ? It may be something local. I did check 435.910 MHz as well - and no signal. Has anyone heard anything ? 73 OZ1MY Ib ___ 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] AO-51 repeater uplink on 145.880 MHz
Hi all, The uplink right now is on 145.880 MHz. It may change later. 73 OZ1MY Ib ___ 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: Use of ICOM 910 for AO-51 L-Band BBS Uplink?
Hi Jim, I use the same setup - but for analog uplink. Antennas are two 19 turn helix stacked about 2 wavelength above one another. The combined gain is 18 dBiC. That works most of the time - but EIRP is a bit low when AO-51 is at 3000 km range. For the digital uplink I think you need more EIRP. Either add a PA with 30 to 50 W out or larger antenna(s). 73 OZ1MY Ib - Original Message - From: "Jim Heck" To: Sent: Thursday, August 20, 2009 11:05 AM Subject: [amsat-bb] Use of ICOM 910 for AO-51 L-Band BBS Uplink? > Hi Folks, > > I would be interested to know if anyone is using an ICOM 910 with the L-Band > module for Ao-51 uplink on the BBS? (The optional L-Band unit for the 910 runs 10 > watts according to the book). > > I am particularly interested to know what type/gain of antenna I would need to get > a reliable up link. I am planning to use about 20 metres of Ecoflex 10, which will > introduce a loss of something like 3 Dbs. > > I know that the LBand/Digital up link is currently off, just gettting ready for > the next 'on' period! > > 73s > > Jim G3WGM > > ___ > 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: Arrow Antennas twist or not
Hi all, I think we need some clarification. Which satellite(s)are we talking about, when receiving with the ARROWS antenna ? The ARROW antenna are linearly polarised. What latitude is your QTH ? Regarding satellites - some have linear polarisation - some have circular polarisation. AO-51 has Right Hand Circular Polarisation on the "normal" repeater downlink (435.300 MHz), SO-50 has linear polarisation - the same applies to AO-27. The satellites attitude are stabilised with permanet magnets. This may give different results depending upon where you are. Here in Copenhagen it is a great advantage to "twist" the ARROWS antenna to improve the downlink signal from AO-27. We are close to the North Pole (hi) Everyone may be right :-) 73 OZ1MY Ib - Original Message - From: "Roger Kolakowski" To: "Clint Bradford" ; Sent: Sunday, August 16, 2009 11:34 PM Subject: [amsat-bb] Re: Arrow Antennas > I will say that I can improve my 437 reception by rotating the beam...I also > have gotten better signals by aiming the beam at a point on the ground 100 > feet away... > > Why criticize? Everyone else can do anything they want to their antennas > without me getting upset...afterall, it's not MY antenna. > > Now if someone wants to point me toward scientific theory, antenna modeling > programs, propagation theory...then I can stand up and listen...until then, > my best signal is most important to me. > > Roger > WA1KAT > > > Roger > WA1KAT > - Original Message - > From: "Clint Bradford" > To: ; > Sent: Sunday, August 16, 2009 4:19 PM > Subject: [amsat-bb] Re: Arrow Antennas > > > > > ... Why are we modifying the Arrow? > > > > > ... Because someone's analysis says the element length is all wrong ... > > > > So Al Lowe's software program which he used to design these is all wrong? > > > > Sorry to get defensive on Al's behalf. This thread just "feels" like a > re-hash of an "engineer's view vs. real world results" argument. Like when I > was told here - by engineers - that it mattered how I twisted my Arrow while > working the sats. "Ya gotta take polarization into account, Clint - there's > a 22db difference when you turn your antenna 90 degrees - a tremendous > performance hit if you don't take this into account ... " > > > > Yet in the real world of demonstrating workin' the birds, there's no such > performance degradation. I have hundreds of witnesses to this fact: Capture > SO-50 and AO-51 with the Arrow and operate TX and RX while twisting the > antenna in different angles doesn't change the great reception and > transmission quality. > > > > If you are in the market for an Arrow, I simply suggest that you use it as > offered to you. You will be pleased with its 2M and 440 amateur bands > performance. And leave the modding of the elements w-a-y on the bottom of > your "things to do" lists. > > > > Clint Bradford > > > > -- > > Clint Bradford, K6LCS > > http://www.clintbradford.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: AO-51
Hi Roberto, Yes - you are right - but we are working on getting it back. 73 OZ1MY Ib - Original Message - From: "Roberto" To: Sent: Monday, July 27, 2009 10:30 AM Subject: [amsat-bb] AO-51 > SAT - AO51 , not heard europe ? > > http://oscar.dcarr.org/ > > 73 de iw5bsf Roberto > Coordinator A.R.I Satelliti > http://www.webalice.it/iw5bsf/ > ___ > 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] Messages on the report page
Hi all, Please do not take this too serious. Right now I see a report on: http://oscar.dcarr.org saying that the crew is active on AO-7 in mode-A ? In my head I see small green men/women manning AO-7 :-) I just wanted to remind you about the possibility to report on that page. I did not put the small green men/women report up myself. 73 OZ1MY Ib ___ 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: true duplex radios
Hi Martin and other AMSAT'ers,
This is a bit beside the subject but I seemed to recall that
OSCAR-III was running full duplex in the 2 metre band:
http://www.amsat.org/amsat-new/satellites/satInfo.php?satID=26&retURL=satellites/all_oscars.php
That is not on the same frequency - but the same band.
If you look at some systems like the Marisat system or some
of the scientific satellites in the 2 GHz band it is the same.
To return to the subject I hope someone will gather all the
information about full duplex transceivers that have been
on the amsat-bb during the last days.
73 OZ1MY
Ib
- Original Message -
From: "Martin"
Cc:
Sent: Tuesday, June 02, 2009 9:02 PM
Subject: [amsat-bb] Re: true duplex radios
Hi Jim and others.
For ordinary Repeaters the Rx/Tx in the same band is mandatory. But just
think of the filtering needed for TX'ing lots og watts just 600kHz away
from your Rx-frq.
This is also the reason why most repeaters (at least that I know of)
uses really big cavity-filters.
But for Rx/Tx on the same frequency - Forget it. What would be the
purpose anyway?
In my terms, a full-duplex radio is a radio that listens on one band,
whilst transmitting on another.
Regards
OZ1TMM, Martin
Jim Heck wrote:
> Hi All,
>
> In my experience, you dont have to listen to the output channal of a
repeater,
> while transmitting to its input, ie you dont have to hear your own signals
coming
> back through the repeater. BUT you do (ideally) when working through a
satellite.
>
> Again im my experience, such a radio as Greg has described is called a
"half
> duplex" one.
>
> The big advantage of using a full duplex radio for satellites is that
you can
> check if you are being rebroadcast by the satellite or not, without
relying on
> others to tell you. (You can also change the polority of the up link
signal, for
> maximium smoke!)
>
> 73 Jim G3WGM
>
>> -Original Message-
>> From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org]on
>> Behalf Of Greg D.
>> Sent: 02 June 2009 07:12
>> To: clintbra...@earthlink.net; amsat-bb@amsat.org
>> Subject: [amsat-bb] Re: true duplex radios
>>
>>
>>
>> {queue thunder clap}
>>
>> Wait a minute... How can a radio be capable of cross-band repeat and not
>> be full duplex? I believe the answer is no. Cross-band (analog)
>> repeating is inherently full duplex. So, perhaps this is a simple way to
>> ask a non-satellite person, without having to explain what duplex means.
>>
>> By the way, my Alinco DR-610 mobile rig is also full-duplex. You may add
>> it to the list. (In fact, it's got some down-right-weird modes, between
>> the two sides of the radio, that it's sometimes anyone's guess what will
>> happen when you key up.)
>>
>> Greg KO6TH
>>
>>> From: clintbra...@earthlink.net
>>> To: amsat-bb@amsat.org
>>> Date: Mon, 1 Jun 2009 12:37:16 -0700
>>> Subject: [amsat-bb] Re: true duplex radios
>>>
>>> >> ... Yaesu FT-8800 ...
>>>
>>> Really? Dual-receive, indeed. And will perform crossband repeating.
>>> But I can transmit on one band and simultaneously hear myself on
>>> another with a FT-8800?
>>> ___
>>> 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!
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>> _
>> Lauren found her dream laptop. Find the PC that’s right for you.
>> http://www.microsoft.com/windows/choosepc/?ocid=ftp_val_wl_290
>> ___
>> Sent via amsat...@amsat.org. Opinions expressed are those of the author.
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program!
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>>
>> No virus found in this incoming message.
>> Checked by AVG - www.avg.com
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>> 05/31/09 20:45:00
>>
>
> ___
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[amsat-bb] Re: true duplex radios
Hi, I do not see the Kenwood TS-790 base station ? 73 OZ1MY Ib - Original Message - From: "RFI-EMI-GUY" To: Sent: Monday, June 01, 2009 3:36 PM Subject: [amsat-bb] Re: true duplex radios Craig; I have added a couple ICOM radios (IC-Delta-100 and IC-970)to the list below: Message: 5 Date: Sun, 31 May 2009 15:42:12 -0700 From: "D. Craig Fox" Subject: [amsat-bb] true duplex radios To: "Amsat \(E-mail\)" Message-ID: Content-Type: text/plain; charset="iso-8859-1" At the request of several following my late night post, set forth below is the list I copied off this or the VX-8 listserv. I have added the new Alinco. I do not think this list is complete so others please feel free to add to it. 73s Craig N6RSX HTs - Icom IC-W2A Icom IC-W31A Icom IC-W32 Yaesu FT-470 Yaesu FT-530 Yaesu FT-50R Yaesu FR-51R Kenwood TH-D7 Kenwood TH-77 Kenwood TH-78 Alinco DJ-G5T Alinco DJ-580T Alinco DJ-G7 Mobile rigs - Kenwood TM741 Kenwood TM742 Kenwood TM941 Kenwood TM942 Kenwood TM732 Kenwood TM-D700/710 Yaesu FT-5100 Yaesu FT-5200 Yaesu FT-8800 Yaesu FT-8900 Icom 2728H Icom IC2800 *Icom IC-Delta-100* Base rigs - Yaesu FT-736 Yaesu FT-847 Kenwood TS-2000 Icom 820 Icom 821 Icom IC-910H *Icom IC-970* NOTICE: This communication may contain privileged or other confidential information. If you are not the intended recipient of this communication, or an employee or agent responsible for delivering this communication to the intended recipient, please advise the sender by reply email and immediately delete the message and any attachments without copying or disclosing the contents. Thank you. -- Joe Leikhim K4SAT "The RFI-EMI-GUY"© "Use only Genuine Interocitor Parts" Tom Servo ;-P ___ 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
