[amsat-bb] Re: AO-51 Down
Drew wrote: "We have been very close to the low battery trip points due to continued attempted use in eclipse in the southern hemisphere." The Southern hemisphere is a fairly large area, please be more specific. The statement you made creates doubt about our operating habits implying that we are irresponsible operators. AO-51 is not in eclipse whilst it in range of Southern Africa. This is based on the information as given by SatPC32. Greetings. 73, Pierre ZS6BB ___ 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 Down??
As much as I hate to say this, but I agree, given the state AO-51 is in. If only to prolong its life, I vote to turn it off or switch to a less used mode...just my two cents. 73's Peter VE7NGP -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Luc Leblanc Sent: June 15, 2010 21:17 To: amsat-bb@amsat.org Subject: [amsat-bb] Re: AO-51 Down?? I don't know if it is sound to let AO-51 on during the Field Day? It look like a bit suicidal!! "-" Luc Leblanc VE2DWE Skype VE2DWE www.qsl.net/ve2dwe DSTAR urcall VE2DWE WAC BASIC CW PHONE SATELLITE ___ 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 Down??
I don't know if it is sound to let AO-51 on during the Field Day? It look like a bit suicidal!! "-" Luc Leblanc VE2DWE Skype VE2DWE www.qsl.net/ve2dwe DSTAR urcall VE2DWE WAC BASIC CW PHONE SATELLITE ___ 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 Down??
Hi Drew, The point of my email was to suggest that based on my observations, and knowledge of operations "down under", the fact that AO-51 is sometimes on in eclipse may not necessarily be caused by bad operators. There seems to be evidence to indicate that the transponder can be triggered for other reasons. There is only a very small group of regular operators in VK and I am the only currently active ZL on AO-51 and we are all well aware of the eclipse problem. A turn on at 1758z for example is 3:58am local time in VK. None of the regular operators operate at that time of the day. I can not guarantee of course that some rogue operator who never otherwise appears on the satellites is triggering the system but it seems unlikely. As a general observation I would point out that operations in this part of the world differ markedly from the Northern hemisphere. I have never to my knowledge exchanged a grid square. A typical pass consists of 2 to 5 stations, all well known to each other, and we simply have a round table discussion. It is this fact that gives me reasonable confidence as to whether or not there is operation in eclipse. 73 Alan ZL2BX -Original Message- From: Andrew Glasbrenner [mailto:glasbren...@mindspring.com] Sent: Wednesday, 16 June 2010 02:14 To: Alan Cresswell Cc: 'Rick - WA4NVM'; 'AMSAT BB' Subject: Re: [amsat-bb] Re: AO-51 Down?? Alan Cresswell wrote: > Hi Drew, > > Well the southern hemisphere is a big place and I can assure you there is no > operation in eclipse from VK/ZL. I monitor almost all evening passes here > which occur shortly after the eclipse and on a number of occasions I have > noted that the transponder was on at my AOS. It also tends to drop out > shortly after AOS so given the length of the timer this would indicate a > turn on somewhat south of ZL. This would also correspond to the time AO-51 > comes out of eclipse. My first guess would be that sometimes the > transponder is triggered as it comes out of eclipse as there are no stations > south of ZL to trigger it. There is also continual switching between the > normal and reduced power levels during the evening passes. I presume this > indicates a marginal condition so perhaps usage down this way should be > limited for a time after eclipse as well to give the batteries time to > recover. > > Alan > ZL2BX > > I'm looking at a Whole Orbit Data file right now from 6/12 that indicates use at 2116Z and 1758Z, over Australia and New Zealand, in eclipse. Other files show similar patterns. I'm sure however that we will have the exact same problems, and worse, over the northern hemisphere during our winter eclipses! It may also be that the PL decoder is occasionally decoding falsely, which would mean a longer sample time might help. The software does not increase power after eclipse until a set voltage is reached. I think the solution will be to lower the intermediate power step to zero, as the low one is, and then there will be no use possible during eclipse, but also with occasional periodic dropouts during poor attitudes during the rest of the orbit. Regardless, my comment was not meant as a slight to anyone, and was merely based on observation of the WOD. We can see pretty much everything that happens in 30s intervals. Thanks for the observations. 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: AO-51 Down??
Alan Cresswell wrote: > Hi Drew, > > Well the southern hemisphere is a big place and I can assure you there is no > operation in eclipse from VK/ZL. I monitor almost all evening passes here > which occur shortly after the eclipse and on a number of occasions I have > noted that the transponder was on at my AOS. It also tends to drop out > shortly after AOS so given the length of the timer this would indicate a > turn on somewhat south of ZL. This would also correspond to the time AO-51 > comes out of eclipse. My first guess would be that sometimes the > transponder is triggered as it comes out of eclipse as there are no stations > south of ZL to trigger it. There is also continual switching between the > normal and reduced power levels during the evening passes. I presume this > indicates a marginal condition so perhaps usage down this way should be > limited for a time after eclipse as well to give the batteries time to > recover. > > Alan > ZL2BX > > I'm looking at a Whole Orbit Data file right now from 6/12 that indicates use at 2116Z and 1758Z, over Australia and New Zealand, in eclipse. Other files show similar patterns. I'm sure however that we will have the exact same problems, and worse, over the northern hemisphere during our winter eclipses! It may also be that the PL decoder is occasionally decoding falsely, which would mean a longer sample time might help. The software does not increase power after eclipse until a set voltage is reached. I think the solution will be to lower the intermediate power step to zero, as the low one is, and then there will be no use possible during eclipse, but also with occasional periodic dropouts during poor attitudes during the rest of the orbit. Regardless, my comment was not meant as a slight to anyone, and was merely based on observation of the WOD. We can see pretty much everything that happens in 30s intervals. Thanks for the observations. 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: AO-51 Down??
Hi Drew, Well the southern hemisphere is a big place and I can assure you there is no operation in eclipse from VK/ZL. I monitor almost all evening passes here which occur shortly after the eclipse and on a number of occasions I have noted that the transponder was on at my AOS. It also tends to drop out shortly after AOS so given the length of the timer this would indicate a turn on somewhat south of ZL. This would also correspond to the time AO-51 comes out of eclipse. My first guess would be that sometimes the transponder is triggered as it comes out of eclipse as there are no stations south of ZL to trigger it. There is also continual switching between the normal and reduced power levels during the evening passes. I presume this indicates a marginal condition so perhaps usage down this way should be limited for a time after eclipse as well to give the batteries time to recover. Alan ZL2BX -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Andrew Glasbrenner Sent: Wednesday, 16 June 2010 00:54 To: Rick - WA4NVM Cc: AMSAT BB Subject: [amsat-bb] Re: AO-51 Down?? Rick - WA4NVM wrote: > Hi All, > > I haven't heard the bird the last two orbits. I double checked the sked no change. > > 73 all, > > Rick WA4NVM > We have been very close to the low battery trip points due to continued attempted use in eclipse in the southern hemispere. I'll try to reset things first available pass, probably tomorrow AM EDT. 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: AO-51 Down??
Rick - WA4NVM wrote: > Hi All, > > I haven't heard the bird the last two orbits. I double checked the sked > no change. > > 73 all, > > Rick WA4NVM > We have been very close to the low battery trip points due to continued attempted use in eclipse in the southern hemispere. I'll try to reset things first available pass, probably tomorrow AM EDT. 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] AO51
Hello, I have not been able to make connection thru the repeater on AO51. I was successful yesterday. Doppler did track the down link freq. I could not hear my down link signal. Dale KL7XJ ___ 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 Down??
Hi All, I haven't heard the bird the last two orbits. I double checked the sked no change. 73 all, Rick WA4NVM ___ 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] W1AW/4 TI SC Contacts
Thanks to all who helped me with the satellite demonstration during the ARRL Teachers Institute in SC (EM84) today on AO27 around 1815Z today. If you would like a card for the contact, send a card to my home address (WA8SME), no SASE required. Mark Mark Spencer, WA8SME Education and Technology Program Coordinator ARRL, the national association for Amateur RadioT mspen...@arrl.org www.arrl.org/education-technology-program www.arrl.org/teachers-institute-on-wireless-technology 530-495-9150 ___ 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] Looking for KE3LB
Trying to get in touch With John KE3LB. I think I must have a bad address for him so John if your are reading this contact me wb8...@arrl.net .If anyone knows John ask him to drop me a e-mail. I am trying to QSL a contact and got a return to sender form his listed address on QRZ . Thanks for any help 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
[amsat-bb] Radio Hams Launch Today
Shannon Walker KD5DXB, Doug Wheelock KF5BOC and Fyodor Yurchikhin RN3FI launch for the space station today. The launch should be shown on NASA TV at 21:35 UT (17:35 EDT) at http://www.nasa.gov/multimedia/nasatv/index.html 73 Trevor M5AKA ___ 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: ICOM 471A Output N Connector replacement
Mike - Contact Scott Malcom, KA7MEF Technician and Lead Go'fer at MTS Repair. Scott worked for Icom Service, when this radio was new, and should be able to provide the necessary insight for your work. He also has access to some parts from junked/donor radios of that classic Icom era. Malcom Technical Support (MTS) 5130 Jackson Hwy Toledo, WA 98591-8680 Email: m...@toledotel.com Voice Mail: 360 864 8438 eHam.net reviews (126) scoring 4.9 out of 5.0 (excellent rating) http://www.eham.net/reviews/detail/1786 greg w9gb -- Message: 8 Date: Tue, 15 Jun 2010 06:16:31 GMT From: "mike casey" Subject: [amsat-bb] ICOM 471A Output N Connector replacement To: amsat-bb@amsat.org Message-ID: <20100615.021631.2646...@webmail05.dca.untd.com> Content-Type: text/plain; charset=windows-1252 Has anyone replaced the female N connector on the IC 471A, 25 watt tranceiver PA module? It seems as if the heat sink is trapped between the N connector barrel and the PA circuit board. Unless the connector barrel pulls off of the pin, I see no way of removing it, or the circuit board to get at the pin. I don't want to use to much force in pulling off the barrel. Perhaps heating the pin might release the barrel. Any suggestions? Should I send it to Icom and let them worry about it? ___ 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] ICOM 471A Output N Connector replacement
Has anyone replaced the female N connector on the IC 471A, 25 watt tranceiver PA module? It seems as if the heat sink is trapped between the N connector barrel and the PA circuit board. Unless the connector barrel pulls off of the pin, I see no way of removing it, or the circuit board to get at the pin. I don't want to use to much force in pulling off the barrel. Perhaps heating the pin might release the barrel. Any suggestions? Should I send it to Icom and let them worry about it? Artery Clearing Secret Nobel Prize Winning discovery cuts artery plaque by incredible 50%. http://thirdpartyoffers.netzero.net/TGL3241/4c171b0a911a53e57d6st02duc ___ 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: CP antenna from 2 WiFi panels
- Original Message - From: "Edward R Cole" To: "John Belstner" Cc: "AMSAT-BB" Sent: Tuesday, June 15, 2010 8:45 AM Subject: [amsat-bb] Re: CP antenna from 2 WiFi panels > Antenna arrived today. Shipping was $9.30 so total of $24.29. All > white plastic encapsulated: 4.5x4.5x1.0 inch and has four mounting > holes on the flange. I will mount it on a 1/8-inch thick aluminum > plate attached to my satellite elevation crossboom using > U-bolts. Very nice looking workmanship. 8 dBi gain translates > loosely to 6 dBd ( about the free-space gain of a 3-element yagi. > > 73, Ed - KL7UW Hi Ed, KL7UM What antenna model you purchased ? And for what use ? The HG2414P is a linearly polarized patch. http://www.34t.com/PDF/hg2414p.pdf The HG2409PC is a circular polarized patch (LH or RH available). http://www.34t.com/PDF/hg2409pc.pdf Tanks 73" de i8CVS Domenico ___ 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: CP antenna from 2 WiFi panels
Antenna arrived today. Shipping was $9.30 so total of $24.29. All white plastic encapsulated: 4.5x4.5x1.0 inch and has four mounting holes on the flange. I will mount it on a 1/8-inch thick aluminum plate attached to my satellite elevation crossboom using U-bolts. Very nice looking workmanship. 8 dBi gain translates loosely to 6 dBd ( about the free-space gain of a 3-element yagi. 73, Ed - KL7UW At 06:58 AM 6/9/2010, John Belstner wrote: >Good price Ed. Its not worth the time trying to make something when >you can buy something for $15. >Good luck and let me know how it works. > >73, John > >On Jun 8, 2010, at 10:15 PM, Edward R Cole wrote: > > > Thanks, John! > > > > At 02:37 PM 6/7/2010, John Belstner wrote: > >> Hi Domenico, > >> > >> The HG2414P is a linearly polarized patch. > >> http://www.34t.com/PDF/hg2414p.pdf > >> > >> The HG2409PC is a circular polarized patch (LH or RH available). > >> http://www.34t.com/PDF/hg2409pc.pdf > > > > Just ordered one for $14.99+ shipping. I comes with 12-inch coax > with NF connector. Other cables and /or connectors for $36.99 > > > > > >> They are about the same price too. > >> > >> 73, John > >> > > > > > > 73, Ed - KL7UW, WD2XSH/45 > > == > > BP40IQ 500 KHz - 10-GHz www.kl7uw.com > > EME: 144-600w, 432-100w, 1296-60w, 3400-fall 2010 > > DUBUS Magazine USA Rep dubus...@hotmail.com > > == > > 73, Ed - KL7UW, WD2XSH/45 == BP40IQ 500 KHz - 10-GHz www.kl7uw.com EME: 144-600w, 432-100w, 1296-60w, 3400-fall 2010 DUBUS Magazine USA Rep dubus...@hotmail.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
