November 2015 - AMSAT-BB - mailman.amsat.org

Re: [amsat-bb] AMSAT-BB Digest, Vol 10, Issue 346
by Todd W. Deckard 09 Nov '15

09 Nov '15

It's not uncommon to hear Brazilian pirates on FLTSAT and UFO military satcom frequencies. I wonder if the recent crackdowns have pushed them to the OSCARS. Sent from my iPhone > On Nov 8, 2015, at 6:46 PM, amsat-bb-request(a)amsat.org wrote: > > Send AMSAT-BB mailing list submissions to > amsat-bb(a)amsat.org > > To subscribe or unsubscribe via the World Wide Web, visit > http://www.amsat.org/mailman/listinfo/amsat-bb > or, via email, send a message with subject or body 'help' to > amsat-bb-request(a)amsat.org > > You can reach the person managing the list at > amsat-bb-owner(a)amsat.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of AMSAT-BB digest..." > > > Today's Topics: > > 1. Re: FM signal on FO-29? (Zach Leffke) > 2. Re: FM signal on FO-29? (Burns Fisher) > 3. Re: FM signal on FO-29? (Robert Bruninga) > 4. Re: FM signal on FO-29? (Robert Bruninga) > 5. Re: FM signal on FO-29? (Zach Leffke) > 6. Re: FM signal on FO-29? (Hector W5CBF/CO6CBF) > 7. Re: FM signal on FO-29? (Zach Leffke) > 8. Re: FM signal on FO-29? (Zach Leffke) > 9. Re: FM signal on FO-29 (VK4NBL) > 10. Re: Frequency chart and satellite information -online- (Ted) > 11. Fm activity on FO29 (jeffory broughton) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Sun, 8 Nov 2015 17:54:28 -0500 > From: Zach Leffke <zleffke(a)vt.edu> > To: amsat-bb(a)amsat.org > Subject: Re: [amsat-bb] FM signal on FO-29? > Message-ID: <563FD2A4.9050200(a)vt.edu> > Content-Type: text/plain; charset=windows-1252; format=flowed > > Send AMSAT-BB mailing list submissions to > amsat-bb(a)amsat.org > > To subscribe or unsubscribe via the World Wide Web, visit > http://www.amsat.org/mailman/listinfo/amsat-bb > or, via email, send a message with subject or body 'help' to > amsat-bb-request(a)amsat.org > > You can reach the person managing the list at > amsat-bb-owner(a)amsat.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of AMSAT-BB digest..." > > > Today's Topics: > > 1. Re: FM signal on FO-29? (Zach Leffke) > 2. Re: FM signal on FO-29? (Burns Fisher) > 3. Re: FM signal on FO-29? (Robert Bruninga) > 4. Re: FM signal on FO-29? (Robert Bruninga) > 5. Re: FM signal on FO-29? (Zach Leffke) > 6. Re: FM signal on FO-29? (Hector W5CBF/CO6CBF) > 7. Re: FM signal on FO-29? (Zach Leffke) > 8. Re: FM signal on FO-29? (Zach Leffke) > 9. Re: FM signal on FO-29 (VK4NBL) > 10. Re: Frequency chart and satellite information -online- (Ted) > 11. Fm activity on FO29 (jeffory broughton) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Sun, 8 Nov 2015 17:54:28 -0500 > From: Zach Leffke <zleffke(a)vt.edu> > To: amsat-bb(a)amsat.org > Subject: Re: [amsat-bb] FM signal on FO-29? > Message-ID: <563FD2A4.9050200(a)vt.edu> > Content-Type: text/plain; charset=windows-1252; format=flowed > > well.. when I say students, I meant graduate students at VT that > happened to be in the lab when I was doing the experiment. They work > with me and Bob, so a few crude words here and there aren't uncommon to > them. > > But good point, probably not the best thing for a public demo if your > audience is a bit younger. > > Actually, I've seen so much FM activity (basically every time I've > monitored FO-29 since we first came online in late september) that I've > been toying with the idea of trying to locate where the source emitters > actually are located based on doppler shift data. We know the doppler > between the receiving ground station and FO-29, so we can back that > out. We know the transponder mapping, so we can work through that to > determine what the center frequency is as the signal enters the > transponder uplink receiver. What we don't know is the uplink doppler, > because we don't know where the emitter is and we don't know what exact > center frequency they are on (but I bet you its in 5kHz steps, maybe > 2.5kHz). So we have two unknowns. I'm betting there's a way to work > through it though, and with enough observations and by watching the rate > of change of the doppler, I bet there's a way to make an educated guess > on what their center freq and location are. > > Or if someone listening knows Spanish and/or Portugese, maybe we could > get lucky and hear what cross streets the taxi is going to (if it is in > fact a taxi). > > -Zach, KJ4QLP > >> On 11/08/2015 05:30 PM, Clayton W5PFG wrote: >> I wouldn't recommend playing the FM audio heard via FO-29 to a group >> of children. Normally it's not English. It's most likely NOT a >> religious broadcast based on their choice of crude words. >> >> 73 >> Clayton >> W5PFG >> >>> On 11/8/2015 16:13, Zach Leffke wrote: >>> So yes, in the last couple weeks I've seen a LOT of FM activity on >>> FO-29. And based on my experience with Friday's pass, which was >>> ascending, I'm leading towards the Central/South America QRM theory. >>> Lots of strong FM activity as the pass started and the satellite was >>> over the lower latitudes, but as FO-29 ascended over higher latitudes >>> towards the north pole, the FM activity died down. >>> >>> -Zach, KJ4QLP >> _______________________________________________ >> Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available >> to all interested persons worldwide without requiring membership. >> Opinions expressed >> are solely those of the author, and do not reflect the official views >> of AMSAT-NA. >> Not an AMSAT-NA member? Join now to support the amateur satellite >> program! >> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb > > > > ------------------------------ > > Message: 2 > Date: Sun, 8 Nov 2015 18:04:49 -0500 > From: Burns Fisher <burns(a)fisher.cc> > To: Paul Stoetzer <n8hm(a)arrl.net> > Cc: Clayton W5PFG <w5pfg(a)amsat.org>, "amsat-bb(a)amsat.org" > <amsat-bb(a)amsat.org> > Subject: Re: [amsat-bb] FM signal on FO-29? > Message-ID: > <CABX7KxWCRhJ+3093GEruVQcBgLhpHhQYqGR9bLmAgTC+4hy3QQ(a)mail.gmail.com> > Content-Type: text/plain; charset=UTF-8 > > Fun and interesting! AO85 and AO73 have been coinciding frequently of > late, but they are not compatible. > >> On Sun, Nov 8, 2015 at 5:33 PM, Paul Stoetzer <n8hm(a)arrl.net> wrote: >> Speaking of FM signals on FO-29, you'll be able to hear the AO-85 >> transponder through FO-29 when their paths cross as well. I wonder if >> you could get a high enough SNR to decode the DUV... >> >> 73, >> >> Paul, N8HM >> >>> On Sun, Nov 8, 2015 at 5:30 PM, Clayton W5PFG <w5pfg(a)amsat.org> wrote: >>> I wouldn't recommend playing the FM audio heard via FO-29 to a group of >>> children. Normally it's not English. It's most likely NOT a religious >>> broadcast based on their choice of crude words. >>> >>> 73 >>> Clayton >>> W5PFG >>> >>>> On 11/8/2015 16:13, Zach Leffke wrote: >>>> >>>> So yes, in the last couple weeks I've seen a LOT of FM activity on >>>> FO-29. And based on my experience with Friday's pass, which was >>>> ascending, I'm leading towards the Central/South America QRM theory. >>>> Lots of strong FM activity as the pass started and the satellite was >>>> over the lower latitudes, but as FO-29 ascended over higher latitudes >>>> towards the north pole, the FM activity died down. >>>> >>>> -Zach, KJ4QLP >>> >>> _______________________________________________ >>> Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available >>> to all interested persons worldwide without requiring membership. Opinions >>> expressed >>> are solely those of the author, and do not reflect the official views of >>> AMSAT-NA. >>> Not an AMSAT-NA member? Join now to support the amateur satellite program! >>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb >> _______________________________________________ >> Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available >> to all interested persons worldwide without requiring membership. Opinions expressed >> are solely those of the author, and do not reflect the official views of AMSAT-NA. >> Not an AMSAT-NA member? Join now to support the amateur satellite program! >> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb > > > ------------------------------ > > Message: 3 > Date: Sun, 8 Nov 2015 18:10:48 -0500 > From: Robert Bruninga <bruninga(a)usna.edu> > To: Zach Leffke <zleffke(a)vt.edu> > Cc: amsat bb <amsat-bb(a)amsat.org> > Subject: Re: [amsat-bb] FM signal on FO-29? > Message-ID: > <CALdCfNK9ctph66fy-=+Cd4k6oPxYM4rUVVUNwbCduPtWdzLmKA(a)mail.gmail.com> > Content-Type: text/plain; charset=UTF-8 > > Zach > >> On Sun, Nov 8, 2015 at 5:54 PM, Zach Leffke <zleffke(a)vt.edu> wrote: >> >> well.. when I say students, I meant graduate students at VT that happened >> to be in the lab when I was doing the experiment. They work with me and >> Bob, so a few crude words here and there aren't uncommon to them. >> >> But good point, probably not the best thing for a public demo if your >> audience is a bit younger. >> >> Actually, I've seen so much FM activity (basically every time I've >> monitored FO-29 since we first came online in late september) that I've >> been toying with the idea of trying to locate where the source emitters >> actually are located based on doppler shift data. We know the doppler >> between the receiving ground station and FO-29, so we can back that out. >> We know the transponder mapping, so we can work through that to determine >> what the center frequency is as the signal enters the transponder uplink >> receiver. What we don't know is the uplink doppler, because we don't know >> where the emitter is and we don't know what exact center frequency they are >> on (but I bet you its in 5kHz steps, maybe 2.5kHz). So we have two >> unknowns. I'm betting there's a way to work through it though, and with >> enough observations and by watching the rate of change of the doppler, I >> bet there's a way to make an educated guess on what their center freq and >> location are. >> >> Or if someone listening knows Spanish and/or Portugese, maybe we could get >> lucky and hear what cross streets the taxi is going to (if it is in fact a >> taxi). >> >> -Zach, KJ4QLP >> >>> On 11/08/2015 05:30 PM, Clayton W5PFG wrote: >>> >>> I wouldn't recommend playing the FM audio heard via FO-29 to a group of >>> children. Normally it's not English. It's most likely NOT a religious >>> broadcast based on their choice of crude words. >>> >>> 73 >>> Clayton >>> W5PFG >>> >>>> On 11/8/2015 16:13, Zach Leffke wrote: >>>> >>>> So yes, in the last couple weeks I've seen a LOT of FM activity on >>>> FO-29. And based on my experience with Friday's pass, which was >>>> ascending, I'm leading towards the Central/South America QRM theory. >>>> Lots of strong FM activity as the pass started and the satellite was >>>> over the lower latitudes, but as FO-29 ascended over higher latitudes >>>> towards the north pole, the FM activity died down. >>>> >>>> -Zach, KJ4QLP >>>> >>> _______________________________________________ >>> Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available >>> to all interested persons worldwide without requiring membership. >>> Opinions expressed >>> are solely those of the author, and do not reflect the official views of >>> AMSAT-NA. >>> Not an AMSAT-NA member? Join now to support the amateur satellite program! >>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb >>> >> >> _______________________________________________ >> Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available >> to all interested persons worldwide without requiring membership. Opinions >> expressed >> are solely those of the author, and do not reflect the official views of >> AMSAT-NA. >> Not an AMSAT-NA member? Join now to support the amateur satellite program! >> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb >> > > > ------------------------------ > > Message: 4 > Date: Sun, 8 Nov 2015 18:12:35 -0500 > From: Robert Bruninga <bruninga(a)usna.edu> > To: Zach Leffke <zleffke(a)vt.edu> > Cc: amsat bb <amsat-bb(a)amsat.org> > Subject: Re: [amsat-bb] FM signal on FO-29? > Message-ID: > <CALdCfN+cyT1Cj_KYyeXisB_Hds5runD6fOoRfkLuohdfSC+u6Q(a)mail.gmail.com> > Content-Type: text/plain; charset=UTF-8 > > Zach > You dont need to know the senders exact freq, just a plot of his freq > during the pass will form an "S" curve and once you have enough of the "S", > you can know his center freq, and hence his closest point of approach. > That gives a line of bearing. Anothe pass gives another one, and so on... > > bob > >> On Sun, Nov 8, 2015 at 5:54 PM, Zach Leffke <zleffke(a)vt.edu> wrote: >> >> well.. when I say students, I meant graduate students at VT that happened >> to be in the lab when I was doing the experiment. They work with me and >> Bob, so a few crude words here and there aren't uncommon to them. >> >> But good point, probably not the best thing for a public demo if your >> audience is a bit younger. >> >> Actually, I've seen so much FM activity (basically every time I've >> monitored FO-29 since we first came online in late september) that I've >> been toying with the idea of trying to locate where the source emitters >> actually are located based on doppler shift data. We know the doppler >> between the receiving ground station and FO-29, so we can back that out. >> We know the transponder mapping, so we can work through that to determine >> what the center frequency is as the signal enters the transponder uplink >> receiver. What we don't know is the uplink doppler, because we don't know >> where the emitter is and we don't know what exact center frequency they are >> on (but I bet you its in 5kHz steps, maybe 2.5kHz). So we have two >> unknowns. I'm betting there's a way to work through it though, and with >> enough observations and by watching the rate of change of the doppler, I >> bet there's a way to make an educated guess on what their center freq and >> location are. >> >> Or if someone listening knows Spanish and/or Portugese, maybe we could get >> lucky and hear what cross streets the taxi is going to (if it is in fact a >> taxi). >> >> -Zach, KJ4QLP >> >>> On 11/08/2015 05:30 PM, Clayton W5PFG wrote: >>> >>> I wouldn't recommend playing the FM audio heard via FO-29 to a group of >>> children. Normally it's not English. It's most likely NOT a religious >>> broadcast based on their choice of crude words. >>> >>> 73 >>> Clayton >>> W5PFG >>> >>>> On 11/8/2015 16:13, Zach Leffke wrote: >>>> >>>> So yes, in the last couple weeks I've seen a LOT of FM activity on >>>> FO-29. And based on my experience with Friday's pass, which was >>>> ascending, I'm leading towards the Central/South America QRM theory. >>>> Lots of strong FM activity as the pass started and the satellite was >>>> over the lower latitudes, but as FO-29 ascended over higher latitudes >>>> towards the north pole, the FM activity died down. >>>> >>>> -Zach, KJ4QLP >>>> >>> _______________________________________________ >>> Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available >>> to all interested persons worldwide without requiring membership. >>> Opinions expressed >>> are solely those of the author, and do not reflect the official views of >>> AMSAT-NA. >>> Not an AMSAT-NA member? Join now to support the amateur satellite program! >>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb >>> >> >> _______________________________________________ >> Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available >> to all interested persons worldwide without requiring membership. Opinions >> expressed >> are solely those of the author, and do not reflect the official views of >> AMSAT-NA. >> Not an AMSAT-NA member? Join now to support the amateur satellite program! >> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb >> > > > ------------------------------ > > Message: 5 > Date: Sun, 8 Nov 2015 18:30:33 -0500 > From: Zach Leffke <zleffke(a)vt.edu> > To: amsat-bb(a)amsat.org > Subject: Re: [amsat-bb] FM signal on FO-29? > Message-ID: <563FDB19.7070501(a)vt.edu> > Content-Type: text/plain; charset=windows-1252; format=flowed > > Sweet, second cross link signal to look into! I missed that, you got > the gears turning....... > > So lets see.... 145.900MHz to 146.000MHz for FO-29 passband. > > A quick look through JE9PEL satlist reveals these downlinks: > > AO73 tlm bcn, 145.935 MHz > AO73 transponder, 145.970-145.950 MHz > AO85, 145.978 MHz > First-MOVE cubesat (NORAD ID 39439), 145.970MHz > DUCHIFAT, 145.980 MHz > QB50p1/FUNcube3 (EO-79) transponder, 145.970-145.945 MHz > VELOX-I, 145.980 MHz > UKube-1/FUNcube-2, 145.915 MHz > DeorbitSail, 145.975 MHz > CAS-3E (XW-2E) transponder, 145.935-145.915 MHz > CAS-3F (XW-2F) transponder, 146.000-146.980 MHz > Fox-1B, 145.960 MHz > Fox-1C, 145.920 MHz > > I guess its not that surprising when FO-29 has half of the 2m Satellite > Service allocation for its uplink. Next thing to do is figure out which > ones are the most likely to be successful based on power levels, > modulation schemes, transmission rate, which ones are using Forward > Error Correction, etc. And then look at the orbits for possible chain > events. > > fun stuff! > > Does anyone know the uplink receiver sensitivity and antenna gain/design > on FO-29? > > -Zach, KJ4QLP > > >> On 11/08/2015 05:33 PM, Paul Stoetzer wrote: >> Speaking of FM signals on FO-29, you'll be able to hear the AO-85 >> transponder through FO-29 when their paths cross as well. I wonder if >> you could get a high enough SNR to decode the DUV... >> >> 73, >> >> Paul, N8HM >> >>> On Sun, Nov 8, 2015 at 5:30 PM, Clayton W5PFG <w5pfg(a)amsat.org> wrote: >>> I wouldn't recommend playing the FM audio heard via FO-29 to a group of >>> children. Normally it's not English. It's most likely NOT a religious >>> broadcast based on their choice of crude words. >>> >>> 73 >>> Clayton >>> W5PFG >>> >>>> On 11/8/2015 16:13, Zach Leffke wrote: >>>> So yes, in the last couple weeks I've seen a LOT of FM activity on >>>> FO-29. And based on my experience with Friday's pass, which was >>>> ascending, I'm leading towards the Central/South America QRM theory. >>>> Lots of strong FM activity as the pass started and the satellite was >>>> over the lower latitudes, but as FO-29 ascended over higher latitudes >>>> towards the north pole, the FM activity died down. >>>> >>>> -Zach, KJ4QLP >>> _______________________________________________ >>> Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available >>> to all interested persons worldwide without requiring membership. Opinions >>> expressed >>> are solely those of the author, and do not reflect the official views of >>> AMSAT-NA. >>> Not an AMSAT-NA member? Join now to support the amateur satellite program! >>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb >> _______________________________________________ >> Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available >> to all interested persons worldwide without requiring membership. Opinions expressed >> are solely those of the author, and do not reflect the official views of AMSAT-NA. >> Not an AMSAT-NA member? Join now to support the amateur satellite program! >> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb > > > > ------------------------------ > > Message: 6 > Date: Sun, 8 Nov 2015 17:34:43 -0600 > From: "Hector W5CBF/CO6CBF" <kf5yxv(a)gmail.com> > To: "'Zach Leffke'" <zleffke(a)vt.edu>, <amsat-bb(a)amsat.org> > Subject: Re: [amsat-bb] FM signal on FO-29? > Message-ID: <01dd01d11a7e$0d033310$27099930$(a)gmail.com> > Content-Type: text/plain; charset="us-ascii" > > Hi Zach and group > > I think, the main problem is they are not always the same stations. I have > heard several different stations in terrestrial QSOs QRMing FO-29; majority > of them speaking Spanish and without any kind of ID. I have not heard them > recently, though. > > 73! > > Hector, CO6CBF/W5CBF > > -----Mensaje original----- > De: AMSAT-BB [mailto:amsat-bb-bounces@amsat.org] En nombre de Zach Leffke > Enviado el: Sunday, November 08, 2015 4:54 PM > Para: amsat-bb(a)amsat.org > Asunto: Re: [amsat-bb] FM signal on FO-29? > > well.. when I say students, I meant graduate students at VT that happened to > be in the lab when I was doing the experiment. They work with me and Bob, > so a few crude words here and there aren't uncommon to them. > > But good point, probably not the best thing for a public demo if your > audience is a bit younger. > > Actually, I've seen so much FM activity (basically every time I've monitored > FO-29 since we first came online in late september) that I've been toying > with the idea of trying to locate where the source emitters actually are > located based on doppler shift data. We know the doppler between the > receiving ground station and FO-29, so we can back that out. We know the > transponder mapping, so we can work through that to determine what the > center frequency is as the signal enters the transponder uplink receiver. > What we don't know is the uplink doppler, because we don't know where the > emitter is and we don't know what exact center frequency they are on (but I > bet you its in 5kHz steps, maybe 2.5kHz). So we have two unknowns. I'm > betting there's a way to work through it though, and with enough > observations and by watching the rate of change of the doppler, I bet > there's a way to make an educated guess on what their center freq and > location are. > > Or if someone listening knows Spanish and/or Portugese, maybe we could get > lucky and hear what cross streets the taxi is going to (if it is in fact a > taxi). > > -Zach, KJ4QLP > >> On 11/08/2015 05:30 PM, Clayton W5PFG wrote: >> I wouldn't recommend playing the FM audio heard via FO-29 to a group >> of children. Normally it's not English. It's most likely NOT a >> religious broadcast based on their choice of crude words. >> >> 73 >> Clayton >> W5PFG >> >>> On 11/8/2015 16:13, Zach Leffke wrote: >>> So yes, in the last couple weeks I've seen a LOT of FM activity on >>> FO-29. And based on my experience with Friday's pass, which was >>> ascending, I'm leading towards the Central/South America QRM theory. >>> Lots of strong FM activity as the pass started and the satellite was >>> over the lower latitudes, but as FO-29 ascended over higher latitudes >>> towards the north pole, the FM activity died down. >>> >>> -Zach, KJ4QLP >> _______________________________________________ >> Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available >> to all interested persons worldwide without requiring membership. >> Opinions expressed >> are solely those of the author, and do not reflect the official views >> of AMSAT-NA. >> Not an AMSAT-NA member? Join now to support the amateur satellite >> program! >> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb > > _______________________________________________ > Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all > interested persons worldwide without requiring membership. Opinions > expressed are solely those of the author, and do not reflect the official > views of AMSAT-NA. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb > > > > ------------------------------ > > Message: 7 > Date: Sun, 8 Nov 2015 18:40:48 -0500 > From: Zach Leffke <zleffke(a)vt.edu> > To: Hector W5CBF/CO6CBF <kf5yxv(a)gmail.com>, amsat-bb(a)amsat.org > Subject: Re: [amsat-bb] FM signal on FO-29? > Message-ID: <563FDD80.1010702(a)vt.edu> > Content-Type: text/plain; charset=windows-1252; format=flowed > > That makes sense Hector. I've seen the FM activity kind of all over the > transponder. More so than I would expect if it was the same transmitter > each time on the same frequency and the different pass geometries > causing a bit of swing due to doppler. > > > -Zach, KJ4QLP > >> On 11/08/2015 06:34 PM, Hector W5CBF/CO6CBF wrote: >> Hi Zach and group >> >> I think, the main problem is they are not always the same stations. I have >> heard several different stations in terrestrial QSOs QRMing FO-29; majority >> of them speaking Spanish and without any kind of ID. I have not heard them >> recently, though. >> >> 73! >> >> Hector, CO6CBF/W5CBF >> >> -----Mensaje original----- >> De: AMSAT-BB [mailto:amsat-bb-bounces@amsat.org] En nombre de Zach Leffke >> Enviado el: Sunday, November 08, 2015 4:54 PM >> Para: amsat-bb(a)amsat.org >> Asunto: Re: [amsat-bb] FM signal on FO-29? >> >> well.. when I say students, I meant graduate students at VT that happened to >> be in the lab when I was doing the experiment. They work with me and Bob, >> so a few crude words here and there aren't uncommon to them. >> >> But good point, probably not the best thing for a public demo if your >> audience is a bit younger. >> >> Actually, I've seen so much FM activity (basically every time I've monitored >> FO-29 since we first came online in late september) that I've been toying >> with the idea of trying to locate where the source emitters actually are >> located based on doppler shift data. We know the doppler between the >> receiving ground station and FO-29, so we can back that out. We know the >> transponder mapping, so we can work through that to determine what the >> center frequency is as the signal enters the transponder uplink receiver. >> What we don't know is the uplink doppler, because we don't know where the >> emitter is and we don't know what exact center frequency they are on (but I >> bet you its in 5kHz steps, maybe 2.5kHz). So we have two unknowns. I'm >> betting there's a way to work through it though, and with enough >> observations and by watching the rate of change of the doppler, I bet >> there's a way to make an educated guess on what their center freq and >> location are. >> >> Or if someone listening knows Spanish and/or Portugese, maybe we could get >> lucky and hear what cross streets the taxi is going to (if it is in fact a >> taxi). >> >> -Zach, KJ4QLP >> >>> On 11/08/2015 05:30 PM, Clayton W5PFG wrote: >>> I wouldn't recommend playing the FM audio heard via FO-29 to a group >>> of children. Normally it's not English. It's most likely NOT a >>> religious broadcast based on their choice of crude words. >>> >>> 73 >>> Clayton >>> W5PFG >>> >>>> On 11/8/2015 16:13, Zach Leffke wrote: >>>> So yes, in the last couple weeks I've seen a LOT of FM activity on >>>> FO-29. And based on my experience with Friday's pass, which was >>>> ascending, I'm leading towards the Central/South America QRM theory. >>>> Lots of strong FM activity as the pass started and the satellite was >>>> over the lower latitudes, but as FO-29 ascended over higher latitudes >>>> towards the north pole, the FM activity died down. >>>> >>>> -Zach, KJ4QLP >>> _______________________________________________ >>> Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available >>> to all interested persons worldwide without requiring membership. >>> Opinions expressed >>> are solely those of the author, and do not reflect the official views >>> of AMSAT-NA. >>> Not an AMSAT-NA member? Join now to support the amateur satellite >>> program! >>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb >> _______________________________________________ >> Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all >> interested persons worldwide without requiring membership. Opinions >> expressed are solely those of the author, and do not reflect the official >> views of AMSAT-NA. >> Not an AMSAT-NA member? Join now to support the amateur satellite program! >> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb >> > > > > ------------------------------ > > Message: 8 > Date: Sun, 8 Nov 2015 18:55:00 -0500 > From: Zach Leffke <zleffke(a)vt.edu> > To: Robert Bruninga <bruninga(a)usna.edu> > Cc: amsat bb <amsat-bb(a)amsat.org> > Subject: Re: [amsat-bb] FM signal on FO-29? > Message-ID: <563FE0D4.5020503(a)vt.edu> > Content-Type: text/plain; charset=utf-8; format=flowed > > Good point Bob. I haven't fully worked through the problem yet, but > thats pretty much right in line with what I'm thinking. Thats what I > meant by saying watching the 'rate of change of doppler.' When the > slope of the doppler s-curve is at a maximum, that should be the point > of closest approach. > > Actually, that brings up a question. Do you know what type of equation > would fit the doppler S-Curve profile? something that could be used to > generate a regression equation from a few doppler observations? > > -Zach, KJ4QLP > > >> On 11/08/2015 06:12 PM, Robert Bruninga wrote: >> Zach >> You dont need to know the senders exact freq, just a plot of his freq >> during the pass will form an "S" curve and once you have enough of the >> "S", you can know his center freq, and hence his closest point of >> approach. That gives a line of bearing. Anothe pass gives another >> one, and so on... >> >> bob >> >> On Sun, Nov 8, 2015 at 5:54 PM, Zach Leffke <zleffke(a)vt.edu >> <mailto:zleffke@vt.edu>> wrote: >> >> well.. when I say students, I meant graduate students at VT that >> happened to be in the lab when I was doing the experiment. They >> work with me and Bob, so a few crude words here and there aren't >> uncommon to them. >> >> But good point, probably not the best thing for a public demo if >> your audience is a bit younger. >> >> Actually, I've seen so much FM activity (basically every time I've >> monitored FO-29 since we first came online in late september) that >> I've been toying with the idea of trying to locate where the >> source emitters actually are located based on doppler shift data. >> We know the doppler between the receiving ground station and >> FO-29, so we can back that out. We know the transponder mapping, >> so we can work through that to determine what the center frequency >> is as the signal enters the transponder uplink receiver. What we >> don't know is the uplink doppler, because we don't know where the >> emitter is and we don't know what exact center frequency they are >> on (but I bet you its in 5kHz steps, maybe 2.5kHz). So we have >> two unknowns. I'm betting there's a way to work through it though, >> and with enough observations and by watching the rate of change of >> the doppler, I bet there's a way to make an educated guess on what >> their center freq and location are. >> >> Or if someone listening knows Spanish and/or Portugese, maybe we >> could get lucky and hear what cross streets the taxi is going to >> (if it is in fact a taxi). >> >> -Zach, KJ4QLP >> >> On 11/08/2015 05:30 PM, Clayton W5PFG wrote: >> >> I wouldn't recommend playing the FM audio heard via FO-29 to a >> group of children. Normally it's not English. It's most >> likely NOT a religious broadcast based on their choice of >> crude words. >> >> 73 >> Clayton >> W5PFG >> >> On 11/8/2015 16:13, Zach Leffke wrote: >> >> So yes, in the last couple weeks I've seen a LOT of FM >> activity on >> FO-29. And based on my experience with Friday's pass, >> which was >> ascending, I'm leading towards the Central/South America >> QRM theory. >> Lots of strong FM activity as the pass started and the >> satellite was >> over the lower latitudes, but as FO-29 ascended over >> higher latitudes >> towards the north pole, the FM activity died down. >> >> -Zach, KJ4QLP >> >> _______________________________________________ >> Sent via AMSAT-BB(a)amsat.org <mailto:AMSAT-BB@amsat.org>. >> AMSAT-NA makes this open forum available >> to all interested persons worldwide without requiring >> membership. Opinions expressed >> are solely those of the author, and do not reflect the >> official views of AMSAT-NA. >> Not an AMSAT-NA member? Join now to support the amateur >> satellite program! >> Subscription settings: >> http://www.amsat.org/mailman/listinfo/amsat-bb >> >> >> _______________________________________________ >> Sent via AMSAT-BB(a)amsat.org <mailto:AMSAT-BB@amsat.org>. AMSAT-NA >> makes this open forum available >> to all interested persons worldwide without requiring membership. >> Opinions expressed >> are solely those of the author, and do not reflect the official >> views of AMSAT-NA. >> Not an AMSAT-NA member? Join now to support the amateur satellite >> program! >> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb >> >> > > > > ------------------------------ > > Message: 9 > Date: Mon, 9 Nov 2015 10:21:57 +1000 > From: VK4NBL <vk4nbl(a)bigpond.com> > To: <amsat-bb(a)amsat.org> > Subject: Re: [amsat-bb] FM signal on FO-29 > Message-ID: <BLU436-SMTP20894C252E8F97C94778D4685150(a)phx.gbl> > Content-Type: text/plain; format=flowed; charset="iso-8859-1"; > reply-type=original > > > With regards to FM signals on FO-29, we can also here them here in > Australia. > This is most noticeable when the Sat is travelling South to North. > When it gets above Northern Queensland all we can hear is Indonesian fishing > boats on the 2m uplink. > It does suck the power from the Sat and usually ends some very good QSO's > long before LOS. > > 73 > Peter > vk4nbl > > > > ------------------------------ > > Message: 10 > Date: Sun, 8 Nov 2015 16:30:59 -0800 > From: "Ted" <k7trkradio(a)charter.net> > To: "'Stefan Wagener'" <wageners(a)gmail.com>, "'AMSAT BB'" > <amsat-bb(a)amsat.org> > Subject: Re: [amsat-bb] Frequency chart and satellite information > -online- > Message-ID: <000801d11a85$e8322cf0$b89686d0$(a)charter.net> > Content-Type: text/plain; charset="us-ascii" > > Good stuff, Stefan...tnx! > 73, K7trk > > -----Original Message----- > From: AMSAT-BB [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Stefan > Wagener > Sent: Sunday, November 08, 2015 6:12 AM > To: AMSAT BB > Subject: [amsat-bb] Frequency chart and satellite information -online- > > Hi folks, > > Some of the most comprehensive and very frequently updated sources of > amateur radio satellite information can be found here: > > 1. From Mineo Wakita, JE9PEL > > http://www.ne.jp/asahi/hamradio/je9pel/satslist.htm > > 2. From Mike Rupprecht, DK3WN > > http://www.dk3wn.info/satellites.shtml > > Bookmarked on my Mac for immediate access :-) > > Stefan, VE4NSA > _______________________________________________ > Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all > interested persons worldwide without requiring membership. Opinions > expressed are solely those of the author, and do not reflect the official > views of AMSAT-NA. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb > > > > ------------------------------ > > Message: 11 > Date: Sun, 8 Nov 2015 19:46:38 -0500 > From: jeffory broughton <jefforybroughton(a)gmail.com> > To: amsat-bb(a)amsat.org > Subject: [amsat-bb] Fm activity on FO29 > Message-ID: > <CACm2je12MnYrso645LUPCBvn58vCNsjingQA1DZpy+rgq5KXFg(a)mail.gmail.com> > Content-Type: text/plain; charset=UTF-8 > > A couple weeks ago . fo29 made a pass over canada.I am in michigan and I > was barely in the footprint when I clearly heard two guys loading trucks on > the upper end of the transponder .it almost had to be coming from canada. > > jeff broughton > > > ------------------------------ > > Subject: Digest Footer > > _______________________________________________ > Sent via amsat-bb(a)amsat.org. > AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed > are solely those of the author, and do not reflect the official views of AMSAT-NA. > Not an AMSAT member? Join now to support the amateur satellite program! > http://www.amsat.org/mailman/listinfo/amsat-bb > > ------------------------------ > > End of AMSAT-BB Digest, Vol 10, Issue 346 > *****************************************

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Upcoming ARISS contact with BORG Monsbergergasse, Graz, Austria
by n4csitwo＠bellsouth.net 09 Nov '15

09 Nov '15

An International Space Station school contact has been planned with participants at BORG Monsbergergasse, Graz, Austria on 09 Nov. The event is scheduled to begin at approximately 09:42 UTC. It is recommended that you start listening approximately 10 minutes before this time.The duration of the contact is approximately 9 minutes and 30 seconds. The contact will be direct between OR4ISS and OE0ARISS. The contact should be audible Austria and adjacent areas. Interested parties are invited to listen in on the 145.80 MHz downlink. The contact is expected to be conducted in English. The BORG Monsbergergasse is a grammar school in Graz, Monsbergergasse 16. Graz is the second largest city in Austria, located in the southeast of the country. The school can easily be reached from everywhere in Graz using public transport. About 800 students attend the school and there are about 100 teachers. Our students can choose between 5 different areas of interest: sports, science, music, art and informatics. After four to five years the students graduate from school after taking their A-levels. The school offers a fantastic infrastructure for the students. Apart from the classrooms there is a lab, a library and a cafeteria. There are special computer rooms, four gyms and outside there are several courts for doing sports. Besides there is a garden to relax in the breaks. Participants will ask as many of the following questions as time allows 1. If the astronauts did not train on the ISS which consequences would they have to face back on earth? 2. What measures are taken when an astronaut gets sick? 3. What kind of food are the astronauts allowed to eat? 4. What is your favourite food in space? 5. What is your daily routine on the ISS? 6. Do you wear special clothes on the ISS? 7. What do you do in your spare time? 8. People on water might suffer from seasickness. Is there a similar sickness in space? 9. Can you describe your feelings and emotions when you see the earth from above? 10. Do you think it will be possible for civilians to visit the space in the near future? 11. Do you miss your family and friends? 12. Can you think of any moments when you wanted to leave the ISS and return home? 13. What kind of research are you doing these days? 14. Which experiments do you consider the most interesting ones? 15. Do you also have fun on the ISS? 16. Have you ever noticed anything weird outside the ISS? 17. What are the risks of working in space? Does the ISS have an emergency escape system? 18. What would happen if there was a fire on ISS? 19. Does it sometimes happen that you forget something on earth which you would need in space? 20. Why do the times of overflight-forecasts sometimes change? PLEASE CHECK THE FOLLOWING FOR MORE INFORMATION ON ARISS UPDATES: Visit ARISS on Facebook. We can be found at Amateur Radio on the International Space Station (ARISS). To receive our Twitter updates, follow @ARISS_status Next planned event(s): 1. Ste. Genevieve du Bois Catholic Elementary School, Warson Woods, Missouri, The ISS callsign is presently scheduled to be NA1SS The scheduled astronaut is Kjell Lindgren KO5MOS The contact is a go for: Thu , 12Nov2015 16:25 UTC ARISS is an international educational outreach program partnering the volunteer support and leadership from AMSAT and IARU societies around the world with the ISS space agencies partners: NASA, Russian Space Agency, ESA, CNES, JAXA, and CSA. ARISS offers an opportunity for students to experience the excitement of Amateur Radio by talking directly with crewmembers on-board the International Space Station. Teachers, parents and communities see, first hand, how Amateur Radio and crewmembers on ISS can energize youngsters' interest in science, technology, and learning. Further information on the ARISS program visit the ARISS website at ariss.org. Thank you & 73, David - AA4KN --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

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Fm activity on FO29
by jeffory broughton 09 Nov '15

09 Nov '15

A couple weeks ago . fo29 made a pass over canada.I am in michigan and I was barely in the footprint when I clearly heard two guys loading trucks on the upper end of the transponder .it almost had to be coming from canada. jeff broughton

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Frequency chart and satellite information -online-
by Stefan Wagener 09 Nov '15

09 Nov '15

Hi folks, Some of the most comprehensive and very frequently updated sources of amateur radio satellite information can be found here: 1. From Mineo Wakita, JE9PEL http://www.ne.jp/asahi/hamradio/je9pel/satslist.htm 2. From Mike Rupprecht, DK3WN http://www.dk3wn.info/satellites.shtml Bookmarked on my Mac for immediate access :-) Stefan, VE4NSA

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Re: [amsat-bb] FM signal on FO-29
by VK4NBL 09 Nov '15

09 Nov '15

With regards to FM signals on FO-29, we can also here them here in Australia. This is most noticeable when the Sat is travelling South to North. When it gets above Northern Queensland all we can hear is Indonesian fishing boats on the 2m uplink. It does suck the power from the Sat and usually ends some very good QSO's long before LOS. 73 Peter vk4nbl

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FUNcube-1 Mode
by Graham Shirville 08 Nov '15

08 Nov '15

Hi All, Just to confirm that FUNcube-1 was returned to automatic mode during the 2100UTC pass over Europe this evening. The transponder and low power telemetry will now be available when the spacecraft is in eclipse and the high power telemetry only when in sunlight. 73 Graham G3VZV

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Re: [amsat-bb] AO-85 "reset" during pass
by Daniel Estévez 08 Nov '15

08 Nov '15

I'm a bit doubtful on the no 67Hz on input theory. There were several stations trying to hit the satellite, including me. I was using only 5W, so perhaps the satellite won't lock to my 67Hz tone except in good conditions, but the other stations were probably using more power. El 08/11/15 a las 18:19, David G0MRF escribió: > I think that just means there was no 67Hz on the input to start the 1 > minute timer. > > However, there were some mails about testing another mode yesterday, so > the answer may be there. > > 73 > > David > > > -----Original Message----- > From: Daniel Estévez <daniel(a)destevez.net> > To: amsat-bb <amsat-bb(a)amsat.org> > Sent: Sun, 8 Nov 2015 14:37 > Subject: [amsat-bb] AO-85 "reset" during pass > > Hi all, An unusual thing happened during AO-85 last pass over Europe, at > about 14:20 UTC or so. The transponder stopped working and the satellite > went silent for about a minute. Then came the voice announcement in the > lines of "Hi! This is radio amateur satellite Fox 1", and some seconds > later the transponder started working again. I'm sorry that I have no > telemetry recording of the pass to try to see what happened. 73, Dani > M0HXM/EA4GPZ. _______________________________________________ Sent via > AMSAT-BB(a)amsat.org <mailto:AMSAT-BB@amsat.org>. AMSAT-NA makes this open > forum available to all interested persons worldwide without requiring > membership. Opinions expressed are solely those of the author, and do > not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join > now to support the amateur satellite program! Subscription settings: > http://www.amsat.org/mailman/listinfo/amsat-bb >

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Re: [amsat-bb] AO-7
by Eduardo Erlemann 08 Nov '15

08 Nov '15

Hi Drew, thanks for the qso GG66 <> EL88 Not too much noise was necessary, that was relatively easy :) Uploading qso to LoTW in a few minutes. 73 Ed PY2RN GG66 -------------------------------------------- On Sun, 11/8/15, Andrew Glasbrenner <glasbrenner(a)mindspring.com> wrote: Subject: RE: [amsat-bb] AO-7 To: "'Eduardo Erlemann'" <sasb.geo(a)yahoo.com>, "'Gustavo Nicolau'" <bombeiro.gustavo(a)gmail.com> Cc: amsat-bb(a)amsat.org Date: Sunday, November 8, 2015, 5:38 PM Ed, I will look for you at my AOS, please make lots of noise! 73, Drew KO4MA -----Original Message----- From: AMSAT-BB [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Eduardo Erlemann via AMSAT-BB Sent: Sunday, November 08, 2015 2:34 PM To: amsat-bb(a)amsat.org; Gustavo Nicolau Subject: Re: [amsat-bb] AO-7 I will be QRV as well. 73 Ed PY2RN GG66 -------------------------------------------- On Sun, 11/8/15, Gustavo Nicolau <bombeiro.gustavo(a)gmail.com> wrote: Subject: [amsat-bb] AO-7 To: amsat-bb(a)amsat.org Date: Sunday, November 8, 2015, 2:06 PM Hello to all, gud condictions today for NA via AO7. I'm in QRV. 73 de PT9BM. _______________________________________________ Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb _______________________________________________ Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb

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Re: [amsat-bb] AO-7
by Eduardo Erlemann 08 Nov '15

08 Nov '15

I will be QRV as well. 73 Ed PY2RN GG66 -------------------------------------------- On Sun, 11/8/15, Gustavo Nicolau <bombeiro.gustavo(a)gmail.com> wrote: Subject: [amsat-bb] AO-7 To: amsat-bb(a)amsat.org Date: Sunday, November 8, 2015, 2:06 PM Hello to all, gud condictions today for NA via AO7. I'm in QRV. 73 de PT9BM. _______________________________________________ Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb

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Video: ISS reception with Dearborn Public Schools
by John Brier 08 Nov '15

08 Nov '15

https://www.youtube.com/watch?v=zixq5yyWH-k My goal with this one was to get it under 10 minutes since even that is long for the Internet. So it doesn't have much explanation of the setup like some of my other longer videos. I'm thinking of making a video just describing all the parts and how they work and referencing that at the end of each reception video and then linking it in the description and within the video. 73, John, KG4AKV

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