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{ "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/D5RNXQ7YYLBRCG3QCIDIQ77RMKIM4PLE/", "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/", "message_id": "[email protected]", "message_id_hash": "D5RNXQ7YYLBRCG3QCIDIQ77RMKIM4PLE", "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/D5RNXQ7YYLBRCG3QCIDIQ77RMKIM4PLE/", "sender": { "address": "twdeckard (a) earthlink.net", "mailman_id": "7ce245bfe53e49ee99247feaa165c0b9", "emails": "https://mailman.amsat.org/hyperkitty/api/sender/7ce245bfe53e49ee99247feaa165c0b9/emails/" }, "sender_name": "Todd W. Deckard", "subject": "Re: [amsat-bb] AMSAT-BB Digest, Vol 10, Issue 346", "date": "2015-11-09T02:28:05Z", "parent": null, "children": [], "votes": { "likes": 0, "dislikes": 0, "status": "neutral" }, "content": "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. \n\nSent from my iPhone\n\n> On Nov 8, 2015, at 6:46 PM, [email protected] wrote:\n> \n> Send AMSAT-BB mailing list submissions to\n> [email protected]\n> \n> To subscribe or unsubscribe via the World Wide Web, visit\n> http://www.amsat.org/mailman/listinfo/amsat-bb\n> or, via email, send a message with subject or body 'help' to\n> [email protected]\n> \n> You can reach the person managing the list at\n> [email protected]\n> \n> When replying, please edit your Subject line so it is more specific\n> than \"Re: Contents of AMSAT-BB digest...\"\n> \n> \n> Today's Topics:\n> \n> 1. Re: FM signal on FO-29? (Zach Leffke)\n> 2. Re: FM signal on FO-29? (Burns Fisher)\n> 3. Re: FM signal on FO-29? (Robert Bruninga)\n> 4. Re: FM signal on FO-29? (Robert Bruninga)\n> 5. Re: FM signal on FO-29? (Zach Leffke)\n> 6. Re: FM signal on FO-29? (Hector W5CBF/CO6CBF)\n> 7. Re: FM signal on FO-29? (Zach Leffke)\n> 8. Re: FM signal on FO-29? (Zach Leffke)\n> 9. Re: FM signal on FO-29 (VK4NBL)\n> 10. Re: Frequency chart and satellite information -online- (Ted)\n> 11. Fm activity on FO29 (jeffory broughton)\n> \n> \n> ----------------------------------------------------------------------\n> \n> Message: 1\n> Date: Sun, 8 Nov 2015 17:54:28 -0500\n> From: Zach Leffke <[email protected]>\n> To: [email protected]\n> Subject: Re: [amsat-bb] FM signal on FO-29?\n> Message-ID: <[email protected]>\n> Content-Type: text/plain; charset=windows-1252; format=flowed\n> \n> Send AMSAT-BB mailing list submissions to\n> [email protected]\n> \n> To subscribe or unsubscribe via the World Wide Web, visit\n> http://www.amsat.org/mailman/listinfo/amsat-bb\n> or, via email, send a message with subject or body 'help' to\n> [email protected]\n> \n> You can reach the person managing the list at\n> [email protected]\n> \n> When replying, please edit your Subject line so it is more specific\n> than \"Re: Contents of AMSAT-BB digest...\"\n> \n> \n> Today's Topics:\n> \n> 1. Re: FM signal on FO-29? (Zach Leffke)\n> 2. Re: FM signal on FO-29? (Burns Fisher)\n> 3. Re: FM signal on FO-29? (Robert Bruninga)\n> 4. Re: FM signal on FO-29? (Robert Bruninga)\n> 5. Re: FM signal on FO-29? (Zach Leffke)\n> 6. Re: FM signal on FO-29? (Hector W5CBF/CO6CBF)\n> 7. Re: FM signal on FO-29? (Zach Leffke)\n> 8. Re: FM signal on FO-29? (Zach Leffke)\n> 9. Re: FM signal on FO-29 (VK4NBL)\n> 10. Re: Frequency chart and satellite information -online- (Ted)\n> 11. Fm activity on FO29 (jeffory broughton)\n> \n> \n> ----------------------------------------------------------------------\n> \n> Message: 1\n> Date: Sun, 8 Nov 2015 17:54:28 -0500\n> From: Zach Leffke <[email protected]>\n> To: [email protected]\n> Subject: Re: [amsat-bb] FM signal on FO-29?\n> Message-ID: <[email protected]>\n> Content-Type: text/plain; charset=windows-1252; format=flowed\n> \n> well.. when I say students, I meant graduate students at VT that \n> happened to be in the lab when I was doing the experiment. They work \n> with me and Bob, so a few crude words here and there aren't uncommon to \n> them.\n> \n> But good point, probably not the best thing for a public demo if your \n> audience is a bit younger.\n> \n> Actually, I've seen so much FM activity (basically every time I've \n> monitored FO-29 since we first came online in late september) that I've \n> been toying with the idea of trying to locate where the source emitters \n> actually are located based on doppler shift data. We know the doppler \n> between the receiving ground station and FO-29, so we can back that \n> out. We know the transponder mapping, so we can work through that to \n> determine what the center frequency is as the signal enters the \n> transponder uplink receiver. What we don't know is the uplink doppler, \n> because we don't know where the emitter is and we don't know what exact \n> center frequency they are on (but I bet you its in 5kHz steps, maybe \n> 2.5kHz). So we have two unknowns. I'm betting there's a way to work \n> through it though, and with enough observations and by watching the rate \n> of change of the doppler, I bet there's a way to make an educated guess \n> on what their center freq and location are.\n> \n> Or if someone listening knows Spanish and/or Portugese, maybe we could \n> get lucky and hear what cross streets the taxi is going to (if it is in \n> fact a taxi).\n> \n> -Zach, KJ4QLP\n> \n>> On 11/08/2015 05:30 PM, Clayton W5PFG wrote:\n>> I wouldn't recommend playing the FM audio heard via FO-29 to a group \n>> of children. Normally it's not English. It's most likely NOT a \n>> religious broadcast based on their choice of crude words.\n>> \n>> 73\n>> Clayton\n>> W5PFG\n>> \n>>> On 11/8/2015 16:13, Zach Leffke wrote:\n>>> So yes, in the last couple weeks I've seen a LOT of FM activity on\n>>> FO-29. And based on my experience with Friday's pass, which was\n>>> ascending, I'm leading towards the Central/South America QRM theory.\n>>> Lots of strong FM activity as the pass started and the satellite was\n>>> over the lower latitudes, but as FO-29 ascended over higher latitudes\n>>> towards the north pole, the FM activity died down.\n>>> \n>>> -Zach, KJ4QLP\n>> _______________________________________________\n>> Sent via [email protected]. AMSAT-NA makes this open forum available\n>> to all interested persons worldwide without requiring membership. \n>> Opinions expressed\n>> are solely those of the author, and do not reflect the official views \n>> of AMSAT-NA.\n>> Not an AMSAT-NA member? Join now to support the amateur satellite \n>> program!\n>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb\n> \n> \n> \n> ------------------------------\n> \n> Message: 2\n> Date: Sun, 8 Nov 2015 18:04:49 -0500\n> From: Burns Fisher <[email protected]>\n> To: Paul Stoetzer <[email protected]>\n> Cc: Clayton W5PFG <[email protected]>, \"[email protected]\"\n> <[email protected]>\n> Subject: Re: [amsat-bb] FM signal on FO-29?\n> Message-ID:\n> <CABX7KxWCRhJ+3093GEruVQcBgLhpHhQYqGR9bLmAgTC+4hy3QQ@mail.gmail.com>\n> Content-Type: text/plain; charset=UTF-8\n> \n> Fun and interesting! AO85 and AO73 have been coinciding frequently of\n> late, but they are not compatible.\n> \n>> On Sun, Nov 8, 2015 at 5:33 PM, Paul Stoetzer <[email protected]> wrote:\n>> Speaking of FM signals on FO-29, you'll be able to hear the AO-85\n>> transponder through FO-29 when their paths cross as well. I wonder if\n>> you could get a high enough SNR to decode the DUV...\n>> \n>> 73,\n>> \n>> Paul, N8HM\n>> \n>>> On Sun, Nov 8, 2015 at 5:30 PM, Clayton W5PFG <[email protected]> wrote:\n>>> I wouldn't recommend playing the FM audio heard via FO-29 to a group of\n>>> children. Normally it's not English. It's most likely NOT a religious\n>>> broadcast based on their choice of crude words.\n>>> \n>>> 73\n>>> Clayton\n>>> W5PFG\n>>> \n>>>> On 11/8/2015 16:13, Zach Leffke wrote:\n>>>> \n>>>> So yes, in the last couple weeks I've seen a LOT of FM activity on\n>>>> FO-29. And based on my experience with Friday's pass, which was\n>>>> ascending, I'm leading towards the Central/South America QRM theory.\n>>>> Lots of strong FM activity as the pass started and the satellite was\n>>>> over the lower latitudes, but as FO-29 ascended over higher latitudes\n>>>> towards the north pole, the FM activity died down.\n>>>> \n>>>> -Zach, KJ4QLP\n>>> \n>>> _______________________________________________\n>>> Sent via [email protected]. AMSAT-NA makes this open forum available\n>>> to all interested persons worldwide without requiring membership. Opinions\n>>> expressed\n>>> are solely those of the author, and do not reflect the official views of\n>>> AMSAT-NA.\n>>> Not an AMSAT-NA member? Join now to support the amateur satellite program!\n>>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb\n>> _______________________________________________\n>> Sent via [email protected]. AMSAT-NA makes this open forum available\n>> to all interested persons worldwide without requiring membership. Opinions expressed\n>> are solely those of the author, and do not reflect the official views of AMSAT-NA.\n>> Not an AMSAT-NA member? Join now to support the amateur satellite program!\n>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb\n> \n> \n> ------------------------------\n> \n> Message: 3\n> Date: Sun, 8 Nov 2015 18:10:48 -0500\n> From: Robert Bruninga <[email protected]>\n> To: Zach Leffke <[email protected]>\n> Cc: amsat bb <[email protected]>\n> Subject: Re: [amsat-bb] FM signal on FO-29?\n> Message-ID:\n> <CALdCfNK9ctph66fy-=+Cd4k6oPxYM4rUVVUNwbCduPtWdzLmKA@mail.gmail.com>\n> Content-Type: text/plain; charset=UTF-8\n> \n> Zach\n> \n>> On Sun, Nov 8, 2015 at 5:54 PM, Zach Leffke <[email protected]> wrote:\n>> \n>> well.. when I say students, I meant graduate students at VT that happened\n>> to be in the lab when I was doing the experiment. They work with me and\n>> Bob, so a few crude words here and there aren't uncommon to them.\n>> \n>> But good point, probably not the best thing for a public demo if your\n>> audience is a bit younger.\n>> \n>> Actually, I've seen so much FM activity (basically every time I've\n>> monitored FO-29 since we first came online in late september) that I've\n>> been toying with the idea of trying to locate where the source emitters\n>> actually are located based on doppler shift data. We know the doppler\n>> between the receiving ground station and FO-29, so we can back that out.\n>> We know the transponder mapping, so we can work through that to determine\n>> what the center frequency is as the signal enters the transponder uplink\n>> receiver. What we don't know is the uplink doppler, because we don't know\n>> where the emitter is and we don't know what exact center frequency they are\n>> on (but I bet you its in 5kHz steps, maybe 2.5kHz). So we have two\n>> unknowns. I'm betting there's a way to work through it though, and with\n>> enough observations and by watching the rate of change of the doppler, I\n>> bet there's a way to make an educated guess on what their center freq and\n>> location are.\n>> \n>> Or if someone listening knows Spanish and/or Portugese, maybe we could get\n>> lucky and hear what cross streets the taxi is going to (if it is in fact a\n>> taxi).\n>> \n>> -Zach, KJ4QLP\n>> \n>>> On 11/08/2015 05:30 PM, Clayton W5PFG wrote:\n>>> \n>>> I wouldn't recommend playing the FM audio heard via FO-29 to a group of\n>>> children. Normally it's not English. It's most likely NOT a religious\n>>> broadcast based on their choice of crude words.\n>>> \n>>> 73\n>>> Clayton\n>>> W5PFG\n>>> \n>>>> On 11/8/2015 16:13, Zach Leffke wrote:\n>>>> \n>>>> So yes, in the last couple weeks I've seen a LOT of FM activity on\n>>>> FO-29. And based on my experience with Friday's pass, which was\n>>>> ascending, I'm leading towards the Central/South America QRM theory.\n>>>> Lots of strong FM activity as the pass started and the satellite was\n>>>> over the lower latitudes, but as FO-29 ascended over higher latitudes\n>>>> towards the north pole, the FM activity died down.\n>>>> \n>>>> -Zach, KJ4QLP\n>>>> \n>>> _______________________________________________\n>>> Sent via [email protected]. AMSAT-NA makes this open forum available\n>>> to all interested persons worldwide without requiring membership.\n>>> Opinions expressed\n>>> are solely those of the author, and do not reflect the official views of\n>>> AMSAT-NA.\n>>> Not an AMSAT-NA member? Join now to support the amateur satellite program!\n>>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb\n>>> \n>> \n>> _______________________________________________\n>> Sent via [email protected]. AMSAT-NA makes this open forum available\n>> to all interested persons worldwide without requiring membership. Opinions\n>> expressed\n>> are solely those of the author, and do not reflect the official views of\n>> AMSAT-NA.\n>> Not an AMSAT-NA member? Join now to support the amateur satellite program!\n>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb\n>> \n> \n> \n> ------------------------------\n> \n> Message: 4\n> Date: Sun, 8 Nov 2015 18:12:35 -0500\n> From: Robert Bruninga <[email protected]>\n> To: Zach Leffke <[email protected]>\n> Cc: amsat bb <[email protected]>\n> Subject: Re: [amsat-bb] FM signal on FO-29?\n> Message-ID:\n> <CALdCfN+cyT1Cj_KYyeXisB_Hds5runD6fOoRfkLuohdfSC+u6Q@mail.gmail.com>\n> Content-Type: text/plain; charset=UTF-8\n> \n> Zach\n> You dont need to know the senders exact freq, just a plot of his freq\n> during the pass will form an \"S\" curve and once you have enough of the \"S\",\n> you can know his center freq, and hence his closest point of approach.\n> That gives a line of bearing. Anothe pass gives another one, and so on...\n> \n> bob\n> \n>> On Sun, Nov 8, 2015 at 5:54 PM, Zach Leffke <[email protected]> wrote:\n>> \n>> well.. when I say students, I meant graduate students at VT that happened\n>> to be in the lab when I was doing the experiment. They work with me and\n>> Bob, so a few crude words here and there aren't uncommon to them.\n>> \n>> But good point, probably not the best thing for a public demo if your\n>> audience is a bit younger.\n>> \n>> Actually, I've seen so much FM activity (basically every time I've\n>> monitored FO-29 since we first came online in late september) that I've\n>> been toying with the idea of trying to locate where the source emitters\n>> actually are located based on doppler shift data. We know the doppler\n>> between the receiving ground station and FO-29, so we can back that out.\n>> We know the transponder mapping, so we can work through that to determine\n>> what the center frequency is as the signal enters the transponder uplink\n>> receiver. What we don't know is the uplink doppler, because we don't know\n>> where the emitter is and we don't know what exact center frequency they are\n>> on (but I bet you its in 5kHz steps, maybe 2.5kHz). So we have two\n>> unknowns. I'm betting there's a way to work through it though, and with\n>> enough observations and by watching the rate of change of the doppler, I\n>> bet there's a way to make an educated guess on what their center freq and\n>> location are.\n>> \n>> Or if someone listening knows Spanish and/or Portugese, maybe we could get\n>> lucky and hear what cross streets the taxi is going to (if it is in fact a\n>> taxi).\n>> \n>> -Zach, KJ4QLP\n>> \n>>> On 11/08/2015 05:30 PM, Clayton W5PFG wrote:\n>>> \n>>> I wouldn't recommend playing the FM audio heard via FO-29 to a group of\n>>> children. Normally it's not English. It's most likely NOT a religious\n>>> broadcast based on their choice of crude words.\n>>> \n>>> 73\n>>> Clayton\n>>> W5PFG\n>>> \n>>>> On 11/8/2015 16:13, Zach Leffke wrote:\n>>>> \n>>>> So yes, in the last couple weeks I've seen a LOT of FM activity on\n>>>> FO-29. And based on my experience with Friday's pass, which was\n>>>> ascending, I'm leading towards the Central/South America QRM theory.\n>>>> Lots of strong FM activity as the pass started and the satellite was\n>>>> over the lower latitudes, but as FO-29 ascended over higher latitudes\n>>>> towards the north pole, the FM activity died down.\n>>>> \n>>>> -Zach, KJ4QLP\n>>>> \n>>> _______________________________________________\n>>> Sent via [email protected]. AMSAT-NA makes this open forum available\n>>> to all interested persons worldwide without requiring membership.\n>>> Opinions expressed\n>>> are solely those of the author, and do not reflect the official views of\n>>> AMSAT-NA.\n>>> Not an AMSAT-NA member? Join now to support the amateur satellite program!\n>>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb\n>>> \n>> \n>> _______________________________________________\n>> Sent via [email protected]. AMSAT-NA makes this open forum available\n>> to all interested persons worldwide without requiring membership. Opinions\n>> expressed\n>> are solely those of the author, and do not reflect the official views of\n>> AMSAT-NA.\n>> Not an AMSAT-NA member? Join now to support the amateur satellite program!\n>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb\n>> \n> \n> \n> ------------------------------\n> \n> Message: 5\n> Date: Sun, 8 Nov 2015 18:30:33 -0500\n> From: Zach Leffke <[email protected]>\n> To: [email protected]\n> Subject: Re: [amsat-bb] FM signal on FO-29?\n> Message-ID: <[email protected]>\n> Content-Type: text/plain; charset=windows-1252; format=flowed\n> \n> Sweet, second cross link signal to look into! I missed that, you got \n> the gears turning.......\n> \n> So lets see.... 145.900MHz to 146.000MHz for FO-29 passband.\n> \n> A quick look through JE9PEL satlist reveals these downlinks:\n> \n> AO73 tlm bcn, 145.935 MHz\n> AO73 transponder, 145.970-145.950 MHz\n> AO85, 145.978 MHz\n> First-MOVE cubesat (NORAD ID 39439), 145.970MHz\n> DUCHIFAT, 145.980 MHz\n> QB50p1/FUNcube3 (EO-79) transponder, 145.970-145.945 MHz\n> VELOX-I, 145.980 MHz\n> UKube-1/FUNcube-2, 145.915 MHz\n> DeorbitSail, 145.975 MHz\n> CAS-3E (XW-2E) transponder, 145.935-145.915 MHz\n> CAS-3F (XW-2F) transponder, 146.000-146.980 MHz\n> Fox-1B, 145.960 MHz\n> Fox-1C, 145.920 MHz\n> \n> I guess its not that surprising when FO-29 has half of the 2m Satellite \n> Service allocation for its uplink. Next thing to do is figure out which \n> ones are the most likely to be successful based on power levels, \n> modulation schemes, transmission rate, which ones are using Forward \n> Error Correction, etc. And then look at the orbits for possible chain \n> events.\n> \n> fun stuff!\n> \n> Does anyone know the uplink receiver sensitivity and antenna gain/design \n> on FO-29?\n> \n> -Zach, KJ4QLP\n> \n> \n>> On 11/08/2015 05:33 PM, Paul Stoetzer wrote:\n>> Speaking of FM signals on FO-29, you'll be able to hear the AO-85\n>> transponder through FO-29 when their paths cross as well. I wonder if\n>> you could get a high enough SNR to decode the DUV...\n>> \n>> 73,\n>> \n>> Paul, N8HM\n>> \n>>> On Sun, Nov 8, 2015 at 5:30 PM, Clayton W5PFG <[email protected]> wrote:\n>>> I wouldn't recommend playing the FM audio heard via FO-29 to a group of\n>>> children. Normally it's not English. It's most likely NOT a religious\n>>> broadcast based on their choice of crude words.\n>>> \n>>> 73\n>>> Clayton\n>>> W5PFG\n>>> \n>>>> On 11/8/2015 16:13, Zach Leffke wrote:\n>>>> So yes, in the last couple weeks I've seen a LOT of FM activity on\n>>>> FO-29. And based on my experience with Friday's pass, which was\n>>>> ascending, I'm leading towards the Central/South America QRM theory.\n>>>> Lots of strong FM activity as the pass started and the satellite was\n>>>> over the lower latitudes, but as FO-29 ascended over higher latitudes\n>>>> towards the north pole, the FM activity died down.\n>>>> \n>>>> -Zach, KJ4QLP\n>>> _______________________________________________\n>>> Sent via [email protected]. AMSAT-NA makes this open forum available\n>>> to all interested persons worldwide without requiring membership. Opinions\n>>> expressed\n>>> are solely those of the author, and do not reflect the official views of\n>>> AMSAT-NA.\n>>> Not an AMSAT-NA member? Join now to support the amateur satellite program!\n>>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb\n>> _______________________________________________\n>> Sent via [email protected]. AMSAT-NA makes this open forum available\n>> to all interested persons worldwide without requiring membership. Opinions expressed\n>> are solely those of the author, and do not reflect the official views of AMSAT-NA.\n>> Not an AMSAT-NA member? Join now to support the amateur satellite program!\n>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb\n> \n> \n> \n> ------------------------------\n> \n> Message: 6\n> Date: Sun, 8 Nov 2015 17:34:43 -0600\n> From: \"Hector W5CBF/CO6CBF\" <[email protected]>\n> To: \"'Zach Leffke'\" <[email protected]>, <[email protected]>\n> Subject: Re: [amsat-bb] FM signal on FO-29?\n> Message-ID: <[email protected]>\n> Content-Type: text/plain; charset=\"us-ascii\"\n> \n> Hi Zach and group\n> \n> I think, the main problem is they are not always the same stations. I have\n> heard several different stations in terrestrial QSOs QRMing FO-29; majority\n> of them speaking Spanish and without any kind of ID. I have not heard them\n> recently, though.\n> \n> 73!\n> \n> Hector, CO6CBF/W5CBF\n> \n> -----Mensaje original-----\n> De: AMSAT-BB [mailto:[email protected]] En nombre de Zach Leffke\n> Enviado el: Sunday, November 08, 2015 4:54 PM\n> Para: [email protected]\n> Asunto: Re: [amsat-bb] FM signal on FO-29?\n> \n> well.. when I say students, I meant graduate students at VT that happened to\n> be in the lab when I was doing the experiment. They work with me and Bob,\n> so a few crude words here and there aren't uncommon to them.\n> \n> But good point, probably not the best thing for a public demo if your\n> audience is a bit younger.\n> \n> Actually, I've seen so much FM activity (basically every time I've monitored\n> FO-29 since we first came online in late september) that I've been toying\n> with the idea of trying to locate where the source emitters actually are\n> located based on doppler shift data. We know the doppler between the\n> receiving ground station and FO-29, so we can back that out. We know the\n> transponder mapping, so we can work through that to determine what the\n> center frequency is as the signal enters the transponder uplink receiver.\n> What we don't know is the uplink doppler, because we don't know where the\n> emitter is and we don't know what exact center frequency they are on (but I\n> bet you its in 5kHz steps, maybe 2.5kHz). So we have two unknowns. I'm\n> betting there's a way to work through it though, and with enough\n> observations and by watching the rate of change of the doppler, I bet\n> there's a way to make an educated guess on what their center freq and\n> location are.\n> \n> Or if someone listening knows Spanish and/or Portugese, maybe we could get\n> lucky and hear what cross streets the taxi is going to (if it is in fact a\n> taxi).\n> \n> -Zach, KJ4QLP\n> \n>> On 11/08/2015 05:30 PM, Clayton W5PFG wrote:\n>> I wouldn't recommend playing the FM audio heard via FO-29 to a group \n>> of children. Normally it's not English. It's most likely NOT a \n>> religious broadcast based on their choice of crude words.\n>> \n>> 73\n>> Clayton\n>> W5PFG\n>> \n>>> On 11/8/2015 16:13, Zach Leffke wrote:\n>>> So yes, in the last couple weeks I've seen a LOT of FM activity on \n>>> FO-29. And based on my experience with Friday's pass, which was \n>>> ascending, I'm leading towards the Central/South America QRM theory.\n>>> Lots of strong FM activity as the pass started and the satellite was \n>>> over the lower latitudes, but as FO-29 ascended over higher latitudes \n>>> towards the north pole, the FM activity died down.\n>>> \n>>> -Zach, KJ4QLP\n>> _______________________________________________\n>> Sent via [email protected]. AMSAT-NA makes this open forum available \n>> to all interested persons worldwide without requiring membership.\n>> Opinions expressed\n>> are solely those of the author, and do not reflect the official views \n>> of AMSAT-NA.\n>> Not an AMSAT-NA member? Join now to support the amateur satellite \n>> program!\n>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb\n> \n> _______________________________________________\n> Sent via [email protected]. AMSAT-NA makes this open forum available to all\n> interested persons worldwide without requiring membership. Opinions\n> expressed are solely those of the author, and do not reflect the official\n> views of AMSAT-NA.\n> Not an AMSAT-NA member? Join now to support the amateur satellite program!\n> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb\n> \n> \n> \n> ------------------------------\n> \n> Message: 7\n> Date: Sun, 8 Nov 2015 18:40:48 -0500\n> From: Zach Leffke <[email protected]>\n> To: Hector W5CBF/CO6CBF <[email protected]>, [email protected]\n> Subject: Re: [amsat-bb] FM signal on FO-29?\n> Message-ID: <[email protected]>\n> Content-Type: text/plain; charset=windows-1252; format=flowed\n> \n> That makes sense Hector. I've seen the FM activity kind of all over the \n> transponder. More so than I would expect if it was the same transmitter \n> each time on the same frequency and the different pass geometries \n> causing a bit of swing due to doppler.\n> \n> \n> -Zach, KJ4QLP\n> \n>> On 11/08/2015 06:34 PM, Hector W5CBF/CO6CBF wrote:\n>> Hi Zach and group\n>> \n>> I think, the main problem is they are not always the same stations. I have\n>> heard several different stations in terrestrial QSOs QRMing FO-29; majority\n>> of them speaking Spanish and without any kind of ID. I have not heard them\n>> recently, though.\n>> \n>> 73!\n>> \n>> Hector, CO6CBF/W5CBF\n>> \n>> -----Mensaje original-----\n>> De: AMSAT-BB [mailto:[email protected]] En nombre de Zach Leffke\n>> Enviado el: Sunday, November 08, 2015 4:54 PM\n>> Para: [email protected]\n>> Asunto: Re: [amsat-bb] FM signal on FO-29?\n>> \n>> well.. when I say students, I meant graduate students at VT that happened to\n>> be in the lab when I was doing the experiment. They work with me and Bob,\n>> so a few crude words here and there aren't uncommon to them.\n>> \n>> But good point, probably not the best thing for a public demo if your\n>> audience is a bit younger.\n>> \n>> Actually, I've seen so much FM activity (basically every time I've monitored\n>> FO-29 since we first came online in late september) that I've been toying\n>> with the idea of trying to locate where the source emitters actually are\n>> located based on doppler shift data. We know the doppler between the\n>> receiving ground station and FO-29, so we can back that out. We know the\n>> transponder mapping, so we can work through that to determine what the\n>> center frequency is as the signal enters the transponder uplink receiver.\n>> What we don't know is the uplink doppler, because we don't know where the\n>> emitter is and we don't know what exact center frequency they are on (but I\n>> bet you its in 5kHz steps, maybe 2.5kHz). So we have two unknowns. I'm\n>> betting there's a way to work through it though, and with enough\n>> observations and by watching the rate of change of the doppler, I bet\n>> there's a way to make an educated guess on what their center freq and\n>> location are.\n>> \n>> Or if someone listening knows Spanish and/or Portugese, maybe we could get\n>> lucky and hear what cross streets the taxi is going to (if it is in fact a\n>> taxi).\n>> \n>> -Zach, KJ4QLP\n>> \n>>> On 11/08/2015 05:30 PM, Clayton W5PFG wrote:\n>>> I wouldn't recommend playing the FM audio heard via FO-29 to a group\n>>> of children. Normally it's not English. It's most likely NOT a\n>>> religious broadcast based on their choice of crude words.\n>>> \n>>> 73\n>>> Clayton\n>>> W5PFG\n>>> \n>>>> On 11/8/2015 16:13, Zach Leffke wrote:\n>>>> So yes, in the last couple weeks I've seen a LOT of FM activity on\n>>>> FO-29. And based on my experience with Friday's pass, which was\n>>>> ascending, I'm leading towards the Central/South America QRM theory.\n>>>> Lots of strong FM activity as the pass started and the satellite was\n>>>> over the lower latitudes, but as FO-29 ascended over higher latitudes\n>>>> towards the north pole, the FM activity died down.\n>>>> \n>>>> -Zach, KJ4QLP\n>>> _______________________________________________\n>>> Sent via [email protected]. AMSAT-NA makes this open forum available\n>>> to all interested persons worldwide without requiring membership.\n>>> Opinions expressed\n>>> are solely those of the author, and do not reflect the official views\n>>> of AMSAT-NA.\n>>> Not an AMSAT-NA member? Join now to support the amateur satellite\n>>> program!\n>>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb\n>> _______________________________________________\n>> Sent via [email protected]. AMSAT-NA makes this open forum available to all\n>> interested persons worldwide without requiring membership. Opinions\n>> expressed are solely those of the author, and do not reflect the official\n>> views of AMSAT-NA.\n>> Not an AMSAT-NA member? Join now to support the amateur satellite program!\n>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb\n>> \n> \n> \n> \n> ------------------------------\n> \n> Message: 8\n> Date: Sun, 8 Nov 2015 18:55:00 -0500\n> From: Zach Leffke <[email protected]>\n> To: Robert Bruninga <[email protected]>\n> Cc: amsat bb <[email protected]>\n> Subject: Re: [amsat-bb] FM signal on FO-29?\n> Message-ID: <[email protected]>\n> Content-Type: text/plain; charset=utf-8; format=flowed\n> \n> Good point Bob. I haven't fully worked through the problem yet, but \n> thats pretty much right in line with what I'm thinking. Thats what I \n> meant by saying watching the 'rate of change of doppler.' When the \n> slope of the doppler s-curve is at a maximum, that should be the point \n> of closest approach.\n> \n> Actually, that brings up a question. Do you know what type of equation \n> would fit the doppler S-Curve profile? something that could be used to \n> generate a regression equation from a few doppler observations?\n> \n> -Zach, KJ4QLP\n> \n> \n>> On 11/08/2015 06:12 PM, Robert Bruninga wrote:\n>> Zach\n>> You dont need to know the senders exact freq, just a plot of his freq \n>> during the pass will form an \"S\" curve and once you have enough of the \n>> \"S\", you can know his center freq, and hence his closest point of \n>> approach. That gives a line of bearing. Anothe pass gives another \n>> one, and so on...\n>> \n>> bob\n>> \n>> On Sun, Nov 8, 2015 at 5:54 PM, Zach Leffke <[email protected] \n>> <mailto:[email protected]>> wrote:\n>> \n>> well.. when I say students, I meant graduate students at VT that\n>> happened to be in the lab when I was doing the experiment. They\n>> work with me and Bob, so a few crude words here and there aren't\n>> uncommon to them.\n>> \n>> But good point, probably not the best thing for a public demo if\n>> your audience is a bit younger.\n>> \n>> Actually, I've seen so much FM activity (basically every time I've\n>> monitored FO-29 since we first came online in late september) that\n>> I've been toying with the idea of trying to locate where the\n>> source emitters actually are located based on doppler shift data. \n>> We know the doppler between the receiving ground station and\n>> FO-29, so we can back that out. We know the transponder mapping,\n>> so we can work through that to determine what the center frequency\n>> is as the signal enters the transponder uplink receiver. What we\n>> don't know is the uplink doppler, because we don't know where the\n>> emitter is and we don't know what exact center frequency they are\n>> on (but I bet you its in 5kHz steps, maybe 2.5kHz). So we have\n>> two unknowns. I'm betting there's a way to work through it though,\n>> and with enough observations and by watching the rate of change of\n>> the doppler, I bet there's a way to make an educated guess on what\n>> their center freq and location are.\n>> \n>> Or if someone listening knows Spanish and/or Portugese, maybe we\n>> could get lucky and hear what cross streets the taxi is going to\n>> (if it is in fact a taxi).\n>> \n>> -Zach, KJ4QLP\n>> \n>> On 11/08/2015 05:30 PM, Clayton W5PFG wrote:\n>> \n>> I wouldn't recommend playing the FM audio heard via FO-29 to a\n>> group of children. Normally it's not English. It's most\n>> likely NOT a religious broadcast based on their choice of\n>> crude words.\n>> \n>> 73\n>> Clayton\n>> W5PFG\n>> \n>> On 11/8/2015 16:13, Zach Leffke wrote:\n>> \n>> So yes, in the last couple weeks I've seen a LOT of FM\n>> activity on\n>> FO-29. And based on my experience with Friday's pass,\n>> which was\n>> ascending, I'm leading towards the Central/South America\n>> QRM theory.\n>> Lots of strong FM activity as the pass started and the\n>> satellite was\n>> over the lower latitudes, but as FO-29 ascended over\n>> higher latitudes\n>> towards the north pole, the FM activity died down.\n>> \n>> -Zach, KJ4QLP\n>> \n>> _______________________________________________\n>> Sent via [email protected] <mailto:[email protected]>.\n>> AMSAT-NA makes this open forum available\n>> to all interested persons worldwide without requiring\n>> membership. Opinions expressed\n>> are solely those of the author, and do not reflect the\n>> official views of AMSAT-NA.\n>> Not an AMSAT-NA member? Join now to support the amateur\n>> satellite program!\n>> Subscription settings:\n>> http://www.amsat.org/mailman/listinfo/amsat-bb\n>> \n>> \n>> _______________________________________________\n>> Sent via [email protected] <mailto:[email protected]>. AMSAT-NA\n>> makes this open forum available\n>> to all interested persons worldwide without requiring membership.\n>> Opinions expressed\n>> are solely those of the author, and do not reflect the official\n>> views of AMSAT-NA.\n>> Not an AMSAT-NA member? Join now to support the amateur satellite\n>> program!\n>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb\n>> \n>> \n> \n> \n> \n> ------------------------------\n> \n> Message: 9\n> Date: Mon, 9 Nov 2015 10:21:57 +1000\n> From: VK4NBL <[email protected]>\n> To: <[email protected]>\n> Subject: Re: [amsat-bb] FM signal on FO-29\n> Message-ID: <[email protected]>\n> Content-Type: text/plain; format=flowed; charset=\"iso-8859-1\";\n> reply-type=original\n> \n> \n> With regards to FM signals on FO-29, we can also here them here in \n> Australia.\n> This is most noticeable when the Sat is travelling South to North.\n> When it gets above Northern Queensland all we can hear is Indonesian fishing \n> boats on the 2m uplink.\n> It does suck the power from the Sat and usually ends some very good QSO's \n> long before LOS.\n> \n> 73\n> Peter\n> vk4nbl \n> \n> \n> \n> ------------------------------\n> \n> Message: 10\n> Date: Sun, 8 Nov 2015 16:30:59 -0800\n> From: \"Ted\" <[email protected]>\n> To: \"'Stefan Wagener'\" <[email protected]>, \"'AMSAT BB'\"\n> <[email protected]>\n> Subject: Re: [amsat-bb] Frequency chart and satellite information\n> -online-\n> Message-ID: <[email protected]>\n> Content-Type: text/plain; charset=\"us-ascii\"\n> \n> Good stuff, Stefan...tnx!\n> 73, K7trk\n> \n> -----Original Message-----\n> From: AMSAT-BB [mailto:[email protected]] On Behalf Of Stefan\n> Wagener\n> Sent: Sunday, November 08, 2015 6:12 AM\n> To: AMSAT BB\n> Subject: [amsat-bb] Frequency chart and satellite information -online-\n> \n> Hi folks,\n> \n> Some of the most comprehensive and very frequently updated sources of\n> amateur radio satellite information can be found here:\n> \n> 1. From Mineo Wakita, JE9PEL\n> \n> http://www.ne.jp/asahi/hamradio/je9pel/satslist.htm\n> \n> 2. From Mike Rupprecht, DK3WN\n> \n> http://www.dk3wn.info/satellites.shtml\n> \n> Bookmarked on my Mac for immediate access :-)\n> \n> Stefan, VE4NSA\n> _______________________________________________\n> Sent via [email protected]. AMSAT-NA makes this open forum available to all\n> interested persons worldwide without requiring membership. Opinions\n> expressed are solely those of the author, and do not reflect the official\n> views of AMSAT-NA.\n> Not an AMSAT-NA member? Join now to support the amateur satellite program!\n> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb\n> \n> \n> \n> ------------------------------\n> \n> Message: 11\n> Date: Sun, 8 Nov 2015 19:46:38 -0500\n> From: jeffory broughton <[email protected]>\n> To: [email protected]\n> Subject: [amsat-bb] Fm activity on FO29\n> Message-ID:\n> <CACm2je12MnYrso645LUPCBvn58vCNsjingQA1DZpy+rgq5KXFg@mail.gmail.com>\n> Content-Type: text/plain; charset=UTF-8\n> \n> A couple weeks ago . fo29 made a pass over canada.I am in michigan and I\n> was barely in the footprint when I clearly heard two guys loading trucks on\n> the upper end of the transponder .it almost had to be coming from canada.\n> \n> jeff broughton\n> \n> \n> ------------------------------\n> \n> Subject: Digest Footer\n> \n> _______________________________________________\n> Sent via [email protected].\n> AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed\n> are solely those of the author, and do not reflect the official views of AMSAT-NA.\n> Not an AMSAT member? Join now to support the amateur satellite program!\n> http://www.amsat.org/mailman/listinfo/amsat-bb\n> \n> ------------------------------\n> \n> End of AMSAT-BB Digest, Vol 10, Issue 346\n> *****************************************\n", "attachments": [] }