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

Re: [amsat-bb] Fox, "Easy Sats" - segway to PSAT PSK31?
by Robert Bruninga 09 Jul '15

09 Jul '15

Sig I saw KC9LU calling CQ via PSAT tonight on the PSK-31 transpodner and also saw a W2EV “robot” probably terrestrial. Thanks for the antenna info. Bob, WB4APR *----- original message ---------* UP-Date, Excited now! Tried Rubber ducky inside,,, Nothing Rubber ducky outside, nothing 1/4 wave 2 meter GP but on the 70 cm freq inside, squelch breaks. 1/4 wave 2 meter GP but on the 70 cm freq outside started hearing it 2 min into the pass, had to use doppler 5 hogh for a while then spot on then later 5 low. heard at least two stations in there and I'm guessing the telemetry? it is a quite low tone in there. but even with that heard it pretty well. I may make a simple antenna that is more or less omni. and add the arr pre amp, got any plans for such an antenna?

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Re: [amsat-bb] Fw: NO84 Telemetry Equations (correction)
by Robert Bruninga 08 Jul '15

08 Jul '15

The TBAT first term should be -2.57E-6 not -2.5E-6… I crrected it below. They are now on the web page. Bob The first value is battery volts in hundredths. The second is bus power in mA. The third and 4th are +Z and -Z temps using the equation-1.26E-6*X^3 +0.0028 X^2 -2.215X +625. The last one is meaningless when the digi is ON. When the digi is off, then the last one is battery temp -2.57E-6* X^3 +0.0061X^2 -5.149X^+1475. In the 00011X00 value only the X has meaning. It is 0 if the digi is ON and it is 1 if the digi is OFF. Bob, WB4APR I was wondering more about decoding the telemetry values in a line like this that can be received on the two meter downlink: 00:00:18:41 : PSAT]APRSON,ARISS,qAR,W7KKE:T#515,854,075,502,862,410,00011000 In the original paper I found on the internet from 2007, the equations for decoding the values were "TBD". I assume that they have been determined and would like to get a copy of them. Steve AI9IN ----- Original Message ----- From: "Stewart Todd Morgan" <morgan_st(a)bellsouth.net> To: < skristof(a)etczone.com> Sent: Tuesday, July 07, 2015 8:46 PM Subject: NO84 Telemetry The best places to find your answers are probably the following: http://www.urel.feec.vutbr.cz/esl/ (Links for both BRICsat and PSAT (NO84) on the right side of the page) http://aprs.org/psat.html (for APRS telemetry decode) The first link has decoding information for PSK31 telemetry for both NO83 and NO84. 73 Todd AL0I Steve Kristoff skristof(a)etczone.com "A few chords strummed on a ukulele, enough to please a few others beside yourself, does more good in this world than the combined efforts of all the financiers and politicians that ever lived." – Frank Littig, Littig's New Harmony Self Instructor Chords for Ukulele, Banjuke or Taro Patch Fiddle, Chart Music Publishing House, Chicago, Illinois, 1924 Steve Kristoff skristof(a)etczone.com "A few chords strummed on a ukulele, enough to please a few others beside yourself, does more good in this world than the combined efforts of all the financiers and politicians that ever lived." – Frank Littig, Littig's New Harmony Self Instructor Chords for Ukulele, Banjuke or Taro Patch Fiddle, Chart Music Publishing House, Chicago, Illinois, 1924 _______________________________________________ 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] Fw: NO84 Telemetry Equations
by Robert Bruninga 08 Jul '15

08 Jul '15

The first value is battery volts in hundredths. The second is bus power in mA. The third and 4th are +Z and -Z temps using the equation-1.26E-6*X^3 +0.0028 X^2 -2.215X +625. The last one is meaningless when the digi is ON. When the digi is off, then the last one is battery temp -2.5E-6* X^3 +0.0061X^2 -5.149X^+1475. In the 00011X00 value only the X has meaning. It is 0 if the digi is ON and it is 1 if the digi is OFF. Bob, WB4APR >I was wondering more about decoding the telemetry values in a line like >this that can be received on the two meter downlink: > > 00:00:18:41 : > PSAT]APRSON,ARISS,qAR,W7KKE:T#515,854,075,502,862,410,00011000 > > In the original paper I found on the internet from 2007, the equations for > decoding the values were "TBD". I assume that they have been determined > and would like to get a copy of them. > > Steve AI9IN > > > ----- Original Message ----- > From: "Stewart Todd Morgan" <morgan_st(a)bellsouth.net> > To: <skristof(a)etczone.com> > Sent: Tuesday, July 07, 2015 8:46 PM > Subject: NO84 Telemetry > > >> The best places to find your answers are probably the following: >> >> http://www.urel.feec.vutbr.cz/esl/ (Links for both BRICsat and PSAT >> (NO84) on the right side of the page) >> http://aprs.org/psat.html (for APRS telemetry decode) >> >> The first link has decoding information for PSK31 telemetry for both NO83 >> and NO84. >> >> 73 >> >> >> Todd >> AL0I >> > Steve Kristoff > skristof(a)etczone.com > > “A few chords strummed on a ukulele, enough to please a few others beside > yourself, does more good in this world than the combined efforts of all > the financiers and politicians that ever lived.” – Frank Littig, Littig’s > New Harmony Self Instructor Chords for Ukulele, Banjuke or Taro Patch > Fiddle, Chart Music Publishing House, Chicago, Illinois, 1924 Steve Kristoff skristof(a)etczone.com “A few chords strummed on a ukulele, enough to please a few others beside yourself, does more good in this world than the combined efforts of all the financiers and politicians that ever lived.” – Frank Littig, Littig’s New Harmony Self Instructor Chords for Ukulele, Banjuke or Taro Patch Fiddle, Chart Music Publishing House, Chicago, Illinois, 1924 _______________________________________________ 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] Fox, "Easy Sats" - segway to PSAT PSK31? (X 2)
by Robert Bruninga 08 Jul '15

08 Jul '15

Don't forget we actually launched TWO identical 10m PSK31 uplink and UHF FM downlink transponders (Built by Brno Univ). SO if you go for PSAT, be sure to set up 7 minutes earlier in case BRICSAT comes up too. BRICSAT has the same PSK31 transponder and appears to be 7 minutes ahead of PSAT. I just heard it at 2211z. It is power starved, however and only comes up now and then when its battery accumulates enough juice. And of course, neither comes up unless there are users in the 10m 28.120 MHz passband. -----Original Message----- From: Robert Bruninga [mailto:bruninga@usna.edu] Subject: Fox, "Easy Sats" - segway to PSAT PSK31? Segway this argument to the 10m uplink now 100% available on PSAT PSK-31 which virtually no one is using. > With OSCAR 6 and 7... ten meter downlinks, it was just a matter of adding two meter transmit capability to an HF station. For PSAT PSK31 it is even simpler. Add a UHF FM HT to your HF station! > many... people that worked OSCARs, 6, 7, 8, and RS birds never > graduated from Mode A... > Just like many of the FM satellite users never graduate from FM. We give them what they ask for, a multi-user simultaneous transponder supporting dozens of simultaneous contacts, yet we have only seen 1 or 2 stations at a time give it a try. http://aprs.org/psat.html Just an observation. I thought this PSK-31 linerar uplink with FM downlink would make everyone happy. It's a foot in both camps.. <wink> Bob, WB4aPR

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Brief NO-84 RX with Omni Antenna
by Scott 08 Jul '15

08 Jul '15

Greetings all. Orbitron showed NO-84 passing directly overhead here in Virginia tonight, so against all odds I stuck the 5/8 mag. mount antenna parallel to the ground and perpendicular to the predicted track. I'm hesitant to bore the group but thought it was noteworthy that even with such a modest setup, I received a couple of packets (one with data; one incomplete). In fact, believe it or not, I had an FT-60 handheld laying on the coffee table that also broke squelch when I saw the two incoming packets on the computer screen via my Icom-28A. I thought that was pretty amazing as well, considering the low-power source. Here are the received packets: (timestamps are UTC on 8-July-2015) ----------------------------------------------------------------------------------------------------- Fm K0KOC-7 To APWW10 Via PSAT,ARISS* <UI pid=F0 Len=45 >[04:31:27] @043126h3923.18N/07724.92WlAPRS-IS for Win32 Fm W9QO To STPX1V Via PSAT,ARISS*,SGATE,WIDE2-2 <UI pid=F0 Len=11 >[04:31:37] 'oIPl -/] ----------------------------------------------------------------------------------------------------- 73, -Scott, K4KDR Montpelier, VA USA

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PSAT (Aprs) number?
by Lee Maisel 08 Jul '15

08 Jul '15

I can't find PSAT in Gpredict. Also looking for the Parkinson sat. Thanks! W5LMM --- This email has been checked for viruses by Avast antivirus software. http://www.avast.com

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Fw: NO84 Telemetry
by Steve Kristoff 08 Jul '15

08 Jul '15

----- Original Message ----- From: "Steve Kristoff" <skristof(a)etczone.net> To: "Stewart Todd Morgan" <morgan_st(a)bellsouth.net>; <skristof(a)etczone.com> Sent: Tuesday, July 07, 2015 9:27 PM Subject: Re: NO84 Telemetry >I was wondering more about decoding the telemetry values in a line like >this that can be received on the two meter downlink: > > 00:00:18:41 : > PSAT]APRSON,ARISS,qAR,W7KKE:T#515,854,075,502,862,410,00011000 > > In the original paper I found on the internet from 2007, the equations for > decoding the values were "TBD". I assume that they have been determined > and would like to get a copy of them. > > Steve AI9IN > > > ----- Original Message ----- > From: "Stewart Todd Morgan" <morgan_st(a)bellsouth.net> > To: <skristof(a)etczone.com> > Sent: Tuesday, July 07, 2015 8:46 PM > Subject: NO84 Telemetry > > >> The best places to find your answers are probably the following: >> >> http://www.urel.feec.vutbr.cz/esl/ (Links for both BRICsat and PSAT >> (NO84) on the right side of the page) >> http://aprs.org/psat.html (for APRS telemetry decode) >> >> The first link has decoding information for PSK31 telemetry for both NO83 >> and NO84. >> >> 73 >> >> >> Todd >> AL0I >> > Steve Kristoff > skristof(a)etczone.com > > “A few chords strummed on a ukulele, enough to please a few others beside > yourself, does more good in this world than the combined efforts of all > the financiers and politicians that ever lived.” – Frank Littig, Littig’s > New Harmony Self Instructor Chords for Ukulele, Banjuke or Taro Patch > Fiddle, Chart Music Publishing House, Chicago, Illinois, 1924 Steve Kristoff skristof(a)etczone.com “A few chords strummed on a ukulele, enough to please a few others beside yourself, does more good in this world than the combined efforts of all the financiers and politicians that ever lived.” – Frank Littig, Littig’s New Harmony Self Instructor Chords for Ukulele, Banjuke or Taro Patch Fiddle, Chart Music Publishing House, Chicago, Illinois, 1924

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SATPC32 V. 12.8C
by KE6PPE＠aol.com 08 Jul '15

08 Jul '15

Need some help . When I start Sap V. 12.8C and open menu Satellites the column of available and selected ( standard ) is to narrow to be able to read all the information in the columns . Is there a way to enlarge them to read all the information listed. LARRY MURPHY KE6PPE

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NO84 telemetry decode
by Steve Kristoff 08 Jul '15

08 Jul '15

Can someone point me to a site that has instructions/equations for decoding the telemetry from NO84, please? I found a Word document online from 2007 but I'm guessing there is an updated version. Thank you! Steve Kristoff AI9IN skristof(a)etczone.com

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N8RO/P Road Trip
by Ronald Oldham 07 Jul '15

07 Jul '15

During my recent road trip I was able to activate 10 grids that included EM50, EM84, EM98, EM99, FN13, FM28, FM15, FM04, EL79 and EL49. I will upload all contacts to LOTW using my call N8RO without any portable designation. Paper cards will go out over the next 1 – 2 weeks. Many thanks for all of the QSOs during this trip. 73, Ron – N8RO

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