March 2017 - AMSAT-BB - mailman.amsat.org

FT-991a 9600 Baud TNC Capability
by Tony 05 Mar '17

05 Mar '17

All: The Yaesu FT-991a has 9600 baud packet capability and I was wondering if anyone knows if it's possible to run 9600 via the USB data port with a 9600 baud sound card modem? Tony -K2MO

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m2 eggbeater
by doug49707＠gmail.com 04 Mar '17

04 Mar '17

I have previously been active on the birds.. ao-10 ao-13 ao-40 as well as the rs birds infact Ihave qsl cards from ao-7 the first time it was active My question is will I be able to work the leos with the eggbeaters or do I need something more robust I have a ic-9100 and I would mount them at about 60 feet on top of the tower. I will have a excellent path to the east. I would but a preamps in the uhf and vhf lines at the antenna. Doug WD8Z En85gc Sent from Mail for Windows 10

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Backup SatPC32
by David Maciel (XE3DX) 04 Mar '17

04 Mar '17

I'm going to make a new install on my PC, which files should I back up from SatPC32 to get it back as before ..? I want to avoid reconfiguring the software and recovering my preference .. How are you doing with SatPC32 on Win10 ..? David Maciel XE3DX *http://www.qsl.net/xe3dx/ <http://www.qsl.net/xe3dx/>* *david.xe3dx(a)gmail.com <david.xe3dx(a)gmail.com>*

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Yaesu FT847 question
by John Geiger 04 Mar '17

04 Mar '17

Has anyone used the Yaesu FT847 full duplex on the satellites with a dualband antenna and a diplexer? Is the isolation enough with a good diplexer than you can hear your own downlink without much interference from your transmit signal? 73 John AF5CC

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Re: [amsat-bb] EO-80
by Richard Tejera 04 Mar '17

04 Mar '17

Thanks, that does ring a bell. Too bad. Rick Tejera K7TEJ Saguaro Astronomy Club www.SaguaroAstro.org Thunderbird Amateur Radio Club www.w7tbc.org On March 3, 2017, at 16:26, John Brier <johnbrier(a)gmail.com> wrote: EO-80 and EO-88 have similar names. Simply based on that, seeing one might remind you of the other. Perhaps that wasn't it though... Regardless, the answer to the original question is on amsat.org "Additionally, the satellite carries a AMSAT-F constructed repeater as a return favor for support of the use of the amateur bands for the primary QB50 mission. Unfortunately the primary transceiver was damaged during a test of the repeater, and the repeater is power negative. Further activation of the repeater is unlikely at this time." http://www.amsat.org/?page_id=2948 73, John Brier KG4AKV On Fri, Mar 3, 2017 at 6:21 PM, Richard Tejera <Saguaroastro(a)cox.net> wrote: > I'm not getting what you mean? EO-80 is an FM transponder, EO-88 is a linear Transponder. > > Rick Tejera K7TEJ > Saguaro Astronomy Club > www.SaguaroAstro.org > Thunderbird Amateur Radio Club > www.w7tbc.org > > On March 3, 2017, at 16:12, John Brier <johnbrier(a)gmail.com> wrote: > > Maybe because Nayif-1 was just named EO-88? > > 73, John Brier KG4AKV > > On Fri, Mar 3, 2017 at 6:07 PM, Richard Tejera <Saguaroastro(a)cox.net> wrote: >> Funny, I was thinking the same thing this morning... >> >> Rick Tejera K7TEJ >> Saguaro Astronomy Club >> www.SaguaroAstro.org >> Thunderbird Amateur Radio Club >> www.w7tbc.org >> >> On March 3, 2017, at 11:01, Bill Attwood <whattwood(a)gmail.com> wrote: >> >> Anybody know what's happening with EO-80? Wasn't the FM transponder >> supposed to be turned on full-time ages ago? >> >> Cheers, >> Bill >> VE6WK >> _______________________________________________ >> 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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NO-84 update, progress on my end
by Mark Lunday 04 Mar '17

04 Mar '17

OK, tonight on the high pass at 0300 UTC over US East Coast, I heard the following with my IC910H tuned to 435.350 MHz FM-Narrow, feeding FLDIGI through a SignaLink USB card: 1. W3ADO beacon. The beacon signal was so strong it was almost like hearing an FM repeater that is "full quieting" with no background noise at all. 2. Someone transmitting early in the pass, but Doppler was moving the signal and I did not decode it because it eventually went right on top of the beacon. I attempted to transmit using DopplerPSK, 50 watts to an inverted L, but I did not see my signal on the downlink at all. I measured 50 watts output, and I listened on a separate receiver (no antenna) on 28.120 and I did hear PSK. Questions: * I am using TS480SAT for transmit. I have the dial on 28.120, which means that the center AF frequency is 2 kHz according to Doppler PSK. Is that correct for the dial frequency? * Any other suggestions on what I should do, or just try again on the next pass? Mark Lunday, WD4ELG Greensboro, NC FM06be wd4elg(a)arrl.net http://wd4elg.blogspot.com SKCC #16439 FISTS #17972

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Re: [amsat-bb] EO-80
by Richard Tejera 03 Mar '17

03 Mar '17

I'm not getting what you mean? EO-80 is an FM transponder, EO-88 is a linear Transponder. Rick Tejera K7TEJ Saguaro Astronomy Club www.SaguaroAstro.org Thunderbird Amateur Radio Club www.w7tbc.org On March 3, 2017, at 16:12, John Brier <johnbrier(a)gmail.com> wrote: Maybe because Nayif-1 was just named EO-88? 73, John Brier KG4AKV On Fri, Mar 3, 2017 at 6:07 PM, Richard Tejera <Saguaroastro(a)cox.net> wrote: > Funny, I was thinking the same thing this morning... > > Rick Tejera K7TEJ > Saguaro Astronomy Club > www.SaguaroAstro.org > Thunderbird Amateur Radio Club > www.w7tbc.org > > On March 3, 2017, at 11:01, Bill Attwood <whattwood(a)gmail.com> wrote: > > Anybody know what's happening with EO-80? Wasn't the FM transponder > supposed to be turned on full-time ages ago? > > Cheers, > Bill > VE6WK > _______________________________________________ > 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] EO-80
by Richard Tejera 03 Mar '17

03 Mar '17

Funny, I was thinking the same thing this morning... Rick Tejera K7TEJ Saguaro Astronomy Club www.SaguaroAstro.org Thunderbird Amateur Radio Club www.w7tbc.org On March 3, 2017, at 11:01, Bill Attwood <whattwood(a)gmail.com> wrote: Anybody know what's happening with EO-80? Wasn't the FM transponder supposed to be turned on full-time ages ago? Cheers, Bill VE6WK _______________________________________________ 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] Still trying to decode NO-84 (Doppler)
by Robert Bruninga 03 Mar '17

03 Mar '17

One thing to remember is that you cannot use normal Doppler correcting software that tunes the radio. The instantaneous radio steps cause Phase discontinuities and that completely destroys PSK31. The only ways to work well is to only try to decode when the bird is coming right at you or right aways from you and the Doppler is not rapidly changing. *** OR *** use the special PSK31 Doppler uplink correcting program written by Andy Flowers found on the PSAT web page… http://aprs.org/psat.html Here is his page: http://www.frontiernet.net/~aflowers/dopplerpsk/dopplerpsk.html This software also allows you to run full duplex so that you can uplink continuously throughtout the pass and independently receive all downlinks at the same time. The radio does not tune, but your uplink audio compensates for the uplink Doppler so that your trace in the downlink appears constant to everyone. Yes, you can run UHF Radio stepped Doppler correction that steps down in the usual 5 KHz steps 4 times during the pass. You may still loose an instant of phase corrupted characters, but only 4 times, not every few seconds as the SSB radio would try to do if the computer program was trying to compensate the SSB uplink radio. That help? Bob *From:* Fer [mailto:[email protected]] *Sent:* Thursday, March 02, 2017 10:25 AM *To:* Mark Lunday; AMSAT BB; Paul Stoetzer; Robert Bruninga *Subject:* Re: [amsat-bb] Still trying to decode NO-84 I am trying too to activate NO-84, 50w on 28.120 MHz with vertical antenna or dipole with FLDIGI (saw no difference, still weak), good downlink signal on UHF with SDR-14+SpectraVue as panadapter at 10.7 MHz, beacon decoded in FLDIGI, my weak signal sometime decoded, strong doppler on my signal despite I correct both with orbitron/wispdde using only fresh keps and GPS computer sync clock. Any idea? 73 Fer IW1DTU here some screenshoot link to dropbox https://www.dropbox.com/s/ec2i14l62u4ij3w/NO-84%202%20mar17%20uno.jpg?dl=0 https://www.dropbox.com/s/l1k3a3h8atyys5l/NO-84%202mar17%20due.jpg?dl=0 On Thursday, March 2, 2017 2:51 AM, Mark Lunday <wd4elg(a)outlook.com> wrote: 0230 UTC pass, saw the bear claw PSK 31 waveform again. Anyone else able to see the PSK dowllink? I am seeing 7 parallel traces, almost like the transmission is overloading the receiver. Attempting to attach the file to this email with a capture of what my SDR receiver is seeing... On a positive note, APRS is working perfectly on NO84 even at low passes. Mark Lunday, WD4ELG Greensboro, NC FM06be wd4elg(a)arrl.net http://wd4elg.blogspot.com SKCC #16439 FISTS #17972 _______________________________________________ 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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EO-80
by Bill Attwood 03 Mar '17

03 Mar '17

Anybody know what's happening with EO-80? Wasn't the FM transponder supposed to be turned on full-time ages ago? Cheers, Bill VE6WK

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