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

TLE Data.
by John Mac 15 Jul '17

15 Jul '17

Hi All, Does anyone know if the data at this site is kept up to date, can't seem to find any of the new sats in the lists.....? http://www.tle.info/joomla/index.php/tle-downloads John

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Testing funcube warehouse
by dave＠g4dpz.me.uk 15 Jul '17

15 Jul '17

Hi, Thank you all for your packets to data.g4dpz.space/warehouse it's been a great help in ensuring that the firewalls and redirection are working to my Mac Pro hosted in the shack for development of a new implementation of the warehouse to support JY1SAT & ESEO. I might need a few volunteers to execute a small Java app which simulates the dashboard feed. More on that later. 73 Dave, G4DPZ Sent from my iPhone

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Testing Funcube Warehouse in Preparation for New Satellites
by David Johnson 14 Jul '17

14 Jul '17

Hi, I'm making some changes to the processing of the data to improve performance of the warehouse. If you can spare a few packets, could you point your nayif-1 dashboards to my test environment: http://data.g4dpz.space/warehouse I only need a couple of passes. I will credit the main warehouse with your scores afterwards. Results at: http://data.g4dpz.space/nayif1 Many thanks. 73 Dave, G4DPZ FUNcube Team Member

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QSOs In LoTW
by R.T.Liddy 13 Jul '17

13 Jul '17

Gridders, The Rover-Qs from the past 2 days are now in LoTW. Let me know if I missed you or botched some info. Now at 98 Grids for Reverse/Rover VUCC! Which one should I choose for #100??? HI-HI 73, Bob K8BL

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SSTV
by James Brown 13 Jul '17

13 Jul '17

What do I need to decode the upcoming ARISS SSTV? My station is IC-910H and laptop with satpc32. I have a signalink collecting dust. What software should I use? Jim KI6WJ

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Pegasus Satellite
by John Mac 13 Jul '17

13 Jul '17

Hi All. I wonder if anyone has decoded the Satellite Pegasus, part of the new Constellation of sat's going around ? John

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Re: [amsat-bb] IC-821H problems - SOLVED
by Matthew Stevens 13 Jul '17

13 Jul '17

Just for future information, I (sort of accidentally) solved my problem! While setting up for field day a couple weeks ago, I checked my antenna (an Alaskan arrow, using only the bottom 2 sections) - and was surprised to notice it was around a 2.2:1 SWR on 435MHz. I thought I remembered it being better than that, but I guess not. I set up the full-length antenna for Field Day, and operated using a borrowed IC-910 (just in case my radio had the problem again.) In the full length configuration, the alaskan arrow is a 1.1:1 match on 435MHz. A few days after field day while I was putting away my equipment, something dawned on me - I have never had a problem with the 821 while using the antenna in its full length configuration. I don't use it that way very often, primarily for very low (sub 2°) passes of AO-7 and FO-29. You can probably see where this is going....My theory was that the high(ish) SWR was causing some RFI problems internally in the radio. RF going where it's not supposed to be, on the coax shield etc. I would think that it shouldn't be a problem for the radio to cope with a 2:1 mismatch...but the only way to find out was test the theory. I put 2 wattmeters inline, one each on the 2m and 70cm feedlines. Transmitting at ~25w on 435mhz, I was seeing around 2.5-3w coming back towards the radio on my 2m feedline. Figuring that probably wasn't a good thing, I borrowed a normal arrow II antenna - checked with the same meter, a 1:1 match on both 435 and 145. Virtually zero reflected power in the same test. I have been using that antenna for two weeks now, and haven't had a single problem with the radio. So, moral of this story is, check the obvious! Even if you think something is fine, or you think you remember checking it before - make sure. I had literally checked everything else on the radio, except the antenna. And for those of you using the Alaskan arrow, it might be work checking out if it is working as optimally as you think it is. To be honest, I have yet to find a situation where I could make a QSO with the alaskan and not with a regular arrow. I will be keeping the alaskan, probably to use as a base station antenna once I get a mast and rotor put up at my QTH. But from now on, I'll be sticking with the regular arrow for my day-to-day ops. That's the end of my novel.....just thought this might come in useful for somebody else down the road :-) 73, - Matthew kk4fem On Sat, Jun 17, 2017 at 11:59 PM, Nitin Muttin <vu3tyg(a)yahoo.co.in> wrote: > Hi Matthew, > > I feel this could be related to the "Ribbon Cable contact issue ". There is > one ribbon connector behind the S meter which goes to one of the boards. > Disconnect the cable by pulling on the connector socket clean the pins on > the cable with a rubber eraser (soft) and fix back the connector. > > 73 > Nitin [VU3TYG] > > > ________________________________ > From: Matthew Stevens <matthew(a)mrstevens.net> > To: Nitin Muttin <vu3tyg(a)yahoo.co.in> > Cc: "amsat-bb(a)amsat.org" <amsat-bb(a)amsat.org> > Sent: Saturday, 17 June 2017 12:18 AM > Subject: Re: [amsat-bb] IC-821H problems > > Yes, I do. Interestingly, I have not had any problems with FM in > either mode J or B. The other day I worked AO-85 successfully, and > immediately switched to EO-79, 2m SSB downlink. I heard no telemetry > or anything else. Then I pointed the antenna over towards some nearby > powerlines, which normally create a lot of annoying static on 2m - > nothing heard. I removed the coax from the 2m jack, and observed a > drop in the noise level (very slight), reconnected the coax and > checked over towards the power lines again, with the same result. I > wasn't hearing anything on 2m SSB, after I had, minutes before, had no > issues hearing on 2m FM. > > I'm glad I have other radios to use in the meantime, while I try to > figure this out :-) > > 73 > > > - Matthew kk4fem > > > On Sun, Jun 11, 2017 at 2:05 AM, Nitin Muttin <vu3tyg(a)yahoo.co.in> wrote: >> >> Hi Matthew, >> >> On 2m when on FM mode do you hear the white noise when you open the >> squelch. >> >> 73 >> Nitin [VU3TYG] >> >> >> ________________________________ >> From: Matthew Stevens <matthew(a)mrstevens.net> >> To: amsat-bb(a)amsat.org >> Sent: Saturday, 10 June 2017 7:06 PM >> Subject: [amsat-bb] IC-821H problems >> >> I'm having a strange issue with my 821. Periodically I lose all >> sensitivity, which I've particularly noticed on 2m SSB. I can attach and >> detach an antenna with no change in the noise level, and can't hear anything >> in the receiver (like the XW-2* beacons, or the AO-73 telemetry). Resetting >> the radio seems to fix it. >> >> It doesn't appear to be affecting 70cm, although I haven't had much chance >> to test that (there's not always a mode j sat up at the same time as a mode >> b one, and when it happens I'm normally just trying to reset the radio as >> fast as I can do I can operate the pass). Has anyone experienced anything >> like this before? >> >> 73, >> >> - Matthew kk4fem >> >> Sent from my iPhone >> _______________________________________________ >> 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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Carnival Cruise Line
by Ed Cunningham 13 Jul '17

13 Jul '17

To All, Thank you for your comments, I plan on "carry on" for my luggage, my Elk antenna is to long for my 21 inch carry on suitcase. I found plans for a 2 ele vhf/3 ele uhf using a 33 inch fiberglass arrow and .025 music wire. The wire will bend around the inside of the suit case and the arrow could be cut to fit and use a piece of rubber hose or plastic tube to hold it together when I want to use it. Thanks again for your help, Ed, N7EC

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Last Call for Papers -- Digital Communications Conference
by Ford, Steve, WB8IMY 13 Jul '17

13 Jul '17

This is the final call for technical papers for presentation at the 36th Annual ARRL/TAPR Digital Communications Conference, to be held September 15-17 in St Louis, Missouri at the Holiday Inn Airport West in Earth City. Papers will also be published in the Conference Proceedings. Authors do not need to attend the conference to have their papers included in the Proceedings. The submission deadline is July 31, 2017. Submit papers to via e-mail to maty(a)arrl.org<mailto:[email protected]<mailto:[email protected]%3cmailto:[email protected]>>, or via post to Maty Weinberg, KB1EIB, ARRL, 225 Main St, Newington, CT 06111. Papers will be published exactly as submitted, and authors will retain all rights.

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Re: [amsat-bb] SatPC32 and HDSDR
by Richard Lawn 13 Jul '17

13 Jul '17

While I've not yet tried what the writer is doing with his FCD pro + I've also wanted to try it. I can tell you that it is my understanding that Radio 1 in Satpc32 should be set to the receiver and Radio 2 the transmitter. I'd love to know who is works out for you as I too would like to try it. 73 Rick, W2JAZ -- Sent from Gmail Mobile

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