December 2011 - AMSAT-BB - mailman.amsat.org

Re: LARES To Test Einstein's Theory
by Andrew Glasbrenner 08 Dec '11

08 Dec '11

Almasat would have been a GREAT satellite to have had a secondary amateur two-way capability on; big, lots of power, and a great orbit. A few CTCSS decoders and maybe one or two extra command lines, and there could have been V/U or V/S voice capability, in a 1500km apogee orbit. It's a good example of why all the individual AMSAT groups should be as involved as possible with their own local educational projects from the beginning. The right ham at the right place could have turned this into a real gift for the community, and the university would have seen a huge increase in outside help with telemetry. The good thing is PWsat is on the same launch, has a FM to DSB transponder capability, and it appears the team is planning on exercising it. I know which satellite I'll help with telemetry before the others. 73, Drew KO4MA -----Original Message----- >From: "Trevor ." <m5aka(a)yahoo.co.uk> >Sent: Dec 8, 2011 9:57 AM >To: amsat-bb(a)amsat.org >Subject: [amsat-bb] Re: LARES To Test Einstein's Theory > >--- On Thu, 8/12/11, Giulio AB2VY <giuliop70(a)aim.com> wrote: >> The Microsatellite on the left of LARES >> http://spaceflightnow.com/vega/vv01/111207lares/ >> is "AlmaSat", first microsatellite of the University of Bologna (ITALY) > >IARU Coordinated frequencies at >http://www.amsatuk.me.uk/iaru/finished_detail.php?serialnum=39 > >also see http://www.almasat.org/ > >73 Trevor M5AKA >

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FW: [radio_pack] FW: A Ham's Night Before Christmas - YouTube
by Kevin Deane 08 Dec '11

08 Dec '11

Kevin KF7MYK From: EH(a)gbis.com To: radio_pack(a)lists.unr.edu Date: Wed, 7 Dec 2011 15:52:57 -0800 Subject: [radio_pack] FW: A Ham's Night Before Christmas - YouTube Thanks to Jack W3FUN... Good enough to share with all and A Very Merry Christmas to all... Erv KB7IWT http://www.youtube.com/watch?v=c_9REVC4dtc

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Voyager 1 Near Edge Of Solar System
by B J 08 Dec '11

08 Dec '11

http://spaceflightnow.com/news/n1112/06voyager/ I remember when it and Voyager 2 were launched in 1977. I don't think anyone could have predicted that it would last this long or go so far. 73s Bernhard VA6BMJ @ DO33FL

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Re: 2 Meter TV Interference
by k6yk 08 Dec '11

08 Dec '11

We also still have a channel 13 out of Sacramento. Most of the rest of them moved to UHF digital. (Too bad channel 13 didn't move, too! It causes great QRM on 220 Mhz if you happen to be within a few miles of the transmiiter). 73, John K6YK On Wed, 7 Dec 2011 22:11:15 -0000 "John Geiger" <aa5jg(a)fidmail.com> writes: > Rock Island, IL, where I used to live, still has a channel 4 on VHF > channel > 4. > > 73s John AA5JG > > ----- Original Message ----- > From: "Charles Suprin" <hamaa1vs(a)gmail.com> > To: "Bob Bruninga" <bruninga(a)usna.edu> > Cc: <amsat-bb(a)amsat.org>; "Gordon JC Pearce" <gordonjcp(a)gjcp.net> > Sent: Wednesday, December 07, 2011 9:48 PM > Subject: [amsat-bb] Re: 2 Meter TV Interference > > > >I didn't think there were any vhf stations left. All the numbers on > the > > channels now are virtual. All the tv antenna plans are for uhf > bands. A > > quick look in the Boston market and the lowest channel is 19, > channel > > 2@500MHz. Are there places that still use vhf? > > > > Charles > > On Dec 7, 2011 1:38 PM, "Bob Bruninga" <bruninga(a)usna.edu> wrote: > > > >> HPF above 500 MHz? Then the TV would not be able to see anything > but a > >> few > >> UHF channels. > >> > >> What is needed is a stub filter. Just a piece of open ended coax > 13" > >> long > >> "T"ed into the antenna lead.... > >> > >> The 13" is about 66% of a quarter wave at 2 meters. > >> > >> Done > >> > >> Bob, WB4APR > >> > >> -----Original Message----- > >> From: amsat-bb-bounces(a)amsat.org > [mailto:[email protected]] On > >> Behalf Of Gordon JC Pearce > >> Sent: Wednesday, December 07, 2011 3:02 AM > >> To: amsat-bb(a)amsat.org > >> Subject: [amsat-bb] Re: 2 Meter TV Interference > >> > >> On Tue, 6 Dec 2011 21:17:55 -0600 > >> Wyatt Dirks <wyattdirks(a)msn.com> wrote: > >> > >> > >> > Just recently I have been having troubles with a neighbor while > I am > >> working the FM satellites(SO-50 and AO-27). The setup I am > currently > >> using > >> is my mobile setup because I am unable to put a base station up > for many > >> reasons. I am using a FT8900 with 50 watts out into a 1/4 wave or > 1/2 > >> Larson > >> mobile antenna.The 1/4 wave is mounted permanently via a hole in > the roof > > of > >> my truck an the 1/2 wave is mounted on a mount opposite the > factory > >> installed FM/AM radio whip. It doesn't seem to matter what > antenna I use > >> for > >> the problem to occur. Then I use either the arrow antenna or my > cju for > >> the > >> downlink. > >> > >> Use 5W into a hand-held Yagi. You'll get far better results. > >> > >> > >> > Today I had another local ham over at the request of the > neighbor and > >> > his > >> mobile Kenwood radio did the same thing to the neighbors tv when > he > >> transmitted on 2 meter with 50 watts out. He also recommended > that they > >> get > >> a filter. I did not see the specs on the filter nor do I know > what > >> bandwidth > >> it was for. > >> > >> What you want is a highpass filter that will lop off everything > below > >> 500MHz. The chances are that your TX output is clean enough but > the > >> little > >> amplifier in the splitter for the TV is causing all sorts of > intermod - > >> and > >> probably covers from broadcast VHF radio to the top of the TV > band. > >> > >> -- > >> Gordon JC Pearce MM0YEQ <gordonjcp(a)gjcp.net> > >> _______________________________________________ > >> Sent via AMSAT-BB(a)amsat.org. Opinions expressed are those of the > author. > >> Not an AMSAT-NA member? Join now to support the amateur satellite > > >> program! > >> Subscription settings: > http://amsat.org/mailman/listinfo/amsat-bb > >> > >> _______________________________________________ > >> Sent via AMSAT-BB(a)amsat.org. Opinions expressed are those of the > author. > >> Not an AMSAT-NA member? Join now to support the amateur satellite > > >> program! > >> Subscription settings: > http://amsat.org/mailman/listinfo/amsat-bb > >> > > _______________________________________________ > > Sent via AMSAT-BB(a)amsat.org. Opinions expressed are those of the > author. > > Not an AMSAT-NA member? Join now to support the amateur satellite > program! > > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > _______________________________________________ > Sent via AMSAT-BB(a)amsat.org. Opinions expressed are those of the > author. > Not an AMSAT-NA member? Join now to support the amateur satellite > program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > ____________________________________________________________ Get Free Email with Video Mail & Video Chat! http://www.juno.com/freeemail?refcd=JUTAGOUT1FREM0210

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Re: 2 Meter TV Interference
by Bob Bruninga 07 Dec '11

07 Dec '11

>> What is needed is a stub filter. Just a piece of open ended coax >> 13" long "T"ed into the antenna lead.... >> The 13" is about 66% of a quarter wave at 2 meters. > That could work too, but not if they have an active splitter > that's distorting and crunching away like a little fuzzbox, > generating all kinds of harmonics. In that case, the stub needs to go on the input of that device. Though, I have not seen a lot of "F" connector "T"'s... which would make it easy. So best to take a piece of cable with "F"'s on both ends, and "splce" the stub in the center by soldering carefully and sealing it all up. Bob, WB4APR

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IC 910H Hints?
by Joe Batty 07 Dec '11

07 Dec '11

Hi Folks, I'm trying to learn all the little ins and outs of the IC 910H that I've had for a short time. Is there an active station in the Portland, OR or Beaverton, Hillsboro area that has this radio that I can communicate with to help learn some little hints and quirks for it's operation. Especially when it comes to using SatPC32 and the LVB Tracker interface. It's all working, but I'd really like to become a lot more efficient with the radio, software and the protocol. I don't hink I'm being very efficient with either the radio and software. Being a newbie to Sats I'd really like to get the operating procedures down like I know what I'm doing. hihi Thank so much to all the Amsat folks, Dee especially, and have a great holiday. Also, a very honorable thank you to those surviving Pearl Harbor Day, Dec. 7th 1941. A very special day indeed for our real hero's. 73 Joe KT7E from the great wet Pacific North West

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Re: Two Meter TV Interference
by Clint Bradford 07 Dec '11

07 Dec '11

It is your neighbor's sub-par electronics that are not properly filtered/insulated. But no one wants to hear that they need to purchase a new audio-visual system so a neighbor can play with amateur radio ... (grin) This is one of our greatest "public relations" problems with the hobby: Educating non-hams as to what we are doing, why it might cause interference in their setups, and why we like ugly antennas ... First - 50W for '50 and '27 is ridiculously high power. You are crippling yourself with sub-par antennas for working the LEOs. I mean, a fifteen dollar tape measure beam and a single Watt gets the job done. If you insist upon this inefficient setup, then you have a couple choices ... 1. Do not operate when your neighbor may be watching TV. 2. Move your car a couple blocks away, if your neighbor may be watching TV. 3. And this is the most exciting alternative: Invite your neighbors over for a cup of coffee or hot chocolate - about 15 minutes before a pass of '50 or '27. Show them your setup. Show them a couple ham magazines. Tell them about amateur radio in your community, and how your local municipality has included amateur radio in the area's emergency plans. Gently educate them to the fact that when an emergency hits the region, it is ham radio that will be assisting the authorities as things get back to normal. THEN, take 'em out to your car, and start working the satellite. "And about 600 miles away is a little cube this big (hold your hands out about 25cm wide) and listen - we're going to talk THROUGH IT!" Do not laugh - this tactic has worked for me, and many others. Try it - before the relationship with your neighbor deteriorates any further. Clint Bradford http://www.k6lcs.com 909-241-7666

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New online logging site:AAR29/SAT
by Daniel "Nick" Kucij 07 Dec '11

07 Dec '11

I'm posting below information just received from Eric/F4EJW regarding a new website, AAR29/SAT, he and Remy, F1NNI have put up to provide an online log sharing resource for each of the amateur satellites in service. To find it, go to Eric's blog link listed below, then click on the Amateur Radio Satellite AAR29 banner. 73 Nick KB1RVT Hello, The special site satellites is opened you will so find information miscellaneous as well as a live log for the recording of the contacts on the diverse amateur Radio satellites. Good traffic has all and has all. 73 Qro ERIC F4EJW and F1NNI REMY click here http://f4ejw.over-blog.com/

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ARISSat
by Roland Zurmely 07 Dec '11

07 Dec '11

Updated graphics of average height and fall rateof ARISSat: http://www.qsl.net/py4zbz/arissat.htm#r 73 de Roland PY4ZBZ

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Re: Two Meter TV Interference
by Jim Adams 07 Dec '11

07 Dec '11

I agree with Clint's observations. I use an ht with 1 watt and a handheld antenna and do just fine. It's your neighbors goofy setup causing him problems. Jim Adams - K0BAM Delta County, Colorado DM68

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