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

AO-51 Pass@10:30 UTC
by Kevin Deane 16 Nov '11

16 Nov '11

I swear I just heard some strange talking on the bird and something that sounded like a submarine pinging underwater. I thought I had Hunt for Red October on the boob tube or somethin. I heard myself on the downlink clear as day, really strong signal. I double checked my freqs and well there is no mistaking hearing yourself talk on the downlink of a satellite. Usually somebody is on these passes, but I got no response from several calls. Anyone ever experience anything like this? No I was not drinking or on anything. Kevin KF7MYK

2 1

Re: ARISSat-1 (37772) decay
by Mineo Wakita 16 Nov '11

16 Nov '11

Hello Jim, N8OQ. Thanks for your very valuable reply. Because it has the effect of the atmosphere density, I think that the re-entry into the earth's atmosphere of ARISSat-1 becomes really earlier than April 9, 2011. I added your this reply under the following my URL, http://www.ne.jp/asahi/hamradio/je9pel/arissat5.htm Thank you. JE9PEL, Mineo Wakita

1 0

Status on re-activating Prospero
by Frank Woolfe 16 Nov '11

16 Nov '11

As a WOOMERA Vet that was on site for 13 years and been witness and supported in one way or another many Rocket Launches, I am also interested on the PROSPERO situation.. Regards, Frank H Woolfe; Dip EE,VK5KV. Radio Officer Coast Guard Port Augusta 7 Leahy Street Port Augusta, SA 5700 Ph; Hm (618) 8641 2883 Mb; 0407 873 411 Email; frankwoolfe(a)bigpond.com

1 0

p/ from Dm67
by Jim Adams 16 Nov '11

16 Nov '11

Had 24 qso's from DM67 today, Ouray County Colorado about 12,000 feet. It was sunny and a balmy 18 degrees. One of the AO-27 passes was so low I was pointing the Arrow antenna straight down to the ground. QSO's with: AC0RA; N8RO; CO6CBF; XE1AO; W5PFG; KF7MYK; AJ5C; K7TEJ; KG7EZ; K4MOA; KB1RVT; WA3SWJ; NS7Q; KA6SIP; W0DHB; W0PTI; KL7XK; AND AC2GK/VE5. As always, if you need a QSL card for DM67, send me an email and I'll get you one in the mail. SASE not necessary. LoTW logs uploaded showing the correct grid. Jim Adams - K0BAM Delta Colorado Dm68

1 0

5 in EM55
by wa4hfn＠comcast.net 16 Nov '11

16 Nov '11

Congrats to Leo W7JPI award #41 5 in EM55 WA4HFN Damon em55 for info on this award look me up on qrz.com

1 0

CO6CBF/p EL91
by Hector Luis Martinez Sis 15 Nov '11

15 Nov '11

Hi guys This afternoon (15 Nov) I will do a work travel to EL91. If anyone needs this grid, please drop me an email for a schedule and I will carry my homebrew portable setup. 73! Hector, CO6CBF EL92 *************************************** Genius is one per cent inspiration, and ninety-nine per cent perspiration. -- Thomas A. Edison *************************************** --- Free the Cuban Five! http://www.injusticia.cubaweb.cu/, http://www.antiterroristas.cu/ Participe en Universidad 2012, del 13 al 17 de febrero de 2012. Habana, Cuba. http://www.congresouniversidad.cu/ Consulte la Enciclopedia Colaborativa Cubana: http://www.ecured.cu/

1 0

Re: [Re: Prospero] Commanding Error
by Roger Duthie 15 Nov '11

15 Nov '11

Tony - We heard something intriguing after about 14:43:40 UT as the tracking said the satellite was on it's way off to the north pole. The 'chuff-chuff' description reminds me of a sound we seem to hear quite a lot. Quite often it coincides with a pass, though I think we hear the same (or very similar) during times when Prospero is over the horizon. We are going to try the next pass at ~16:00UT if you want to listen in again. Our new ploy is to wait for the last most opportune moment to command, as the power _may_ be at it highest (longest charging of batteries, potentially). So, we'll do short commanding at above 30o el, and listen. -Rr. Tony Abbey wrote: > Hi Roger > > I could hear some "chuff-chuff" noises on the last pass and they show > a related doppler shift (although I am not correcting sufficiently) as > you can see in the attached plot. Maybe its some other noise but you > never know. > ------------------------------------------------------------------------ > > ------------------------------------------------------------------------ > On 26 Oct 2011, at 13:39, Roger Duthie wrote: >> Commanding went well, from as far as we could make out. We're not >> sure if we're getting anything back, however. >> >> We'll be doing this pass today, hopefully: >> >> 26 Oct >> <http://www.heavens-above.com/Gtrack.aspx?Session=kebgfdallleggankjgmmlbel&s…> >> 7.3 15:31:43 10 S 15:38:26 60 E 15:46:11 10 NNE >> >> [Times in BST = UTC + 1] >> >> -Roger

4 16

Re: ARISSat-1 Re-entry Prediction
by Fabio Azzarello 15 Nov '11

15 Nov '11

Hello everybody, I did my guess before the end of the "Chicken Little Competition"... maybe a little too early to catch the correct date of re-entry. Anyway, I've noticed that your prediction, Mineo, seems to be optimistic towards the date of re-entry. I think that, close to that date, sat's height will decrease much faster than you've predicted thus the re-entry could be sooner than April 9th. I will be pleased to share my prediction with anybody is interested. 73s Fabio IW8QKU/5 >Thanks, Mineo. Your work is interesting. > >If my memory is correct, the prediction shared at the AMSAT Symposium is for >April 2012. Your results agree! > >73, > >Mark N8MH > >At 11:13 AM 11/12/2011 +0900, Mineo Wakita wrote: >>I calculated and predicted the time of ARISSat-1 Re-entry. >> >>http://www.ne.jp/asahi/hamradio/je9pel/arissat5.htm >> >>JE9PEL, Mineo Wakita >> >> >>_______________________________________________ >>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

1 0

DO and DO NOT with your RF connectors
by i8cvs 15 Nov '11

15 Nov '11

Hi All, The following is a very interesting paper coming from GORE-TEX microwave test cables : DO HANDLING & STORAGE 1) Keep connectors clean 2) Extend sleeve or connector nut 3) Cap when not in use 4) Store in provided box 5) Unroll any cable loops VISUAL INSPECTION 1) Inspect all connectors-including mates-carefully before every connection 2) Look for metal particles, debris, scratches, dents, loose pins, jammed collects, worn plating, damaged nuts CLEANING 1) First try compressed air only 2) Use pure isopropanol with cotton swabs 3) Clean connector threads 4) Dry with compressed air GAGING 1) Gage all connectors before first use and periodically thereafter 2) Clean and zero the gage before using MAKING CONNECTIONS 1) Align connectors carefully 2) Make preliminary connection lightly 3) Turn connector nut only to tighten 4) If possible, use a torque wrench for final connection 5) Use proper torque 6) Loosen and re-torque periodically 7) Prevent rotation of connector bodies ------------------------------------------------------ DO NOT HANDLING & STORAGE 1) Touch mating plane surfaces 2) Set connectors contact-end down 3) Allow free cable end to drop 4) Store loose in drawer 5) Pull out cable loops 6) Use cables to reposition equipment VISUAL INSPECTION 1) Use or connect to a damaged or dirty connector-ever CLEANING 1) Use any abrasives, chlorinated solvents, or lubricants 2) Get isopropanol onto plastic support beads 3) Blow into connectors 4) Tap connectors to remove debris GAGING 1) Use an out-of-spec connector 2) Hold gage by housing-use plunger barrel only MAKING CONNECTIONS 1) Apply bending force to connection 2) Overtighten preliminary connection 3) Connect by rotating the famale 4) Tighten past "break" point of torque wrench 5) Snap wrench more than once 6) Approach break point rapidly 7) Use an end wrench to tighten 73" de i8CVS Domenico

1 0

Apologies: Re my Posting -Mystery of Lunar Ionosphere
by GW1FKY＠aol.com 15 Nov '11

15 Nov '11

Apologies, My posting on the subject should have included details of the address, but as it was forwarded it will perhaps have been filtered. Details are as follows. Ken Eaton GW1FKY NASA Science News for Nov. 14, 2011 How can a world without air have an ionosphere? Somehow the Moon has done it. Lunar researchers have been struggling with the mystery for years, and they may have finally found a solution. FULL STORY at _http://science.nasa.gov/science-news/science-at-nasa/2011/14nov_lunarionos… (http://science.nasa.gov/science-news/science-at-nasa/2011/14nov_lunarionosp…) A video version of this story is available at _http://www.youtube.com/watch?v=_zSrP4MacFE_ (http://www.youtube.com/watch?v=_zSrP4MacFE) You are currently subscribed to snglist as: _gw1fky(a)amsat.org_ (mailto:gw1fky@amsat.org) . This is a free service.

1 0