[amsat-bb] SO-50 06:01-06:14 Not a soul...
serves me right for trying at midnight my time... :( not a soul on the satellite, EXCELLENT overhead pass Long... Sigh... Lee W5LMM ___ Sent via AMSAT-BB@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
[amsat-bb] Video with historic photos of the DOVE satellite
http://www.youtube.com/watch?v=XqTVsJtNHCs 73 de Roland PY4ZBZ ___ Sent via AMSAT-BB@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
[amsat-bb] Re: MMT 432/144 Manuals
Hi Ben, I have the original schematic diagram of the MMT 432/144 MHz transverter and if you need it I can send a copy to you as email attachement. 73 de i8CVS Domenico - Original Message - From: Ben Gelb b...@gelbnet.com To: amsat-bb@amsat.org Sent: Saturday, August 13, 2011 10:17 PM Subject: [amsat-bb] MMT 432/144 Manuals Hello all - I recently picked up an MMT 432/144 module for cheap. It seems to work OK on receive, but seems to have very low output on transmit. Does anyone have any manual or schematic type information for this unit? I think I have some debugging ahead and schematics, especially, might come in handy. Thanks, Ben ___ Sent via AMSAT-BB@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@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
[amsat-bb] Re: [YCCC] Netbooks
Try and get Linux Mint, No version is crippled and it's free, On 08/13/2011 08:20 PM, John Allen wrote: By the way, try to get Win 7 Home Premium and avoid the crippled Win 7 starter edition if you can. John K1AE ___ Sent via AMSAT-BB@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
[amsat-bb] Re: [YCCC] Netbooks
Battery life is no better because the battery is (generally) smaller although larger batteries are available at a cost. Other than that, there are no real technical issues, it's a laptop with a small screen/keyboard and an Intel Atom processor. On 08/13/2011 09:09 PM, Alex Malyava wrote: What's the benefit of net-books? Size, weight, battery life? they are cheaper, but not that much - cheapest 15 notebooks are $280...320. CPU and memory are also not as good as in notebooks. Where you gonna use it? If someone tested net-book+radio configuration and it runs no problem 100% - I can be convinced that there is no reason to pay more for notebook and carry more weight to some DX country. AM ___ Sent via AMSAT-BB@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
[amsat-bb] FW: [ans] ANS-226 AMSAT Weekly Bulletins
AMSAT NEWS SERVICE ANS-226 ***[Keep watch with ANS for any late breaking details of ARRISat-1]*** ANS is a free, weekly, news and information service of AMSAT North America, The Radio Amateur Satellite Corporation. ANS reports on the activities of a worldwide group of Amateur Radio operators who share an active interest in designing, building, launching and communicating through analog and digital Amateur Radio satellites. Please send any amateur satellite news or reports to: ans-edi...@amsat.org In this edition: * ARISSat-1/KEDR at +10 Days: ON-ORBIT and OPERATIONAL * BOD Ballot Reminder * Send For Your ARISSat-1/KEDR Certificates * 2011 AMSAT Space Symposium Call for Papers Continues Satellite Shorts * 2011 AMSAT Symposium and Annual Meeting Registration Now Open * Reminder: The DARA Matching Gift Challenge Runs Until September 1 * ARISS Status - 8 August 2011 * AMSAT Contest * ARISSat-1 Battery is failing faster than expected SB SAT @ AMSAT $ANS-226.01 ARISSat-1/KEDR at +10 Days: ON-ORBIT and OPERATIONAL AMSAT News Service Bulletin 226.01 From AMSAT HQ SILVER SPRING, MD. August 14, 2011 To All RADIO AMATEURS BID: $ANS-226.01 Hundreds of reception reports have been received since ARISSat-1/KEDR was deployed from the ISS. Full operational capability of the satel- lite has been confirmed in the 10 days since the start of the mission on August 3. The satellite's power system monitors the battery voltage and switches between High power mode (continuous transmission) when sunlight is charging the battery and Low power mode (40 seconds transmit/2 minutes idle) when in eclipse. Telemetry data shows that the ARISSat-1 Battery voltage is decreasing each eclipse period. It therefore is taking longer for the battery to charge up to 32.5V to allow the switch from Low Power to High Power when the satellite enters an illumination period. Kenneth Ransom, N5VHO has plotted the battery min/max for the last 8 days. The data shows that the battery voltage is decreasing at a faster rate than expected. Kenneth's graph can be found on the arissat1.org site under FAQ: http://tinyurl.com/3e5c2y8 (arissat1.org) The effect of this is that ARISSat-1/KEDR remains in Low power mode for a period of time after exiting eclipse. The team recommend that users take advantage of the High Power mode as much as possible over the next few days. 435 MHz - 145 MHz Linear Transponder - OPERATIONAL -- The linear transponder operates in Mode U/V (70 cm Up, 2m Down). It is an 16 KHz wide inverting passband. The convention is to TX LSB on the 435 MHz uplink and RX USB on the 145 MHz downlink. Several amateur radio operators have been reporting successful contacts via the linear transponder. After the initial success with the linear transponder reported by KO4MA, K8YSE, KD8CAO, and JN1GKZ last week news of addition contacts have been received from amateur radio operators worldwide: + Henk, PA3GUO uplinked an SSTV signal to the linear transponder and received the picture on the downlink. He posted a copy of the rec- cecived image at: http://www.pa3guo.com/pa3guo_arissat1_sstv_9aug2011_0258utc.jpg His station configuration was: Uplink HW: TS2000X, 435MHz, 5W RF power + 12 elements beam Uplink SW: MMSSTV + HRD (doppler control) Downlink HW: FunCubeDongle (SDR) + SP-2000 preamp + 2x6 elements beam Downlink SW: MMSSTV + DK3WN Satcontrol (doppler/freq control) + HDSDR + Andre, ZS2BK reported a successful two-way CW contact with Pierre, ZS6A on August 5. + Alex, VK5ALX reported a contact with Geoff, VK2ZAZ on August 6. + Bruce, VE9QRP was able to access the linear transponder with 40 watts into a Lindenblad on TX and another omni on receive. Bruce commented, It's an amazing thrill to work our AMSAT SDX for the first time, and my sense is that any VO-52 class station should be able to hear its downlink. + Luciano, PY5LF had a contact with Roland, PY4ZBZ and recorded it: http://www.youtube.com/watch?v=oJ2Gujm2vtc 145.950 MHz FM Downlink - OPERATIONAL 145.919 MHz CW Beacons - OPERATIONAL The CW transmissions include the satellite callsign ID RS01S, select telemetry, and callsigns of people actively involved with the ARISS program. 145.920 MHz SSB BPSK-1000 Telemetry - OPERATIONAL - AMSAT needs your telemetry from ARISSat-1/KEDR. Since there are no Whole Orbit Data storage mechanisms onboard ARISSat-1/KEDR, your submissions are the only way for AMSAT to collect the spacecraft telemetry and KURSK experiment results. + Recorded file ARISSat-1/KEDR and Kursk telemetry CSV files (in the ARISSatTLM folder) can be sent as an e-mail attachment to: teleme...@arissattlm.org + If you are running ARISSatTLM and receiving the signal live from ARISSat-1/KEDR, please enable the telemetry forwarding option. + The latest telemetry can be seen LIVE on your
[amsat-bb] ARISSat-1 Chicken Little Contest Announced!
All, By popular demand we are going to be running a Chicken Little Contest for ARISSat-1. Using the method of your choice, give us your best guesstimate of when it will finally reenter. One submission per person, class, or club, please. Alan WA4SCA AMSAT is happy to announce the ARISSat-1 Chicken Little Contest. This is your opportunity to calculate, or guess, when ARISSat-1 falls out of orbit. This is defined as the time it crosses an altitude of 78 kilometers, which is considered to be the point of no return. While not part of the contest, the actual reentry may be visible depending on location. Reports are encouraged. As in the past, we will have three divisions: + Student category for Kindergarten through grade 8 + Student category for High School, grades 9 through 12 + All others will be in the adult category. In addition to individual students, we encourage classes or organ- izations such as science clubs to make group submissions. Submissions are limited to one per person or group. Members of a group making a submission may not submit a second, individual entry. + Adults and individual students should include their name and amateur callsign if they have one. + Individual students should also give their grade in school. + Student groups should include the name of their group or class, school, and which category they represent. + Please give the UTC date in the format of day, month, year, hours, minutes, and seconds. + Finally, we would like to know your city, state, province or region, and your country. + Submissions will close on 15 September 2011 at 23:59:00 UTC. The closest predictions in each category will be recognized for their achievement. Send your submissions to chickenlit...@arissat1.org. Good luck! [ANS thanks ARISSat-1/KEDR team for the above information] ___ Sent via AMSAT-BB@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
[amsat-bb] Re: [YCCC] Netbooks
Alex: Benefits of a netbook (I have the smaller of the two Acer sizes, only something like 8.9 inches for the screen): Size: Yes Weight: Yes. My Acer Aspire One weights almost exactly 1.0 kg. (2.2 lbs.) Acer sells one size larger screen (10+ inches), but it weights more. Battery life: Sucks. I get 2.25 hours. You can squeeze out another 45 minutes by turning off wi-fi, turning off sound, etc. You can get a bigger battery, or a replacement 2d battery (to swap in), but this adds weight. Keyboard: 85% the size of normal, but I find it tolerable -- even for legal writing. Not great, but tolerable. Ham radio: I brought my tiny Acer Aspire One to Bulgaria for the LZ HF Open. It did everything I asked of it. It sent CW, controlled the IC-7000, ran N1MM. There was no internet, but on another occasion, if I needed it, I could also run internet spotting for point and shoot. (But remember, you run out of screen real estate faster on a small screen.) Business: Smaller means easier to bring along with a projector to show zoning people why they are wrong about their ideas on restricting antennas. When travelling, I like the tiny Acer because it fits into a European man-bag and weighs only 1 kg. No need for a computer bag. This means I can check e-mail whenever I find myself in a wi-fi hotspot. Some of the hotels/inns don't have wi-fi, and I'll never remember to come back and find that coffee shop with wi-fi. Downside: CPU slower, less memory. Result: Working on a 25 MB document (a filing with photos) is occasionally irritating because it is slower than my desktop. My tiny netbook uses the Atom processor, which is just barely enough. Conclusion: MicroCenter sells Acer Aspire One netbooks about twice a year for $199. If you break one on the road (or lose one, but thank goodness neither has happened to me yet), you don't feel so bad. I think of mine as a really nice toy that I thoroughly enjoy. And I really like travelling with Skype. But I doubt I'd recommend a netbook for processor-intensive engineering, or extensive use of Google Earth. Bottom line to question asked: I've used my netbook with an IC-7000 and it ran 100%. Fred Hopengarten, Esq. K1VR -- hopengar...@post.harvard.edu Six Willarch Road Lincoln, MA 01773 www.antennazoning.com -Original Message- From: yccc-boun...@contesting.com [mailto:yccc-boun...@contesting.com] On Behalf Of Alex Malyava Sent: Saturday, August 13, 2011 5:10 PM To: tjja...@earthlink.net Cc: yccc; amsat-bb; obo Subject: Re: [YCCC] Netbooks What's the benefit of net-books? Size, weight, battery life? they are cheaper, but not that much - cheapest 15 notebooks are $280...320. CPU and memory are also not as good as in notebooks. Where you gonna use it? If someone tested net-book+radio configuration and it runs no problem 100% - I can be convinced that there is no reason to pay more for notebook and carry more weight to some DX country. AM On Sat, Aug 13, 2011 at 9:05 AM, ANTHONY JAPHA tjja...@earthlink.netwrote: All, Mni tnx for the responses about netbooks. Generally, a lot of satisfaction with them, with concerns abt. speed and keyboard size. In my application, neither should be a problem. ASUS was highly recommended. 73, Tony, N2UN ___ YCCC Reflector mailto:y...@contesting.com Yankee Clipper Contest Club http://www.yccc.org Reflector Info: http://lists.contesting.com/mailman/listinfo/yccc ___ YCCC Reflector mailto:y...@contesting.com Yankee Clipper Contest Club http://www.yccc.org Reflector Info: http://lists.contesting.com/mailman/listinfo/yccc ___ Sent via AMSAT-BB@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
[amsat-bb] Re: Decoding wideband recordings
On Sat, Aug 13, 2011 at 7:07 PM, Phil Karn k...@philkarn.net wrote: On 8/10/11 8:24 PM, Tom Azlin N4ZPT wrote: I have a Fun Cube Dongle so I would Phil. Thanks and 73, Tom n4zpt Okay, everybody make and keep your wideband I/Q recordings and I'll work on an enhancement to my demodulation/decoding software to process them. It may not run in real time on slower machines because of the need to search a wider frequency range, but this won't matter if it can work on a recording. I can probably speed things up by including an orbit model in the modem to predict Doppler open-loop, but this will take time to implement and it will still be vulnerable to small errors in the elements and/or your clock, especially around closest approach. So record the date and time of your recordings and the current eleset at that time. For those who have not noted this feature, HDSDR will open a recording scheduler if you right click on the 'record' button. It saves files with UTC time appended. The tricky part is that you have to set the scheduler manually in local time. I've been thinking it would be a nifty hack to make a FCD recorder for a set of satellites using a very small computer, like the BeagleBoard. It seems to me that a daily cron job with 'Predict' would just about do what was necessary, especially now that we have a commandline tool for the FCD. The only part that would take some fiddling would be piping the USB sound card into a file with the proper headers for HDSDR. 73, Bruce VE9QRP -- http://ve9qrp.blogspot.com ___ Sent via AMSAT-BB@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
[amsat-bb] Re: Decoding wideband recordings
Try the following #!/bin/bash # # Record sdr data from FunCube Dongle. # # Usage: fcd_record extra_options filename # example: fcd_record --duration=60 tt.wav # DEV=--device=hw:3 OPTIONS=--format=S16_LE --channels=2 --rate=96000 arecord $DEV $OPTIONS $@ On Sun, 14 Aug 2011, Bruce Robertson wrote: On Sat, Aug 13, 2011 at 7:07 PM, Phil Karn k...@philkarn.net wrote: On 8/10/11 8:24 PM, Tom Azlin N4ZPT wrote: I have a Fun Cube Dongle so I would Phil. Thanks and 73, Tom n4zpt Okay, everybody make and keep your wideband I/Q recordings and I'll work on an enhancement to my demodulation/decoding software to process them. It may not run in real time on slower machines because of the need to search a wider frequency range, but this won't matter if it can work on a recording. I can probably speed things up by including an orbit model in the modem to predict Doppler open-loop, but this will take time to implement and it will still be vulnerable to small errors in the elements and/or your clock, especially around closest approach. So record the date and time of your recordings and the current eleset at that time. For those who have not noted this feature, HDSDR will open a recording scheduler if you right click on the 'record' button. It saves files with UTC time appended. The tricky part is that you have to set the scheduler manually in local time. I've been thinking it would be a nifty hack to make a FCD recorder for a set of satellites using a very small computer, like the BeagleBoard. It seems to me that a daily cron job with 'Predict' would just about do what was necessary, especially now that we have a commandline tool for the FCD. The only part that would take some fiddling would be piping the USB sound card into a file with the proper headers for HDSDR. 73, Bruce VE9QRP -- http://ve9qrp.blogspot.com ___ Sent via AMSAT-BB@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 Al -- # Al Bolduc - a.bol...@comcast.net - ka...@amsat.org ___ Sent via AMSAT-BB@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
[amsat-bb] ARISSat=1 Report)s)
*I would like to send 2 telemetry (reception)ARISSat-1 reports: 1) Stuat Ballinger (WA2BSS); August 8/1008(UTC Signal Strength S1 to S3 Clearly heard the ID, but couldn't make out the telemetry stats; Poughkeepsie,NY USA; wa2...@gmail.com Tranciver used: Kenwood TM-255A Ringo Ranger. 2) Stuart Ballinger (WA2BSS);August 13/0104 UTC Signal strngth S1 No ID, but heard voices, no telemetry. the noise flor ws nil for only abr 1/2 min. Poughkeepsie,NY USA;wa2...@gmail.com Tranceiver used: Kenwood TS-2000 Ringo Ranger! Thanks,. 73,.Stu * ___ Sent via AMSAT-BB@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
[amsat-bb] Re: Secret Word question
James: ARISSat1.org are getting hundreds of reception reports flooding into the organization. I reported my secret word to them four days ago with no pdf certificate received to date. With the Aug 11 delay in high power mode while entering sunlight and then the Aug 12 battery failing has caused a shift in priorities, less time devoted to generating pdf certificates is my guess. We all need to be extra patient on this one. 73's Mike Schaffer KA3JAW EL87 Tampa, Florida ___ Sent via AMSAT-BB@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
[amsat-bb] Arissat-1
Hi Voice telemetry , 145950.0 , 17:30 UTC , Transponder ON: MET - 40min IHU Temp - 42C Control Panel Temp - 56C Battery Voltage - 36.6V Battery Current -4mA 73 PY5LF LUCIANO FABRICIO Curitiba-PR-Brazil GG54jm http://www.qrz.com/db/py5lf http://www.qrz.com/db/py5lf ___ Sent via AMSAT-BB@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
[amsat-bb] Thinking about ARISSat-2
I know the ARISSat team is busy with bird #1, but I'm just thinking about lessons we might learn for version 2. I think it is great that we are getting so much data about the battery. Assuming that there might be another satellite launched from the ISS, we will still have the same man-rating issues, and thus the battery might need to be the same Russian space suit battery. If that were true, what might we take away from #1 to help with #2? It was hoped that many shallow charge cycles might keep the battery running longer than the few deeps cycles that it is spec'ed for. Sounds like we got maybe 10 days out of it before it started to deteriorate. What about another strategy? Suppose we did exactly what the battery was spec'ed for: Deep cycles. Let's say 333ma current draw and let's say that the battery is rated at 24Ah. So what if we only charged the battery every 3 days; maybe even turn off the transmitter while it charges. 5 cycles is 15 days. A bit better than this time. Maybe (also) we extend that 3 days between charges by only using the batteries in eclipse. This obviously requires additional electronics; in particular the battery can't be on the main power bus; we want to be able to isolate it to prevent it charging on every orbit. But that might be good anyway...the ability to isolate the battery might be desirable when the battery does die for good. Just thinking... Burns, W2BFJ ___ Sent via AMSAT-BB@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
[amsat-bb] what's flying that does packet
I may be going on an extended adventure which will take me far from the usual communications facilities of phone, internet, or even regular postal mail. This pretty much leaves HF and SAT as my options for messaging and communication with the outside world. As far as SATs go, what's presently flying or near term planned for launch that will serve as a message relay for nts type messages? Thanks, Eric AF6EP ___ Sent via AMSAT-BB@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
[amsat-bb] Re: Secret Word question (Mike Schaffer)
Mike Alan, Thank you so much for your reply to my question about the Secret Word contest. I sure do not want my post about the contest to imply that I am in a hurry to receive a certificate. I am so appreciative of those who volunteer and make programs like ARISSAT-1 so interesting, exciting, informative, and even habit forming. I have been an active ham for 50 years but relatively new to the satellite area. I have come to realize just how habit forming this facet of Amateur Radio is. I plan my life around the acquisition and loss of signals, having the radio prepared with the appropriate software running, antenna positions, and on and on. I sincerely thank everyone who contributes to the many pieces that make the satellite puzzles complete. OMG, now a contest to guess (you smart folks probably know!) when ARISSAT-1 will reenter. This will be like losing a family member! Mine will only be a guess...discussing death is hard to do! Thank you to all involved! 73, James W5AOO Message: 7 Date: Sun, 14 Aug 2011 10:32:48 -0700 (PDT) From: Mike Schafferdaets...@yahoo.com To:amsat-bb@amsat.org amsat-bb@amsat.org Subject: [amsat-bb] Re: Secret Word question Message-ID: 1313343168.11149.yahoomail...@web113816.mail.gq1.yahoo.com Content-Type: text/plain; charset=iso-8859-1 James: ? ARISSat1.org are getting hundreds of reception reports flooding into the organization.? ? I?reported my secret word to them four days ago with?no pdf certificate received to date. ? With the Aug 11 delay in high power mode while entering sunlight and then the Aug 12 battery failing has caused a shift in priorities, less time devoted to generating pdf certificates is my guess. ? We all need to be extra patient on this one. 73's ? Mike Schaffer KA3JAW EL87 Tampa, Florida Message: 9 Date: Sun, 14 Aug 2011 13:09:44 -0500 From: Alan P. Biddle To: 'James Luhn'l...@wt.net,amsat-bb@amsat.org Subject: [amsat-bb] Re: Secret Word question Message-ID:846D30D9E0094D3097F49793FB34EB70@WA4SCA Content-Type: text/plain; charset=us-ascii James, This is handled by a small team of real humans, or at least real hams. Emphasis on the word small. The confirmation process is active, but it will take a little time to get things up to full speed. 73s, Alan WA4SCA ___ Sent via AMSAT-BB@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
[amsat-bb] Re: Thinking about ARISSat-2
--- On Sun, 14/8/11, Burns Fisher bu...@fisher.cc wrote: This obviously requires additional electronics; in particular the battery can't be on the main power bus; we want to be able to isolate it to prevent it charging on every orbit. But that might be good anyway...the ability to isolate the battery might be desirable when the battery does die for good. Presumably if RSC Energia provide the resources to launch ARISSat-2 it'll be the spare ARISSat that was delivered to Moscow along with ARISSat-1 that will be going up ? I guess due to it's current location there'd be little opportunity to make changes to the circuitry ? I've been very impressed by the Slow Scan TV pictures from the satellite. Including SSTV was a good move both in terms of educational outreach and for promoting Amateur Satellites to the wider Amateur Radio community. 73 Trevor M5AKA ___ Sent via AMSAT-BB@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
[amsat-bb] Re: Thinking about ARISSat-2
I note in Tony's article a predicted failure mode for this battery is a short circuit. So, we are very lucky so far in that it appears to be open circuit or has developed a high internal resistance. Regarding different battery chemistries that are suitable for the ISS. - I see in some of the videos produced by the crew that there are a large number of commercial cameras on board for Earth observation. Presumably these are powered by conventional Lithium Ion battery packs. Not exactly rated for the job, but it does show there is more than just Silver/Zinc onboard although there could be a maximum energy limit to the capacity to avoid fire / explosion. (e.g. there's a 100W/hr limit to some cubesat launches) Thanksand still enjoying ARISSat-1 David G0MRF -Original Message- From: Trevor . m5...@yahoo.co.uk To: amsat-bb amsat-bb@amsat.org Sent: Sun, 14 Aug 2011 20:54 Subject: [amsat-bb] Re: Thinking about ARISSat-2 --- On Sun, 14/8/11, Burns Fisher bu...@fisher.cc wrote: This obviously requires additional electronics; in particular the battery can't be on the main power bus; we want to be able to isolate it to prevent it charging on every orbit. But that might be good anyway...the ability to isolate the battery might be desirable when the battery does die for good. Presumably if RSC Energia provide the resources to launch ARISSat-2 it'll be the spare ARISSat that was delivered to Moscow along with ARISSat-1 that will be going up ? I guess due to it's current location there'd be little opportunity to make changes to the circuitry ? I've been very impressed by the Slow Scan TV pictures from the satellite. Including SSTV was a good move both in terms of educational outreach and for promoting Amateur Satellites to the wider Amateur Radio community. 73 Trevor M5AKA ___ Sent via AMSAT-BB@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@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
[amsat-bb] Arissat transponder active over Europe.
Hello, I was listening to a 21:05 utc pass over Europe and got a nice sstv picture and voice telemetry in full power mode. Since I was listening with a FCD I saw activity on the transponder also. I heard EA1JM calling cq. As soon as it went in eclipse I heard nothing anymore untill LOS. 73, Eric. -- Amateur Radio Station ON4HF Eric Knaps Satellite manager UBA Tel. +32472985876 (mobile) http://www.on4hf.be ___ Sent via AMSAT-BB@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
[amsat-bb] Re: Yaesu 5500 rotator
I like about 10 feet of steel tubing mounted as shown here: http://www.g6lvb.com/fibermetalboom.htm 73, Joe kk0sd ___ Sent via AMSAT-BB@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
[amsat-bb] Re: what's flying that does packet
I may be going on an extended adventure which will take me far from the usual communications... As far as SATs go, what's presently flying or near term planned for launch that will serve as a message relay for nts type messages? Better to squeeze your messages down to APRS style one-liners and then you will have several options including direct Email. 1) ISS 145.825 up and down 2) Later this fall FAST1 and FAST2 if releaset to amateur use 3) PCSAT-1 (W3ADO up and down on 145.825) PCSAT-1 is basically dead but one or two packets might get through during mid-day passes rarely. See live downlink on http://pcsat.aprs.org ISS is often on, but sometimes off for days at a time. See current activity at http://www.ariss.net FAST1 will have the same 145.825 uplink but ground stations will have to monitor the UHF downlink. And FAST2 has a 145.825 downlink, but it takes a KW on the uplink, but can be used to get messages to you from fixed stations. I keep begging to get more 145.825 transponders on every bird that flies and has room, so that we can have a continuous presence on there, independent of bird. Bob, WB4APR ___ Sent via AMSAT-BB@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
[amsat-bb] ET - Email Home
As far as SATs go, what's presently flying or near term planned for launch that will serve as a message relay for nts type messages? Since all of the packet digipeating satellties can also transparently carry email, it was interesting the other day when Nick Pugh K5QXJ suggested that not only can APRS satellites EMAIL their telemetry directly to their makers, the controllers can also send commands directly back to the satellites via conventional APRS mail as well! For a satellite to email its telemetry directly to a callsign (for delivery by any worldwide email device) all it has to do is format its telemetry like any other APRS one-line email. Here is the format: PCSATAPRS::EMAIL:wb4...@arrl.net I'm OK: V=12, I=140, T=30C In this case PCSAT sends an email to WB4APR via his ARRL address with the words I'm OK... and then whatever other telemetry the satellite wants to include. This works this way because the global APRS system will take any packet anywhere that is addressed to EMAIL and then wrap it up into standard EMAIL and send it via the internet. Since all IGates on the planet including the ones that are monitioring the satellites automatically do this, then the system is in place. For the satellite operator to send back a command to the satellite this too is aoutamitcally handled in all existing IGate software. If an APRS message is seen anywhere on the planet addressed to any callsign, in this case, the callsign of a small satellite, then any IGate that is IN RANGE of the satellite at any instant (and has heard it) will attempt to transmit that packet onto the satellite uplink in real time. No one has done this yet I dont think, because most Satellite IGates have mostly just been used for downlink, and no one has tried this uplink before. The one thing that would have to change is the TIME-OUT time in the has-been-heard list of the IGates. As it is, an IGate will try to return a message to another callsign if it has been heard in the last 30 minutes or so. For satellites, we would want this to time out after only 10 minutes, since a LEO will be out of range by then. But it is possible. Might be fun. Bob, Wb4APR ___ Sent via AMSAT-BB@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
[amsat-bb] Re: 436CP42UG polarity switch update manual of M2 ???
Juan, The instructions for the polarity switch were written for the shorter version of the antenna. There are some differences in the installation for the 42 element version. Attached to the direct mail is copy of a more recent version than you have. It helps with some, but not all, of the issues. The drawing has the new dimensions for the rear shorting bar. There is a note for the front shorting bar saying Shorting bars remain here at 4.375 inches. Hope this helps. 73s, Alan WA4SCA -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Juan Antonio Fernandez Sent: Sunday, August 14, 2011 1:36 PM To: amsat-bb Subject: [amsat-bb] 436CP42UG polarity switch update manual of M2 ??? In order to update the 436CP42UG M2 antenna with the 436 Polarity Switch, I can read in the 436 Polarity switch update Manual of 11-29-00 in the point 10. Re-install the shorting bars on the rear driven element. Set de bars at the dimension shown on the Antena dimensions sheet. Note: On the 436CP42UG, the rear shorting bars are at a different dimension than the front driven element shorting bars. In the 436CP42 U/G Assembly Manual Rev. 5-20-96 of 10-6-95, in the antenna dimensions sheet, I can read only one dimension for the shorting bars of both driven elements 4,375?. Can somebody help me? Please answers in -bb or at ea4...@amsat.org ___ Sent via AMSAT-BB@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@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
[amsat-bb] ARISSat-1 Battery
Dear Friends, This is speculation but it looks to me like we have had a bit of good luck regarding the battery. Looking at the battery voltage from deployment on... Up until Aug 11, the battery seems to be deteriorating normally with a slight downtrend in the max voltage as expected. But on Aug 11, the battery voltage suddenly rises up to 36 V max and the satellite has started resetting in eclipse. I think the explanation is that the battery experienced a significant event on Aug 11 where it lost the electrolyte in one or more cells. If this is true, the bad news is that it will no longer hold a charge and will not operate in eclipse any more. But the good news is that without electrolyte, it would also stop dendrite growth that causes the eventual battery short circuit. In our ground testing, our test battery failed in the usual way with the battery load increasing until the solar panels could not drive the power bus high enough to run the satellite. But interestingly, several cells also cracked and dumped their electrolyte during this testing. If a cell on the flight battery cracked and dumped its electrolyte BEFORE the shorts were formed, it should stay that way and the satellite may very well continue to operate in the sun until it starts to re-enter. We just need some luck to avoid a bad solar angle that would cause a reset in sunlight. Keep your fingers crossed! :) 73, Tony AA2TX ___ Sent via AMSAT-BB@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
[amsat-bb] Re: [suitsat2] ARISSat-1 Battery
On 8/14/11 3:18 PM, Anthony Monteiro wrote: I think the explanation is that the battery experienced a significant event on Aug 11 where it lost the electrolyte in one or more cells. If this is true, the bad news is that it will no longer hold a charge and will not operate in eclipse any more. I agree with your analysis in that one or more cells seems to have gone open-circuit, or at least greatly reduced in capacity. If you know these batteries and their specific failure mechanisms, then I'd say your lost electrolyte theory is a pretty good one. I never have understood why the dendrites would not be melted by high current as soon as they crossed the gap between the two plates. I assume they grow on the zinc plates as the battery is charged? -Phil ___ Sent via AMSAT-BB@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
[amsat-bb] 2317utc Pass over VK
The 2317UTC 14th August 2011 pass over VK, was Continuous for the whole pass on High Power Last frame shows Battery Voltage at 35.977 73 Colin VK5HI ___ Sent via AMSAT-BB@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
[amsat-bb] Re: Thinking about ARISSat-2
On 8/14/11 11:31 AM, Burns Fisher wrote: What about another strategy? Suppose we did exactly what the battery was spec'ed for: Deep cycles. Almost every type of battery does better with shallow cycles than deep cycles. So this is almost certainly true for Ag/Zn as well. These batteries just aren't designed for many cycles. There is a company (Z-power) working on a Ag/Zn battery with a decent cycle life, intended for use in laptops. They claim the price of silver isn't an impediment because laptop li-ion batteries are also expensive and the silver in their batteries can be reclaimed and reused indefinitely. One advantage they keep citing is the increased safety of a battery with a water-based electrolyte. But newer li-ion batteries have also been developed with different positive plate materials that greatly reduce the inherent fire hazard of these batteries. I don't know what the recent run-up in precious metal prices has done to their business plans. I would like to investigate super/ultracaps for spacecraft use. Their energy densities are low (a Maxwell ultracap the size of a D-cell battery holds about 0.35 watt-hour) but their cycle lives are extremely high: about 500,000 for a 20% degradation in capacity. These could still run a satellite computer through a LEO eclipse, eliminating one of the major problems with a modern satellite whose battery has failed. If a few of these caps could be flown, it might also be possible to run a low power, efficiently coded telemetry beacon through eclipse. But of course the caps would have to be safety rated. They do contain small amounts of potentially hazardous materials, but then again so do Ag/Zn batteries: their electrolytes consist of a strong lye (KOH) solution. It's hard to understand why these batteries would be approved but not NiCd and NiMH as they also use KOH in H2O as their electrolytes. If stored energy is considered a hazard, they could always be launched discharged and charged after deployment. -Phil ___ Sent via AMSAT-BB@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
[amsat-bb] Re: Thinking about ARISSat-2
Thanks, Phil. That's pretty interesting, although I still do wonder about keeping within spec. I especially wonder about Ag/Zn where there is that chemistry change in the middle of the charge cycle; what is the result of perhaps never crossing chemistry change threshold with shallow cycles? I certainly don't know. One of the ARRISat papers I read talked about Ag/Zn being safe when shorted. I suppose that 'safe' is for the battery itself. You would still have a lot of current going through whatever caused the short. I was also intrigued when you mentioned super-caps in a previous posting. The enormous cycle life is really useful...it seems like just keeping the IHU ticking over would be really useful, even if we had no up/downlink capability during eclipse. And of course we could think about having them as a backup after the 'standard' battery died. Interesting to think about... BTW, you may not remember, but we exchanged email many years ago; we were both on one of the USENET boards (sci.space.columbia?) I asked if I could join AMSAT before I got my ham ticket. You were kind enough to encourage me. Well, I did join AMSAT a year or 2 ago, and just this spring got my general ticket too. So thanks for the encouragement even if it was a few decades before I acted on it :-) Burns, W2BFJ On Sun, Aug 14, 2011 at 8:17 PM, Phil Karn k...@philkarn.net wrote: On 8/14/11 11:31 AM, Burns Fisher wrote: What about another strategy? Suppose we did exactly what the battery was spec'ed for: Deep cycles. Almost every type of battery does better with shallow cycles than deep cycles. So this is almost certainly true for Ag/Zn as well. These batteries just aren't designed for many cycles. There is a company (Z-power) working on a Ag/Zn battery with a decent cycle life, intended for use in laptops. They claim the price of silver isn't an impediment because laptop li-ion batteries are also expensive and the silver in their batteries can be reclaimed and reused indefinitely. One advantage they keep citing is the increased safety of a battery with a water-based electrolyte. But newer li-ion batteries have also been developed with different positive plate materials that greatly reduce the inherent fire hazard of these batteries. I don't know what the recent run-up in precious metal prices has done to their business plans. I would like to investigate super/ultracaps for spacecraft use. Their energy densities are low (a Maxwell ultracap the size of a D-cell battery holds about 0.35 watt-hour) but their cycle lives are extremely high: about 500,000 for a 20% degradation in capacity. These could still run a satellite computer through a LEO eclipse, eliminating one of the major problems with a modern satellite whose battery has failed. If a few of these caps could be flown, it might also be possible to run a low power, efficiently coded telemetry beacon through eclipse. But of course the caps would have to be safety rated. They do contain small amounts of potentially hazardous materials, but then again so do Ag/Zn batteries: their electrolytes consist of a strong lye (KOH) solution. It's hard to understand why these batteries would be approved but not NiCd and NiMH as they also use KOH in H2O as their electrolytes. If stored energy is considered a hazard, they could always be launched discharged and charged after deployment. -Phil ___ Sent via AMSAT-BB@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
[amsat-bb] Re: [suitsat2] ARISSat-1 Battery
Hi Phil, I think the initial dendrites DO just spark and open up but eventually the spacer is damaged and the short is enough to bring the cell voltage down. Yes, Zinc dendrites will form also if the battery is overcharged but we should not be able to do that on ARISSat-1 so only the silver ones should be an issue. 73, Tony AA2TX --- On 8/14/2011 6:56 PM, Phil Karn wrote: On 8/14/11 3:18 PM, Anthony Monteiro wrote: I think the explanation is that the battery experienced a significant event on Aug 11 where it lost the electrolyte in one or more cells. If this is true, the bad news is that it will no longer hold a charge and will not operate in eclipse any more. I agree with your analysis in that one or more cells seems to have gone open-circuit, or at least greatly reduced in capacity. If you know these batteries and their specific failure mechanisms, then I'd say your lost electrolyte theory is a pretty good one. I never have understood why the dendrites would not be melted by high current as soon as they crossed the gap between the two plates. I assume they grow on the zinc plates as the battery is charged? -Phil ___ Sent via AMSAT-BB@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
[amsat-bb] 5 IN EM55
Congrats to Matt N8MS award #23 for 5 in EM55 WA4HFN em55 ___ Sent via AMSAT-BB@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
[amsat-bb] Telemetry data - Battery Voltage
Monday, August 15, 0002 UTC ARISSat-1 heard on a high power mode on 145.950 FM with voice telemetry indicating battery voltage 35.93 volts. 73's Mike Schaffer KA3JAW Tampa, Florida EL87 ___ Sent via AMSAT-BB@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
[amsat-bb] Re: Decoding wideband recordings
Quoting Bruce Robertson ve9...@gmail.com: On Sat, Aug 13, 2011 at 7:07 PM, Phil Karn k...@philkarn.net wrote: On 8/10/11 8:24 PM, Tom Azlin N4ZPT wrote: I have a Fun Cube Dongle so I would Phil. Thanks and 73, Tom n4zpt Okay, everybody make and keep your wideband I/Q recordings and I'll work on an enhancement to my demodulation/decoding software to process them. It may not run in real time on slower machines because of the need to search a wider frequency range, but this won't matter if it can work on a recording. I can probably speed things up by including an orbit model in the modem to predict Doppler open-loop, but this will take time to implement and it will still be vulnerable to small errors in the elements and/or your clock, especially around closest approach. So record the date and time of your recordings and the current eleset at that time. For those who have not noted this feature, HDSDR will open a recording scheduler if you right click on the 'record' button. It saves files with UTC time appended. The tricky part is that you have to set the scheduler manually in local time. I've been thinking it would be a nifty hack to make a FCD recorder for a set of satellites using a very small computer, like the BeagleBoard. It seems to me that a daily cron job with 'Predict' would just about do what was necessary, especially now that we have a commandline tool for the FCD. The only part that would take some fiddling would be piping the USB sound card into a file with the proper headers for HDSDR. 73, Bruce VE9QRP I have to agree that HDSDR's recording scheduler is a really neat feature. However, two improvements that I believe can make this even better will be: 1. Although HDSDR can 'start' the receiving based on the start time of a scheduler record, it only stops the recording at the end time of the scheduler. It does not 'stop' the receiving - which will be good to save CPU resources if the SDR is used in an automated unattended satellite tracking station that has the PC shared with other stuff. 2. The need to set the scheduler manually could be eliminated if HDSDR can make use of DDE output of satellite tracking software. For example, in my station I use WISP + WISPDDE for antenna tracking while the FCD is controlled by DK3WN's FCD control software. If HDSDR could use the DDE output of WISP, it can start recording when a satellite name appears, and stop when '*** NO Satellite ***' appears. These are just some of my thoughts to make automatic unattended reception easier, but I must say that DK3WN's FCD control + HDSDR are really great pieces of software. Thank you to all those involved in their development :) 73, Sion, 9M2CQC ___ Sent via AMSAT-BB@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
[amsat-bb] TLM Data captured EN50LM 3:14UTC on 8-15-2011
Received in Normal, IL Grid square EN50LM at 03:14 UTC 8-15-2011 MET = 69 MINUTES IHU Temp = +45 Control Panel Temp = +50 Battery Voltage = 35.77V Battery Current is -4ma ___ Sent via AMSAT-BB@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
[amsat-bb] Re: ARISSat-1 Battery
Kind of a 2011 version of AO-7, but without the stable orbit! 73, Jim KQ6EA On 08/14/2011 10:18 PM, Anthony Monteiro wrote: Dear Friends, This is speculation but it looks to me like we have had a bit of good luck regarding the battery. Looking at the battery voltage from deployment on... Up until Aug 11, the battery seems to be deteriorating normally with a slight downtrend in the max voltage as expected. But on Aug 11, the battery voltage suddenly rises up to 36 V max and the satellite has started resetting in eclipse. I think the explanation is that the battery experienced a significant event on Aug 11 where it lost the electrolyte in one or more cells. If this is true, the bad news is that it will no longer hold a charge and will not operate in eclipse any more. But the good news is that without electrolyte, it would also stop dendrite growth that causes the eventual battery short circuit. In our ground testing, our test battery failed in the usual way with the battery load increasing until the solar panels could not drive the power bus high enough to run the satellite. But interestingly, several cells also cracked and dumped their electrolyte during this testing. If a cell on the flight battery cracked and dumped its electrolyte BEFORE the shorts were formed, it should stay that way and the satellite may very well continue to operate in the sun until it starts to re-enter. We just need some luck to avoid a bad solar angle that would cause a reset in sunlight. Keep your fingers crossed! :) 73, Tony AA2TX ___ Sent via AMSAT-BB@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@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
[amsat-bb] Voice Telemetry just at going eclipse
Dear Sir, Attached are telemetry on FM voice for your study. During telemetry announcement, FM signal sttoped, maybe due to battery voltage down. August 14, 2011 at 1049 UTC, Telemetry on FM voice, just after AOS MET is ?? minutes (I could not copy with QSB/Noise) IHU Temp is plus ?? degrees C (I could not copy with QSB/Noise) Control Panel Temp is plus 61 degrees C Battery Voltage is 36.014 Battery Current is minus 4 milliAmps August 14, 2011 at 1051 UTC, Telemetry on FM voice MET is 69 minutes IHU Temp is plus 48 degrees C Control Panel Temp is plus 61 degrees C Battery Voltage is 36.014 Battery Current is minus 8 milliAmps August 14, 2011 at 1053 UTC, Telemetry on FM voice MET is 72 minutes IHU Temp is plus 48 degrees C Control Panel Temp is plus 6? degrees C Battery Voltage is 31. FM carrier stopped just at this point, after announcement of battery voltage drop down to 31 V. It is not LOS yet. Not calculated, but orbit prediction of this pass is VVN. Satellite goes into eclipse during this pass. I think ARISSAT1 lost solar panel power and stopped soon. I wish this data helps you. Thank you, Fujio JO1XWH ___ Sent via AMSAT-BB@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
[amsat-bb] Re: Arissat transponder active over Europe.
Hi, I have a question, I don't have a SSB rig so I am FM only, wish I could decode telemetry and CW that would be a blast! but as I understand I can't with just FM, or am I wrong? thats OK its a good reson to talk the XYL into letting me buy another radio. Hi Hi. So here is how I am set up. 1.I have my IC28H interfaced to recieve, working on the transmit. with my diemound 510 vert at 50 ft. The rig i tuned to 145.950 MHZ. 2. I use AMsat Predict to track, I am going to go to a program I can track more than one bird at a time with. The nice thing about HRD is the count down to the pass with computer voice, Last I checked HRD was not able to track ARISSsat1. 3. The tracking program runs in the back ground, I am running MMSSTV for SSTV from ARRISsat1 and its running in the back ground as well 4. I use a program called scanner recorder to record the Audio of the pass. you can do this with MMSSTV to but you have to do it manuailly. With scanner recorder once you set it up to record it will do it on its own. So here is my question, I do get the voice telemetry in the message giving the stats on the bird. If I send this in does it count for a voice contact? or just the secret word? On the secret word contest can you enter each time you hear it, or one of them even if its the same word you already logged or only if there diffrent from what you have already logged? hope that makes sence. Also I am confused, Eric, said Since I was listening with a FCD I saw activity on the transponder also. heard EA1JM calling cq. On ARRISSsat1? Live? i did not think we were able to contact each other vie ARISSsat1? I guess that part really confussed me, Eric can you be a little clearer for at the vary least me, if you would please? Thank you. thanks for taking the time to read my post, 73 KC9PXZ Jimmy En43qt Norwalk, Wisconsin - Original Message - From: Eric Knaps, ON4HF on...@telenet.be To: Amsat - BBS amsat-bb@amsat.org Sent: Sunday, August 14, 2011 4:18 PM Subject: [amsat-bb] Arissat transponder active over Europe. Hello, I was listening to a 21:05 utc pass over Europe and got a nice sstv picture and voice telemetry in full power mode. Since I was listening with a FCD I saw activity on the transponder also. I heard EA1JM calling cq. As soon as it went in eclipse I heard nothing anymore untill LOS. 73, Eric. -- Amateur Radio Station ON4HF Eric Knaps Satellite manager UBA Tel. +32472985876 (mobile) http://www.on4hf.be ___ Sent via AMSAT-BB@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
[amsat-bb] ARISSat-1 Telemetry
I caught two sets of voice telemetry on the 04:44z pass over Northern California: MET = 64 IHU temp = 41c Control panel temp = 42c Battery voltage = 35.73v Current = -20ma MET =69 IHU temp = 40c Control panel temp = 42c Battery voltage = 35.74v Current = +0ma Looks like the temperature situation has improved considerably. I also heard the secret word, but it was different than the last time (a few days ago). Is there more than one per language (both were in English)? Greg KO6TH ___ Sent via AMSAT-BB@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
