AMSAT-BB March 2019

143 participants
198 discussions

Re: [amsat-bb] Greetings from India
by Rajesh Vagadia - VU2EXP 31 Mar '19

31 Mar '19

Dear OM Umesh KGVUG/VU2HUZ, Many thanks for sharing your radio satellite activities, experience till date & efforts you putup for hobby, just brilliant. You rightly said "working with satellite is exciting for both young and old hams alike"! Will look for your help whenever needed from your huge experience. Will be connected. 73's Rajesh VU2EXP ML52jh On Sun 31 Mar, 2019, 1:18 AM k6vug(a)sbcglobal.net, <k6vug(a)sbcglobal.net> wrote: > Hello Rajesh, > > How are you. It is good to know you are leading the efforts of > AMSAT-INDIA. As you have seen AMSAT-BB is a resource for specific topics > like using satellites, radios, antennas, rotators and good practices and > tips for beginners. > > Just to give you an idea, I have been involved with amateur satellites > since 2011 and have learned quite a lot about them. I have built several > antennas suitable for satellite work and give presentations and > demonstrations at local clubs and public events like field-day etc. > Needless to say working with satellites is exciting for boht young and old > hams alike. I also had the opportunity to work with some students in India > and abroad for their school/college projects that involved amateur and NOAA > weather satellites. Please don't misunderstand, this not about me, I have > been a ham since 1976 (VU2HUZ) and I enjoy helping others enjoy the hobby > as well. > > Science and technology is an integral part of education in India, however > I also understand the restrictions, both financial and strict regulations, > compared to western countries. I would like to offer my help in any way I > can. > > > Best 73! > Umesh Ghodke > K6VUG > > > > > > > > On Saturday, March 30, 2019, 10:11:39 AM PDT, Rajesh Vagadia - VU2EXP < > vu2exp(a)gmail.com> wrote: > > > Hello Sat friends, > > I am VU2EXP active ham from India. QRV in hf/vhf/uhf digital & satellite. > I enjoy doing awareness/promotional > activities for amateur radio & satellites in west India zone as regional > coordinator of AMSAT-INDIA. > > Would like to learn & discuss about radio satellites on this wonderful > platform. > > Thanks & 73's > > Rajesh P. Vagadia - VU2EXP > ML52jh > >

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Re: [amsat-bb] AISAT APRS payload on PS4 Platform
by Nitin Muttin 31 Mar '19

31 Mar '19

Super, Thanks Pedro 73 Nitin [VU3TYG] -------------------------------------------- On Sun, 31/3/19, Pedro Converso <pconver(a)gmail.com> wrote: Subject: Re: [amsat-bb] AISAT APRS payload on PS4 Platform To: "Nitin Muttin" <vu3tyg(a)yahoo.co.in> Cc: "AMSAT BB" <amsat-bb(a)amsat.org> Date: Sunday, 31 March, 2019, 5:01 AM Thanks Nitin, For early hunters passes at http://amsat.org.ar/pass?satx=aisa1 Good Luck on launch and thanks for this new bird. 73, lu7abf, Pedro On 3/30/19, Nitin Muttin via AMSAT-BB <amsat-bb(a)amsat.org> wrote: > Hello All, > An APRS payload from AMSAT INDIA will be flown on PSLV C45. The launch is > scheduled on April 1st 2019 at 09:27 IST / 03:57 UTC. The payload will be > powered on approximately over Sweden,Norway,Denmark, Finland, Poland and > Moscow.We request stations at these locations to report the first signals > (145.825 Mhz) from the payload.We also request the Amateur Radio fraternity > worldwide to use the payload and Satgates to feed the traffic. More details > about this unique project is available at http://www.amsatindia.org > The prelaunch TLE are also available for download > on http://www.amsatindia.org > 73 > Nitin [VU3TYG]Secretary, AMSAT INDIA > _______________________________________________ > 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: https://www.amsat.org/mailman/listinfo/amsat-bb >

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AMSAT News Service ANS-090 Weekly News Bulletin March 31, 2019
by Frank Karnauskas 30 Mar '19

30 Mar '19

73, Frank FRANK W. KARNAUSKAS, N1UW ARRL MINNESOTA AFFILIATED CLUB COORDINATOR AMSAT NEWS SERVICE ROTATING EDITOR 1402 SUMMIT SHORES DR. BURNSVILLE, MN 55306 N1UW(a)GOKARNS.com 612-644-9174

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Today's Rocket Lab launch
by Wendy and Terry Osborne 29 Mar '19

29 Mar '19

Launch successful See: https://www.youtube.com/watch?time_continue=5&v=OaUSf0D95vs Watch out for the next launch in April. 73, Terry Osborne ZL2BAC

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Rove starts tomorrow!
by aa8ch 29 Mar '19

29 Mar '19

Check out @charliehotel10 on twitter. Email works also. Hope to get you in the log if you need these grids! 73Chris AA8CH

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Re: [amsat-bb] Diplexer, Arrow ant, 2 handhelds question
by skristof＠etczone.com 29 Mar '19

29 Mar '19

This worked! I put the filter on the 70 cm side of the "rig" and I was full duplex on the next SO-50 pass. Thanks for the great tip. I also appreciate you roving to a grid line and giving several of us a "twofer". Steve AI9IN On 2019-03-26 10:07, Stephen E. Belter wrote: > Steve, > > *If* the problem is 3rd harmonics from the 2 m transmitter, then what you did should have helped. Adding a 50-ohm terminator might improve the attenuation of the 3rd harmonic. > > A more common problem is that the 70 cm receiver can't handle the 2 m transmitted signal because the receiver doesn't attenuate the 2 m signal sufficiently. (The AGC on the radio hears the 2 m signal, attenuates the whole 70 cm band, and you don't hear the satellite.) By using the Arrow diplexer as a 2 m band reject filter, you may solve your problem. > > For a better explanation see, Tony AA2TX's article here: > https://www.amsat.org/a-simple-desense-filter-for-mode-j-satellites/ > > So try your experiment again, but connect the antenna end of the diplexer to the 70 cm antenna and the 70 cm radio end of the diplexer to your receiver. > > 73, Steve N9IP > -- > Steve Belter, seb(a)wintek.com > > On 3/26/19, 12:18 PM, "AMSAT-BB on behalf of skristof(a)etczone.com" <amsat-bb-bounces(a)amsat.org on behalf of skristof(a)etczone.com> wrote: > > Today, on the SO-50 pass, I tried using the Arrow diplexer (duplexer?) > to enable full-duplex using two handhelds. As most on this forum know, > if you use two handhelds with the Arrow antenna, the third harmonic of > the 2m uplink will desense the 70cm handheld, so you can't hear > yourself. > > So, I hooked up what is normally the antenna end of the diplexer to the > 2m uplink radio and the 2m radio end of the diplexer to the 2m part of > the Arrow antenna. My hope was that this would suppress the third > harmonic of the 2m uplink enough so that it wouldn't desense the 70cm > handheld. The 70cm radio end of the diplexer was left unconnected. > > It didn't seem to work. I made contacts but I still didn't hear myself > on 70cm. > > Just wondering if anyone else has tried this and what results you got. > > Steve AI9IN > > EM79ji > _______________________________________________ > 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: https://www.amsat.org/mailman/listinfo/amsat-bb

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SatPC32 and windows 10
by Mike 29 Mar '19

29 Mar '19

I was successfully using Windows 7 to run SatPC32 and suffered a catastrophic failure of the computer so I had to replace it. I replaced it with a used Windows 10 computer. I can install SatPC32 and get it set up, as best as i remember how to do. Things seem to be working except for the doppler tracking of the CAT control. I know SatPC is talking to my TS-2000 because it goes into satellite mode when I start SatPC. Also, I can click on the CW tab and it changes to CW and back when I deselect it. But no doppler tracking control. I'm at a loss as what to do at this point. Thanks for any help. Mike Stansberry, K0TER

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Diwata-2 schedule
by Nicholas Mahr KE8AKW 29 Mar '19

29 Mar '19

I will be listening for Diwata-2 at 18:55 UTC (overhead pass) on the scheduled time it will be on this evening which is 18:37-19:27 UTC. It is also on in the middle of the night around 1:30 AM EST if you want to stay up late. JA0CAW on twitter lists the full schedules and updates on Diwata-2 so watch his page if you want to know the latest. Looking forward to this new satellite and continuous operations! 73 Nick KE8AKW

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Diwata-2 schedule
by David Bartholomew 29 Mar '19

29 Mar '19

The Diwata-2 FM satellite is apparently on, sometimes. Are they enabling it for just specific passes or single orbits at a time, or will it be usable from the USA? https://twitter.com/JA0CAW/status/1111496822004973568 More FM sats to use can't be a bad thing. Dave AD7DB

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Greetings from India
by Rajesh Vagadia - VU2EXP 29 Mar '19

29 Mar '19

Hello Sat friends, I am VU2EXP active ham from India. QRV in hf/vhf/uhf digital & satellite. I enjoy doing awareness/promotional activities for amateur radio & satellites in west India zone as regional coordinator of AMSAT-INDIA. Would like to learn & discuss about radio satellites on this wonderful platform. Thanks & 73's Rajesh P. Vagadia - VU2EXP ML52jh

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AMSAT-BB March 2019