September 2016 - AMSAT-BB - mailman.amsat.org

(no subject)
by Peter Budnik 01 Sep '16

01 Sep '16

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amsat-bb] [Florida Weak Signal Society] 10 meter satellite PSK
by KO6TZ Bob 01 Sep '16

01 Sep '16

From the text that you copied, I am certain what you saw was my CQ call thru the satellite NO-84. The macro I use is as follows; { "text": " cq cq satellite MYCALL MYCALL " } This text would be sent continuously while calling CQ. The satellite users rely on multi decoders for the downlink PSK-31. Each side of the contact or Keyboard QSO would be at a different frequency on the waterfall. As Bob, WB4APR, mentioned, the PSK-31 signal is Doppler shifted by the program I use to transmit. This signal will be skewed to the point it will be hard copy to a terrestrial station. The opposite is also true, I am usually unable to copy more than short segment of terrestrial station. I hope this was helpful. Bob KO6TZ DM13rw Its more interesting that that too. The reason the 28.118 MHz user uplink has Doppler on it, is because he is using N0SM's pre-compensated Doppler uplink software. See http://aprs.org/psat.html With this software, you can run your normal PSK31 software for monitoring the 435.350 MHz FM downlink and run full duplex with N0SM's TX software for your 28.1xx uplink. And the uplink is pre-shifted for Doppler so that everyone seeing the downlink will see your signal constant. And since it is full duplex, you can be typing with comments to everyone in the passband at the same time while watching their comments too. Bob, WB4APR -----Original Message----- From: AMSAT-BB [mailto:amsat-bb-bounces at amsat.org] On Behalf Of Andrew Glasbrenner Sent: Thursday, September 01, 2016 3:10 PM To: Florida Weak Signal Society Cc: Bob Cutter via Amsat-Bb; Don Hawbaker Subject: Re: [amsat-bb] [Florida Weak Signal Society] 10 meter satellite PSK NO-84 has a PSK transponder, 10m up and UHF FM down. 73, Drew KO4MA > On Sep 1, 2016, at 2:57 PM, Don Hawbaker via FLWSS <flwss at flwss.net> wrote: > > I was hearing a station on about 28118 KHz last night running PSK31 calling CQ satellite with drift, but since it says CQ satellite, I guess it could have been Doppler shift. Anybody know how this could happen? > _______________________________________________ > Website http://www.flwss.net > > FLWSS mailing list > FLWSS at flwss.net > http://flwss.net/mailman/listinfo/flwss_flwss.net

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Satellite Radios
by Bill Acito 01 Sep '16

01 Sep '16

Icom 820H, 821 Bill W1PA

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Re: [amsat-bb] [Florida Weak Signal Society] 10 meter satellite PSK
by Andrew Glasbrenner 01 Sep '16

01 Sep '16

NO-84 has a PSK transponder, 10m up and UHF FM down. 73, Drew KO4MA > On Sep 1, 2016, at 2:57 PM, Don Hawbaker via FLWSS <flwss(a)flwss.net> wrote: > > I was hearing a station on about 28118 KHz last night running PSK31 calling CQ satellite with drift, but since it says CQ satellite, I guess it could have been Doppler shift. Anybody know how this could happen? > _______________________________________________ > Website http://www.flwss.net > > FLWSS mailing list > FLWSS(a)flwss.net > http://flwss.net/mailman/listinfo/flwss_flwss.net

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More On Falcon 9 Explosion
by B J 01 Sep '16

01 Sep '16

http://www.parabolicarc.com/2016/09/01/elon-musk-falcon-9-explosion-origina… Looking at the video of the explosion: http://www.parabolicarc.com/2016/09/01/video-spacex-falcon-9-explosion/ it appeared to me that the flash was centred near where the lines were attached to the upper stage. 73s Bernhard VA6BMJ @ DO33FL

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(no subject)
by jeffory broughton 01 Sep '16

01 Sep '16

I have had several FT 847 radios.Great low cost choice and works well with satpc32.However ,for just a few dollars More get a used IC910. Much better rx sens with a lower noise figure.Also REAL DNR circuitry.Make listening for long periods a pleasure,not so exhausting. Also if you compare the specs of the IC910 and IC 9100 uhf and vhf SECTIONS, you will see they are IDENTICAL! jeff broughton

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SpaceX Launch Pad Test Explosion
by Alan 01 Sep '16

01 Sep '16

http://motherboard.vice.com/read/spacex-loses-rocket-200-million-satellite-… 73s, Alan WA4SCA ----------------------------------- Keep Calm and Carry On

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WD9EWK @ DM23/DM24 on Saturday (3 September)
by Patrick STODDARD (WD9EWK/VA7EWK) 01 Sep '16

01 Sep '16

Hi! I am planning a quick road trip on Saturday (3 September), but not to a National Parks on the Air site like I have been doing during this summer. Saturday's road trip will be to the DM23/DM24 grid boundary in western Arizona. This location is north of the junction of Arizona routes 72 and 95, southeast of Parker. I have visited this location many times over the past few years, and there is a paved road that leads up to the grid boundary (north of the intersection, south of railroad tracks). I plan on being out there around 1630 UTC, which would be in time for an AO-73 pass. If not, I may be able to try a very shallow FO-29 pass just before 1700 UTC. I definitely plan on working the AO-85 passes at 1900 and 2040 UTC, among other passes. I will use APRS while on the road Saturday, with the call sign WD9EWK-9. My travels, and my location at the grid boundary, should be visible on web sites like http://aprs.fi/WD9EWK-9 (among others). There is good APRS coverage in central and western Arizona, thanks to the mountaintop digipeaters that cover much of this state. I won't run the APRS radio when on the satellites, unless I'm working digipeaters on NO-84 or (if it is on) the ISS. Along with APRS, I will send updates during the day using my @WD9EWK Twitter feed. If you do not use Twitter, you can still see my Twitter activity using a web browser at: http://twitter.com/WD9EWK I will upload my log to Logbook of the World after this trip. If anyone would like to receive a QSL card for working WD9EWK at the DM23/DM24 grid boundary, please e-mail me directly with the QSO details. If you are in the log, I will be happy to send you a QSL card. Thanks in advance, and 73! Patrick WD9EWK/VA7EWK http://www.wd9ewk.net/ Twitter: @WD9EWK

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Satellite Radios
by Gerald Payton 01 Sep '16

01 Sep '16

Thanks ALL of you giving you comments and suggestions. I kept a tally sheet to see which showed up the most. Of course, it's like "which car do you like question." (smile) Seriously, your answers have been helpful. Generally, I like a "table top" type radio as compared to the smaller mobile units. That's just MY "druthers." Zach, I appreciate you input on the FunCube Pro +. I do not have one, but have played with the other cheaper types and several software packages. Currently, I have settled with a SDRPlay RSP. What is the advantage(s) of the FunCube dongle? Again, thanks to everyone chipping in with their 2 cents. It helps me, maybe others lurking. 73, Jerry AB5R

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Satellite Radios
by Gerald Payton 01 Sep '16

01 Sep '16

EXCLUDING the radios used for portable and with handheld antennas, what are the radios used for FIXED operations? I have my IC-2730, which I understand can be used, but wonder what other radio options are there out there. Are the older second-hand radios (hard to find) the answer? Any comments appreciated. 73, Jerry AB5R

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