August 2014 - AMSAT-BB - mailman.amsat.org

ISS - SSTV
by Clive G7SVI 28 Aug '14

28 Aug '14

This was posted on the ARISS Blog http://ariss-sstv.blogspot.co.uk/ Aug 27 report The SSTV transmissions occurred on schedule and even occurred well after the planned termination time of 13:00 UTC (after 17:00 UTC). The new cable appears to have solved the constant carrier issue but now the audio from the program is not being transmitted. The end result for the day was no images but several well timed carriers that lasted for 180 seconds. 73s Clive - G7SVI

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W1AW/7 Arizona activity, after two nights...
by Patrick STODDARD (WD9EWK/VA7EWK) 28 Aug '14

28 Aug '14

Hi! I don't have many QSOs in the log, but it has been fun to put W1AW/7 on the satellites once again. I'm trying to work at least one FO-29 pass and one or two AO-73 passes on weeknights. Unfortunately, SO-50 is not passing by in the evenings, but will be fine on the holiday weekend with the early afternoon passes. On FO-29 earlier tonight, I worked Sawson KG6NUB in northern California. I haven't heard him on the satellites in a long time. Sawson reported that he was transmitting with an FT-857, receiving with a FUNcube Dongle, and both were connected to his Arrow Yagi. The interesting part of all this - Sawson had it all in his living room! Tomorrow evening, I will try to get on the FO-29 pass at 0112 UTC, followed by at least the AO-73 pass at 0430 UTC. If there is any interest from west- coast stations to work W1AW/7 on the 0607 UTC pass, please let me know. Friday evening will see similar activity, and on Saturday I am looking to start working passes in the morning and try for as many passes as I can get on until the evening - especially the SO-50 passes in FM. I'm hoping AO-73 will have its transponder all day Saturday and Sunday, for more chances to get W1AW/7 on the satellites during the weekend. Time for bed... 73! Patrick WD9EWK/VA7EWK http://www.wd9ewk.net/

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W1AW/8 ARRL Centennial Ohio Satellite Operation
by fl＠papays.com 27 Aug '14

27 Aug '14

Thanks to everyone who worked me as W1AW/8 over the past week. I made 221 qso's with 93 unique callsigns and 83 grids. DX included G, XE, GM, PV, OZ, VE, OY, CO, EI. 73, John K8YSE

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Western Grid Expedition by K8YSE
by fl＠papays.com 27 Aug '14

27 Aug '14

I will be embarking on a grid expedition to some Western States beginning shortly after Labor Day. The grids that I will definitely operate from are: CN93 CN96 DN03 DN05 DN07 DN14 DN15 DN20 DN21 DN22 DN23 DN48 DN54 DN68 DN76 DN78 DM38 DM48 DM49 There will be many other grids on the route but I'll only operate from them if the situation permits. This is a tent camping trip and the weather will play a role in when and if I can operate. The first grid will be DN54 although there may be one or two before that depending on the timing. I will be using an Icom 910H and an Arrow or Elk antenna rather than the setup in my truck that was used on the Lake Superior Expedition. Setup time and weather will be a factor. I don't anticipate operating in darkness although it may be possible at campsites. I will be using computer control on the linear birds. We don't have many satellites now and since AO-7 is now switching between Mode A and B, it will only be available every other day. The primary birds will be FO-29 and SO-50. There may be some AO-73 but not likely. If AO-7 is weak, I may operate on CW on that bird only. I will be trackable as k8yse-9 (3g/4g) and/or k8yse-12 on RF. Sometime in October I will plan a short trip over to DM63/64 if anyone needs those grids. And on January 1st, 2015, I will operate at least one pass from FM13 in the afternoon. I don't anticipate doing LOTW for this expedition. Cards should be sent direct. If you have many contacts to confirm, a log excerpt can be sent that I can sign and return to you. Please make sure you indicate which grid I was in for each qso. I plan to record all passes and log on paper as well. QSO's will be confirmed sometime in December. SO-50 is our only FM bird now. It is difficult to hear and suffers from QRM. I'm sure you have witnessed a station operating from a rare grid that has had trouble making qso's. Sometimes others are not hearing the bird but are still calling; sometimes others are not aware that someone is operating from a rare grid and they will call someone that they have worked many times. You can always work a regular when there is low activity but you and others may only have one chance to work a rare grid. Please give those operating in a remote grid some space to work the bird. It is not a matter of how much power you run, but rather a matter of courtesy. Another issue we have on SO-50 is QRM from simplex users. You may hear a word or two from them at the end of a valid satellite transmission. They are often very strong and can prevent us from getting into a satellite. There is not much we can do about this problem but if you hear someone on 145.85 locally, please advise them about the ARRL Bandplan that reserves 145.8-146.0 for satellite inputs and ask them to choose another frequency for their simplex activity. Since they are not running 67 Hz PL, we only hear them at the tail end of a valid satellite transmission before the squelch closes. I hope to work many of you on this trip. Good Luck. 73, John K8YSE

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iss sstv ????
by F5GVA Claude 27 Aug '14

27 Aug '14

Hi all third pass of the day and still no audio signal. The carrier is very strong 59+60 db. Curious ! someone there any information ? 73 Claude F5GVA/77-JN18IT Member : Amsat 780-REF 34929-CDXC 1480-EPC 16293-ERC 641-30MDG 5772-F6KOP TEAM 56-BCS 886-DMC 6992-BDM 4171 Satellite Amateur Radio Station Site web : http://pagesperso-orange.fr/f5gva/

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SATPC32 Problem tracking ISS
by wa7eth＠frontier.com 27 Aug '14

27 Aug '14

Thanks to everyone for the assistance in solving my problem tracking the ISS with SATPC32. I discovered it was an operator problem on my end (somewhat digitally challenged here ! ! !) and now all is well. I appreciate everyone's help and I have learned a lot. . 73'...Ed WA7ETH

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ISS SSTV Aug 27 1100-1300 GMT
by M5AKA 27 Aug '14

27 Aug '14

The PD180 SSTV transmissions from the International Space Station on 145.800 MHz FM should take place during the 1100-1300 GMT orbit on Wednesday, August 27, see http://amsat-uk.org/2014/08/23/iss-sstv-august-27/ When the ISS is in range of London you should also be able to receive the transmissions online using the SUWS WebSDR, further details at http://amsat-uk.org/2014/08/15/suws-websdr-moves-to-new-site/ ---- Trevor M5AKA AMSAT-UK Website http://amsat-uk.org/ Facebook https://www.facebook.com/amsatuk Twitter https://twitter.com/AMSAT_UK ----

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ISS passage 15h37 TU
by F5GVA Claude 27 Aug '14

27 Aug '14

Hi all In this passage : very strong carrier 59+60 but still no audio signal It lacks the BF cable? it's a shame ! 73 Claude F5GVA/77-JN18IT Member : Amsat 780-REF 34929-CDXC 1480-EPC 16293-ERC 641-30MDG 5772-F6KOP TEAM 56-BCS 886-DMC 6992-BDM 4171 Satellite Amateur Radio Station Site web : http://pagesperso-orange.fr/f5gva/

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DCC Proceedings Abstracts Announced - 2014 ARRL/TAPR Digital Communications Conference Austin, TX September 5-7, 2014
by Mark Thompson 27 Aug '14

27 Aug '14

http://www.tapr.org/pub_dcc33.html DCC Proceedings Abstracts: 33rd ARRL and TAPR Digital Communications Conference September 5-7, 2014 ________________________________ High-Speed Wireless Networking in the UHF and Microwave Bands by David Bern, W2LNX and Keith Elkin, KB3TCB Abstract: This paper discusses building an amateur radio wireless network using commercial off the shelf wireless networking equipment that is currently available. As an example, four Ubiquiti NanoStation M3 3.4 GHz digital radios are used to assemble a demonstration network of two wireless network links that operate on two different frequencies. In conclusion, the paper invites the amateur radio community to build a nationwide highspeed amateur radio wireless backbone network to connect all local amateur radio area community wireless networks. Proceedings Paper Clarifying the Amateur Bell 202 Modem by Kenneth W. Finnegan, W6KWF and Bridget Benson, PhD The Stream Control Transmission Protocol (SCTP) and Its Potential for Amateur Radio by Eduardo Gonzalez , Dr Stan McClellan and Dr Wuxu Peng SDR-based DATV-Express Exciter for Digital-ATV by Ken Konechy, W6HHC A Radioteletype Over-Sampling Software Decoder for Amateur Radio by Joseph J. Roby, Jr, K0JJR An HF Frequency-Division Multiplex (FDM) Modem by Steven Sampson, K5OKC Modulation - Demodulation Software Radio by Alex Schwarz VE7DXW and Guy Roels ON6MU Installing a LIF port into the FT-950 transceiver by Alex Schwarz, VE7DXW Installing a LIF port into the IC-756ProIII transceiver by Alex Schwarz, VE7DXW The European HAMNET - A Large Scale High Speed Radio Network by Jann Traschewski, DG8NGN Implementation of Basic Analog and Digital Modulation Schemes using a SDR Platform by Jose M. Valencia and Omar H. Longoria

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ISS UK Passes - SSTV
by David Barber 27 Aug '14

27 Aug '14

UK passes today at 10.48utc, 12.23utc & 14.00utc. Very strong carrier at 3 minute intervals, duration as expected for proposed mode of transmission but no modulation. David Barber G8OQW ********

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