[ans] ANS-217 AMSAT News Service Weekly Bulletins

JoAnne Maenpaa k9jkm at comcast.net
Sat Aug 4 18:12:46 PDT 2007


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-editor at amsat.org

******************** AMSAT 2007 Space Symposium **************************

The Wireless Association of South Hills Amateur Radio Club announces the
2007 AMSAT Space Symposium will be held at the Pittsburgh Airport Marriott 
Hotel on Friday, October 26 through Sunday, October 28, 2007.

The AMSAT web team has posted informational pages on the AMSAT web site.
You can find the announcement with many links at:


In this edition:

* Central States VHF Conference Award
* AMSAT EAGLE Design, Construction, and Testing
* AO-51 First L-SSB Up / S-FM Down QSO
* Satellite Shorts From All Over
* AMSAT Area Coordinators Wanted
* ARISS Status Report for the Week of July 30, 2007

SB SAT @ AMSAT $ANS-217.01
Central States VHF Conference Award

AMSAT News Service Bulletin 217.01
August 5, 2007
BID: $ANS-217.01

The annual Central States VHF Society meeting in San Antonio, Texas
included technical presentations, a technical achievement award to 
Bob, N4HY, and a generous financial contribution to AMSAT.

Among the many AMSAT folks in attendance were W4MO, W7LB, W5IU, W3XO, 
N4HY, K5SDR, W5SXD, N6TX, KL7UW and K3IO. There were no satellite spe-
cific papers presented this year, but the world of DSP and SDR was 
very much present. K5SDR presented his new SDR5000 radio. KL7UW 
(with the SDR-IQ) and W5LUA (with the Softrock-40) reported on the 
use of SDR receivers for various VHF/UHF/Microwave tasks.

AMSAT highlights of the meeting came at Saturday Night's banquet. 
Tom, K3IO accepted a financial contribution from CSVHFS for AMSAT.

A special moment of the meeting came when Bob McGwier, N4HY, AMSAT 
BoD member and VP Engineering  was presented the 2007 John Chambers
Memorial Award for technical achievement, recognizing his many SDR 
and AMSAT activities. Bob joins previous AMSAT Chambers Award recipients

Bob's reaction, "I have had great partners in all of my work. I am 
grateful for all of the ideas, support, trust, complaints, advice that 
have flown freely from the SDR, Flex groups, TAPR, ARRL, and of course, 
AMSAT.  The John Chambers award is one I am extremely proud to have 
as all of my engineering mentors in amateur radio have received it 
including, but not limited to, Tom and Jan King."

[ANS thanks Tom, K3IO for the above information]


SB SAT @ AMSAT $ANS-217.02
AMSAT EAGLE Design, Construction, and Testing

AMSAT News Service Bulletin 217.02
August 5, 2007
BID: $ANS-217.02

Jim Sanford, WB4GCS, AMSAT Eagle's Project Manager recognized sig-
nificant contributions to the EAGLE satellite design.  Jim wrote,
"Some of the folks recruited since or around last year's Symposium 
have done GREAT things for Eagle.  I'm referring to Juan Rivera, WA6HTP,
and the Project Oscar team tht he assembled.  They have purchased 
materials for, constructed, and are testing the U-band receiver. This 
process has taught us many thing about our PROCESSES and designs, 
as well as done great things for the particular project at hand. 

Jim continued, "Bill Ress, N6GHZ is another newcomer who has done 
great things.  At a time when EAGLE's Advanced Communication Package is 
still in the conceptual design stage, Bill took it upon himself to 
design an S2-band receiver and built it.  He did so on his own dime 
and did it in a way that lends itself to experimentation - modularized

Bob, N4HY, added, "Marc Franco, N2UO and Al Katz, K2UYH have delivered 
a paper to an international audience on our 145 MHz amplifier design. 
It is HUGELY efficient.  Based on Cree Semiconductor amplifiers, it will 
be state of the art.  We will be able to produce the most efficient 
and most linear HELAPS we have ever produced based on this work.  
Marc is the lead on this development and is now designing the modulator 
and driver stages."

Also Bob, N4HY and Tom, K3IO are working with development tools and new 
development boards to get the pieces of the SDX designed/simulated to 
deliver the signals needed for the HELAPS nonlinear channel and the 

Lou McFadin, W5DID and his compatriots have made good progress on critical 
system elements for the best charge regulation system we have ever flown.

One of the discoveries arising out of testing the UHF receiver design is 
a recognition that we may need to redesign the switching power supply 
on the CAN-Do! widgets.  So, I'm seeking a switching power supply 
designer.  That individual will be faced with a wide range of load 
currents (tens of mA to A), very small "real estate" on the board, and 
demanding EMI requirements.  Jim summarized, "Anyone interested in 
this exciting project should contact me directly and immediately."
(wb4gcs at amsat.org).

At the AMSAT Symposium in October, papers will be presented on the U Rx, 
the S2 Rx, and on the V-band power amp.

[ANS thanks Jim, WB4GCS for the above information]


SB SAT @ AMSAT $ANS-217.03
AO-51 First L-SSB Up / S-FM Down QSO

AMSAT News Service Bulletin 217.03
August 5, 2007
BID: $ANS-217.03

During the first week of August, AO-51 was in the L/S mode of operation.
Gould, WA4SXM, AO-51 Command station noted, "Due to a commnd station error 
AO-51 first came up in L (USB) uplink / S (FM) downlink mode for a day.  
Nevertheless Ib, OZ1MY determined the correct modulation scheme and had 
a QSO with Willi, OE6AG this afternoon.  Probably a first for this mode."
AO-51 was then put in the FM mode for the uplink on its next pass over a
command station.  This demonstrated the versatile configuration of this
satellite's radio equipment.

Drew, KO4MA, AMSAT VP-Operations published the AO-51 operating schedule
for the remainder of August:


August 5 - August 20 FM Repeater, V/U

Uplink:   145.920 Mhz FM, NO PL Tone
Downlink: 435.300 Mhz FM
Downlink: 435.150 Mhz FM, 9k6 Telemetry only


August 20 - August 27 FM Repeater, V/U and FM Repeater, L/U

FM Repeater, V/U
Uplink:   145.920 Mhz FM, NO PL Tone
Downlink: 435.300 Mhz FM

FM Repeater, L/U
Uplink:  1268.700 Mhz FM, NO PL Tone
Downlink: 435.150 Mhz FM


August 27 - August 31 FM Repeater, V/U
Uplink:   145.920 Mhz FM, NO PL Tone
Downlink: 435.300 Mhz FM
Downlink: 435.150 Mhz FM, 9k6 Telemetry only

Please send your requests for September to ao51-modes at amsat.org for 

[ANS thanks Gould, WA4SXM, and Drew, KO4MA for the above information]


SB SAT @ AMSAT $ANS-217.04
Satellite Shorts From All Over

AMSAT News Service Bulletin 217.04
August 5, 2007
BID: $ANS-217.04

+ Dave, ZL2AMD, has done a major revision of the TS-2000, IC-821, 
  and IC-910 interfaces in Uni_Trac. Release file UP3_115 is available
  on the www.etelectronics.com website.

+ John, LA2QAA, AO-7 Resource Page Log Administrator noted that as of
  Monday, July 30 there were several Stateside - Europe contacts. The
  prefixes included K9, G1, DM, F3, EA, LA, UA0, RA3, GJ, I6, HA, OH.

+ CQ Editor Rich Moseson, W2VU says in preparation of the 50th anniver-
  sary of the launch of Sputnik coming up in October, CQ Magazine is
  planning to collect a representative sampling of radio amateur's 
  first-hand recollections to weave into an article for the October
  issue. Plus, we'd like to hear if this experience had a significant 
  impact on your choice of careers, etc. - in short, did listening for 
  Sputnik change your life? If so, how?  Please respond as soon as 
  possible by e-mail directly to a special mailbox at CQ Magazine:
  sputnik at cq-amateur-radio.com.

[ANS thanks everyone for the above information]


SB SAT @ AMSAT $ANS-217.05
AMSAT Area Coordinators Wanted

AMSAT News Service Bulletin 217.05
August 5, 2007
BID: $ANS-217.05

If you are an experienced satellite operator and would like to give 
back to AMSAT, here is a great opportunity for you to do that.

Gould, WA4SXM, Director Field Operations says, "I am looking for AMSAT 
members that would like to actively represent AMSAT in the field by 
giving talks to local clubs or schools, satellite demonstrations or 
host an AMSAT table at local hamfests. We have a number of resources 
to help you do an AMSAT booth or make a presentation or demonstration.  
If this sounds interesting, please send me an email and I will send 
you more information about the requirements and expectations."

Gould adds a final note, "To all current Area Coordinators: I sent out 
an AC Newsletter Friday Aug 3, if you didn't receive it please go to 
your FOSS account and update your email information.  You can also 
download the Newsletter there.  If you have a problem with your FOSS 
account, send me an email and we will fix that.

[ANS thanks Gould, WA4SXM for the above information]


SB SAT @ AMSAT $ANS-217.06
ARISS Status Report for the Week of July 30, 2007

AMSAT News Service Bulletin 217.06
August 5, 2007
BID: $ANS-217.06

1. ARISS Contact with Challenger Learning Center 

On Wednesday, July 25, children attending the Challenger Learning Center 
of Lucas County, Ohio experienced an ARISS contact.  Astronaut Clay 
Anderson, KD5PLA, answered 26 questions posed to him by the 16 students 
as a crowd of approximately 80 gathered to watch. 

2. Contact With the 21st World Scout Jamboree

An ARISS contact took place with the 21st World Scout Jamboree in Chelms-
ford, England on August 4. A Special Event Station, GB100J, will operate
at the Jamboree from July 27 to August 8, 2007. Approximately 40,000 scouts
from 200 countries are expected to attend this event to celebrate the 100th 
anniversary of scouting, which originated in England. The audio was broad-
cast on the Jamboree FM Radio Station and webcast on the radio station's 

3. Crew Debrief Held

On Tuesday, July 24, an ARISS crew debrief was held with Sunita Williams, 
KD5PLB. Williams, an ISS crew member during Expeditions 14 and 15, 
completed 33 ARISS contacts with school children around the world while 
board the ISS. She provided the ARISS team with positive feedback on her 
participation in the program.

[ANS thanks Carol, KB3LKI for the above information]


In addition to regular membership, AMSAT offers membership in the
President's Club. Members of the President's Club, as sustaining donors
to AMSAT Project Funds, will be eligible to receive additional benefits.
Application forms are available from the AMSAT Office.

This week's ANS Editor,
JoAnne Maenpaa, K9JKM
K9JKM at amsat dot org

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