OpenBCM V1.07b12 (Linux)

Packet Radio Mailbox

IW8PGT

[Mendicino(CS)-Italy]

 Login: GUEST





  
CX2SA  > SATDIG   07.09.16 16:32l 821 Lines 27316 Bytes #999 (0) @ WW
BID : AMSATBB11283
Read: GUEST
Subj: AMSAT-BB-digest V11 283
Path: IW8PGT<CX2SA
Sent: 160907/1504Z @:CX2SA.SAL.URY.SOAM #:52871 [Salto] FBB7.00e $:AMSATBB11283
From: CX2SA@CX2SA.SAL.URY.SOAM
To  : SATDIG@WW

Today's Topics:

   1. FS: NIB 16-element Cushcraft 416-TB UHF Boomer $80 (JC Smith)
   2. request for antenna related information
      (Patrick STODDARD (WD9EWK/VA7EWK))
   3. Upcoming ARISS Contact Schedule as of 2016-09-06 20:00	UTC
      (AJ9N@xxx.xxxx
   4. Re: SatPC32 Vs. AMSAT Predictions (Joe Fitzgerald)
   5. [Video] Listening to the ISS with Kids at the Beach!	(Indy
      Children's Museum) (John Brier)
   6. Upcoming ARISS contact with Lawrence Public Library,
      Lawrence, KS (n4csitwo@xxxxxxxxx.xxxx
   7. PJ6Y and 4Z5RR (James G. Lea)
   8. Sat PC32 Vs. AMSAT Predictions (Ray Hoad)
   9. Re: For Sale Yaesu FT-847 Satellite Rig (Mike Sprenger)
  10. FT-736R for sale (Glenn Miller - AA5PK)
  11. edX Introduction to Aerospace Engineering Course
      (Stewart Todd Morgan)
  12. Best Connectors? (Joe)


----------------------------------------------------------------------

Message: 1
Date: Tue, 6 Sep 2016 08:35:00 -0700
From: "JC Smith" <jc-smith@xxxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] FS: NIB 16-element Cushcraft 416-TB UHF Boomer $80
Message-ID: <0f4401d20854$3afd2770$b0f77650$@xxx>
Content-Type: text/plain;	charset="us-ascii"

I hope it's still OK to post stuff for sale in the BB.  Please let me know
if it is not.



I have two of these:  New in box, cross-polarized, sixteen element Yagi
w/80" boom, 12.5 dBd forward gain. See manual with pictures and complete
specs here: http://www.pa3guo.com/cushcraft_416tb_manual.pdf



These are satellite antennas but of course have other applications and
elements could be trimmed for higher freqs.

$80 plus shipping or pick up in Walnut Creek, CA (near Pacificon).



Reply to K0HPS@xxxxx.xxx





------------------------------

Message: 2
Date: Tue, 6 Sep 2016 16:04:08 +0000
From: "Patrick STODDARD (WD9EWK/VA7EWK)" <amsat-bb@xxxxxx.xxx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] request for antenna related information
Message-ID:
<CAN6TEUfwAWN_-4k0mSo0bD6CjaNrOziN6SA=E6UvCmd+kMOTmA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8

Hi!

I received an e-mail from Dino VE7XDT, who used to be active on
the satellites from the Vancouver BC area a few years ago. After
a few years away from the satellites, he wants to get back on,
but needs some assistance. From his e-mail:

**********

I am thinking of getting something up for the birds.
I have the Icom 9100 with 1,2 GHz module as well and kept
all my Yaesu rotors and tracking controls.
Unfortunately I had brand new, never installed 2M and 70
CM N2 antennae that I sold few years back.. :(
I have the A144-20T and 416-TB but no harnesses or
baluns ?.. just the antennae.
Do you know a good source for that info? Perhaps anyone
that has the same set up . I checked Cushcraft but no
much there.

**********

Please reply to me directly if you have the information on
the harnesses and anything else he would need to get those
antennas working again.

Dino is still in the Vancouver area, still in grid CN89, so
maybe we can get a little more activity from that area along
with Chris VE7CEW who has been on the satellites lately from
there. Dino also mentioned he makes regular trips to Whitehorse
in Yukon, grid CP20. He asked if there would be any interest
in working that grid. I told him "yes", without waiting to
ask a wider audience. :-)

Thanks in advance, and 73!




Patrick WD9EWK/VA7EWK
http://www.wd9ewk.net/
Twitter: @xxxxxx


------------------------------

Message: 3
Date: Tue, 6 Sep 2016 16:08:43 -0400
From: AJ9N@xxx.xxx
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Upcoming ARISS Contact Schedule as of 2016-09-06
20:00	UTC
Message-ID: <3a9c9.5ad55d2a.45007c4b@xxx.xxx>
Content-Type: text/plain; charset="UTF-8"

Upcoming ARISS Contact Schedule as of 2016-09-06  20:00 UTC

Quick list of scheduled contacts and  events:

Lawrence Public Library, Lawrence KS, direct via  KC?NFL
The ISS callsign is presently scheduled to be NA1SS
The scheduled  astronaut is Takuya Onishi KF5LKS
Contact is a go for: Fri 2016-09-09  16:25:42 UTC 56 deg

C.E.PR. Almad?n, Ja?n, Spain, direct via EA7URJ  or TBD
The ISS callsign is presently scheduled to be OR4ISS
The scheduled  astronaut is Kate Rubins KG5FYJ (***)
Contact is a go for: Thu 2016-09-15  08:14:19 UTC 52 deg  (***)


****************************************************************************
**
Call  for Proposals
Proposal Window September 1 ? November 1, 2016

The Amateur Radio on the International Space Station (ARISS)  Program is
seeking formal and informal education institutions and organizations,
individually or working together, to host an Amateur Radio contact with a crew
member on board the ISS.  ARISS anticipates that the contact would be held
between July 1, 2017 and December 31, 2017. Crew scheduling and ISS orbits
will
 determine the exact contact dates. To maximize these radio contact
opportunities, ARISS is looking for organizations that will draw large
numbers  of
participants and integrate the contact into a well-developed education
plan.

The deadline to submit a proposal is November 1, 2016.   Proposal
information and documents can be found at 
www.arrl.org/hosting-an-ariss-contact.

************************************************************
******************
ARISS  is always glad to receive listener reports for the above contacts.
ARISS  thanks everyone in advance for their assistance.  Feel free to send
your  reports to aj9n@xxxxx.xxx or aj9n@xxx.xxx.

Listen for the ISS on  the downlink of 145.8?  MHz.

****************************************************************************
***

All  ARISS contacts are made via the Ericsson radio unless otherwise  noted.

****************************************************************************
***

Several  of you have sent me emails asking about the RAC ARISS website and
not being  able to get in.  That has now been changed to
http://www.ariss.org/

Note that there are links to other ARISS  websites from this  site.

****************************************************************************
Looking  for something new to do?  How about receiving DATV from the  ISS?

If interested, then please go to the ARISS-EU website for  complete
details.  Look for the buttons indicating Ham  Video.


http://www.ariss-eu.org/

If you need some  assistance, ARISS mentor Kerry N6IZW, might be able to
provide some  insight.  Contact Kerry at  kbanke@xxxxxxxxx.xxx
****************************************************************************
ARISS  congratulations the following mentors who have now mentored over 100

schools:

Gaston ON4WF with 121
Satoshi 7M3TJZ with 121
Francesco IK?WGF with  117

****************************************************************************
The  webpages listed below were all reviewed for accuracy.  Out of date
webpages were removed and new ones have been added.  If there are
additional
ARISS websites I need to know about, please let me  know.

Note, all times are approximate.  It is recommended that you  do your own
orbital prediction or start listening about 10 minutes before  the listed
time.
All dates and  times listed follow International  Standard ISO 8601 date
and
time format  YYYY-MM-DD HH:MM:SS

The  complete schedule page has been updated as of 2016-09-06 20:00 UTC.
(***)
Here you will find a listing of all scheduled school contacts, and
questions, other ISS related websites, IRLP and Echolink websites, and
instructions for any contact that may be streamed live.
http://www.amsat.org/amsat/ariss/news/arissnews.rtf

Total number of  ARISS ISS to earth school events is 1081.
Each school counts as 1  event.
Total number of ARISS ISS to earth school contacts is 1046.
Each  contact may have multiple schools sharing the same time slot.
Total number of  ARISS supported terrestrial contacts is 47.

A complete year by year  breakdown of the contacts may be found in the
file.
http://www.amsat.org/amsat/ariss/news/arissnews.rtf

Please  feel free to contact me if more detailed statistics are  needed.

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

The  following US states and entities have never had an ARISS contact:
Arkansas,  Delaware, South Dakota, Wyoming, American Samoa, Guam, Northern
Marianas  Islands, and the Virgin  Islands.

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

QSL  information may be found at:
http://www.ariss.org/qsl-cards.html

ISS callsigns:  DP?ISS, IR?ISS, NA1SS, OR4ISS,  RS?ISS

****************************************************************************
The  successful school list has been updated as of 2016-08-24 02:30 UTC.

http://www.amsat.org/amsat/ariss/news/Successful_ARISS_schools.rtf

Frequency   chart for packet, voice, and crossband repeater modes showing
Doppler   correction  as of 2005-07-29 04:00  UTC
http://www.amsat.org/amsat/ariss/news/ISS_frequencies_and_Doppler_correction
.rtf

Listing  of ARISS related magazine articles as of 2006-07-10 03:30  UTC.
http://www.amsat.org/amsat/ariss/news/ARISS_magazine_articles.rtf

Check  out the Zoho reports of the ARISS  contacts

https://reports.zoho.com/ZDBDataSheetView.cc?DBID=412218000000020415
****************************************************************************
Exp.  47 on orbit
Jeff Williams KD5TVQ
Oleg Skripochka RN3FU
Aleksey  Ovchinin

Exp. 48 on orbit
Anatoly Ivanishin
Kate Rubins  KG5FYJ
Takuya Onishi  KF5LKS
****************************************************************************

73,
Charlie   Sufana AJ9N
One of the ARISS operation team mentors


------------------------------

Message: 4
Date: Tue, 6 Sep 2016 21:05:22 -0400
From: Joe Fitzgerald <jfitzgerald@xxxx.xxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] SatPC32 Vs. AMSAT Predictions
Message-ID: <04af6915-8e8b-2de5-0ca6-02f164c7017d@xxxx.xxx.xxx>
Content-Type: text/plain; charset=utf-8



On 9/1/2016 5:12 PM, R.T.Liddy wrote:
> As long as I'm wondering, I have a basic question. When I update the
> Keps in PC32, do I choose Satellites nasa.all and Download Keps
> www.amsat.........../nasa.all?  Or, do I choose Satellites amateur.txt
> and Download Keps www.celestrak.........amateur.txt? Or, can it be
> a combination of the two, or doesn't it matter?
I recommend using  http://www.amsat.org/tle/current/nasabare.txt   This
file is updated daily with ISS elements from the Johnson Space Flight
Center, so you should be dead on to ISS.   It is also the go-to place
for new satellites as soon as we get reliable information/identification
often before we get information from other sources.

73 de KM1P joe

---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus



------------------------------

Message: 5
Date: Tue, 6 Sep 2016 22:28:40 -0400
From: John Brier <johnbrier@xxxxx.xxx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] [Video] Listening to the ISS with Kids at the
Beach!	(Indy Children's Museum)
Message-ID:
<CALn0fKNra8kUj58RpL2+G_yB=iRTtO=_2zf7J-2-C=dCS_ygQg@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8

https://youtu.be/a218pkQr3Oc

Help me reach 1,000 YouTube subscribers!
https://www.youtube.com/SpaceComms1?sub_confirmation=1

My friend Sammy, KK4TJH, and his kids, joined me to listen to
astronaut Kate Rubins onboard the International Space Station talking
to The Children's Museum of Indianapolis, Indiana on August 23rd,
2016. We listened from Raleigh, North Carolina and I dictated the
questions from Nags Head, North Carolina, on the Outer Banks barrier
islands of North Carolina.

Thanks for watching and 73!

John Brier KG4AKV


------------------------------

Message: 6
Date: Tue, 6 Sep 2016 23:54:35 -0400
From: <n4csitwo@xxxxxxxxx.xxx>
To: <ariss-press@xxxxx.xxx>, "amsat-edu" <amsat-edu@xxxxx.xxx>,
<amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Upcoming ARISS contact with Lawrence Public
Library,	Lawrence, KS
Message-ID: <612C9E4F669B4380B7FA239A2302697C@xxx>
Content-Type: text/plain;	charset="iso-8859-1"

An International Space Station school contact has been planned with
participants at Lawrence Public Library, Lawrence, KS on 09 Sept. The event
is scheduled to begin at approximately 16:25 UTC. The duration of the
contact is approximately 9 minutes and 30 seconds. The contact will be
direct between NA1SS and KC0NFL. The contact should be audible over the
state of Kansas, USA and adjacent areas. Interested parties are invited to
listen in on the 145.80 MHz downlink. The contact is expected to be
conducted in English.





Lawrence Public Library (LPL) is located in the vibrant community of
Lawrence, Kansas. Lawrence has a population of around 87,000 people and is
home to the University of Kansas.



LPL provides free access to a wide range of informational, intellectual, and
cultural resources for our community. We seek to create an environment in
which all members of the community feel welcome, and to act as a community
living room where all types of important topics can be discussed and examined.



Through participation in the ARISS program, we hope to provide all members
of our community with the opportunity to learn more about space exploration,
the international space station, and radio in general. We most especially
are hoping to encourage 6-12th graders in our community to expand their
horizons and consider STEM careers.



In the months leading up to our contact with the International Space Station
LPL has provided a number of programs in partnership with the Douglas County
Amateur Radio Club ranging from building crystal radios and preparing for
and taking the radio technician exam, to star gazing and learning about the
science of rocketry and what life is like in space. Space-themed story hours
for the smallest kids, and book displays for teens and adults also sought to
educate and excite as many community members as possible about the upcoming
contact.



Our full community was encouraged to become involved in the contact by
submitting potential questions to ask the astronauts, and then by voting for
their favorite questions in order to narrow the list down to our community's
top 20. A lucky group of 6-12th graders will get to ask these questions as
we all listen in to the radio contact.



In the hours surrounding our contact LPL and a number of local organizations
will provide activities and informational booths on everything from what it
takes to become an astronaut, to activities such as launching paper rockets
on the library lawn.



It will be an event for the whole community to enjoy and an opportunity for
our teens to look beyond the everyday and imagine a future with STEM.





Participants will ask as many of the following questions as time allows:



1.   Have you seen any examples of your crew developing its own space

     culture?

2.   What kinds of bacteria are in the space station?

3.   What does the international space station smell like?

4.   Are space headaches worse than headaches you've had on earth?

5.   How do you deal with mental health issues in space?

6.   Can you see space junk outside the space station and does it look like

     litter?

7.   Would you go to Mars if you were given the opportunity?

8.   How frequently do you see meteors/objects entering atmospheres, how is

     it different from seeing them on Earth?

9.   Do you have a favorite experiment?

10.   While in space, do you prefer books/music about space, or something

      more terrestrial, and why?

11.   What are you reading? And how do you get new materials (ebooks,

      physical books etc.)?

12.   Have your experiences in space changed your outlook on life, and if so,

      how?

13.   What happens when there is a solar flare?

14.   Do you ever get claustrophobic in the space station?

15.   Have you had an experience in space where your preparation didn't

      really prepare you for the event and why?

16.   What inspired you to become an astronaut?

17.   What is the most exciting thing on the horizon for the ISS?

18.   Do you ever fear that when you come back to Earth everything will be

      different?

19.   What are your thoughts on the international cooperation necessary to

      make a project like the international space station possible?

20.   What is the most difficult part of your current journey?







PLEASE CHECK THE FOLLOWING FOR MORE INFORMATION ON ARISS UPDATES:



      Visit ARISS on Facebook. We can be found at Amateur Radio on the

      International Space Station (ARISS).



      To receive our Twitter updates, follow @xxxxxxxxxxxx





Next planned event(s):



      1. C.E.PR. Almad?n, Ja?n, Spain, direct via EA7URJ or TBD

         The ISS callsign is presently scheduled to be OR4ISS

         The scheduled astronaut is Kate Rubins KG5FYJ

         Contact is a go for: Thu 2016-09-15 08:14 UTC





About ARISS:

Amateur Radio on the International Space Station (ARISS) is a cooperative
venture of international amateur radio societies and the space agencies that
support the International Space Station (ISS). In the United States,
sponsors are the Radio Amateur Satellite Corporation (AMSAT), the American
Radio Relay League (ARRL), the Center for the Advancement of Science in
Space (CASIS) and  National Aeronautics and Space Administration (NASA). 
The primary goal of ARISS is to promote exploration of science, technology,
engineering, and mathematics (STEM) topics by organizing scheduled contacts
via amateur radio between crew members aboard the ISS and students in
classrooms or informal education venues.  With the help of experienced
amateur radio volunteers, ISS crews speak directly with large audiences in a
variety of public forums.  Before and during these radio contacts, students,
teachers, parents, and communities learn about space, space technologies,
and amateur radio.  For more
  information, see www.ariss.org, www.amsat.org, and www.arrl.org.



Thank you & 73,

David - AA4KN


---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus


------------------------------

Message: 7
Date: Tue, 6 Sep 2016 22:19:00 -0400
From: "James G. Lea" <wx4tv@xxxxxxxx.xxxxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] PJ6Y and 4Z5RR
Message-ID: <B04185BD-06C4-444E-A235-37C42D49BE08@xxxxxxxx.xxxxx>
Content-Type: text/plain;	charset=utf-8

I have been listening to the recordings for PJ6Y to make sure that we have
everyone in the log and I heard 4Z5RR give one of the operators a call.  The
accent the guy has sounds like he is from the islands, and he doesn?t seem
to know how to work the birds, so I suspect that this is a bootleg call. 
Does anyone know about this guy?  There is no way we worked him from Israel
on SO-50.

Also, the leadership for the Youth DX Adventure refuses to use LOTW and will
not allow me to upload to LOTW.  If you worked PJ6Y on HF or satellite,
please QSL to the address on QRZ.


73,

James Lea - WX4TV
ARRL Section Youth Coordinator - Northern Florida Section
+1 (386) 414-0788

Want to learn more about all that Ham Radio has to offer?
Check out http://www.HamRadio.World <http://www.hamradio.world/>!



------------------------------

Message: 8
Date: Tue, 6 Sep 2016 21:44:18 -0500
From: "Ray Hoad" <ray.hoad@xxxxxxxx.xxx>
To: "'amsat-bb'" <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Sat PC32 Vs. AMSAT Predictions
Message-ID: <000b01d208b1$bb6bbf40$32433dc0$@xxxxxxxx.xxx>
Content-Type: text/plain;	charset="us-ascii"

Joe Fitzgerald, KM1P, in answer to a comment made the following reply:

" recommend using  http://www.amsat.org/tle/current/nasabare.txt
This file is updated daily with ISS elements from the Johnson Space Flight
Center, so you should be dead on to ISS.   It is also the go-to place
for new satellites as soon as we get reliable information/identification
often before we get information from other sources."

This is very good advice and I want to make sure it's not lost is the daily
AMSAT-BB dialogue!  Note that SatPC32 and probably most of the other
tracking programs do not have the above URL listed in the standard choices.
I suggest that you add this option to your tracking program either by
changing the update choices or even typing in the above URL each time if you
have no other option.  In SatPC32, you can add the URL to the auxiliary file
"Celetrak.SQF" I tried it and it works. Note that you will have to close
SatPC32 and reopen it in order to read in the new "Celetrak.SQF" data.

Ray Hoad
WA5QGD






------------------------------

Message: 9
Date: Wed, 7 Sep 2016 09:10:53 -0400
From: Mike Sprenger <mikesprenger@xxxxx.xxx>
To: AMSAT-BB <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] For Sale Yaesu FT-847 Satellite Rig
Message-ID:
<CAB4zG_+iyt06KDhm5=juzWZRhtAncy+G3=8Oc1rqVga+T32HLg@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8

Greetings,

Posted this a few weeks ago, following up:

Would much rather see this radio go to a fellow AMSAT enthusiast and let
this radio be enjoyed on satellite, let me know if you have interest in
this FT-847 at $795 to start the discussion, I'm willing to negotiate to
make someone happy working the birds.

Contact me off list if interested and we can talk.

Thanks,
Mike
W4UOO

On Sat, Aug 13, 2016 at 12:53 PM, Mike Sprenger <mikesprenger@xxxxx.xxx>
wrote:

> Hi,
>
> Cleaning out some things, would rather see a fellow amsat-er enjoy this
> radio on the Satellites
>
> I have a Yaesu FT-847 which is an all mode (FM/CW/SSB) HF through 70cm
> (less 220) Rig.    Its not had a lot of use since I got it, which means its
> got little wear.
>
> Asking $950 plus shipping to your QTH.    I have the original box for this
> radio. There's a scratch on the top next to the speaker, but even so, it
> looks nice, given this, its not museum quality, but it sure will get you on
> the air if you like working the satellites and look nice in your station.
>
> Also, it has RS-232 and is a late enough model that the RS-232 is
> bi-directional, which means it works fine with SatPC32, where for instance,
> you tune the receive dial on the radio, and SATPC then reads the downlink,
> calculates doppler, then sets the uplink for you.  Works nicely, with 100w
> on 6m and HF (plus Mode A on AO-7 = uplink on 2m down on 10M) and will
> power mast mount preamps on 2m/70cm via the coax.
>
> No Paypal - Cashiers Check or Money Order, then I'm glad to ship.   The
> Radio Works - Selling As-Is because I'm not interested in being scammed and
> have someone send me a carcass back....expecting a refund, sorry I even
> have to say that...   For serious enquiries, I'm more than willing to
> provide pictures.  (I don't think pictures go through the amsat-bb, I can
> send pictures direct)
>
> Here's the info from Yaesu's website about the radio:
> http://www.yaesu.com/indexVS.cfm?cmd=DisplayProducts&
> ProdCatID=102&encProdID=1F9F41E47B926F9590C43C638C5EFD00
>
> 73
> Mike
> W4UOO
>



--
Thanks,
Mike Sprenger
(37.9167N  81.1244W is the Summit)


------------------------------

Message: 10
Date: Wed, 7 Sep 2016 09:20:20 -0500
From: "Glenn Miller - AA5PK" <aa5pk@xxxxxxxxxx.xxx>
To: "AMSAT BBS" <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] FT-736R for sale
Message-ID: <84EA67ABF60847919A73CF0041AB91D6@xxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original

Estate sale.  Just passing this along.

YAESU FT-736R VHF/UHF ALL MODE TRANSCEIVER
SSB/CW/FM  THE RADIO HAS 2 METER, 440, 220, 6 METER AND THE ELEMENT FOR 1.2
GHZ. INCLUDES MANUALS AND SERVICE MANUALS.
ASKING  $1600.

PURCHASED NEW BY THE OWNER.  IT HAS NEVER BEEN IN A SMOKING ENVIRONMENT. 
HAS SEEN VERY LITTLE USE AND IS IN EXCELLENT TO
LIKE NEW CONDITION.
CONTACT: ALAN WALRAVEN, N5MSE,   940-872-0484



------------------------------

Message: 11
Date: Wed, 7 Sep 2016 10:21:44 -0400
From: Stewart Todd Morgan <morgan_st@xxxxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] edX Introduction to Aerospace Engineering Course
Message-ID: <59a11772-6b3f-0d40-2d7c-f014e0b87c93@xxxxxxxxx.xxx>
Content-Type: text/plain; charset=utf-8; format=flowed

MIT is conducting an online introductory aerospace engineering course
through edX.  The course began yesterday.

If you want to know more about the physics and mathematics that
underlies the 2-line Keplerian element sets that amateurs use to track
satellites, the course includes a segment on orbital mechanics.  If you
have been listening to the ARISS contacts between ISS crew and ground
stations, you may have heard astronauts/cosmonauts make reference to
spacewalks and the effects of microgravity.  Dr. Kate Rubins indicated
in her recent ARISS contact with The Children's Museum in Indianapolis
that the spacewalk was the most difficult aspect of time on the station.
These topics and other are covered in the course which is taught by
former NASA astronaut Dr. Jeffrey Hoffman.

More information is available here:

https://www.edx.org/course/introduction-aerospace-engineering-mitx-16-00x-0#!

Todd
AL0I



------------------------------

Message: 12
Date: Wed, 7 Sep 2016 09:33:07 -0500
From: Joe <nss@xxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Best Connectors?
Message-ID: <a637895a-e70b-faf4-1c59-290af8755114@xxx.xxx>
Content-Type: text/plain; charset=windows-1252; format=flowed

Hi All,
I till last night thought I found the "Holy Grail" of a connector and
connector source.
But maybe was blown down by a "Professional" That does all this "Radio
Stuff" for a living.

I always LOVED the old "N" connectors. With the big rubber clamping
thing inside for the shield. And always wished that method was available
on other connectors, even the old PL-259.

A few weeks ago I found them, Like this,

http://dxavenue.com/131-465-thickbox/pl-259-clamp-connector-uhf-male.jpg

  and I found a source, that is not only CHEAP, but in any combination
you could even dream of. So No losses from adapters. Like from LMR-400
to Male BNC, or even LMR-400 to female SMA.

I bought three connectors.
(2) LMR-400 to Male BNC
(1)  Male BNC to Female SMA

Total cost only 9 bucks and 3 days shipping time!

OK, I was sooo happy I had to bring them to the club meeting last night
to let everyone else know of this find. And a guy that works for a land
mobile company. They do all the radio work around here for the police,
FD etc. And he said he wished he knew I wanted them. They got a box of a
hundred in the storage room. A lot of equipment comes with the
connectors like these but they refuse to use them. He said they are not
reliable and the ground connection fails.

I never heard of this before.  What is everyones thoughts here?

Joe WB9SBD
--
Sig
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com


------------------------------

Subject: Digest Footer

_______________________________________________
Sent via amsat-bb@xxxxx.xxx.
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 member? Join now to support the amateur satellite program!
http://www.amsat.org/mailman/listinfo/amsat-bb

------------------------------

End of AMSAT-BB Digest, Vol 11, Issue 283
*****************************************


Read previous mail | Read next mail


 27.12.2024 22:04:31lGo back Go up