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CX2SA > SATDIG 19.11.09 22:06l 295 Lines 9165 Bytes #999 (0) @ WW
BID : AMSATBB4614
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Subj: AMSAT-BB-digest V4 614
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Sent: 091119/2004Z @:CX2SA.LAV.URY.SA #:19013 [Minas] FBB7.00e $:AMSATBB4614
From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: PocketSat3 for iPhone, iPod touch (Clint Bradford)
2. Arrow Antenna - Mod II (Clint Bradford)
3. AO-51 back to 9k6 PBBS and telemetry (Andrew Glasbrenner)
4. Thanks for 3 new grids on AO-27 this afternoon!
(Patrick STODDARD (WD9EWK/VA7EWK))
5. IC-910 mic connector (Bob- W7LRD)
6. Re: IC-910 mic connector (w4upd)
7. Re: Satellite Thermal Lesson (Robert Bruninga)
8. Intelsat is advertising for Geosynchronous Hosted Payloads
(Daniel Schultz)
----------------------------------------------------------------------
Message: 1
Date: Wed, 18 Nov 2009 12:14:10 -0800
From: Clint Bradford <clintbrad4d@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: PocketSat3 for iPhone, iPod touch
To: amsat-bb@xxxxx.xxx
Message-ID: <2A2FD9D2-8E78-4803-BDDD-87FCFE48AC3A@xxxxxxxxx.xxx>
Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes
>> ... Unfortunately the $1.99 version is only good for 40 fixed
sats ...
The two-buck app lets you know if the program runs properly on your
particular setup.
Again, I have tried six sat tracking apps for my new 32GB iPod touch -
and PocketSat3 if the finest of the bunch.
Clint Bradford, K6LCS
http://www.work-sat.com
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Message: 2
Date: Wed, 18 Nov 2009 12:14:54 -0800
From: Clint Bradford <clintbradford@xxx.xxx>
Subject: [amsat-bb] Arrow Antenna - Mod II
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Message-ID: <070CB270-0B3E-4ABE-A120-2D4B2A380230@xxx.xxx>
Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes
I just posted photos of another "mod" performed to my Arrow Satellite
Antenna: the addition of an HT tray.
Helps with "counter-balancing."
Use the PHOTOS link at the top of ...
http://www.work-sat.com
Clint Bradford, K6LCS
909-241-7666
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Message: 3
Date: Wed, 18 Nov 2009 18:52:31 -0500
From: Andrew Glasbrenner <glasbrenner@xxxxxxxxxx.xxx>
Subject: [amsat-bb] AO-51 back to 9k6 PBBS and telemetry
To: Amsat-BB <amsat-bb@xxxxx.xxx>, AO51 Modes <ao51-modes@xxxxx.xxx>
Message-ID: <4B0488BF.9030109@xxxxxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Due to a combination of meeting some of our objectives early and having
issues with others, we have switched from 38k4 to 9k6 for the last day
of this scheduled mode. We might be experiencing some desense issues on
the L uplink with the 38k4, so for the next 24 hours we'd like to
encourage any L/U 9k6 capable stations to attempt to access the BBS and
let us know if you are successful. Power is at 2.05 watts, so the
downlink is strong.
73, Drew KO4MA
AMSAT VP Operations
------------------------------
Message: 4
Date: Wed, 18 Nov 2009 15:59:43 -0800 (PST)
From: "Patrick STODDARD \(WD9EWK/VA7EWK\)" <amsat-bb@xxxxxx.xxx>
Subject: [amsat-bb] Thanks for 3 new grids on AO-27 this afternoon!
To: amsat-bb@xxxxx.xxx
Message-ID: <473366.31248.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Hi!
Thanks to John W6ZKH, Alvaro XE2AT, and Ismael XE1AY for 3 new
grids in the log during an AO-27 pass around 2043 UTC this
afternoon. As "advertised", John and Alvaro were on from unusual
spots - W6ZKH from DM07 in California, XE2AT from EK19 in Veracruz
on the Mexican Gulf coast. XE1AY was also in there from DL91 in
central Mexico, another new one for the log.
Alvaro - it is nice to see you operate from different parts of
Mexico once again. It's been a while. :-)
73!
Patrick WD9EWK/VA7EWK
http://www.wd9ewk.net/
------------------------------
Message: 5
Date: Thu, 19 Nov 2009 02:20:47 +0000 (UTC)
From: Bob- W7LRD <w7lrd@xxxxxxx.xxx>
Subject: [amsat-bb] IC-910 mic connector
To: amsat-bb@xxxxx.xxx
Message-ID:
<1291288123.4095001258597247846.JavaMail.root@xxxxxxx.xxxxxxxxxx.xx.xxxx.xxxxx
xx.xxx>
Content-Type: text/plain; charset=utf-8
For you 910 owners
I am configuring a sequencer for my IC-910.? On the mic connector, what is
the +8Vdc 10ma on pin 2 used for?? I am tapping into the PTT for triggering
the sequencer and just trying to figure it all out.
Thanks
73 Bob W7LRD
Washington State AMSAT area coordinator
?
------------------------------
Message: 6
Date: Wed, 18 Nov 2009 21:26:05 -0500
From: w4upd <updwrb@xxxxxxxxxxxxx.xxx>
Subject: [amsat-bb] Re: IC-910 mic connector
To: Bob- W7LRD <w7lrd@xxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <4B04ACBD.7050607@xxxxxxxxxxxxx.xxx>
Content-Type: text/plain; charset=UTF-8; format=flowed
Same as most rigs. It is used to power up the attached mike. Most mike's
today require power due to preamps being inside the units. This is
especially true of desk mikes.
Reid, W4UPD
Bob- W7LRD wrote:
> For you 910 owners
> I am configuring a sequencer for my IC-910. On the mic connector, what is
the +8Vdc 10ma on pin 2 used for? I am tapping into the PTT for triggering
the sequencer and just trying to figure it all out.
> Thanks
>
>
> 73 Bob W7LRD Washington State AMSAT area coordinator
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------------------------------
Message: 7
Date: Thu, 19 Nov 2009 02:22:37 -0500
From: "Robert Bruninga" <bruninga@xxxx.xxx>
Subject: [amsat-bb] Re: Satellite Thermal Lesson
To: "'Steven Bienvenu'" <sbienv@xxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <9246A0F56DA446B3A2DFDFB63F2B2BCA@xxxxx.xxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
> Subject: Re: [amsat-bb] Re: Satellite Thermal Lesson
>
> Fascinating report, Bob - thanks for sharing...
> I recently bought a cheap IR thermometer (gave into a
> long-standing state of curiosity) and had great fun
> with it; can't wait to do some more testing, but
> lots of fun walking around pointing at things
> in the environment.
But if you read the docs, the display from such an IR
thermometer is completely meaningless unless you know the
EMISSIVITY of what you are pointing at...
Now the good news is that MOST things have a reasonablly good
emissivity, such as BLACMK and WHITE and Fingerprints etc...
Remember, even my fingerprints changed the emissivity of my
aluminum from about 4% all the way up to near 90% like black and
everything else.
But point that thermometer at CLEAN aluminum and the reading
will be meaningless for TWO reasons:
1) If it is clean, it will see hardly any IR from the aluminum
and so "it should read a real low temperature"...
2) But it WONT! The reason is, that ALUMINUM is also a great
REFLECTOR of IR! So therefore your IR thermometer will not even
see the alluminum plate anyway, because all it will see is what
it sees reflected in the aluminum.
You can prove this to your self by holding a sheet of aluminum
as if it was a mirror. Point is so y our IR gun see's your body
in its reflection and you will see your body temperature. Point
the reflection to somethig cold, and it will read the cold
temperature.
So again, those IR thermometers are only as good as the
knowledge of the person using them. That's why those "window"
snake-oil salesmen can come out and show you all the "leaks" and
lost heat in your home, and sell you thousands of $$$ of new
windows, because they either 1) don't have a clue how their
instruments work, or 2) They do know, but they use the
missleading display to fool the gullible.
Thanks for the reminder about those IR thermometers. Someone in
our department got some and was running around doing all kinds
of measurements... Then we showed him how his measurements
didn't mean a thing unless he knew the emissivity of what he was
shooting at... Sure pulled the rug out from under him. But
again. Almost everything around you has a high emissivity...
But if he doesn't know what does and what doesn't, then he is
just messing around... And should not use those numbers for
anything valuable...
Bob, WB4APR
------------------------------
Message: 8
Date: Thu, 19 Nov 2009 05:04:33 -0500
From: "Daniel Schultz" <n8fgv@xxx.xxx>
Subject: [amsat-bb] Intelsat is advertising for Geosynchronous Hosted
Payloads
To: <amsat-bb@xxxxx.xxx>
Message-ID: <412NkskDh5168S10.1258625073@xxxxxxxx.xxx.xxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Intelsat is running banner ads on Science Magazine's web site, offering
"Hosted Payloads" on geosynchronous satellites. Check it out at
http://www.spacedelivered.com/view/
Dan Schultz N8FGV
------------------------------
_______________________________________________
Sent via amsat-bb@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT member? Join now to support the amateur satellite program!
http://amsat.org/mailman/listinfo/amsat-bb
End of AMSAT-BB Digest, Vol 4, Issue 614
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