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CX2SA > SATDIG 29.04.09 16:16l 789 Lines 28503 Bytes #999 (0) @ WW
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Today's Topics:
1. IC-451A trouble (w7lrd@xxxxxxx.xxxx
2. A Fully Rechargeable Satellite Station (n3tl@xxxxxxxxx.xxxx
3. Question about building the "Cheap" Antenna by WA5VJB (racer5039)
4. May AO-51 schedule (Andrew Glasbrenner)
5. AMSAT DXpedition loaner gear (Andrew Glasbrenner)
6. Opening on the AO-51 Operations Committee (Andrew Glasbrenner)
7. We are planning a grid dxpedition to the EN20/EN30 grid
boundary just west of Jameson, MO on 5/1/09. (Gail A Mcdaniel)
8. Re: A Fully Rechargeable Satellite Station (Alan Sieg WB5RMG)
9. Re: May AO-51 schedule (Luc Leblanc)
10. Re: A Fully Rechargeable Satellite Station (Andy MacAllister)
11. Sierra Vista AZ hamfest, Saturday (2 May 2009)
(Patrick STODDARD (WD9EWK/VA7EWK))
12. Re: A Fully Rechargeable Satellite Station (Greg D.)
13. Re: A Fully Rechargeable Satellite Station (n3tl@xxxxxxxxx.xxxx
14. looking for software (Nick)
15. Re: A Fully Rechargeable Satellite Station (Roger Kolakowski)
16. Re: A Fully Rechargeable Satellite Station (n3tl@xxxxxxxxx.xxxx
----------------------------------------------------------------------
Message: 1
Date: Tue, 28 Apr 2009 21:11:28 +0000 (UTC)
From: w7lrd@xxxxxxx.xxx
Subject: [amsat-bb] IC-451A trouble
To: NW VHF <PNWVHFS@xxxxxxxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID:
<1820861799.2927741240953088424.JavaMail.root@xxxxxxx.xxxxxxxxxx.xx.xxxx
.xxxxxxx.xxx>
Content-Type: text/plain; charset=utf-8
I have an IC-451A with a intermittent in the transmit.? I will be transmitting
and it will stop for a few minutes then it will be able to transmit again.?
When it is stopped when I try to key it there is no output meter indication
but the pilot light dims like it does when it is working.? If sounds familiar
to anyone, please let me know.? I will dig into a bit, before I run it up the
road to Icom in Bellevue.
73 Bob W7LRD
CN87
------------------------------
Message: 2
Date: Tue, 28 Apr 2009 22:14:29 +0000
From: n3tl@xxxxxxxxx.xxx
Subject: [amsat-bb] A Fully Rechargeable Satellite Station
To: AMSAT-BB@xxxxx.xxx
Message-ID:
<042820092214.8239.49F77FC40009E78C0000202F22230650029B0A02D2089B9A019C0
4040A0DBF049BCC02@xxx.xxx>
Content-Type: text/plain; charset="utf-8"
Hey everyone,
Over the past 10 months, I?ve made some great new friendships
- thanks to AMSAT and its good work to keep amateur radio in space. Many of
those friends know that I?ve chosen ?a different path to orbit? in my desire
to incorporate the concept of emergency communications.
FCC Part 97 is unambiguous in noting that Amateur Radio
operators? abilities to serve the public through provision of emergency
communications are, collectively, the lynchpin of the service in the United
States. The more I learned about the satellites we all love, the more it
became clear to me that it had to be possible to assemble an effective
?emergency? station that would be true to that purpose. I began thinking of
it as my rechargeable station.
By 03:15 UTC on 27 April, that possibility became a reality.
Over the course of the day Sunday and into Monday (UTC), I was fortunate to
work multiple contacts in SSB on AO-7, FO-29 and VO-52 using a totally
portable (but full-featured) station running on full emergency power. How do I
define ?full-featured? in this context? My station operates full duplex,
incorporates computer-controlled Doppler tuning, and can work CW, SSB, packet
and all the digital modes while running on rechargeable batteries.
Sunday started out with a pleasant surprise ? DJ8NY in CW on
AO-7, making Germany the fourth European country to find Georgia on AO-7 in
the past 10-or-so days. Oh ? no; I was NOT running full battery power. Given
my approach to the antenna here, those low-angle passes of AO-7 call for more
than the 5 watts my fully rechargeable station can muster, so I transmit using
a Yaesu FT-857D, which provides up to 20 watts out on 70 cm. I need the extra
rf muscle because I work AO-7 from my shack, in a second-floor bedroom of my
home, and I hand-hold my Elk log periodic antenna. Reaching the satellite when
Europe and EM84 share the footprint have me pointing the Elk at a windowless
wall, generally at the northeast corner of the house.
The rest of Sunday (and into Monday, UTC), I replaced the FT-
857D with a Yaesu FT-817ND for transmitting. Another FT-817ND served as my
receiver, as it always does (even with the 857). I use a Diamond MX-72H
duplexer to connect both radios to the Elk, and use about 6 feet of RG-8X
between the duplexer and the antenna. I have not yet used a receive preamp on
either 2 meters or 70 centimeters. Both radios used their internal battery
packs for power, as did the Acer Aspire One netbook computer I picked up last
fall specifically for radio use. I have been able to configure Orbitron, SatPC
32 and Ham Radio Deluxe (Version 4.1 beta, with the Satellite Tracker
software) to provide computer-controlled Doppler tuning.
With multiple CW contacts already in the log on all three
satellites using the fully rechargeable station, I wanted to complete the
exercise by adding SSB contacts on all three linear satellites in the same
day. Thanks to Angelo (N5UXT), Leo (W7JPI), Art (K4YYL), Joe (K3SZH), Bob
(KC9ICH) and everyone else I worked Sunday for their signal reports and
encouragement. It was pretty neat heading to bed knowing that I had a station
I could take down and set up anywhere in a matter of minutes (excluding travel
time, of course) that I could use to effectively work virtually any mode
available to U.S. amateurs from 40 meters through 70 cm, including all the
satellites.
I mention the HF bands and use the phrase ?virtually any mode?
because I picked up a screwdriver vertical last fall too, and have used it or
an end-fed longwire (with a manual MFJ tuner) and a Signal Link USB to make
contacts using a variety of sound-card based digital modes, including PSK-31,
Olivia, RTTY and SSTV. Having been totally inactive from early 1992 until
about 2 years ago, I continue to be amazed at all we amateurs have to enjoy on
the air.
My ISS contacts will always be my best QSOs ever. But working
Europe on AO-7 and routinely making multiple contacts on passes of all of our
satellites running 5 watts rf out or less ? all of them with a handheld
antenna and many of them from inside ? won?t ever get old.
When I told Angelo what I was up to on Sunday during our FO-29
contact, he told me I needed to write it up for the AMSAT-BB. So ? here it is.
My primary motivation to share all of this is to suggest to
anyone who?s interested that ALL of our amateur satellites are routinely
workable from stations that don?t have all the bells and whistles. They don?t
even need a lot of power.
Go to the AMSAT Web site (www.AMSAT.org) and look through the
descriptions of the satellites we all can work daily. With the exception of
the ISS, every satellite we work is transmitting to Earth using QRP power
levels ? even AO-7. And none of them are using ?optimum? antenna systems
offering lots of gain and directivity.
Ten months ago today (28 June, 2008), I had my first-ever
satellite contact ? with KD8ILL in EM99 on AO-51. We both used handheld
stations. I never imagined that what started with a brief QSO would have led
to so many wonderful contacts and new friendships.
73 to all,
Tim ? N3TL
Athens, Ga. ? EM84ha
------------------------------
Message: 3
Date: Tue, 28 Apr 2009 19:52:33 -0500
From: "racer5039" <racer5039@x.xxx>
Subject: [amsat-bb] Question about building the "Cheap" Antenna by
WA5VJB
To: "AMSAT BB" <amsat-bb@xxxxx.xxx>
Message-ID: <BLU102-DAV10FEDC764D3C83ADF3984AC6F0@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
I am working on some a couple of the "Cheap" antennas by WA5VJB, that have
been talked about on here.
I am building these for Field Day and th use for some moble work on AO-51 &
AO-27 after that.
My question is this, Is the "J" /DE element centered in line with the others
or is just the long side in line?
My guess is the long side but thought it better to ask.
Thanks
Marv
N0FJP
------------------------------
Message: 4
Date: Tue, 28 Apr 2009 21:44:38 -0400
From: "Andrew Glasbrenner" <glasbrenner@xxxxxxxxxx.xxx>
Subject: [amsat-bb] May AO-51 schedule
To: <amsat-bb@xxxxx.xxx>
Message-ID: <112631B5133D4BC89FCEAC9E604D3BFC@xxxxxxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Due to rapidly increasing eclipse lengths throughout May, we need to keep
the satellite in "normal" mode for Whole Orbit Data (WOD) collection via the
BBS. Power output will steadily be decreased throughout the month.
April 27 - May 31
FM Repeater, V/U
Uplink: 145.920 MHz FM
Downlink: 435.300 MHz FM
9k6 BBS and Telemetry
Uplink: 1268.700 MHz FM
Downlink: 435.150 MHz FM
73, Drew KO4MA
AMSAT-NA VP Operations
------------------------------
Message: 5
Date: Tue, 28 Apr 2009 22:04:48 -0400
From: "Andrew Glasbrenner" <glasbrenner@xxxxxxxxxx.xxx>
Subject: [amsat-bb] AMSAT DXpedition loaner gear
To: <amsat-bb@xxxxx.xxx>
Message-ID: <90F83E8213C74DF4A4FFB449A340BFE7@xxxxxxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
I just wanted to remind everyone that the AMSAT DXpedition loaner gear is
available to members for use activating a DXCC entity or rare grids such as
on a cruise. Currently we have two Arrow antennas, and a D7 handheld
available for loan. Please contact me at ko4ma@xxxxx.xxx for more
information.
73, Drew KO4MA
------------------------------
Message: 6
Date: Tue, 28 Apr 2009 22:34:08 -0400
From: "Andrew Glasbrenner" <glasbrenner@xxxxxxxxxx.xxx>
Subject: [amsat-bb] Opening on the AO-51 Operations Committee
To: <amsat-bb@xxxxx.xxx>
Message-ID: <AB3AB7CFCFF342738548FEE643791D9D@xxxxxxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
We currently have an opening on the AO-51 Operations Committee for an
enthusiastic individual interested in helping with scheduling, answering
questions about operations, and supporting AO-51 in general. Interested
parties are required to be an AMSAT member in good standing, have regular
access to email, and be experienced in many of the modes in which AO-51
operates in order to be considered. This is an excellent opportunity to get
involved with AMSAT for those new to volunteering for the organization.
I don't expect to announce the new member until after Dayton. Also, please
be patient while waiting for a response. Email the Operations Committee at
ao51-modes@xxxxx.xxxx directly to me at ko4ma@xxxxx.xxxx or see me in person
at Dayton.
73, Drew KO4MA
AMSAT-NA VP Operations
------------------------------
Message: 7
Date: Tue, 28 Apr 2009 19:40:54 -0700 (PDT)
From: Gail A Mcdaniel <gmcdanl@xxxxxxxxx.xxx>
Subject: [amsat-bb] We are planning a grid dxpedition to the EN20/EN30
grid boundary just west of Jameson, MO on 5/1/09.
To: amsat-bb@xxxxx.xxx
Message-ID: <38792.32443.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
We are planning a grid dxpedition to
the EN20/EN30 grid boundary just west of Jameson, MO on 5/1/09.
We anticipate being active on the following passes:
Satellite ?? ?Date ?? ??? AOS(UTC) ?? ?
AO-27 ?? ?1-May-09?? 19:19:16 ?? ?
AO-27 ?? ?1-May-09?? 20:58:37 ?? ?
AO-51 ?? ?1-May-09?? 22:07:59?? ?
AO-51 ?? ?1-May-09?? 23:43:13 ?? ?
The operation is contingent upon having acceptable
weather and we hope to work everyone who needs these
very rare grids.
73,
David McDaniel, KB0RZE
Gail McDaniel - KB0RZD
------------------------------
Message: 8
Date: Tue, 28 Apr 2009 22:26:53 -0500 (CDT)
From: "Alan Sieg WB5RMG" <wb5rmg@xxxxxxx.xxx>
Subject: [amsat-bb] Re: A Fully Rechargeable Satellite Station
To: amsat-bb@xxxxx.xxx
Message-ID: <1096.192.168.121.31.1240975613.squirrel@xxx.xxx.xxx.xx>
Content-Type: text/plain;charset=iso-8859-1
Way to go Tim...
Good job, good story . . . very inspirational.
I encourage you to press onward with this, as I indicated by email.
Thank you for your enthusiasm, and making all those contacts that I haven't
been able to make time for. I'm enjoying reading of your adventures...
Keep up the good DX !
73 for now /;^)
--
<- Licensed in 1976, WB5RMG = Alan Sieg * AMSAT#20554 ->
<- http://www.somenet.net * http://wb5rmg.somenet.net ->
<- http://www.linkedin.com/in/alansieg * My 'Day Job' ->
------------------------------
Message: 9
Date: Tue, 28 Apr 2009 23:11:58 -0400
From: Luc Leblanc <lucleblanc6@xxxxxxxxx.xx>
Subject: [amsat-bb] Re: May AO-51 schedule
To: amsat-bb@xxxxx.xxx
Message-ID: <49F78D3E.1310.3B0F8A8@xxxxxxxxxxx.xxxxxxxxx.xx>
Content-Type: text/plain; charset=US-ASCII
On 28 Apr 2009 at 21:44, Andrew Glasbrenner wrote:
> Due to rapidly increasing eclipse lengths throughout May, we need to keep
> the satellite in "normal" mode for Whole Orbit Data (WOD) collection via the
> BBS. Power output will steadily be decreased throughout the month.
>
> April 27 - May 31
>
> FM Repeater, V/U
> Uplink: 145.920 MHz FM
> Downlink: 435.300 MHz FM
>
> 9k6 BBS and Telemetry
> Uplink: 1268.700 MHz FM
> Downlink: 435.150 MHz FM
>
>
> 73, Drew KO4MA
> AMSAT-NA VP Operations
A good opportunity to test the receiving capabilities of our installation a
kind of ZRO test. If the power used can be publish it will be
even more interesting.
"-"
Luc Leblanc VE2DWE
Skype VE2DWE
www.qsl.net/ve2dwe
WAC BASIC CW PHONE SATELLITE
------------------------------
Message: 10
Date: Tue, 28 Apr 2009 22:37:10 -0500
From: "Andy MacAllister" <w5acm@xxxxxx.xxx>
Subject: [amsat-bb] Re: A Fully Rechargeable Satellite Station
To: <amsat-bb@xxxxx.xxx>
Message-ID: <633D71869273440DAE60F037B2A213E2@xxxxxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
It was a feature item on the Houston AMSAT Net this evening.
Thanks!
Andy W5ACM
http://www.amsatnet.com
http://www.w5acm.net
----- Original Message -----
From: "Alan Sieg WB5RMG" <wb5rmg@xxxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Sent: Tuesday, April 28, 2009 10:26 PM
Subject: [amsat-bb] Re: A Fully Rechargeable Satellite Station
> Way to go Tim...
> Good job, good story . . . very inspirational.
> I encourage you to press onward with this, as I indicated by email.
>
> Thank you for your enthusiasm, and making all those contacts that I
> haven't
> been able to make time for. I'm enjoying reading of your adventures...
> Keep up the good DX !
> 73 for now /;^)
> --
> <- Licensed in 1976, WB5RMG = Alan Sieg * AMSAT#20554 ->
> <- http://www.somenet.net * http://wb5rmg.somenet.net ->
> <- http://www.linkedin.com/in/alansieg * My 'Day Job' ->
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 11
Date: Tue, 28 Apr 2009 22:36:54 -0700 (PDT)
From: "Patrick STODDARD \(WD9EWK/VA7EWK\)" <amsat-bb@xxxxxx.xxx>
Subject: [amsat-bb] Sierra Vista AZ hamfest, Saturday (2 May 2009)
To: amsat-bb@xxxxx.xxx
Message-ID: <117283.59731.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Hi!
I will be attending the Cochise Amateur Radio Association's
Larry Warren hamfest on Saturday, 2 May 2009. I'll have an
AMSAT table at this hamfest, and have satellite demonstrations
as WD9EWK during the morning on AO-51, SO-50, and VO-52 (look
for me around 145.915 MHz USB +/- on that downlink). Please
feel free to call me, if you hear me on those passes during
the morning.
More information about the hamfest is available at:
http://www.k7rdg.org/HamfestFlyer2009a.html
After the hamfest, I plan on taking a l-o-n-g drive before
returning home late Saturday evening. I have not decided on
that route, and where I might end up for other passes later in
the day (AO-27 in the afternoon, along with AO-51 and maybe one
SO-50 pass in the evening). I do plan on working those passes,
wherever I happen to be at those times. I'm open to suggestions
on which grid(s) I should try to route my drive through. :-)
(please send suggestions directly to me, and not to the list)
73!
Patrick WD9EWK/VA7EWK
http://www.wd9ewk.net/
------------------------------
Message: 12
Date: Tue, 28 Apr 2009 22:40:07 -0700
From: "Greg D." <ko6th_greg@xxxxxxx.xxx>
Subject: [amsat-bb] Re: A Fully Rechargeable Satellite Station
To: <n3tl@xxxxxxxxx.xxx>, <amsat-bb@xxxxx.xxx>
Message-ID: <BLU133-W13EB13D297FA1DA39B6B8BA96F0@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
Hi Tim,
This is great; I've thought about the off-grid aspects of the hobby as well
(but not done much about it yet).
One question... what accommodations have you made for the recharging of the
batteries? Given that AC power may not be available for some time (longer
than one charge), do you use a 12v (automobile) -> 120vac inverter and regular
charge equipment, or something custom? I know some radios can run from AA dry
cells (e.g. my Kenwood TH-D7, and the HP-100LX Palmtop which I can run
FODTrack on), but not the laptop.
Just curious,
Greg KO6TH
_________________________________________________________________
Rediscover Hotmail?: Get e-mail storage that grows with you.
http://windowslive.com/RediscoverHotmail?ocid=TXT_TAGLM_WL_HM_Rediscover_Stora
ge2_042009
------------------------------
Message: 13
Date: Wed, 29 Apr 2009 12:52:35 +0000
From: n3tl@xxxxxxxxx.xxx
Subject: [amsat-bb] Re: A Fully Rechargeable Satellite Station
To: "Greg D." <ko6th_greg@xxxxxxx.xxx>, <amsat-bb@xxxxx.xxx>
Message-ID:
<042920091252.5395.49F84D930005BDDC0000151322193100029B0A02D2089B9A019C0
4040A0DBF049BCC02@xxx.xxx>
Content-Type: text/plain; charset="utf-8"
Hey Greg,
In addition to the internal rechargeable pack, Yaesu provides a battery tray
for a "DIY" battery pack, and I have been assembling rechargeable individual
batteries for these trays. In the case of a longterm power outage, it occurs
to me that, as you suggest, a larger 12v battery could come into play. The
regular power supply I use in the shack includes the provision to connect a
gel cell battery for charging and backup, so that's one option. An auto
battery certainly is another although, I suspect I'd opt for a deep-cycle
marine battery (or batteries) if I was going to buy them for this use.
My intial plan would be to have enough internal-battery power to get through
at least two "cycles" (i.e., at least two battery packs ready to go for each
radio). The hope is that accesss to power from a generator or the larger
batteries would be available for recharging the batteries and powering the
radios.
As for the computer, the 6-cell pack that is available for the Acer is a
lithion ion pack that, when fully charged, provides up to six hours of
continuous use. Given the nature of our satellite passes - in chunks of 10-15
minutes - I have been able to make days worth of passes without a recharge. I
hope to pick up another 6-cell battery because I believe two of them would
provide the power necessary to handle things until power was available for
recharging.
Reading yours and some other comments have me thinking about a few more
elements I need to look into ... things I hadn't given much thought to, but
elements that would be helpful to know.
Both on and off the reflector, I've received multiple requests to write this
up for the Journal, and that's very gratifying. I'll definitely do that, and
thank everyone for their positive feedback.
73 to all,
Tim
-------------- Original message from "Greg D." <ko6th_greg@xxxxxxx.xxx>: -----
---------
>
> Hi Tim,
> This is great; I've thought about the off-grid aspects of the hobby as well
(but
> not done much about it yet).
> One question... what accommodations have you made for the recharging of the
batteries? Given that AC power may not be available for some time (longer than
one charge), do you use a 12v (automobile) -> 120vac inverter and regular
charge equipment, or something custom? I know some radios can run from AA dry
cells (e.g. my Kenwood TH-D7, and the HP-100LX Palmtop which I can run
FODTrack on),
> but not the laptop.
>
> Just curious,
>
> Greg KO6TH
>
>
> _________________________________________________________________
> Rediscover Hotmail?: Get e-mail storage that grows with you.
http://windowslive.com/RediscoverHotmail?ocid=TXT_TAGLM_WL_HM_Rediscover_Stora
ge
> 2_042009
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 14
Date: Wed, 29 Apr 2009 08:04:41 -0500
From: "Nick" <quadpugh@xxxxxxxxx.xxx>
Subject: [amsat-bb] looking for software
To: <amsat-bb@xxxxx.xxx>
Message-ID: <017501c9c8cb$0f9af6a0$2ed0e3e0$@xxx>
Content-Type: text/plain; charset="us-ascii"
Hi AMSATERS
I am looking for the software that the DELFI group wrote that shows the
Doppler shift for the pass of their sat.
Thanks
nick
------------------------------
Message: 15
Date: Wed, 29 Apr 2009 10:34:07 -0400
From: "Roger Kolakowski" <rogerkola@xxx.xxx>
Subject: [amsat-bb] Re: A Fully Rechargeable Satellite Station
To: <amsat-bb@xxxxx.xxx>
Message-ID: <006c01c9c8d7$8dccc1a0$0300a8c0@xxxxxxxx>
Content-Type: text/plain; charset="utf-8"
A quick inquiry about running a laptop directly off of a cigarette outlet in
the car...
for example...let's consider the HP/Compaq series of laptops that take
16-19V from their chargers/power supplies...
Can they be run directly from the auto's 13.6v supply...the available
amperage always made me nervous...as does the voltage swings when starting
and out of the regulator.
Roger
WA1KAT
----- Original Message -----
From: <n3tl@xxxxxxxxx.xxx>
To: "Greg D." <ko6th_greg@xxxxxxx.xxx>; <amsat-bb@xxxxx.xxx>
Sent: Wednesday, April 29, 2009 8:52 AM
Subject: [amsat-bb] Re: A Fully Rechargeable Satellite Station
> Hey Greg,
>
> In addition to the internal rechargeable pack, Yaesu provides a battery
tray for a "DIY" battery pack, and I have been assembling rechargeable
individual batteries for these trays. In the case of a longterm power
outage, it occurs to me that, as you suggest, a larger 12v battery could
come into play. The regular power supply I use in the shack includes the
provision to connect a gel cell battery for charging and backup, so that's
one option. An auto battery certainly is another although, I suspect I'd opt
for a deep-cycle marine battery (or batteries) if I was going to buy them
for this use.
>
> My intial plan would be to have enough internal-battery power to get
through at least two "cycles" (i.e., at least two battery packs ready to go
for each radio). The hope is that accesss to power from a generator or the
larger batteries would be available for recharging the batteries and
powering the radios.
>
> As for the computer, the 6-cell pack that is available for the Acer is a
lithion ion pack that, when fully charged, provides up to six hours of
continuous use. Given the nature of our satellite passes - in chunks of
10-15 minutes - I have been able to make days worth of passes without a
recharge. I hope to pick up another 6-cell battery because I believe two of
them would provide the power necessary to handle things until power was
available for recharging.
>
> Reading yours and some other comments have me thinking about a few more
elements I need to look into ... things I hadn't given much thought to, but
elements that would be helpful to know.
>
> Both on and off the reflector, I've received multiple requests to write
this up for the Journal, and that's very gratifying. I'll definitely do
that, and thank everyone for their positive feedback.
>
> 73 to all,
>
> Tim
------------------------------
Message: 16
Date: Wed, 29 Apr 2009 14:37:23 +0000
From: n3tl@xxxxxxxxx.xxx
Subject: [amsat-bb] Re: A Fully Rechargeable Satellite Station
To: "Roger Kolakowski" <rogerkola@xxx.xxx>, <amsat-bb@xxxxx.xxx>
Message-ID:
<042920091437.8497.49F866230000AB3F0000213122193100029B0A02D2089B9A019C0
4040A0DBF049BCC02@xxx.xxx>
Content-Type: text/plain
I'm not sure how fully this answers your question and/or addresses your
concern, but I've done a quick Google "poke around" and discovered a number of
"cigarette plug" power options for laptops that all appear to be of high
quality and rated to handle the power requirements in question.
I don't own such an adapter as I write this. But when I get one, I'll be as
certain as I can that it is intended to work with the laptop I plan to use.
Here, that most likely will be the Acer Aspire One. I hope this helps,
Tim
-------------- Original message from "Roger Kolakowski" <rogerkola@xxx.xxx>: -
-------------
> A quick inquiry about running a laptop directly off of a cigarette outlet in
> the car...
>
> for example...let's consider the HP/Compaq series of laptops that take
> 16-19V from their chargers/power supplies...
>
> Can they be run directly from the auto's 13.6v supply...the available
> amperage always made me nervous...as does the voltage swings when starting
> and out of the regulator.
>
> Roger
> WA1KAT
> ----- Original Message -----
> From:
> To: "Greg D." ;
> Sent: Wednesday, April 29, 2009 8:52 AM
> Subject: [amsat-bb] Re: A Fully Rechargeable Satellite Station
>
>
> > Hey Greg,
> >
> > In addition to the internal rechargeable pack, Yaesu provides a battery
> tray for a "DIY" battery pack, and I have been assembling rechargeable
> individual batteries for these trays. In the case of a longterm power
> outage, it occurs to me that, as you suggest, a larger 12v battery could
> come into play. The regular power supply I use in the shack includes the
> provision to connect a gel cell battery for charging and backup, so that's
> one option. An auto battery certainly is another although, I suspect I'd opt
> for a deep-cycle marine battery (or batteries) if I was going to buy them
> for this use.
> >
> > My intial plan would be to have enough internal-battery power to get
> through at least two "cycles" (i.e., at least two battery packs ready to go
> for each radio). The hope is that accesss to power from a generator or the
> larger batteries would be available for recharging the batteries and
> powering the radios.
> >
> > As for the computer, the 6-cell pack that is available for the Acer is a
> lithion ion pack that, when fully charged, provides up to six hours of
> continuous use. Given the nature of our satellite passes - in chunks of
> 10-15 minutes - I have been able to make days worth of passes without a
> recharge. I hope to pick up another 6-cell battery because I believe two of
> them would provide the power necessary to handle things until power was
> available for recharging.
> >
> > Reading yours and some other comments have me thinking about a few more
> elements I need to look into ... things I hadn't given much thought to, but
> elements that would be helpful to know.
> >
> > Both on and off the reflector, I've received multiple requests to write
> this up for the Journal, and that's very gratifying. I'll definitely do
> that, and thank everyone for their positive feedback.
> >
> > 73 to all,
> >
> > Tim
>
> _______________________________________________
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End of AMSAT-BB Digest, Vol 4, Issue 204
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