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CX2SA > SATDIG 30.04.09 01:06l 301 Lines 10385 Bytes #999 (0) @ WW
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Today's Topics:
1. Re: A Fully Rechargeable Satellite Station (Edward Cole)
2. Re: Question about building the "Cheap" Antenna by WA5VJB
(Rich Dailey (gmail))
3. Re: A Fully Rechargeable Satellite Station (Jack K.)
4. Re: May AO-51 schedule (Josh Smith)
5. AMSAT Dayton Room (Martha)
----------------------------------------------------------------------
Message: 1
Date: Wed, 29 Apr 2009 06:50:09 -0800
From: Edward Cole <kl7uw@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: A Fully Rechargeable Satellite Station
To: "Roger Kolakowski" <rogerkola@xxx.xxx>, <amsat-bb@xxxxx.xxx>
Message-ID: <200904291450.n3TEoAXD043099@xxxx.xxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
I have an old IBM thinkpad whose battery charger outputs 16vdc at
2.2amp. I cut the dc cord and installed some crimp-on eyelets so
that it could attach to a small two terminal strip for which I made a
cigarette lighter cord. I was able to run that computer charging off
my wife's Ford minivan for the 6000 mile trip from MS to AK in spring
of 2004. The vehicle voltage is damped by the car's battery and runs
about 14.2 volts when the engine is running and sags to 13.2v when
off. I never had the computer running when starting the engine. The
computer battery will also act as a huge capacitor for smoothing out
any voltage spikes.
I also ran my FT-817, 45w amp, KPC-3, and Garmin GPS from the car's
battery. The Garmin requires 3.2 volts which was easily provided
using a voltage-regulator.
Most cigarette lighters circuits have a 15 to 20 amp fuse on
them. That ought to work fine for charging/using with your computer.
73, Ed - KL7UW
At 06:34 AM 4/29/2009, Roger Kolakowski wrote:
>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
>
>_______________________________________________
>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: 2
Date: Wed, 29 Apr 2009 11:03:44 -0400
From: "Rich Dailey (gmail)" <redailey1@xxxxx.xxx>
Subject: [amsat-bb] Re: Question about building the "Cheap" Antenna by
WA5VJB
To: amsat-bb@xxxxx.xxx
Message-ID: <7.0.0.16.2.20090429110026.02769d48@xxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
At 08:52 PM 4/28/2009, you wrote:
>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?
Hi Marv - See the link below. The element is centered at the point midway
between
the free end and the most outward part of the bend where the matching length
heads back
toward the feedpoint.
That's about as complicated as I can put it - hi...
Rich, N8UX
------------------------------
Message: 3
Date: Wed, 29 Apr 2009 09:12:01 -0600
From: "Jack K." <kd1pe.1@xxxxx.xxx>
Subject: [amsat-bb] Re: A Fully Rechargeable Satellite Station
To: "Roger Kolakowski" <rogerkola@xxx.xxx>, <amsat-bb@xxxxx.xxx>,
"Edward Cole" <kl7uw@xxxxxxxxx.xxx>
Message-ID: <56132F22F5A141C6B6D700DF857762E8@xxxxxxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
To say I am amazed is not doing the English language justice, 6000 Miles
from Ms to AK must have been via a round about route indeed. My Driving
recollections would guess it is more like 3800 miles from St. Lou to
Anchorage... But then I was not in your mini van or shoes...
However the real comment is this, why don't you just get a 40 dollar
inverter, plug it into the ciggie lighter hole or hard wire it and you have
all the commercial type (117VAC) power you need, I ran one in my semi for
years, have one in my Dodge Nitro and it powers my Dell Laptop, The HP
printer/scanner I use for my business, charges my cell phone, razor and
anything else I need up to a 800 watts of power. Rather than trying to re
invent the wheel, why not use the technology that is available, and in
common usage by almost every truck driver in the USA.
DE Jack KD1PE
I was able to run that computer charging off
> my wife's Ford minivan for the 6000 mile trip from MS to AK in spring
> of 2004. The vehicle voltage is damped by the car's battery and runs
> about 14.2 volts when the engine is running and sags to 13.2v when
> off. I never had the computer running when starting the engine. The
> computer battery will also act as a huge capacitor for smoothing out
> any voltage spikes.
>
> Most cigarette lighters circuits have a 15 to 20 amp fuse on
> them. That ought to work fine for charging/using with your computer.
>
> 73, Ed - KL7UW
>
------------------------------
Message: 4
Date: Wed, 29 Apr 2009 13:50:08 -0400
From: Josh Smith <juicewvu@xxxxx.xxx>
Subject: [amsat-bb] Re: May AO-51 schedule
To: Luc Leblanc <lucleblanc6@xxxxxxxxx.xx>
Cc: amsat-bb@xxxxx.xxx
Message-ID:
<d3bf5a870904291050l687503f2p3faa7d03301b06e0@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
I agree with LUC it would be very interesting if the ouput power was
published when it was changed.
Thanks,
Josh Smith
KD8HRX
email/jabber: juicewvu@xxxxx.xxx
phone: 304.237.9369(c)
() ascii ribbon campaign - against html e-mail
/\ www.asciiribbon.org - against proprietary attachments
On Tue, Apr 28, 2009 at 11:11 PM, Luc Leblanc <lucleblanc6@xxxxxxxxx.xx>
wrote:
> 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
>
>
> _______________________________________________
> 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: 5
Date: Wed, 29 Apr 2009 14:47:26 -0400
From: Martha <martha@xxxxx.xxx>
Subject: [amsat-bb] AMSAT Dayton Room
To: amsat-bb@xxxxx.xxx
Message-ID:
<956751cf0904291147i64a0a6f7l32d21f2f2e05b2ab@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
One of our overseas participants has had to cancel his trip to Dayton.
Before I call the hotel to cancel his room, is anybody interested in it?
Please call me at 301-589-6062
--
73- Martha
------------------------------
_______________________________________________
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 205
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