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ZL3AI > APRDIG 01.04.04 15:45l 266 Lines 9415 Bytes #999 (0) @ WW
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From: ZL3AI@ZL3VML.#80.NZL.OC
To : APRDIG@WW
Subject: Re: New tracker design suggestions
From: David VanHorn <dvanhorn@cedar.net>
Date: Mon, 29 Mar 2004 15:08:08 -0500
X-Message-Number: 38
At 02:49 PM 3/29/2004 -0500, David VanHorn wrote:
>At 11:26 AM 3/29/2004 -0800, Scott Miller wrote:
>
>>>FYI, off the shelf D cell alkalines are *way* better then D cell NiMH.
>>>A Dcell alkaline has a AMP/Hour rating of 17, the NiMH has a rating
>>>of 7 amp hours.
>
>http://www.zbattery.com/mh-2d110.html 11AH nimh
At this point, I'd debate the "memory free" claim.
I've demonstrated memory in Panasonic and Sanyo NIMH cells, which isn't all
that surprising in that the makers say it's real. I think it's there in
any Nickle based chemistry.
One of these days, when I get a minute, I have some GP NIMH cells to test.
GP says they do not have memory.
It's not that big a deal though, just a blip on the delta voltage curve.
http://www.dvanhorn.org/NIMH/Memory-HRAUC-10.pdf
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Subject: Re: New tracker design suggestions
From: David VanHorn <dvanhorn@cedar.net>
Date: Mon, 29 Mar 2004 15:11:51 -0500
X-Message-Number: 39
>If I do provide an unregulated battery input option, is it likely to cause
>any problems if the linear regulator is left in the circuit? Will it care
>that it's got a voltage on the output and not on the input?
Many do, if the input becomes shorted, or has a large discharged cap. You
can put a back-diode across the input and output to keep that from being a
problem. Of course then you have to think about the current into a short on
the input.. Isn't design work fun? :)
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Subject: Re: New tracker design suggestions
From: "Curt, WE7U" <archer@eskimo.com>
Date: Mon, 29 Mar 2004 13:11:10 -0800 (PST)
X-Message-Number: 40
On Mon, 29 Mar 2004, Jeff King wrote:
>Me? I'd just put a battery holder in it and use whatever the mission was best
>suited for. At Dayton, I use alkaline batteries for my HT, even though I also
>have a recharable pack.
When I'm out in the woods with my bow, GPS, flashlight, and HT, I'm running
alkaline AA's. Same idea. Long runtime with least weight. No, my bow
doesn't take batteries. State game department won't let me!
--
Curt, WE7U archer at eskimo dot com
Arlington, WA, USA http://www.eskimo.com/~archer
"Lotto: A tax on people who are bad at math." -- unknown
"Windows: Microsoft's tax on computer illiterates." -- WE7U
"The world DOES revolve around me: I picked the coordinate system!"
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Subject: Re: New tracker design suggestions
From: David VanHorn <dvanhorn@cedar.net>
Date: Mon, 29 Mar 2004 16:27:22 -0500
X-Message-Number: 41
At 01:11 PM 3/29/2004 -0800, Curt, WE7U wrote:
>On Mon, 29 Mar 2004, Jeff King wrote:
>
>>Me? I'd just put a battery holder in it and use whatever the mission was best
>>suited for. At Dayton, I use alkaline batteries for my HT, even though I also
>>have a recharable pack.
>
>When I'm out in the woods with my bow, GPS, flashlight, and HT, I'm
>running alkaline AA's. Same idea. Long runtime with least weight.
>No, my bow doesn't take batteries. State game department won't let
>me!
No power winch for the crossbow?!
Weiners! :)
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Subject: RE: UAIS Position decoder
From: WB4GQK@aol.com
Date: Mon, 29 Mar 2004 16:53:10 EST
X-Message-Number: 42
>I believe someone here on the SIG posted recently that they had
>successfully decoded the UAIS/AIS/DSC position "packet" that is used on
>marine VHF.
>The below URL goes into some detail about the information encoded in the
>UAIS packet, but the GMSK 9600bps signal is not my forte' so I'd
>appreciate hearing about any success with a TNC in at least demodulation
>of the packets.
Hi Allen et all,
I think that must have been me. I have been using a registered copy of
RadioRaft to display the transmitted packets, and all I have been doing for
the past few months is just a quick look at the LAT/LON data field. I guess
if you do it enough you can just glance at that data field and know that
"something" is at that location.
What I have ended up doing is just placing a "MARK" on my navigation
software display, nothing more than an alert. I am using THE CAP'N Voyager
Mosaic ver 7.2. It's unfortunate I have to do it manually but I only an
wary when I am in the shipping channels or crossing them. But the scary
part is the tugs that are pulling barges 1000' behind them! Believe me they
cut corners! Most of them can run in 15' of water.
It would be really great to be able to have a look up table that could
convert the vessel description (Tanker/Car
carrier/Passenger/Tug-Barge/Container whatever) into some kind of an icon.
I am using a Icom M602 VHF radio connected to the VHF port of a Kam+ into
my laptop. That part works great and I can pass the GPS data to CAP'N/ HF
APRS/ and to the ICOM M602 just in case I need to hit the DSC Distress
button! The Icom marine SSB M800 transmitts the APRS data just great. My
SSB is not equipped for DSC Distress but I believe that since I have the
GPS data already available for APRS it should be able to able to transmit
the posit data over the DSC frequency. I have no way to test this function.
Now if it were just possible to decipher only say 5-6 of the datafields and
overlay the results on the navigation screen chart of The CAP'N it would be
a Godsend!
Thanks
Jim
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Subject: Re: New tracker design suggestions
From: "Scott Miller" <scott@opentrac.org>
Date: Mon, 29 Mar 2004 14:36:16 -0800
X-Message-Number: 43
>AAs make a lot of sense. I'm trying to keep all my emergency gear in AAs.
>
>The only exception at the moment is flashlights, which are running 123s
>and D cells, which I carry spares of.
Same here.
I've been thinking about consolidating some of the gadgets into one package.
I'm thinking a combination walking stick/flashlight/strobe would be cool:
http://www.laurelindorenan.com/Gandalf%2012.jpg
And with a 2-axis accelerometer, I could eliminate external switches and
make all of the features controlled by gestures or taps!
A signal flare launcher might be pushing it.
Scott
N1VG
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Subject: Re: New tracker design suggestions
From: "Curt, WE7U" <archer@eskimo.com>
Date: Mon, 29 Mar 2004 14:53:59 -0800 (PST)
X-Message-Number: 44
On Mon, 29 Mar 2004, Scott Miller wrote:
>>AAs make a lot of sense. I'm trying to keep all my emergency gear in AAs.
>
>Same here.
>
>I've been thinking about consolidating some of the gadgets into one package.
>I'm thinking a combination walking stick/flashlight/strobe would be cool:
>http://www.laurelindorenan.com/Gandalf%2012.jpg
>
>And with a 2-axis accelerometer, I could eliminate external switches and
>make all of the features controlled by gestures or taps!
>
>A signal flare launcher might be pushing it.
Yea, and dangerous!
Makes me think though of the APRS-equipped Olympic torch... How
about a walking stick/flashlight/strobe/tracker/GPS, with a
blue-tooth connection to your PDA for spitting out the GPS readings
and APRS messaging/mapping?
Have that done by friday?
--
Curt, WE7U archer at eskimo dot com
Arlington, WA, USA http://www.eskimo.com/~archer
"Lotto: A tax on people who are bad at math." -- unknown
"Windows: Microsoft's tax on computer illiterates." -- WE7U
"The world DOES revolve around me: I picked the coordinate system!"
----------------------------------------------------------------------
Subject: Re: New tracker design suggestions
From: David VanHorn <dvanhorn@cedar.net>
Date: Mon, 29 Mar 2004 18:19:58 -0500
X-Message-Number: 45
>Makes me think though of the APRS-equipped Olympic torch... How
>about a walking stick/flashlight/strobe/tracker/GPS, with a
>blue-tooth connection to your PDA for spitting out the GPS readings
>and APRS messaging/mapping?
>
>Have that done by friday?
If you don't care what the proto costs, yes.
Plastic tooling for production roughly $50k, plus industrial design.
I have Zeevo Zerial modules in hand, and the rest is firmware and duct tape.
But, I have other commitments this week.
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Subject: Re: New tracker design suggestions
From: "Spider" <spider@rivcom.net>
Date: Mon, 29 Mar 2004 16:50:44 -0700
X-Message-Number: 46
When are you going to be done with this thing? And what protocol are your
going to use? Or is it a brand new protocol?
Jim, WA6OFT
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Subject: FIRE Watches, Warnings, etc
From: "Spider" <spider@rivcom.net>
Date: Mon, 29 Mar 2004 17:00:38 -0700
X-Message-Number: 47
As summer quickly approaches, Fire watches and warnings become an important
issue for many in the USA.
Fire Warnings and Watches, etc., can be seen on FireNet. This is a FireNet
service provided by the Wxsvr.
If these are of interest to you can connect up to any of the FireNet servers
and see them!
Jim, WA6OFT
FireNet Coordinator
FIRENET: http://www.dwrracesupport.com/fire
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