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ZL3AI > APRDIG 19.01.04 18:23l 227 Lines 9223 Bytes #999 (0) @ WW
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To : APRDIG@WW
TAPR APRS Special Interest Group Digest for Friday, January 16, 2004.
1. Fw: [Iaem-list] Interoperability with Amateur Radio Emergency Communications
- Weds January 14 - 12:00 Noon EST
2. Digital HF QRP?
3. Re: Digital HF QRP?
4. Re: Digital HF QRP?
5. Re: Digital HF QRP?
6. Re: Digital HF QRP?
7. Re: Digital HF QRP?
8. Re: Digital HF QRP?
9. Re: NMEA questions
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Subject: Fw: [Iaem-list] Interoperability with Amateur Radio Emergency
Communications - Weds January 14 - 12:00 Noon EST
From: "Spider" <spider@rivcom.net>
Date: Fri, 16 Jan 2004 10:43:04 -0700
X-Message-Number: 1
FYI.....
----- Original Message -----
From: "emforum" <amoore@emforum.org>
To: "IAEM Posts List" <iaem-list@iaem.com>
Sent: Friday, January 16, 2004 8:02 AM
Subject: [Iaem-list] Interoperability with Amateur Radio Emergency
Communications - Weds January 14 - 12:00 Noon EST
PLEASE NOTE: This is a PUBLIC discussion list; information shared on this
list is NOT secure ..........................................
Interoperability with Amateur Radio Emergency Communications
January 14, 2004 -- 12:00 Noon Eastern Time
The EIIP is pleased to host a 'live chat' presentation and interactive Q&A
session, January 21st, 12:00 Noon Eastern (please convert to your local
time). Our topic will be how the traditional role of amateur radio support
for emergency communications is adapting to the age of interoperability.
This overview will include key organizations and recent examples as well.
Our guest Lloyd Colston, is well-rounded in both emergency management and
amateur radio, having come up through the ranks of the amateur radio
community, trained as a storm spotter, Emergency Medical Technician, EMT
instructor, emergency management volunteer, and EMA director. He is active
in a wide variety of organizations, and also serves as trainer, Public
Information Officer, and member of the Disaster Medical Assistance Team
(DMAT) in Oklahoma.
Our second guest will be Steve Ewald, Supervisor of the American Radio Relay
League (ARRL) Field Organization/Public Service Team at ARRL Headquarters in
Newington, Connecticut. Steve helps provide administrative support and
guidance to the ARRL Field Organization and the volunteer ARRL "Section
Leaders" across the country. He works with participants in the
ARRL-sponsored Amateur Radio Emergency Service (ARES) and other radio
amateurs that are involved in many facets of public service communications.
Please make plans to join us for this update on a valued service to
emergency managers and the public. See the Background Page for related
links, further biographical information, and instructions for participating
(especially if this will be your first time) - http://www.emforum.org . To
login, click on the "Chat Login' link and follow instructions.
This educational opportunity is brought to you by the Emergency Information
Infrastructure Partnership (EIIP). If interested in partnering with the
EIIP, please see the Partnership link on the EIIP Virtual Forum homepage
http://www.emforum.org .
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Subject: Digital HF QRP?
From: "Scott Miller" <scott@opentrac.org>
Date: Fri, 16 Jan 2004 13:52:41 -0800
X-Message-Number: 2
What currently exists for portable digital HF? Kind of looks like I'd have
to haul a laptop and QRP rig along and maybe run PSK31 or something similar,
and keyboard-to-keyboard's not really what I'm looking for.
What I'd LIKE to see is an automated store-and-forward messaging system...
something that'd let me have a simple terminal/QRP xcvr combo that I could
carry while backpacking, throw a dipole up in a tree, and get email with.
And when sending messages, it'd sit there all night waiting for the right
propagation and retrying if necessary.
Are there any non-PC based PSK31 solutions? Any similar modes that might be
appropriate?
Scott
N1VG
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Subject: Re: Digital HF QRP?
From: Jeff King <jeff@aerodata.net>
Date: Fri, 16 Jan 2004 17:02:00 -0600 (CST)
X-Message-Number: 3
I'm not aware of any non-PC based PSK31 solutions. SCS is the big name in
hardware based amateur HF modems, mostly Pactor stuff:
http://www.scs-ptc.com
You might want to look at WinLink and AirMail (which have links off the above
site) because what you are describing sounds alot like what they already do.
BTW, I've had real good luck with the Warbler, which is a 80 meter PSK31
transicver.... kit cost me $35 although they raised them to $45 now.
http://www.njqrp.org/warbler/
My best DX so far is about 700 miles, on both PSK31 and MFSK16. Love to try
a QSO with you if your interested, it is hooked up all the time so if I am
in the shack, drop me a note and I'll look for you on the waterfall. I'm
limited to 3580 to about 3851khz however.
As far as alternatives, and this would be roll your own, the only thing
that comes to mind is Q15X25, which is integrated into the Linux Kernel.
You might be able to devise a e-mail solution using this. But Winlink would
be turnkey for what you want, the only downside is the modems are
expensive.
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Subject: Re: Digital HF QRP?
From: "Scott Miller" <scott@opentrac.org>
Date: Fri, 16 Jan 2004 15:27:53 -0800
X-Message-Number: 4
>BTW, I've had real good luck with the Warbler, which is a 80 meter PSK31
>transicver.... kit cost me $35 although they raised them to $45 now.
I think I might get one of those, just to play around with.
>be able to devise a e-mail solution using this. But Winlink would be turnkey
>for what you want, the only downside is the modems are expensive.
Expensive is bad. I'm not so much interested just for my own use... it's
something I think would be useful for a lot of people if it was cheap and
simple. As you can probably tell from my OpenTracker design, I favor
keeping complexity in software, where it can be duplicated cheaply. Keep
the hardware simple and cheap, and figure out how to get the most out of it.
PSK31 would be better than PACTOR because, as I understand it, you could get
better channel utilization out of it. And this would be only for low-speed
text messaging, not file transfers or keyboard-to-keyboard. I imagine
having a box with something like the Warbler integrated with a DSP engine,
and having a small LCD display and keyboard. You'd put up an antenna, and
it'd send out a ping on one of a given set of input channels. Multiple base
stations, interconnected by Internet or higher speed RF links would work
together to acknowledge your station, assign a channel/timeslot, and dole
out any queued messages. More like an alphanumeric paging service than a
BBS, really.
Operation would be totally unattended, letting you use a slow link as
efficiently as possible, not having to worry about latency and ARQ
turnaround time. Just check the box in an hour or so and see if it's got
anything. Maybe I ought to check with the PropNET guys... this is actually
closer to what they're doing than VHF APRS, I suppose.
Anyway, I guess it's something to put on my list to check out when I get
some more DSP experience...
Scott
N1VG
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Subject: Re: Digital HF QRP?
From: "Scott Miller" <scott@opentrac.org>
Date: Fri, 16 Jan 2004 16:05:15 -0800
X-Message-Number: 5
>I'm not aware of any non-PC based PSK31 solutions. SCS is the big name in
>hardware based amateur HF modems, mostly Pactor stuff:
Found one...
http://www.njqrp.org/portablepsk/
Not quite as portable as I'd hoped, but it's definitely a step in the right
direction. And it's not going to be cheap with a complete Motorola DSP eval
board inside...
Scott
N1VG
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Subject: Re: Digital HF QRP?
From: "Curt, WE7U" <archer@eskimo.com>
Date: Fri, 16 Jan 2004 16:16:00 -0800 (PST)
X-Message-Number: 6
On Fri, 16 Jan 2004, Scott Miller wrote:
>>I'm not aware of any non-PC based PSK31 solutions. SCS is the big name in
>>hardware based amateur HF modems, mostly Pactor stuff:
>
>Found one...
>
>http://www.njqrp.org/portablepsk/
>
>Not quite as portable as I'd hoped, but it's definitely a step in the right
>direction. And it's not going to be cheap with a complete Motorola DSP eval
>board inside...
Do any of the Linux-capable PDA's (Sharp/Ipaq) have sound capability
which might work to port the soundcard stuff to? Might be another
option that would be the ultimate in portability. Just need to hook
a radio to it and you'd be all set.
Another possibility would be a subnotebook form factor.
-----------------------------------------------------------------
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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