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ZL3AI > APRDIG 21.06.03 20:18l 249 Lines 9746 Bytes #999 (0) @ WW
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From: ZL3AI@ZL3VML.#80.NZL.OC
To : APRDIG@WW
Subject: Subject: Re: GPS Data to APRS+SA - was GPS DATA TO WinAPRS
From: Paul Jacques <paulj@rain.org>
Date: Tue, 17 Jun 2003 08:31:20 -0700
X-Message-Number: 12
Does APRS+SA have a way to input the GPS plugged into the D700 so that
you can plot your posit and the others received? I only have one port on
my notebook and I need that for the D700.
Paul
WB6IWT
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Subject: Re: PIC accessory for Mobile APRS
From: "Sean \\The RIMBoy\\" <sean@rimboy.com>
Date: Tue, 17 Jun 2003 10:14:28 -0500 (CDT)
X-Message-Number: 13
On Tue, 17 Jun 2003, Robbie wrote:
>Paul et all,
>
>Along while back, some one listed ALL commands that the KW D-700 would
>respond to over the serial port while the D-700 was not in TNC mode. One
>of these commands was to instruct the radio to go to a specific
>frequency, and other command to turn on the TNC to either mode..
>
>Wish I could find that list again or the cool program the fellow wrote
>to use those commands, :-)
If you're talking about the Linux program, it's called Konweed.
Unfortunately I've not been able to make it work under RH 7.3. Apparently
the D700 uses a lot of the same commands as the D7 and was the starting
point for the Konweed project. I've yet to sit down and look at the
Konweed code to see if I cannot make heads and tails of it. The thought
of controlling my D700 via remote X is very very appealing.
Sean...
--
Believing I had supernatural powers, I slammed into a brick wall.
--Paul Simon
_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_
KG4NRC http://www.rimboy.com Your source for the crap you know you need.
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Subject: Re: Field Day Water Power
From: David VanHorn <dvanhorn@cedar.net>
Date: Tue, 17 Jun 2003 11:13:39 -0500
X-Message-Number: 14
>>If it were ideal, you would squirt the water at the vanes, and the water
>>would shed the energy and fall directly downward, out of the way...
>>Hmm, or even bounce back in a rebound but miss the other vanes as it
>>falls!
>
>Yep, thats exactly what happens. And that's why it falls out the
>center... with minimum emergy...
You get the same problem with windmills. The most energy you can extract is
about 1/3 the available energy.
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Subject: Re: Tiger/Line Data Map Viewer
From: "Curt Mills, WE7U" <hacker@tc.fluke.com>
Date: Tue, 17 Jun 2003 09:57:23 -0700 (PDT)
X-Message-Number: 15
On Tue, 17 Jun 2003, Jason Rausch wrote:
>Does anyone know of a good, FREE viewer for the Tiger/Line Data OTHER than
>WinAPRS?
Well, sort'a. Xastir can use the Tiger/Line data that's been converted to
ESRI Shapefile format. Xastir is free and runs on lots of platforms. It
can't directly use the Tiger/Line files themselves though.
Tiger/Line data converted to Shapefiles is freely available. The Xastir
docs specify a couple of places to get the data.
If you'd like to see a screenshot of what Xastir looks like with Tiger
data, I can provide that.
--
Curt Mills, WE7U hacker_NO_SPAM_@tc.fluke.com
Senior Methods Engineer/SysAdmin
"Lotto: A tax on people who are bad at math!"
"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: Field Day Water Power
From: "Doug Younker" <dougy@ruraltel.net>
Date: Tue, 17 Jun 2003 12:43:36 -0500
X-Message-Number: 16
Well in reversing the flow through the pump you are using outlet as the
input and the only path for the water to escape is the pump's normal input
and in a centrifugal pump that is at the center of the impeller. In
reversing the flow the water, the impeller doesn't need to turn for the
water to find a path out of the pump. The more I picture it in my mind
Richard Amirault is correct in questioning the need to use the pump
backwards. Not only is the energy source free, the salvage pump should
nearly be so, awaiting Bob's results.--73
Doug, N0LKK
dougy@ruraltel.net
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Subject: Re: aprssig digest: June 15, 2003
From: "Demetre Valaris" <sv1uy@sv1uy.ampr.org>
Date: Tue, 17 Jun 2003 21:13:42 +0300
X-Message-Number: 17
>Subject: Re: VOICE ALERT for Europe From: Henk de Groot
>Date: Sun, 15 Jun 2003 21:32:54 +0200
>
>At 10:39 13-6-03 -0400, Alex wrote:
>>I see. The 2896000th harmonic of 50Hz is right on 144.800Mhz. Who
>>would've thunk. And there are at least a 100 of 'em in an FM receiver's
>>passband. Phew, I'm glad I don't live in Europe.
>
>But 100 Hz is quite common! When you rectify a 50 Hz Sine wave through a
>Graetz rectifier or a two diode double phase rectifier then you get a huge
>100 Hz component:
>
[stuff deleted]
>I have CTCSS at 100 Hz and in the North part of our country I experienced
>that packet broke through, although I didn't find any evidence that this was
>somebody with voice alert. The packets were too frequently and it lasted
>over quite some distance; it looked more like a digi that emits 100 Hz
>toghether with its signal. So it does occur... Of course the best way is not
>to change the CTCSS setting but fix those stations. I don't think you get
>any 100 Hz directly from the power distribution system. That's the only
>place were I have expericed false alerts, in other places 100 Hz CTCSS works
>just fine.
>
>Kind regards,
>
>Henk.
Hi Henk,
I have noticed exactly the same thing with both my TH-D7 and TM-D700 when I
used 100Hz for VOICE alert in Athens. I heard a few DIGIS opening my
SQUELCH so I guess their PSUs must be poorly filtered! I know this is true
since I saw their CALLSIGN on the DISPLAY of my Radio.
So I now use CTCSS 136.5 HZ all the time and I have not seen the same
behaviour not even once with my TM-700. No more false PACKETS with this
setting. I do advertise this in my BEACON LINE.
I do get a few half/broken packets with my TH-D7 even with a CTCSS setting
of 136.5 HZ but this is not the same DIGIs with the badly filtered PSUs but
some kind of breakthrough, maybe cross modulation.
Have you noticed a similar behaviour with your TH-D7 Henk???
Anyway, what do you think about the 136.5 HZ for VOICE ALERT in Europe Henk?
===
73 de Demetre SV1UY
e-mail: sv1uy at sv1uy.ampr.org
PACKET MAIL: SV1UY@SV1UY.ATH.GRC.EURO
http://www.athnet.ampr.org/~sv1uy
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Subject: Garmin GPS/FRS combo
From: Bob Bruninga <bruninga@usna.edu>
Date: Tue, 17 Jun 2003 14:21:12 -0400 (EDT)
X-Message-Number: 18
Good news! The RINO is either 1200 or 600 baud!
I re-captured a complete burst at the discriminator and it is 275 ms long
but has a transition every 1.625 mS which is 600 transitions per second.
If this is only 600 baud, it is 20 bytes... or it could be 1200 baud
manchester and 40 bytes.
It is saved as a TEXT file of data points, so anyone can take a crack at
it or bring it into EXCEL to decode. See the file:
http://www.ew.usna.edu/~bruninga/Rinoall.txt
If we could decode this in a SOUND CARD, it would revolutionize APRS,
becasue for $170 then HAMs could buy an all-in-one handheld Radio/GPS that
we could use for public service. We could receive all the RINO posits and
feed it into the APRS system for display throughout an event.
In the file, the first column is the sample number, the second
column is the sampled data, and the 3rd column is the unused channel 2 of
the digital Oscope (you can throw that one away)...
In the middle is a long string of identical bits. These could be the
LAT/LONG which is probably all zeroes because the RINO was indoors. The
only other known bytes would be the "name" given to this RINO. It was
"AJ________". That is the call my son used and it is in a 10 byte
"name" field.
If there is (by chance) position data, then our LAT/LONG the last time it
saw satellites was about 38 59 North and 76 29 West.
de WB4APR, Bob
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Subject: Re: Field Day Water Power
From: "Mike Yetsko" <myetsko@insydesw.com>
Date: Tue, 17 Jun 2003 14:23:53 -0400
X-Message-Number: 19
>Well in reversing the flow through the pump you are using outlet as the
>input and the only path for the water to escape is the pump's normal input
>and in a centrifugal pump that is at the center of the impeller. In
>reversing the flow the water, the impeller doesn't need to turn for the
>water to find a path out of the pump. The more I picture it in my mind
>Richard Amirault is correct in questioning the need to use the pump
>backwards. Not only is the energy source free, the salvage pump should
>nearly be so, awaiting Bob's results.--73
>Doug, N0LKK
I think it would depend on the design of the pump. Some people are
assuming that putting the water 'back in' will hit the vanes and cause
them to rotate. That would only be true if the exit path was tangential
to the 'rim' of the impeller. If there was a salvage ring around the
impeller, then the water coming in the normal exhaust might not have
any, or at least significant flow in the right direction to run the pump.
Remember, the pump was designed to pump water one way. Normally
it would suck at the center, then the disk spins it out (and it may not
even
have blades in a debris pump) and then exhaust it. Unless you know
how the exhaust was extracted from the chamber, you can't say the
pump would or wouldn't work.
Mike
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