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ZL3AI > APRDIG 23.09.06 23:22l 269 Lines 8670 Bytes #999 (0) @ WW
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Subj: [APRSSIG] Vol 27 #22, 3/4
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From: ZL3AI@ZL2BAU.#87.NZL.OC
To : APRDIG@WW
Message: 17
Date: Wed, 20 Sep 2006 19:55:48 -0400
From: Jim Campbell <jim_c_at_bellsouth.net>
Subject: Re: [aprssig] Inexpensive Deviation Meter
Thanks Alan. The MFJ meter isn't available anymore either.
As to my radio, my station is a mix and match affair. I have four
two-meter transcievers and two TNCs and a tracker. I have cables made up
so that any TNC/Tracker can drive any radio. Sure makes setting up the
correct deviation interesting. That's why I was looking for an inexpensive
meter.
Thanks again,
Jim
W4BQP
------------------------------
Message: 18
Date: Thu, 21 Sep 2006 00:06:11 -0000
From: "Alan P. Biddle" <APBIDDLE_at_MAILAPS.ORG>
Subject: RE: [aprssig] Inexpensive Deviation Meter
Jim,
This appears to be it:
http://www.mfjenterprises.com/products.php?prodid=MFJ-224
Alan
WA4SCA
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Message: 19
Date: Wed, 20 Sep 2006 20:20:17 -0400
From: "Robert Bruninga" <bruninga_at_usna.edu>
Subject: RE: [aprssig] RE: New EU Paradigm
For Europe:
>Well fine, but then it wouldn't hurt to
>_start_ making WIDEn-N traceable too, and
>going forward encourage users to use WIDEn-N.
>And that way eventually (painlessly) phase out
>TRACEn-N and RELAY as in North America...
| Ah, but that is the -big- problem and why there
| are no easy answers. Most digipeaters in
| Europe are just UIview and Uiview just like
| the KPC3 over here, only traces on one callsign
| So there is no easy transition.
|
| Let me make it clear why I have accepted the
| compromised solution:
|
| 1) In the USA, all it takes is changing the DIGIS,
| and ALL THE DIGIS had to be changed anyway... So
| it was easy to swap WIDEn-N in place of TRACEn-N
| in all digis. And many DIGI systems are owned
| operated by a few sysops.
|
| 2) In Europe, there are few central HIGH digis.
| Most digis are just HOME stations. Thus, to replace
| TRACEn-N in every such home station Uiview with
| WIDEn-N traceability simply would never happen.
| Just like moving a mountain.
|
| So I agree, it would be nice if they all changed,
| but I realized it simply would never happen, so
| it is better for APRS to WORK well in Europe
| *now* than to hope that everyone would change and
| some day in the far distant future they would
| all be WIDEn-N.
|
| Hope that helps.
|Bob, WB4APR
>>| Actually Andy has an EXCELLENT point. The Europeans
>>| don't have to really do anything, leave their network
>>| alone. It supports TRACEn-N and WIDEn-N. But they
>>| should encourage everyone to use TRACEn-N since it is
>>| traceable and WIDEn-N is not (over there).
>>|
>>| Then they can also phase out RELAY since WIDE1-1 also
>>| works there....
>>
>>Bob, WB4APR
------------------------------
Message: 20
Date: Wed, 20 Sep 2006 17:23:52 -0700
From: Dale Blanchard <wa7ixk_at_earthlink.net>
Subject: Re: [aprssig] Inexpensive Deviation Meter
Jim Campbell wrote:
>Thanks Alan. The MFJ meter isn't available anymore either.
>
>As to my radio, my station is a mix and match affair. I have four
>two-meter transcievers and two TNCs and a tracker. I have cables made
>up so that any TNC/Tracker can drive any radio. Sure makes setting up
>the correct deviation interesting. That's why I was looking for an
>inexpensive meter.
>
>Thanks again,
>
>Jim
>W4BQP
Many years ago I tapped off the 455kc IF on my scanner and fed it to my
oscilloscope.
I would calibrate with a commercial repeater.
The Police frequencies were right on.
I could even see the PL tones and set them.
It would show thew whole 7 KC bandpass of the scanner on the scope.
It was easy to guesstimate things.
WA7IXK
Dale
------------------------------
Message: 21
Date: Thu, 21 Sep 2006 00:26:59 -0000
From: "Alan P. Biddle" <APBIDDLE_at_MAILAPS.ORG>
Subject: RE: [aprssig] Inexpensive Deviation Meter
Of course, you can always calibrate by finding the zeroes in the Bessel
function. Easy to do, though conceptually more than most hams deal with.
;)
Alan
WA4SCA
------------------------------
Message: 22
Date: Wed, 20 Sep 2006 17:44:58 -0700
From: Dale Blanchard <wa7ixk_at_earthlink.net>
Subject: Re: [aprssig] Inexpensive Deviation Meter
Alan P. Biddle wrote:
>Of course, you can always calibrate by finding the zeroes in the Bessel
>function. Easy to do, though conceptually more than most hams deal with.
>;)
>
>Alan
>WA4SCA
When I get it close that is good enough.
I should be able to do it with my computer and sould card
but I am to old to figure it out.
Dale
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Message: 23
Date: Wed, 20 Sep 2006 21:23:28 -0400
From: "Robert Bruninga" <bruninga_at_usna.edu>
Subject: RE: [aprssig] RE: New EU Paradigm
Wow, do I feel dumb...
I thought the final New-EU paradigm we eneded up with last time was for
TRACEn-N. Boy was I surprised when I just checked and found my
New-EU-Paradigm WEB page was recommending WIDEn-N eventually. I'm floored.
I don't know what to say. I'll just butt out until the powers that be in
Europe tell me which way they want to go.
All I want is for there to be a common and consistent system in Europe to
simplify APRS for everyone. But WIDE and TRACE (and possibly RELAY are
obsolete) and what ever they decide for an n-N system, it must be
traceable.
But if I was to kibitz, it would be WIDE1-1,WIDEn-N or the easier way out
is to use WIDE1-1,TRACEn-N and that way let their system support BOTH,
while also getting rid of the obsolete RELAY, WIDE and TRACE paths while
providing full traceability AND the provision for WIDE1-1 to replace
RELAY... And then encourge everyone to use TRACEn-N or WIDE1-1,TRACEn-N if
they need a supporting first hop.
Bob, WB4APR
------------------------------
Message: 24
Date: Wed, 20 Sep 2006 19:29:03 -0700 (PDT)
From: "Tyson S." <timbercutter_at_yahoo.com>
Subject: Re: [aprssig] Kenwood TK-760
--- Earl Needham <needhame1_at_plateautel.net> wrote:
>That sounds pretty neat, but what does it do if you're talking at the time?
>
>Earl
If I remember right you can program the thing to ignore the external PTT if
the Mic PTT is pressed, you can also program it to ignore ext. PTT if
anyone of your voice channels is indicating busy because of incoming audio
transmission. This way the AVL won't interrupt your voice communication. It
will wait for it's turn to talk. The Kenwood AVL is high dollar high tech
stuff, something like $1,500.00 per modem per vehicle install. It runs at
2400 baud MSK data format.
------------------------------
Message: 25
Date: Wed, 20 Sep 2006 19:58:19 -0700
From: <scott_at_opentrac.org>
Subject: RE: [aprssig] Kenwood TK-760
Well, I can see why there's interest in using the OpenTracker with it at
that price!
I'm going to have to do some more exhaustive testing to see if I can get the
OpenTracker reliably running with 1-second timeslot spacing. No reason it
shouldn't work, especially with everyone using the same model GPS receiver,
it's just a matter of making sure the tracker has a fix ready to send when
the slot comes up.
Scott
N1VG
>If I remember right you can program the thing to ignore the external
>PTT if the Mic PTT is pressed, you can also program it to ignore ext.
>PTT if anyone of your voice channels is indicating busy because of
>incoming audio transmission. This way the AVL won't interrupt your
>voice communication. It will wait for it's turn to talk. The Kenwood
>AVL is high dollar high tech stuff, something like $1,500.00 per modem
>per vehicle install. It runs at 2400 baud MSK data format.
------------------------------
Message: 26
Date: Wed, 20 Sep 2006 20:02:08 -0700
From: "Eric Goforth" <eric_at_goforthtech.com>
Subject: RE: [aprssig] APRS & IRLP
Brief follow up to this post. The AR system is now bi-'ACK'nowled'able...
(Is that even a word???)....
Details Here: http://www.aprsdepot.com/forum/index.php?topic=66.0
Cheers,
Eric, N6GOF
>From: aprssig-bounces_at_lists.tapr.org on behalf of Eric Goforth
>
>The system will ack the message from the requesting station.. However, it
>is basically a fire & forget from the DEPOT side when it sends the
>response. It doesn't request an ack from the original requesting station
>when it sends the response. I looked through the logs and noticed that it
>sent an ack to you three times (and a response to your query three times
>too). Interesting you didn't get the ack though so that your station would
>stop sending. I will have to get some more testing done. Maybe it a THD-7
>thing?? If some others running THD-7's could try and let me know (On the
>site preferrably so that we don't clog up this list, but here if you
>must...).
>
>Thanks.
>Eric
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