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PA2AGA > HDDIG 08.06.00 03:28l 165 Lines 5792 Bytes #-9451 (0) @ EU
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Date: Wed, 07 Jun 00 22:18:22 MET
Message-Id: <hd_2000_158A>
From: pa2aga@pe1mvx.ampr.org
To: hd_broadcast@pa2aga.ampr.org
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Ham-Digital Digest Wed, 7 Jun 2000 Volume 2000 : Issue 158
Today's Topics:
$20.00 Aisin GPS board
DSP settings for PSK31 (2 msgs)
list of packet sites in Seattle
PKS31 SIGNAL REPORTS (2 msgs)
problems connecting to a packet bbs (3 msgs)
Question on Kenwood THD7A? Difference D7A and D7A(G)?
Regular Landline Modem Conversion into a TNC Device
WHICH GPS FOR APRS?
Send Replies or notes for publication to: <Ham-Digital@UCSD.Edu>
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Archives of past issues of the Ham-Digital Digest are available
(by FTP only) from ftp.UCSD.Edu in directory "mailarchives/ham-digital".
We trust that readers are intelligent enough to realize that all text
herein consists of personal comments and does not represent the official
policies or positions of any party. Your mileage may vary. So there.
Loop-Detect: Ham-Digital:2000/158
----------------------------------------------------------------------
Date: Tue, 6 Jun 2000 05:13:29 -0700
From: "Clinton" <cpeebles@_nospam_kootenay.net>
Subject: $20.00 Aisin GPS board
Thanks for the replies. It took 45 minutes, but it finally figured out
where it was..
---
Remove _nospam_ to reply
Clinton Peebles VE7KNL DN19ie
Salmo, B.C. Canada
E-Mail: cpeebles@kootenay.net
"Clinton" <cpeebles@_nospam_kootenay.net> wrote in message
news:8hf04n$fns$1@news.junction.net...
> I just connected the GST-2 chip to my Aisin board and am using VisualGPS
to
> view the incoming data. It says I'm at 35 degrees North and 135 East.
I'm
> located at 49 degrees North and around 117 degrees West. Has anyone else
> had this problem or have any suggestions? Is there away to reset the
board?
> It's seeing at least 4 satellites, at least my Garmin in the same location
> does. The clock seems OK..
------------------------------
Date: Tue, 06 Jun 2000 11:50:47 GMT
From: Den <dennis.spiess@reckitt.com>
Subject: DSP settings for PSK31
In article <8hgn2g$evv$1@bob.news.rcn.net>,
"Bob Lewis" <aa4pb@erols.com> wrote:
> > I'd like to see digital filters added to the software....
> > 73
> > Den Spiess W2DEN -.-
>
> Doesn't the PSK31 DSP software already have digital filters built in
> to it? Most of the problem I see is within the receiver and that
> requires filters inside the AGC loop to correct. I'm not sure that an
> additional audio filter ahead of the sound card would help with QRM.
> Perhaps some of the software developers could explain what type of
> filtering is contained in the software and whether additional
> filtering (outside of the receiver) would provide much benefit.
>
>
My audio DSP does help quite a bit, especially in crowded conditions.
Even though the rig AGC does cut back the rigs gain with a loud
station, using the DSP lets me turn up the rig volume (to hear the weak
station) and then I can filter out the loud station, still copying the
weaker one.
As I can do this in an audio DSP I think it could be done within the
sound card thus eliminating a piece of equipment. It is not THE
solution but one I think would help many of us who cannot do anything
on the rig side. I am looking to see if I can turn off my AGC in the
rig.
73
Den Spiess W2DEN -.-
Sent via Deja.com http://www.deja.com/
Before you buy.
------------------------------
Date: Tue, 06 Jun 2000 20:37:18 GMT
From: marsgal42@hotmail.com
Subject: DSP settings for PSK31
In article <8hgn2g$evv$1@bob.news.rcn.net>,
"Bob Lewis" <aa4pb@erols.com> wrote:
> Doesn't the PSK31 DSP software already have digital filters built in
> to it? Most of the problem I see is within the receiver and that
> requires filters inside the AGC loop to correct. I'm not sure that an
> additional audio filter ahead of the sound card would help with QRM.
> Perhaps some of the software developers could explain what type of
> filtering is contained in the software and whether additional
> filtering (outside of the receiver) would provide much benefit.
PSK31 implementations use matched filtering, the standard way of
making a filter that provides the maximum response to the signal
you want. If you get decent input to the software it will do
its job (optimally in theory, and very well in practice). If
the radio messes up the incoming audio there is little the
software can do about it. GIGO!
Some PSK31 implementations come with source code. Have a look.
Laura Halliday VA3LDH/7 "Que les nuages soient notre
Grid: CN89mg pied a terre..." - Hospital/Shafte
Sent via Deja.com http://www.deja.com/
Before you buy.
------------------------------
Date: Tue, 06 Jun 2000 14:42:13 GMT
From: "Hank Oredson" <horedson@att.net>
Subject: list of packet sites in Seattle
That list is several years out of date.
Note the entry for WLINN:W0RLI-1, which went off air nearly three
years ago when I moved from West Linn to Sherwood. It is now
PARETB:W0RLI-5 and is on 144.91 here on Parrett Mt.
(Although I'm in Oregon, half my coverage area is in S. Washington state).
--
... Hank - w0rli
http://horedson.home.att.net
"Gary P. Fiber" <gfiber@news.cmc.net> wrote in message
news:4kvojs4bir0rs4lkddi98m896lusip7p3d@4ax.com...
> On Mon, 5 Jun 2000 07:04:39 -0700, "jim madden"
> <jmadden@pop.nwnexus.com> wrote:
>
> >Can anyone point me to an up-to-date resource that lists the 2m adn 70cm
> >packet frequencies currently operating in the Seattle area?
To be continued in digest: hd_2000_158B
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