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PA2AGA > HDDIG 02.03.00 06:02l 280 Lines 7833 Bytes #-9561 (0) @ EU
BID : HD_2000_61B
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Subj: HamDigitalDigest 2000/61B
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Message-Id: <hd_2000_61B>
From: pa2aga
To: hd_broadcast@pa2aga
Subject: HamDigitalDigest 2000/61B
X-BBS-Msg-Type: B
> power commercial transmitters, and by nature the SS receiver has to have
> a very broad front end. So I'm concerned about fundamental overload problems
> at those critical relay sites. As it is, we have to use cavities in front of
our 56 kb
> systems to deal with the issue. The 56 kb system is narrow enough so that
> works. More complex (and expensive) front end filtering would be needed for
> the wider signals.
good points. I was wondering about the same myself. It seems to me that it
will
also depend on the modulation techniques used. From my admittedly weak
understanding
of spread spectrum, it seems like DSSS would be rendered nonfunctional in the
presence of point RF sources and inter-mod. One would probably need a
different technique for operating in high RF density environments.
> Yes. We can support full duplex, and our sites generally use RF modems
....
> but most users don't perceive enough benefit to do it.
interesting. I guess if all you are running is DX cluster or
APRS you don't need high-speed or full duplex. I guess we need to
find the magic application set that will turn folks interest
to supporting the networks and participating in their growth.
--- eric
--
Eric S. Johansson esj@inguide.com esj@harvee.billerica.ma.us
This message was composed almost entirely using NaturallySpeaking
>.
------------------------------
Date: Tue, 29 Feb 2000 21:26:33 GMT
From: ckg+@osu.edu (Chris Greenhalgh)
Subject: Packet (APRS) reception question
Hello all.
I want to set up a recieve-only APRS computer.
I have the scanner, and I have the computer...my question is, do I
need to have a TNC to deciepher the x.25?
The computer has a sound card...anyway to utilize that?
Thanks much.
=======================================
Christopher K. Greenhalgh, N8WCT
email: ckg+@osu.edu
boat: http://www.sneaker.net.au/%7Egoblin/rbb/jet.html
ax.25: n8wct@w8cqk.#cmh.oh.usa.noam
[not speaking for my employer]
>.
------------------------------
Date: 27 Feb 2000 16:24:05 GMT
From: yu238956@yorku.ca (Samuel Krausz)
Subject: Packet in Toronto
Does anyone know of any packet activity in the Toronto area? I'm not sure
if I should invest in a TNC for VHF if there's nothing going on around
here :)
>.
------------------------------
Date: Mon, 28 Feb 2000 23:18:32 -0500
From: "Tate Jackson" <tatejackson@mindspring.com>
Subject: Packet on a Palm III
Just get yourself a copy of Online or Simpleterm and have at it. Set up
your Palm to run like a VT 100 terminal and its will talk to your kpc 3. It
works for me.
Tate
N3BXZ
Michael <moreth@ix.netcom.com> wrote in message
news:38BB00E2.64E3@ix.netcom.com...
> Dear Friends,
>
> I am interested in any information about using a Palm III on packet with
> a KPC 3 (version 6).
>
> Thanks for your help!
>
> 73,
>
> Michael, N9OGC
> n9ogc@w9zmr.il.usa.noam
>.
------------------------------
Date: Tue, 29 Feb 2000 14:43:40 GMT
From: "Rick Ruhl" <ricker@cssincorp.com>
Subject: SITOR on KAM98... how?
Keep in mind FEC is not a linked mode, and so you're limited to the same
propagation as with RTTY and CW. Are you sure these messages aren't NAVTEX
messages?
"Dave Covert" <davecove@thecoverts.com> wrote in message
news:E7A36736D9529BA5.D7A99E192943CA47.05B8F4E7B18490FF@lp.airnews.net...
>
> I have tried both USB and LSB... I left it in FEC mode for a number of
hours
> last night and woke up this morning to a bunch of random characters with
the
> following section in it: (the 'NETWORK TO S ND AND RECE' part looks like I
> was startign to get something... so why didn't I get more later)
>
> Dave KB5GOG
>
> GR RQRL T R U O T W IRRRRRRRG D G GJ E EP G P G
E
> I
> HO X G Y PE E R Q N D PIPD E BRY
> Q
>
> NETWORK TO S ND AND RECE & -/ 8: 2
>
> ,
> HR TFC ON A C U
>
>
>
> RRRRRRRRRRR VY Y XRRRRRRRRR GQ916 4444444444 5 Z Y
>
> ON RRRRRRRRRR U RRRRRRRRRR F
> Z PT W
>
> Rick Ruhl <ricker@cssincorp.com> wrote in message
> news:FGvu4.77911$ox5.20676118@tw11.nn.bcandid.com...
> > FEC and AMTOR on the Kam can decode SITOR. Your problem is the mode.
> Switch
> > to USB and you'll be able to decode.
> >
> >
> > "Dave Covert" <davecove@thecoverts.com> wrote in message
> >
news:7214BE2F47FCFDEB.0F2A0F97B5D5644A.FD24413255559E45@lp.airnews.net...
> > >
> > > I am trying to decode SITOR (mode B FEC) with my KAM98 with very
little
> > > luck. Can someone help me?
> > >
> > > I am listening to a nice strong signal at 8.42123 LSB* and have the
left
> > and
> > > right tuning LEDs lighting nicely. The Rcv light comes on during every
> > data
> > > burst, but the Link/Con light comes on very rarely after entering
LAMTOR
> > > mode and when it does, I mostly get repeated characters in my terminal
> > > program (hyperterm). (mostly 'R's ) In FEC mode, the Link/Con never
> comes
> > on
> > > and I never see any characters.
>
>
>
>.
------------------------------
Date: Tue, 29 Feb 2000 22:39:34 GMT
From: horseshoestew@my-deja.com
Subject: TNC and Radio
In article <QpXu4.6356$9q2.24062@typhoon.tampabay.rr.com>,
"Sumit Birla" <birla@tampabay.rr.com> wrote:
> Are there tranceivers with built-in Terminal Node Controller?
Thanks...
Yes, check out the Kenwood TH-D7A, it looks really cool; it is dual
band(2m/70cm), and it has a builtin TNC with 1200/9600bps modems:
http://www.kenwood.net/ama_page.cfm
Stewart Teaze
N0MHS
Sent via Deja.com http://www.deja.com/
Before you buy.
>.
------------------------------
Date: Sun, 27 Feb 2000 16:22:44 -0800
From: "Cathryn Mataga" <cathryn@junglevision.com>
Subject: Tower Space
> Hams assisted the Salvation Army and Red Cross, but that was mostly
> buddy-comms, or Canteen logistics. Even then it didn't work out too
> well, because the downtown area is inter-mod city. Many radios were
> useless, except the old 70's style radios which didn't try to receive
> every band known to man like most japanese rigs today.
Yup, on my Ming Dynasty TR7730, 2m sounds so nice and quiet. Whereas
on my HT's that band is intermod central. When did this 'out of band
receive' thing become a must have anti-feature?
>.
------------------------------
Date: Sun, 27 Feb 2000 20:22:34 -0600
From: "Charles Brabham" <n5pvl@texoma.net>
Subject: Tower Space
Cathryn Mataga <cathryn@junglevision.com> wrote in message
news:eViu4.87$Sl6.3757@nuq-read.news.verio.net...
>
> > Hams assisted the Salvation Army and Red Cross, but that was mostly
> > buddy-comms, or Canteen logistics. Even then it didn't work out too
> > well, because the downtown area is inter-mod city. Many radios were
> > useless, except the old 70's style radios which didn't try to receive
> > every band known to man like most japanese rigs today.
>
>
> Yup, on my Ming Dynasty TR7730, 2m sounds so nice and quiet. Whereas
> on my HT's that band is intermod central. When did this 'out of band
> receive' thing become a must have anti-feature?
>
I believe it all started off as a way to facilitate MARS operations.
--
73 DE Charles Brabham, N5PVL
N5PVL @ N5PVL.#NTX.TX.USA.NOAM
http://www.texoma.net/~n5pvl
>.
------------------------------
End of Ham-Digital Digest V2000 #61
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