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PA2AGA > HDDIG 20.06.00 04:08l 214 Lines 7743 Bytes #-9436 (0) @ EU
BID : HD_2000_170C
Read: GUEST
Subj: HamDigitalDigest 2000/170C
Path: DB0AAB<DB0ZKA<DB0GPP<DB0LX<DB0RBS<DB0PSC<DB0ACH<DB0HAG<DB0BRI<DB0SM<
PI8DAZ<PI8APD<PI8WNO<PI8HGL
Sent: 000619/2007Z @:PI8HGL.#ZH1.NLD.EU #:53017 [Den Haag] FBB $:HD_2000_170C
From: PA2AGA@PI8HGL.#ZH1.NLD.EU
To : HDDIG@EU
Date: Mon, 19 Jun 00 17:51:06 MET
Message-Id: <hd_2000_170C>
From: pa2aga@pe1mvx.ampr.org
To: hd_broadcast@pa2aga.ampr.org
X-BBS-Msg-Type: B
> > your Digital Trio from HRO and am waiting for it
> >
> > Dunc
> > "Rick Ruhl" <ricker@cssincorp.com> wrote in message
> > news:skqg9amie7f79@corp.supernews.com...
> > Dunc,
> >
> > We've tested the USB interface in house and it works fine with Pacterm '98
> > and the KAM. To both of them, it just looks like another serial port. The
> > Belkin hub, as the Entegra, works fine if the USB interface on the
> computer
> > works fine.
> >
> > I'd recommend setting both the KAM 98 and Pacterm '98 at 9600, since
> that's
> > Pacterm' default. If you need any addtional help in setting it up, please
> > call us at 256-381-6100. My tech guy Bill (WD4HEN) is there M-F 8-5.
> >
> > --
> > Rick Ruhl
> > President, Creative Services Software
> > http://www.cssincorp.com
> >
> >
> > "Duncan Fowler" <Dunc.Fowler@worldnet.att.net> wrote in message
> > news:3%a35.9077$C44.508177@bgtnsc05-news.ops.worldnet.att.net...
> > > Are there any commercial cables available to connect these two? I was
> > sent
> > > a MFJ 5065YH but that does not have the correct TNC connection.
> > >
> > > I will be connecting the KAM to my computer using a USB>Serial port
> > adapter
> > > on a Belkin hub. Anyone else done that? Any problems? KAM says it
> > should
> > > be OK
> > >
> > > I have PacTerm 98 ordered. Will that work OK with this configuration as
> > > well?
> > >
> > > Thanks
> > >
> > > Dunc, KL7RH
> > >
> > >
> >
> >
> >
>
>
>
------------------------------
Date: Sun, 18 Jun 2000 08:53:27 -0700
From: "Walter Dunckel" <walter@radiohound.com>
Subject: Kenwood TH-D7A
The TH-D7 is very functional. I have used it mostly in APRS mode and some
packet. This radio takes a little getting used to since it has so many
functions, but I am extremely happy with it. Some of the functions that
Kenwood does not advertise is that this radio accepts control codes via its
serial port: http://www.radiohound.com/control.htm and here are a few
programs that make use of this feature:
http://www.radiohound.com/d7zpinfo.htm . Another is that in addition to
sending APRS messages, this radio can send very short E-mail messages over
APRS. This radio has recently been upgraded to a TH-D7A(G). I would recomend
purchasing this upgraded model. Here are the changes:
http://www.radiohound.com/2000upgrade.htm .
I own two. One is hooked up to the internet for anyone to try. You will need
Microsoft Netmeeting to view it, and Internet explorer to control it:
http://www.radiohound.com/radio.htm .
Enjoy,
Walter
http://www.radiohound.com
"James R. DeLoach" <jdeloachX@swbell.net> wrote in message
news:mcepksodns6a1hdcp61srbcspj5k7ih6m8@4ax.com...
> Has anyone had experience using the Kenwood TH-D7A? Does it work
> well for packet and APRS? I was just looking at the ad on the back of
> this months QST. It looks like a neat radio, but I was wondering if
> was very functional and useful.
>
>
> Regards,
>
> James
------------------------------
Date: Sun, 18 Jun 2000 14:05:16 GMT
From: "Hank Oredson" <horedson@att.net>
Subject: N0ZO no longer supports Keyboard inputs!
"Paul Keinanen" <keinanen@sci.fi> wrote in message
news:6msokscqmvuggkr58j9aos3gc569hkggba@4ax.com...
> Does the mid-West often get hit by a full scale nuclear war or hit by
> a huge meteorite miraculously saving all the forwarding stations,
> their operators and power supplies ? What information is so important
> that it must be transmitted coast to coast and when it finally
> arrives, is it of any value anymore ?
You miss the point. If the equipment is not used on a regular basis, it
will not be maintained, and then will not be available, or will not work,
or nobody will know how to use it, in an emergency. The link with
WB1DSW was simply an example. Part-15 equipement can only be
used to link very small areas (e.g. neighborhoods). What is needed
during a large disaster (e.g. the Loma Prieta earthquake in California)
is the ability to communicate in and out of the area. After the quake,
very heavy use was made of HF packet links to move health and
welfare messages. The telephone system collapsed and was useless.
In some areas, the phone system did not become fully functional
until several WEEKS after the earthquake. The same was true of
many roads as well.
--
... Hank
http://horedson.home.att.net
------------------------------
Date: Sun, 18 Jun 2000 13:06:01 -0500
From: Steve Sampson <ssampson@usa-site.net>
Subject: N0ZO no longer supports Keyboard inputs!
Hank Oredson wrote:
[snip]
> Part-15 equipment can only be
> used to link very small areas (e.g. neighborhoods). What is needed
> during a large disaster (e.g. the Loma Prieta earthquake in California)
> is the ability to communicate in and out of the area.
Trunk solutions are the way to go:
The distance covered is actually quite good. The rules are basically
1 dB of gain reduction (after 6 dB) for every 3 dB of antenna gain.
That means that 1 Watt (30 dBm) can go into a no gain Omni, but power
must be reduced 1 dB (to .8 Watts) for a 9 dB gain Omni (6 Watts ERP,
and heck, that's better than my Alinco handheld).
I have a system in operation that covers about 5 miles and is roof-top
height. Given any altitude the range would easily double with the
27 dBm into 20 dB gain antennas (that's almost 50 Watts ERP if my
math isn't way off).
Anyway, "very small area" isn't a very good term.
I understand TAPR is interested in producing a vocoder kit designed
by Charles Brain, G4GUO. If they did, that would give you a source
for 9600 bps FEC digital audio. If each of these was connected to
portable telephones and LMR/HAM repeater systems, you could connect
about 90 of these through a Mux to a 1.8 Mbps Part-15 radio. Combined
with a pure data channel (two stacked beams) would provide both data
and voice capability. If you could get by with 2400 bps FEC voice,
then you could have about 350 voice channels Mux'ed onto the link
(and 2400 sounds really good using the AMBE chip).
What we want to do is give every Forest Firefighter, or any Emergency
Tech a personal radio and set up split-band or simplex repeaters for
them, and portable phones (headsets) for the deployed command center.
Then shoot the Mux data out of the affected area. What I envision is
one of those booms the TV crews have, or a hilltop, skyscraper, etc.
For example, the OKC Bombing required less than 1 mile to get out of
the affected area. A Forest Fire, Earthquake, or Flood would be a
worse-case, with possible radio (trunk) relay sites to the nearest
infrastructure.
But all you need is a T-1 that is available at most Telco or
large business, to plug your Part-15 10Base-T into, and a Mux at
the regional command center.
My basic argument, is that the long-haul links are mainly displaced
by highly redundant circuits. I would say that High-Seas long-haul
is still something that HF might be useful for, but every big boat
has a SatComm for both voice and email these days.
My other secondary argument, is that Hams no longer have the *only*
radio solution today. Family's have FRS (I know of two families
that have one of these radios for every person), you see them at the
Malls, etc. FEMA has blown everyone away by upgrading communities
to new Trunk systems. The bad old days are gone, where a 100 Watt
2 meter or 20 meter rig, and a bunch of donuts could be used to
save lives. There is an use for 30 baud circuits, but emergency
isn't one of them.
Steve
------------------------------
Date: Sun, 18 Jun 2000 13:37:46 -0500
To be continued in digest: hd_2000_170D
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