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PA2AGA > HDDIG 22.10.99 02:18l 216 Lines 6893 Bytes #-9710 (0) @ EU
BID : HD_99_264C
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Subj: HamDigitalDigest 99/264C
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From: pa2aga
To: hd_broadcast@pa2aga
Subject: HamDigitalDigest 99/264C
X-BBS-Msg-Type: B
>device which can upconvert it to a desired frequency. The most common
>input(s) are 28MHz and 144MHz and 440MHz.
>I was thinking of running this at a much higher band then 28MHz.
Yes but you proposed modulation of the ethernet manchester-encoded 10Mbps
data on a carrier like that. Maybe even using FSK.
How do you picture doing that?
And why do you want to use 10Base2?
Cards supporting that interface have all but died out, and it is much more
complicated than using 10BaseT or AUI, because RX and TX share the same
wire.
Rob
--
+----------------------------------+--------------------------------------+
| Rob Janssen pe1chl@amsat.org | WWWhome: http://www.pe1chl.demon.nl/ |
| AMPRnet: rob@pe1chl.ampr.org | AX.25 BBS: PE1CHL@PI8WNO.#UTR.NLD.EU |
+----------------------------------+--------------------------------------+
>.
------------------------------
Date: 17 Oct 1999 01:58:03 -0500
From: dtmiller@midiowa.net (Dean T. Miller)
Subject: Prospective Project
Matt Donohoe <killer00@ihug.com.au> wrote:
>1. Use the output from a 10mbit/sec Ethernet card from the Coax
>port(10Base2) not the 10BaseT port, baseband filter it to about 24.1MHz
>which should cover the full output. Use a FSK/BPSK/QPSK modulating
>element then a oscillator to convert it to a 'transvertable' frequency
>at which it can be plugged into a transverter (28MHz or 144MHz) then
>Amplified with a conventional Power Amplifier.
>
>2. The recieve side should have a filter which filters to about 24.1MHz
>again then a BPSK/QPSK/FSK reciever/modulating element to recover the
>carrier then bring the signal back to a 'baseband' level for input back
>into the card.
I guess I'm puzzled. What band are you going to use. Your message
almost makes it sound like you're thinking of using 10m or 2m. Even
using those freqs as IFs would be almost guaranteed trouble if you are
modulating with a 24.1 MHz signal, wouldn't it?
-- Dean -- from (almost) Duh Moines (CDP, KB0ZDF)
>.
------------------------------
Date: Sun, 17 Oct 1999 06:50:33 -0500
From: "Charles Brabham" <n5pvl@texoma.net>
Subject: The BBS network and tcp/ip.
Hamish Moffatt <hamish@rising.com.au> wrote in message
news:7ubpb2$171d$2@arachne.labyrinth.net.au...
> Charles Brabham <n5pvl@texoma.net> wrote:
> > I intend to wait until this problem with LINUX boxes mysteriously
causing
> > nearby Win95/98 machines to become crash-prone has been tracked down and
> > resolved.
>
> May I call you a Windows LID then, Charles?
Sure, you can call me anything you want. - But that won't change the facts.
>
> Really, I thought you had a more open mind than this, Charles.
I do. I gave LINUX a fair trial, and it turned out to be garbage. I'll give
it another try later on, but not until the problem I mentioned has been
resolved.
--
73 DE Charles Brabham, N5PVL
N5PVL @ N5PVL.#NTX.TX.USA.NOAM
http://www.texoma.net/~n5pvl
>.
------------------------------
Date: Sun, 17 Oct 1999 07:00:18 -0500
From: "Charles Brabham" <n5pvl@texoma.net>
Subject: The BBS network and tcp/ip.
Hamish Moffatt <hamish@rising.com.au> wrote in message
news:7ubpcm$171d$3@arachne.labyrinth.net.au...
> Hank Oredson <horedson@att.net> wrote:
> > This seems a reasonable thing to do. Perhaps the Linux experts can
explain
> > why this problem occurs. For now it seems the best thing to do is to
avoid
> > Linux until the problem is cured.
>
> Is this a troll?
You guys really get the prize for being thick-headed. Has anyone bothered to
read my post that Hank is responding to here?
Don't forget to get out your dictionary and grammar text... One thing that
surprises me on this ng is the number of illiterate people who post here. On
average, less than one out of three appear to be able to read and understand
the posts they respond to.
I try to stay away from the "big words" and to structure my sentences as
best I can. (I tend to use too many commas and make my sentences too long)
but I'm still constantly amazed at how difficult it sometimes is to
communicate here.
Try reading my post again.
--
73 DE Charles Brabham, N5PVL
N5PVL @ N5PVL.#NTX.TX.USA.NOAM
http://www.texoma.net/~n5pvl
>.
------------------------------
Date: Sun, 17 Oct 1999 09:43:38 -0500
From: "Steve Sampson" <ssampson@usa-site.net>
Subject: The BBS network and tcp/ip.
Charles Brabham wrote
>I gave LINUX a fair trial, and it turned out to be garbage. I'll give
>it another try later on, but not until the problem I mentioned has been
>resolved.
You want us to believe you are an authority on packet radio, with all
the right opinions.... Then you want us to believe that you are an
expert on Operating Systems, with all the right opinions.
I've been employed as a Unix administrator for years, and Linux
represents what most modern Unix systems use as state of the art.
I only run the stable versions, not the development versions. There
is no truth to the fact that Linux is unstable. Even IBM ships Linux
now with their Netfinity servers (high-end NT server base machine).
The only bad thing about Linux, is that it is harder than IBM AIX to
administer. But with AIX I have to wait 3 years to afford the next
update.
My opinion, is that RedHat Linux (I run 5.2) is more stable than
Sun Solaris 2.7 on a dual Pentium motherboard I run. My other
opinion is that Charles doesn't understand Packet radio, and he
doesn't understand Operating Systems. Just my opinion...
That leaves us with a question: why the hell do you even subscribe
to this newsgroup? DOS and GUI-DOS pro-arguments belong
in the fringe alt.* groups...
If you are going to do TCP/IP, and everyone will; then you need to
use a good platform to develop on. Linux is good, DOS would be
the third choice after some of the single-board microcontrollers
that are available now to TCP/IP anything.
Steve Sampson, K5OKC
>.
------------------------------
Date: 17 Oct 1999 06:12:38 GMT
From: Hamish Moffatt <hamish@rising.com.au>
Subject: The BBS network and tcp/ip.
Hank Oredson <horedson@att.net> wrote:
> This seems a reasonable thing to do. Perhaps the Linux experts can explain
> why this problem occurs. For now it seems the best thing to do is to avoid
> Linux until the problem is cured.
Is this a troll?
Hamish
--
Hamish Moffatt Mobile: +61 412 011 176 hamish@rising.com.au
Rising Software Australia Pty. Ltd. http://www.risingsoftware.com/
Phone: +61 3 9894 4788 Fax: +61 3 9894 3362 USA: 1 888 667 7839
>.
To be continued in digest: hd_99_264D
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