QRZ! Ham Radio 4/QRZ Ham Radio Callsign Database - Volume 4.iso/digests/digital/940338.txt

Internet Message Format | 1994-11-13 | 15KB

Date: Wed, 12 Oct 94 04:30:26 PDT
From: Ham-Digital Mailing List and Newsgroup <[e-mail]>
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Subject: Ham-Digital Digest V94 #338
To: Ham-Digital


Ham-Digital Digest          Wed, 12 Oct 94       Volume 94 : Issue  338

Today's Topics:
                         Lanlink Availability
                 More on 49MHz for data transmission
                 Source Code for Z80 TNC w/ maildrop?
                             THENET X1J2
          The Second UKIP Network Group Meeting - FINAL INFO
                      Unix vs DOS vs OS/2 vs NT
                          Yaesu FT2400 Mods

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Problems you can't solve otherwise to [e-mail].

Archives of past issues of the Ham-Digital Digest are available
(by FTP only) from 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.
----------------------------------------------------------------------

Date: 12 Oct 1994 02:36:33 GMT
From: [e-mail] (Thom Forbes)
Subject: Lanlink Availability

In article <[e-mail]>, [e-mail] (David Seeler) says:
>
>I was wondering what version of lanlink is currently available and
>where I might find it.

------------------------------------------------------------------

ftp.funet.fi  /pub/ham/packet/terminal  ll232exe.zip

This version is from June '94

Hope this helps...

- 73 -
Thom / N2CBV

------------------------------

Date: 11 Oct 94 15:34:30 GMT
From: [e-mail]
Subject: More on 49MHz for data transmission

     I just read my last 2 posts in the digest.  Could anyone understand
     what I said?  It wasn't clear (to me when I read it again) that my
     primary suggestion is to use a 100mW transmitter with a center loaded
     dipole for transmit (total antenna length 1 meter).  At the receive
     end use a 4 or 5 element 6 meter beam (modified for 49MHz) to get both
     gain and directivity.  This kind of arrangement ought to be good for 4
     to 5 miles.

     Ray Mack
     WD5IFS
     [e-mail]

------------------------------

Date: Tue, 11 Oct 1994 07:38:25 GMT
From: [e-mail] (William A. Wetzel)
Subject: Source Code for Z80 TNC w/ maildrop?

Anyone know where to find source code for a TNC2 with maildrop capability?

                                           73 de William, N6RKY.
N6RKY @ NETCOM.COM
N6RKY @ WF6O.#SOCA.CA.USA.NA

------------------------------

Date: Tue, 11 Oct 1994 22:45:26 GMT
From: [e-mail] (Daniel Meredith)
Subject: THENET X1J2

-> Newsgroups: rec.radio.amateur.digital.misc
-> Path: stat!news.primenet.com!news.asu.edu!asuvax!cs.utexas.edu!howlan
-> From: jkbe@lena (John Bednar)
-> Subject: Re: THENET X1J2
-> Message-ID: <[e-mail]>
-> Sender: [e-mail] (Netnews Administration)
-> Nntp-Posting-Host: lena.cnet.att.com
-> Organization: AT&T
-> X-Newsreader: TIN [version 1.2 PL2]
-> References: <[e-mail]> <[e-mail].c
-> Date: Tue, 11 Oct 1994 14:41:12 GMT
-> Lines: 26
->
-> Larry Rappaport ([e-mail]) wrote:
-> : [e-mail] (Jim Ridley) writes:
->
-> : Having the same problem.  The only other solution I've heard of is
-> : 10Mhz TNC's.  Over the last weekend, I spoke to Bert, VE2BLY, who s
-> : that the R2 firmware is just buggy, and that the only solution is t
-> : back to R1 until they fix it.  Apparently, all you lose is the 3 ex
-> : channels for D/A conversion, but if you're not using them, it's no
->
->
-> I don't know if switching back to X1J R1 will solve your buffer probl
-> because I saw the "node busy" / low buffer problem with X1JR1.

This problem has been existant since X1G, so I highly doubt X1J R1 will
have any effect at all...

->
-> This problem seems to surface at sites that hear many partial packets
-> that consistant with everyone's thoughts? Maybe we can list the assoc
-> symptoms and help the developers locate the weakness. I'm sure they
-> would appreciate our help. I agree that DCD mods, closed squelch, and
-> faster clock rates may be band-aids but discussing these fixes may
-> help someone locate the problem.

This is exactly as we have determined...We have severe HTS on a couple
of 7,000 Ft Mtn top sites that serve 2 valleys, the valleys do not
hear each other, so the node is consistently hearing partial and
stepped on packets because of this...

->
-> Prior to installing X1J (I was using TN2.11), I had a 4.9 Mhz TNC wit
-> no DCD mod and I ran open squelch. That all changed with X1J.
->
->
-> John, WB3ESS
->


Dan

-----                      \---------------/                          -----
                     Arizona Network Intertie Group
                 "Serving Az's Digital Needs Since 1993"

Daniel J. Meredith - N7MRP                    Voice: [phone]
P.O. Box 44563                                Fax  : [phone]
Phoenix,  Arizona                             BBS  : [phone]
          85064-4563

List Owner: [e-mail]
Arizona Amateur Radio Packet Coordinator

------------------------------

Date: 11 Oct 1994 23:03:24 +0100
From: [e-mail] (M. Knell)
Subject: The Second UKIP Network Group Meeting - FINAL INFO

Hi folks,

       THE SECOND NATIONAL UKIP NETWORK GROUP MEETING - FINAL DETAILS
       --------------------------------------------------------------

Sorry for the delay with getting this sorted out, but I have been rather
busy recently with a lot of stuff, such as signing on, applying for
jobs, sitting around mooching, and all the other activities generally
associated with those who've just stopped being students.

Anyway, here are the final details:

The meeting will be held THIS SATURDAY (15th October), as agreed in
June, and will once again be at the Department Of Computer Science of
the University of Nottingham.
The meeting is due to start at 10:30AM, with arrival and refreshments
(yes, I am actually sorting them out this time!) from 10:00. The
estimated finish time will be around 1600, with the opportunity once
again to adjourn to one of the SU bars for more informal discussions..

There will be a nominal meeting fee of ukp1.50 per person, to cover
meeting expenses, plastic cups, coffee, etc. This will include tea &
coffee, though, so it's not all that bad. Sorry I've had to take this
step this time, but the price of flourescent cardboard and magic markers
is rising all the time..

AGENDA ITEMS! The agenda still looks rather bare. If you've got anything
you want to discuss (which judging by some of the mailing list traffic
most people have ;-) ) then _please_ get them to me. I don't want to
have to make up the agenda again *grin*

ASSISTANCE - Any assistance anyone can offer with talk-in, note-taking,
and such would be appreciated. Thanks very much to those who've already
offered.

DIRECTIONS
----------
By train: Take the train to Nottingham, and take the No. 12 bus from
opposite the station (direction Beeston?) to the university. Ask the
driver to drop you at the South Entrance. The Tower Block is the big
tall tower block (ahem) that's clearly visible.

By road:
FROM THE M1: Leave the M1 at Junction 25 (A52) and follow signs to
Nottingham. Continue along the A52 until you reach the large roundabout
(with signs right to the East Midlands Conference Centre). Turn right
here, then left at the next roundabout into the West Entrance of the
University. Take the first right then immediately left onto Cut-Through
Lane. Continue on this road until you see signs for _either_ the
Department of Computer Science or Electronic Engineering, then follow
around the roads and park around Science City. The meeting is in the
large tower block - the room will be signed.

FROM THE A1: This is actually simpler than the M1 (IMHO). Leave the A1
at Grantham and take the A52 in the direction of Nottingham. The A52
eventually (I think) becomes the Nottingham ring road - just stay on it
until you reach the exit (after passing the multiplex cinema & retail
park on your left) for Dunkirk, which should be also signed for the
University. Come off the ringroad here, go straight across the
roundabout at the bottom and drive up the side of the University. Take
the first left turn into the University, before the Tower Block.
(this is "Science Road"). This brings you straight into the right bit
of campus. Find somewhere to park around Science City, there's plenty of
space. Then make your way to the tower block.

If in doubt (and Nottingham can be a confusing place) call talk-in,
either on 144.550 or 433.550 (S22/SU22).

Any queries should be directed to me, either electronically to
[e-mail], or give me a ring on [phone]. If
you're not yet a member of the UKIP mailing list on the Internet, send mail
to [e-mail] to join.

That looks like being about it - look forward to seeing you there!

Cheers
Mike


--
+--- Mike Knell -- Squashed Lagomorphia on the Information Superhighway(tm) --+
| Vending machines should NEVER NEVER| SMTP thing: [e-mail] |
| EVER eat money. - RFC1288 (Finger) | AX25 thing: G7GPA@GB7COV.#29.GBR.EU    |
+----------- These are my opinions, not anybody else's, so bog off. ----------+

------------------------------

Date: Tue, 11 Oct 94 23:54:50 GMT
From: [e-mail] (Gary Lau)
Subject: Unix vs DOS vs OS/2 vs NT

In article <[e-mail]>
[e-mail] (Todd Jonz) writes:

> Microcomputing history buffs who want a real good laugh should try to dig up
> some of the Microsoft/IBM marketing propaganda that accompanied the first
> release of OS/2 and compare it to the current NT hype.  The similarities are
> positively frightening!

And convincing a new generation of users that (brand X) is the
end-all-be-all solution (and literally betting their corporate future
on it, with no parachute when they jump).


Gary Lau
Internet: [e-mail]
Amateur : N6MMM @ N0ARY.#NOCAL.CA.USA.NOAM

------------------------------

Date: 11 Oct 1994 19:04:01 -0400
From: [e-mail] (Btenison)
Subject: Yaesu FT2400 Mods

Does anyone know of any mods to the Yaesu FT2400 to allow it to do 96K
packet?  If so, could you post it or send me some e-mail?
Tnx,
Bruce
[e-mail]

------------------------------

Date: Mon, 10 Oct 1994 20:37:57 GMT
From: [e-mail] (David Tiller)

References<368pp8$[e-mail]> <[e-mail]>, <36qcks$[e-mail]>
Subject: Re: EME digital link

Todd Little ([e-mail]) wrote:

: In article <[e-mail]>, [e-mail] (David Tiller) writes:
: |>
: |>Don't forget Faraday rotation, libration fading, etc...Why not wait for the
: |>phase 3d sats - geostationary beats the tar out of the moon, IMHO, and it's
: |>a lot closer (shorter delay time).
: |>--

: To the best of my knowledge, phase 3d is *not* geostationary.  It's hard to
: get world wide funding for a bird in geosynchronous orbit since it would
: only cover a portion of one hemisphere.


Check out the article in either QST or QEX - I'm not sure if it's phase 3d,
but AMSAT is planning a geostationary bird over Brazil that'll cover the US,
central america, and a big chunk of europe, as I recall.
--
David Tiller                | Network Administrator | Voice: [phone]   |
[e-mail] |  n2kau/4  | Randolph-Macon College| Fax:   [phone]   |
  Don't let your SKS get    | P.O. Box 5005         | ICBM:  37d 42' 43.75" N |
"Tainted with Defilement!"  | Ashland, Va 23005     |        77d 31' 32.19" W |

------------------------------

Date: Mon, 10 Oct 1994 23:57:13 GMT
From: [e-mail] (Gary Coffman)

References<[e-mail]> <[e-mail]>, <[e-mail]>
Reply-To: [e-mail] (Gary Coffman)
Subject: Re: 56k+ Packet System

In article <[e-mail]> [e-mail] (Daniel T Senie) writes:
>Thanks for all the clarifications. It all makes more sense now.
>
>As for the acceptance of the GRAPES system, I've a few suggestions and
>questions. The requirement for an outboard transverter from a different
>source is definitely a problem. If your group had a transverter setup
>as part of the kit (or available as part of it) you'd certainly get more
>people to go for it. It's a lot simpler to buy a kit of boards and perhaps
>components from a single source, rather than multiple ones.

Having the modem work with transverters was a design decision to allow
as much flexibility in band choice as possible. I'm not on the GRAPES
board anymore, but when I was, we discussed the issue of offering a
transverter with the kits. The consensus was that GRAPES wasn't a
commercial concern, and couldn't afford to get into the business of
stocking third party equipment. That would be sort of like asking
TAPR to stock Kenwood radios to go with their TNC kits.

>What does the modem communicate with? Does it take in an HDLC data stream?
>I do software for routers that talk IP and the like, and have thought about
>writing a driver to do the IP over AX.25 stuff used on packet radio IP. (If
>someone'd point me toward documentation of the details of the packet formats,
>and if I can get the router to slow down enough, I might be able to write
>such a beast). I can connect off of my boxes at V.35, RS-232 or X.21 line
>levels. I suspect I'd have to adapt those for your modem, but perhaps not.
>Could be interesting to have a router on my house ethernet talking IP to
>the radio world...

The modem behaves as an ordinary synchronous modem. It accepts TTL data
as input and supplies Tx clock, Rx clock, and received data. It was
designed to be compatible with the TNC2 modem disconnect header, but
will work with other digital hardware such as the Ottawa PI card or the
Gracillis card (both designed with driving the GRAPES modem in mind),
or any other system that expects to interface with a synchronous modem
and is capable of doing the required data rates. The protocols used are
up to the digital hardware and it's drivers.

Gary
--
Gary Coffman KE4ZV          |    You make it,     | gatech!wa4mei!ke4zv!gary
Destructive Testing Systems |    we break it.     | emory!kd4nc!ke4zv!gary
534 Shannon Way             |    Guaranteed!      | [e-mail]
Lawrenceville, GA 30244     |                     |

------------------------------

End of Ham-Digital Digest V94 #338
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