QRZ! Ham Radio 5/QRZ Ham Radio Callsign Database - Volume 5.iso/digests/digital/940080.txt

Internet Message Format | 1994-11-13 | 17.9 KB

Date: Thu, 24 Mar 94 04:30:22 PST
From: Ham-Digital Mailing List and Newsgroup <[e-mail]>
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Subject: Ham-Digital Digest V94 #80
To: Ham-Digital


Ham-Digital Digest          Thu, 24 Mar 94       Volume 94 : Issue   80

Today's Topics:
                    "G-TOR" info hot off the press
                  9600 bps packet with TM-211 radio
               [REPOST] NTS Traffic on Packet (3 msgs)
                         Getting into packet
                      HP100LX Palmtop & Baycom?
                       KPC-3 and TCPIP (2 msgs)
                          packet radio kits
                   RS htx202/KPC-3 wiring question
                         TCPIP on a UNIX box

Send Replies or notes for publication to: <[e-mail]>
Send subscription requests to: <[e-mail]>
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: Wed, 23 Mar 1994 16:57:57 GMT
From: ihnp4.ucsd.edu!usc!howland.reston.ans.net!vixen.cso.uiuc.edu!uchinews!kimbark![e-mail]
Subject: "G-TOR" info hot off the press
To: [e-mail]

Yesterday there were a series of questions about the new KAM G-TOR
protocol for PacTOR (or is it now G-TOR) digital communication.

The previous thread asked whether or not G-TOR is public. Well
according to the article in RDJ and QST it is based on
MIL-STD-188-141-A and the diagram in the RTTY Digital Journal (Volume
42, Number 3, March 1994, pp20-21) shows the frame contents and timing.
It looks like KAM wishes to make it publically available.  Perhaps
someone can reach Phil Anderson, W0XI (who wrote the RDJ article and
works for Kantronics) for a clarification.

The short paragraph in the April QST says the new KAM standard is based
on the work done for the Voyager spacecraft imaging of Saturn and
Jupiter ("Golay" forward error correction encoding). The RDJ says it is
based on the MIL-STD and that extensive simulation was done inhouse
before actual on-the-air tests. The live tests exceeded their
expectations and yielded a consistent 2X PacTOR throughput. One example
states that a 10K byte file was transmitted in just over 5 minutes KAM
G-TOR compared to 20 minutes in PacTOR.

Features include:
(1) Dramatically increased throughput even in the presence of
    multi-path
(2) Extended "Golay" forward error correcting code.
(3) Full-frame interleaving
(4) On demand Huffman data compression with RLE encoding.
(5) Link-quality based baud rate or 300,200,or 100.
(6) 2.4 second hybrid ARQ cycle
(7) Fuzzy ACK
(8) Reduced overhead within data frames
(9) Standard FSK tone pairs and TU's can be used (to differentiate it
    from the new PacTOR-2 equipment using PSK and DSP modems).

The article in RDJ goes on to explain the actual forward error
correcting code and how the extended verision of the Golay polynomial
is used. The article explains their testing procedure and ends with
this statement:
      "Throughput exceeds other existing all-mode TNC modes by better
      than two-to-one"

It is important ** to note that G-TOR uses AMTOR FEC (not PacTOR FEC)
and commands are AMTOR like (not PacTOR like).

I have NO connection to any hardware or software company. I am posting
this for information and entertainment purposes only :-).

G-TOR is a trademark of Kantronics Co, Inc, 1202 E. 23rd Street,
Lawrence KS, 66046 phone: [phone].

The RTTY Digital Journal can be reached at 1904 Carolton Lane,
Fallbrook, CA 92028-4614 and carries hot articles of interest to all
Digitally enabled hams. Subscriptions are $16US.

                                ___________
  Ken Hopper,                  |    ___    |
  November 9 Vivid Video       |o o \_/ o o|
  HF - CW,PacTOR,RTTY,SSTV     |o o  @  o o|
  [e-mail]  |___________|

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

Date: 23 Mar 1994 17:06:55 GMT
From: ihnp4.ucsd.edu!swrinde!cs.utexas.edu!geraldo.cc.utexas.edu![e-mail]
Subject: 9600 bps packet with TM-211 radio
To: [e-mail]

Dear Netters,
I need info about the injection point and pick-up point for 9600 bps
packet operation on a Kenwood TM-211 radio.

Tnx,

73 de Paulus N5SNN / YG1QN

--
Paulus Suryono Adisoemarta
[e-mail]
[e-mail]
[e-mail]

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

Date: 23 Mar 1994 16:04:03 GMT
From: ihnp4.ucsd.edu!usc!elroy.jpl.nasa.gov!ncar!csn!col.hp.com![e-mail]
Subject: [REPOST] NTS Traffic on Packet
To: [e-mail]

Danny Yarbrough ([e-mail]) wrote:
: [This is a repost of an article I sent out on March 15....since I
: can't find it anywhere other than at my news feeder's site, I suppose
: it got dropped on the floor...somebody correct me if I'm wrong, please]

: I'm curious about how NTS traffic travels on packet.  If someone has a
: reference on the technical aspects of how it works, I'd be very
: interested (I've got the "how-to" kinds of information, like how you
: format and send an NTS message via packet; I'm interested in the
: details of how it happens once I enter "/ex").

Randomly, haphazardly and, more often than not, slowly, if at all.

Mike, K0TER

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

Date: Wed, 23 Mar 1994 17:50:50 GMT
From: ihnp4.ucsd.edu!swrinde!cs.utexas.edu!howland.reston.ans.net!usenet.ins.cwru.edu!news.csuohio.edu![e-mail]
Subject: [REPOST] NTS Traffic on Packet
To: [e-mail]

Mike Stansberry ([e-mail]) wrote:
: Danny Yarbrough ([e-mail]) wrote:
: : [This is a repost of an article I sent out on March 15....since I
: : can't find it anywhere other than at my news feeder's site, I suppose
: : it got dropped on the floor...somebody correct me if I'm wrong, please]
:
: : I'm curious about how NTS traffic travels on packet.  If someone has a
: : reference on the technical aspects of how it works, I'd be very
: : interested (I've got the "how-to" kinds of information, like how you
: : format and send an NTS message via packet; I'm interested in the
: : details of how it happens once I enter "/ex").
:
: Randomly, haphazardly and, more often than not, slowly, if at all.
:
: Mike, K0TER

 R ... just like voice ... except the words aren't slurred together.

 Steve, NO8M.#NEOH.OH.USA.NA

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

Date: Wed, 23 Mar 1994 18:17:00 GMT
From: ihnp4.ucsd.edu!dog.ee.lbl.gov!agate!howland.reston.ans.net!usenet.ins.cwru.edu!news.csuohio.edu![e-mail]
Subject: [REPOST] NTS Traffic on Packet
To: [e-mail]

     Much like a regular packet message, the decision to route a
message is done via a hierarchial address assigned to the zip code
or part thereof.  From there, things get complicated.
     If I have a message to go to Europe, my best route is to
send it to KP4GE in Puerto Rico.  We have an excellent path and
Ramon connects often to get mail into Europe.  IF 20 meters is
open, it goes as soon as I have time to punch the buttons.  (HF
can also be automated however there is a strong push to do away
with automated HF.  Some hope that it will be forced into small
band segments and thereby die by strangulation.  The FCC has been
approached with this form of rulemaking.  The result is that I
trade automation for the better throughput of pactor.  The effect
is that there will be digital signals in a VERY wide area of the
band as pactor requires one frequency for two stations rather than
the ten or fifteen that used to share our HF packet net on one
frequency).  Once KP4GE gets it, he will forward it into Europe.
     Obvious is the fact that we need (1) propagation and (2)
time to punch buttons and attend the HF station.
     Traffic on VHF will move quickly as virtually all of my area
BBS stations are in a constant forwarding loop.  However, the
steps are smaller and it takes longer.  Everything is automated
and no propagational effects are there to hold things up.  Messages
between Cleveland and Columbus should not take more than an hour
or two.
     So what holds things up?  Propagation is not really a factor.
I can get to KP4GE almost at will now that we have pactor.  He can
also get to Europe without too much fuss.  HF routing is now
dependent on the sysop's schedule.  VHF requires that the route
is there.  A power failure or disk crash can hold things up
quite a bit.  So can Sundays (KP4GE is a preacher).  If I am
out of town camping, it has to wait a few more hours until KP4GE
checks.  Visa versa if he is gone.  If there is a catastrophic
failure, the traffic would be routed two BBSs west, to the next
HF forwarder.
     How long does it take?  There are too many variables to
consider.  Don't like the varialbes?  Keep it on voice as if the
same variables aren't there, too.
73,
Steve
     NO8M.#NEOH.OH.USA.NA

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

Date: Thu, 24 Mar 1994 00:16:49 GMT
From: ihnp4.ucsd.edu!munnari.oz.au!newshost.anu.edu.au!sserve!usage!metro!sunb.ocs.mq.edu.au!tony.mpce.mq.edu.au![e-mail]
Subject: Getting into packet
To: [e-mail]

In article <[e-mail]> [e-mail] (Tony Farrow) writes:
>From: [e-mail] (Tony Farrow)
>Subject: Re: Getting into packet
>Date: Tue, 22 Mar 1994 02:16:35 GMT
>Keywords: baycom, modem
>> On Fri, 18 Mar 1994 [e-mail] wrote:
>>
>> > >Does anyone know a cheap way to get into packet radio?  (What is needed
>> > >on a 2-meter tnc for packet?)
>> > >Thanks.
>> > >--
>
>Here are a couple of sources of simple modems.  They are baycom-type
>modems, which use the computer as the TNC.  I have used a couple
>built from an article in Electronics Australia in Jan 1993.  They work
>extemely well with Eskay Packet, Baycom and Graphic Packet
>software.  Kits were also available from the author, Tom Moffatt
>VK7TM for about Aus$79.  He may well still be supplying them.  His
>address is:
>
>High-Tech Tasmania,
>39 Pillinger Drive,
>Fern Tree,
>Tasmania.
>Australia 7064.
>
>I have seen a similar but already-built modem advertised in 73
>magazine, the Model BP-1 Packet Modem (Baypac) ~$50, from.
>
>Tigertronics Inc.,
>400 Daily Lane, PO Box 5210, Grants Pass, OR 97527.
>1-800-822-9722,
>
>Cheers  ... Tony vk2tjf
>****************************
>*  Dr Tony Farrow,         *
>*  Physics Department,     *
>*  Macquarie University,   *
>*  Sydney, Australia 2109. *
>*   [e-mail]    *
>****************************
****************************
*  Dr Tony Farrow,         *
*  Physics Department,     *
*  Macquarie University,   *
*  Sydney, Australia 2109. *
*   [e-mail]    *
****************************

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

Date: Wed, 23 Mar 1994 14:50:49 GMT
From: ihnp4.ucsd.edu!usc!howland.reston.ans.net!usenet.ins.cwru.edu!news.uakron.edu!news.csuohio.edu![e-mail]
Subject: HP100LX Palmtop & Baycom?
To: [e-mail]

Has anyone been able to get Baycom to work on the Hewlett Packard
100LX palmtop?  After externally powering the Baycom, I was able
to transmit readable packets.  However, it does not appear that
the HP is reading the CTS line.  I have verified that data is
going to the CTS out.

There is a pretty good user support group on comp.palmtops and HP
seems interested in any application it can be put to.  I wanted to
check here first.

Also, the paltop runs the MSYS BBS without a complaint.  Running with
300 message slots and about 500 BIDs left me over 150k free (so I could
make lots more slots and BID space).

Interesting that a 80188-based machine can run the serial port at
57k yet we have to watch our BBS phone ports for dropped characters.

73,
Steve
     [e-mail] < works better
     NO8M@NO8M.#NEOH.OH.USA.NA

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

Date: 22 Mar 94 20:05:13 GMT
From: agate!howland.reston.ans.net!wupost!csus.edu!netcom.com![e-mail]
Subject: KPC-3 and TCPIP
To: [e-mail]

Dennis E. Jacobson ([e-mail]) wrote:
: After reading about the recommendation for the KPC-3 the thought crossed
: my mind that it might be what I'm looking for to run a portable TCPIP
: system.. The next question of course becomes does the KPC-3 run KISS
: and has anyone used it for TCPIP.   I'm currently using the GRI NOS on
: my home TCPIP system... Has anyone used the PA0GRI nos with the KPC-3?

One thing to consider is there is no upgrade for 9600 bps on this
TNC, look at the DRSI DPK-2 at least it has a modem disconnect
header so you can use an external high speed modem later if you wish.
Its priced roughly in the same ballpark as the KPC-3.

Dave, KD6RRS
Tracy, CA

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

Date: Wed, 23 Mar 94 18:06:31 GMT
From: mnemosyne.cs.du.edu!nyx10![e-mail]
Subject: KPC-3 and TCPIP
To: [e-mail]

[e-mail] (Hank Oredson) writes:

>In article <2mksi3$[e-mail]>, [e-mail] (Dennis E. Jacobson) writes:
>|> After reading about the recommendation for the KPC-3 the thought crossed
>|> my mind that it might be what I'm looking for to run a portable TCPIP
>|> system.. The next question of course becomes does the KPC-3 run KISS
>|> and has anyone used it for TCPIP.

>Yes, and Yes.

>KPC-3 is excellent value for the money.
If you only want to go 1200 baud it's fine and if you want to keep the same
EPROM in it it's fine.  But if you ever want to modify it for high speed
or DCD or KISS only you'll regret buying as I did.

Just my opinion and expierience,
73, Nate

---
Nathan C. Burnett N8MBK
AX.25 PBBS n8mbk@wb8h.#semi.mi.usa.na
AMPRNET [e-mail] [44.102.48.2]    "Nature cannot be fooled"
Internet [e-mail]                          Richard Feynman

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

Date: 23 Mar 1994 16:42:23 -0500
From: ihnp4.ucsd.edu!library.ucla.edu!europa.eng.gtefsd.com!howland.reston.ans.net!news.intercon.com!news1.digex.net!rtp.vnet.net!mary.iia.org!mary.iia.org![e-mail]
Subject: packet radio kits
To: [e-mail]

  Can anybody recommend a low-cost packet radio kit?  I've ordered the
Ramsey unit but am looking for others.  Actually I'm just looking for a
modulator/demodulator unit that's suitable for RF transmission.  Thanks.

  Tim

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

Date: 23 Mar 1994 16:01:46 GMT
From: ihnp4.ucsd.edu!usc!elroy.jpl.nasa.gov!ncar!csn!col.hp.com![e-mail]
Subject: RS htx202/KPC-3 wiring question
To: [e-mail]

Bill Turner ([e-mail]) wrote:
: In article <[e-mail]>,
: Mark Ellis <[e-mail]> wrote:
: >
: >UPS last nite dropped off my Kantronics KPC-3 (YAY!), so I'm soon
: >to be packet-positive. Got one question:
: >
: >Since my HT (htx202) is my only rig at the moment, are there
: >any special considerations while wiring up the mic plug for packet?
: >
: >The KPC-3 manual does not specifically mention this radio in the
: >wiring section, but since Icom speaker-mics (I think, working from
: >memory) work with the 202, that's a tiny hint to follow the Icom
: >wiring diagram.
: >
: >Any tips/suggestions/etc. will be appreciated.
: >
: >                          .... Mark E. Ellis N2WZB
: >                 <[e-mail]>
: >                               PA&TD Workplace Automation Group
: >                               SMCAR-QAH-P, Bldg 62N
: >                               Picatinny Arsenal, NJ
:
:
: Yep, the Icom info is what to use.  One caution:  look over the
: plug very carefully under a magnifying glass for loose connections.
: They are very small and fragile - mine developed a loose connection
: where the solder lug is rivited to the center conductor and drove
: me nuts trying to find the problem, since it was VERY intermittent.
: It wouldn't work when plugged into the radio, but when removed for
: continuity testing, of course it was ok.  Just make sure it's solid.
:
In the KPC-3 'Getting Started' book and in the 'Reference Manual', the
pictures provided for wiring examples show the microphone going to the
larger of the two 'mini' plugs, and the speaker going to the smaller.
This is reversed from how it really is.  I've never seen anyone
complain about this, however, I'm sure I'm correct about this.
Any comments?

Mike, K0TER

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

Date: 23 Mar 1994 17:56:03 GMT
From: ihnp4.ucsd.edu!dog.ee.lbl.gov!agate!msuinfo!netnews.upenn.edu!gopher.cs.uofs.edu!triangle.cs.uofs.edu![e-mail]
Subject: TCPIP on a UNIX box
To: [e-mail]

I haven't been following the development of NOS for quite some time now, so
maybe someone here can give me a hand.

I currently use a PC as a router between an AX25 LAN and an ETHERNET LAN.
I want to expand the number of channels to include not only the AX.25 LAN, but
also a bunch of dialup SLIP users.  I have at my disposal a MicroVAX II with
about 10 serial ports.  Is there currently available a version of NOS that
will run on the MicroVAX under ULTRIX that will utilize both the serial ports
and the ETHERNET and allow routing between them??

bill  KB3YV

--
Bill Gunshannon          |  de-moc-ra-cy (di mok' ra see) n.  Three wolves
[e-mail]         |  and a sheep voting on what's for dinner.
University of Scranton   |
Scranton, Pennsylvania   |         #include <std.disclaimer.h>

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End of Ham-Digital Digest V94 #80
******************************