QRZ! Ham Radio 4/QRZ Ham Radio Callsign Database - Volume 4.iso/digests/digital/940279.txt

Internet Message Format | 1994-11-13 | 22KB

Date: Sun, 21 Aug 94 04:30:16 PDT
From: Ham-Digital Mailing List and Newsgroup <[e-mail]>
Errors-To: [e-mail]
Reply-To: [e-mail]
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Subject: Ham-Digital Digest V94 #279
To: Ham-Digital


Ham-Digital Digest          Sun, 21 Aug 94       Volume 94 : Issue  279

Today's Topics:
                 900MHz phone spread spectrum systems
                      ?Fastest speed on HF/SSB ?
                      [Q] best software for KAM+
                       AEA DSP2232 Mailing List
                          Filters for TEKK's
                        HELP..TCP/IP (3 msgs)
                             icom ic-r70
                    Kantronics KPC-3 or MFJ 1270C?
                   Off the shelf modems for packet?
                        PKTMON12 HAMCOM JVFAX
               Radio Shack TRS-80 Model 100 for Packet?
                        Winsock packet driver?

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: Thu, 18 Aug 1994 07:26:24 GMT
From: hookup!europa.eng.gtefsd.com!howland.reston.ans.net!pipex!sunic!trane.uninett.no!eunet.no!nuug!EU.net!ub4b!imec.be![e-mail]
Subject: 900MHz phone spread spectrum systems
To: [e-mail]

Nigel Orr (orr@tk17) wrote:
: Can I suggest that the original poster refers to a basic text on
: Spread Spectrum Comms, rather than relying on often-conflicting
: net.hearsay.  As an introduction, I would recommend Spread Spectrum
: Systems, R.C. Dixon, second edition, John Wiley & sons, New York,
: 1984.  There are also many papers on the subject from IEEE journals
: and conference proceedings, some of which are good introductory
: tutorials.
[...]

  Yes, I have seen some howlers too in the followups. Correcting
  is - currently - too time consuming for me, so I thought I would
  give a very nice introduction reference:

  IEEE Transactions on Communications, Vol.Com-30, No.5. May 1982.
  "Theory of Spread-Spectrum Communications - A Tutorial"
  R. L. Pickholz, D. Schilling, L. M. Milstein.

  Note the date ! This is a very good text. People in the business
  will recognize the 'Schilling' from the 'Taub and Schilling'
  classic.

  Hope someone finds this useful,

  Stef

--
Steven Buytaert

WORK [e-mail]
HOME [e-mail]

    'Imagination is more important than knowledge.'
            (A. Einstein)

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

Date: 21 Aug 1994 01:10:37 -0700
From: ihnp4.ucsd.edu!news.cerf.net!nntp-server.caltech.edu!news.claremont.edu!kaiwan.com![e-mail]
Subject: ?Fastest speed on HF/SSB ?
To: [e-mail]

What is the fastest spped of digital transmission on HF/SSB radio ?
using which protocol and modem ?
--
John Lin     *** Save the planet, save the world ! ***

e-mail: [e-mail]

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

Date: 20 Aug 1994 07:34:57 -0700
From: ihnp4.ucsd.edu!news.cerf.net!nntp-server.caltech.edu!news.claremont.edu!kaiwan.com![e-mail]
Subject: [Q] best software for KAM+
To: [e-mail]

In article <[e-mail]>, [e-mail] (Richard Berndt) wrote:
> In article <[e-mail]>,
> [e-mail] (Kenneth C Hopper) writes:
> > New KAM+ owner seeks good software suggestions.
> > OP only on HF.
> >
> > TNX,
> >                                 ___________
> >   Ken Hopper,                  |    ___    |
> >   [e-mail]        |___________|
> >
>
>
> [A[A[A[A[A[A[A[A[A[A[A[B[B[B[B[B[C[C[C[C[C[C[C[C
  Ken:
  I am running KAGOLD 9.02 and it is great.  I have tried many
  others including Hostmaster, but KAGOLD is the best that I have
  found.  Their support is excellent.  You can contact them at
  [e-mail]

  Bob
--
 ---------------------------------------------------------------------------
 | E-Mail: [e-mail]  |  Packet: K0OK@K6CPT.#LACCA.#SOCA.CA.USA.NA |
 ---------------------------------------------------------------------------

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

Date: 20 Aug 1994 00:01:02 +0200
From: news.cerf.net!nntp-server.caltech.edu!sdd.hp.com!math.ohio-state.edu!howland.reston.ans.net!EU.net!Germany.EU.net!Aachen.Germany.EU.net!rmi.de!Aachen.Germany.EU.net![e-mail]
Subject: AEA DSP2232 Mailing List
To: [e-mail]

====================================================================
      This is the Mailserver at EUnet EUregio POP Aachen
====================================================================

If you are interested in exchanging information on the

AEA DSP 2232 - Digital Signal Processing Multi-Mode Data Controller

you are invited to join our Mailing list (started on May 12, 1994).
Please subscribe by sending a Mail to

[e-mail]   [or [e-mail]]
with the subject: "subscribe" .

If you would like to share your experiences of knowledge on the
unit, write you contributions to

[e-mail]   [or [e-mail]].


====================================================================
        Automatic weekly mailing
====================================================================

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

Date: Sat, 20 Aug 1994 02:31:10 GMT
From: ihnp4.ucsd.edu!agate!howland.reston.ans.net!usc!nic-nac.CSU.net!charnel.ecst.csuchico.edu!csusac!csus.edu!netcom.com![e-mail]
Subject: Filters for TEKK's
To: [e-mail]

John Bednar (jkbe@lena) wrote:
: I am looking for suppliers that sell 21.4 Mhz IF crystal filters
: that I can stuff into a TEKK data radio. I'd like to experiment
: with higher data rates. Has anyone been through this before?

: John, WB3ESS
: [e-mail]

--
*******
Bob Merritt  KA4BYP  ----->  [e-mail]  <-----

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

Date: 19 Aug 1994 22:15:40 -0700
From: ihnp4.ucsd.edu!dog.ee.lbl.gov!agate!darkstar.UCSC.EDU!news.hal.COM!olivea!isc-br!tau-ceti!on-ramp.ior.com![e-mail]
Subject: HELP..TCP/IP
To: [e-mail]

I could sure use some help in getting started on TCP/IP!
I have various versions of NET, NOS and BM and none of them seem to
work with each other.. Also, I have tried putting my PK232mbx into
KISS mode and cannot seem to get it to work.. Turning KISS ON or with
latest firmware I have KISS $01 results in TNC hanging up..not able to do
a restart.. Is there something wrong with my TNC?

Thanks for any help offered.

Bob, KG7WC

--
  +---------------------+------------------------+-------------------------+
  |  Robert J. Raymond  |  Spokane, Washington   | [e-mail]    |
  |  Patricia Raymond   | Amateur Callsign KG7WC | [e-mail] |
  +---------------------+------------------------+-------------------------+

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

Date: Sat, 20 Aug 1994 16:31:24 GMT
From: ihnp4.ucsd.edu!dog.ee.lbl.gov!agate!howland.reston.ans.net!swrinde!cs.utexas.edu!chpc.utexas.edu!news.utdallas.edu!feenix.metronet.com![e-mail]
Subject: HELP..TCP/IP
To: [e-mail]

In <3343hs$[e-mail]>, [e-mail] (Robert J. Raymond) writes:
>I could sure use some help in getting started on TCP/IP!
   Have you checked out the NOSintro Book by Ian Wade? It should get you
started. The ARRL had some copies on order back in Jun. Don't know what
there status is. 350+ pages of text and illustraitions for $25 is a good
bargin.
   Also... you should see what version of NOS others around you are using.
I think it's always best to start off with what others are using so you
can get local help from them.

> Also, I have tried putting my PK232mbx into
>KISS mode and cannot seem to get it to work.. Turning KISS ON or with
>latest firmware I have KISS $01 results in TNC hanging up..not able to do
>a restart.. Is there something wrong with my TNC?
   Some TNC's... go into kiss mode with the command KISS ON and nothing
else. Once your in KISS mode, your TNC is going to appear to be 'hung up'.
You won't be able to enter commands from the keyboard. You might just
want to do what your doing and then start NOS. GL.


73's  de  Jack  -  kf5mg
Internet        -  [e-mail]            -  44.28.0.14
                -  [e-mail]              -  work (looking  for)
AX25net         -  kf5mg@kf5mg.#dfw.tx.usa.noam    -  home [phone]

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

Date: Sat, 20 Aug 1994 20:12:19 GMT
From: iat.holonet.net!vectorbd![e-mail]
Subject: HELP..TCP/IP
To: [e-mail]

The NOSView stuff is available as a set of files on many LLBBS's.
The one listed below has it many many other IP-helpers,

--
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Jim Lill                          / Vector Board BBS  \
[e-mail]                 \ 716-544-1863/2645 /
wa2zkd@wb2psi.#wny.usa.na           GEnie: ZKD

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

Date: 19 Aug 94 14:09:54 +
From: mvb.saic.com!news.alpha.net!pacifier!rainrgnews0!psgrain!charnel.ecst.csuchico.edu!olivea!spool.mu.edu!howland.reston.ans.net!EU.net!sun4nl!idn!z111!n310!f128![e-mail]
Subject: icom ic-r70
To: [e-mail]

hello all;

I'm still using a icom ic-r70 but would like very much to have a computer
interface as to simplify tuning etc. There should have been some made in the
not to distant past and if anyone should have or know anything about such a
thing I would like it very much to hear from you.....
--
| Internet: [e-mail]
|
| Standard disclaimer: The views of this user are strictly his own.

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

Date: Fri, 19 Aug 94 23:17:49 -0500
From: news.delphi.com![e-mail]
Subject: Kantronics KPC-3 or MFJ 1270C?
To: [e-mail]

Gary Ross <[e-mail]> writes:

>I am looking into getting into packet and was looking for input as to a
>preference between the Kantronics KPC-3 and the MFJ 1270C (or another TNC I

Hi Gary...just noticed your message and as a very pleased owner of a kpc3
thought that I should respond.  I have had the kpc3 for almost a year and
have found it to be an inexpensive and well built unit.  I am currently
running it in kiss mode with jnos 1.10d, but have used it with all types
of software.  Just a quick response...for what it's worth!
cul...73, Dave

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

Date: Sat, 20 Aug 1994 15:15:15 GMT
From: ihnp4.ucsd.edu!dog.ee.lbl.gov!agate!library.ucla.edu!europa.eng.gtefsd.com!emory!wa4mei!ke4zv![e-mail]
Subject: Off the shelf modems for packet?
To: [e-mail]

In article <[e-mail]> [e-mail] (Dany Vereertbrugghen) writes:
>I was just wondering : wouldn't it be possible to use a normal
>modem for packet radio.  I don't know much about this, so ...?
>Can someone point out the difficulties to me or give comments on
>the idea?

This is a Frequently Asked Question. The answer is that if you have
a modem that can do Bell 202 (not 212) *half duplex* without need to
negotiate a connection, and if you can do the HDLC and AX.25 in software
on your computer, then yes you can use your phone modem. In fact, it
was availability of surplus leased line Bell 202 modems that made
packet originally take off. However, such modems haven't been made
in at least 10 years, more like 15, so it's unlikely your modem
can do the job.

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

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

Date: Sat, 20 Aug 94 15:55:06 EDT
From: juniper.almaden.ibm.com![e-mail]
Subject: PKTMON12 HAMCOM JVFAX
To: [e-mail]

In <940818085256@ken_durham.sc.ti.com> Ken Durham writes:
>G4WNC, the author of "Decode" a column in Shortwave Magazine, mentioned a
You are right about your mail bouncing..... You can get Hamcom30 and
Jvfax60 via FTP to nic.funet.fi in the directory pub/ham/misc. You might
take a look in pub/ham/packet directory also. I understand that Jvfax70
will be available soon.
=========================================================================
Bob Hamilton                | Remember..The light that you see at the end
([e-mail])   |  of the tunnel just might be a train !
=========================================================================

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

Date: Sat, 20 Aug 1994 15:22:18 GMT
From: ihnp4.ucsd.edu!dog.ee.lbl.gov!agate!library.ucla.edu!europa.eng.gtefsd.com!emory!wa4mei!ke4zv![e-mail]
Subject: Radio Shack TRS-80 Model 100 for Packet?
To: [e-mail]

In article <[e-mail]> [e-mail] (Gordon Phillips) writes:
>
>I use packet on my 386 computer with an ASA PK-88 tnc through my Realistic
>HTX-202 handheld 2 meter radio.  I would like to try operating portable
>packet.  I have been offered an old TRS-80 Model 100 computer with manual
>I am told is in good working order.
>
>My questions are:
>
>1) Is this rather old computer suitable for portable packet?

Yes indeed. The only problem is the 40 column lines. Most packet is
formatted for a 80 column screen, so lines wrap and make formatted
messages look funny.

>2) the model 100 has an rs232 port -- do I need any other hardware or can
>   I simply connect my pk88 directly to that port?

All you need is a RS232 cable.

>3) Will the communications software in the computer work satisfactorily
>   with the pk88 tnc?

Yes.

>4) the model 100 runs at 300 bps through its internal phone modem, what
>   speed can I expect to operate the tnc via the rs232 port?

The TRS100 will support faster speeds on it's serial port. I don't
recall exactly how fast it will go, I sold mine a while back, but
I'm sure it'll do 9600 and maybe 19.2 kb.

The Mod 100 is still a good portable packet terminal because of it's
excellent battery life and relatively small size.

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

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

Date: Sun, 21 Aug 1994 07:32:40 GMT
From: netcomsv!netcom.com![e-mail]
Subject: Winsock packet driver?
To: [e-mail]

Bob Donnell, KD7NM ([e-mail]) writes:

    > There are folks who are working on writing a packet driver to go
    > between Windows TCP/IP applications (Winsock or FTP's PACKET driver
    > interface) and a KISS-capable TNC.

Eureka!  I've been anxiously waiting for someone to take this one on.  Can
you tell us more, Bob?


Todd, KB6JXT

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

Date: Sat, 20 Aug 1994 14:36:52 GMT
From: ihnp4.ucsd.edu!agate!howland.reston.ans.net!europa.eng.gtefsd.com!emory!wa4mei!ke4zv![e-mail]
To: [e-mail]

References <32b56i$[e-mail]>, <32d90d$[e-mail], <3306v8$[e-mail]>
Reply-To : [e-mail] (Gary Coffman)
Subject : Re: Looking for DXCluster software

In article <3306v8$[e-mail]> [e-mail] (Andrew B. White) writes:
>While I agree with you that PC use of AX.25 is not the best for distributing
>spots, it is, currently, the only game in town.

Note that broadcast servers us AX.25 too, just UI frames instead of
connected mode frames. The FCC has us locked into AX.25 wrappers for
unattended third party use.

>AK1A has something like
>400 nodes installed around the world, and they all talk to each other (altho
>the email facility comes close to being useless if the mail has to go more
>than one hop).  Besides, if the network is configured as it should be,
>with local users on one frequency and the inter-node link on another, I
>am not sure that the amount of bandwidth required is an issue.

While splitting the users off the backbone is essential to making the
systems work well at all, it *does* increase the amount of bandwidth
the systems tie up. The real problem is that connected mode bulletin
distribution uses nearly 26 times the channel capacity of a broadcast
server. That means in practice, at our current low channel speeds, that
channels have to be *dedicated* to Packet Cluster activity rather than
being timeshared with other packet uses. That's bad spectrum utilization.

Of course faster channel speeds can help, and I note with approval
that Packet Clusters seem to be among the first to embrace faster
channel speeds (out of necessity), first jumping to 2400 baud and
now going to 9600 baud. But that's only a less than 2 and less than
9 increase in channel capacity respectively at best (actually much
worse than that on a simplex frequency due to turnaround and overhead
delays). But a simple change to a broadcast protocol would *immediately*
give a nearly 26 fold increase in available channel capacity. Since it's
*only software* (heh), the change could be relatively quick and painless
too.

Note, broadcast use would free up channels only by allowing more
than 26 stations per cluster. The channel would still have to be
dedicated to the broadcast server. But the server could also serve
more than just DX spots with the excess channel capacity. It could
also distribute other types of bulletins and files in it's idle
time.

I don't think most connected mode servers are a good use of packet
resources any longer. Broadcast servers are so much more efficient
that Cluster *and* BBSs should change over as rapidly as practical.
There remain some cases where connected mode works best, like serving
low density WANs that need digis to get coverage. For higher density
areas, however, the broadcast server is very much superior for most
uses. (Personal Email may remain an exception.) Perhaps we need to
think about making broadcast the bulletin and file distribution default,
and connected mode the exception, in future server designs.

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

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

Date: Sat, 20 Aug 1994 15:04:35 GMT
From: ihnp4.ucsd.edu!dog.ee.lbl.gov!agate!library.ucla.edu!europa.eng.gtefsd.com!emory!wa4mei!ke4zv![e-mail]
To: [e-mail]

References <32d90d$[e-mail], <3306v8$[e-mail]>, <[e-mail]>
Reply-To : [e-mail] (Gary Coffman)
Subject : Re: Looking for DXCluster software

In article <[e-mail]> [e-mail] writes:
>
>I also agree that AX.25 is not the best protocol for sending DX spots but
>PacketCluster is an AX.25 application that requires the minimum equipment
>on the user end.  A radio, TNC, and dumb terminal is the user investment. It
>would seem that to implement a more efficient protocol would certainly require
>a computer on the user end to sort things out. Some of the OF's barely mastered
>getting a dumb terminal to talk to a TNC, it would be real interesting watching
>them trying to become computer literate. Hi..

I'll repeat, broadcast servers use an AX.25 wrapper too. It's just a UI
frame instead of a connected mode frame and acknowledgement.

As for the OFs with dumb terminals, I suspect they are the exception.
Dxers generally want the newest and biggest toys. Even the old guys
use logging programs, propagation prediction programs, etc. It may
have taken them longer to become computer users, but many of them
have overcome their fear of the unknown and pushed ahead rather than
watch their spot on the Honor Role slip.

>But if someone came out with a system that offered enough advantages over the
>current Cluster software, I think it might catch on. There are many problems
>with PC that could be overcome by a more robust protocol which would be very
>attractive to the sysops. My own feeling is that PacketCluster needs competition
>or many of the problems with it are not going to be solved.

I think that's right.

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

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

End of Ham-Digital Digest V94 #279
******************************