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1994-11-13
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Date: Sun, 7 Aug 94 04:30:13 PDT
From: Ham-Digital Mailing List and Newsgroup <ham-digital@ucsd.edu>
Errors-To: Ham-Digital-Errors@UCSD.Edu
Reply-To: Ham-Digital@UCSD.Edu
Precedence: Bulk
Subject: Ham-Digital Digest V94 #263
To: Ham-Digital
Ham-Digital Digest Sun, 7 Aug 94 Volume 94 : Issue 263
Today's Topics:
900 MGHz FM
<none>
Best Modulation Scheme for 9600 Baud
Recommendations on low-power TNC
Tandy 1000EX (2 msgs)
TNC-20
Windows and Packet Radio
Send Replies or notes for publication to: <Ham-Digital@UCSD.Edu>
Send subscription requests to: <Ham-Digital-REQUEST@UCSD.Edu>
Problems you can't solve otherwise to brian@ucsd.edu.
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: Fri, 5 Aug 1994 19:33:58 GMT
From: ihnp4.ucsd.edu!dog.ee.lbl.gov!overload.lbl.gov!dancer.ca.sandia.gov!cronkite.nersc.gov!fastrac.llnl.gov!lll-winken.llnl.gov!uwm.edu!mixcom.com!kevin.jessup@network.ucsd.edu
Subject: 900 MGHz FM
To: ham-digital@ucsd.edu
In <31sh5k$2hg@aurora.engr.LaTech.edu> ems@engr.latech.edu (Esam M. Salem) writes:
>Can anyone help get the circuits for FM transmitter/receiver in the range of 902-928.
>I need the circuits for a project I'm working on.
>ems@engr.latech.edu
>or
>203 homer
>Ruston, La 71270
I'm not sure exactly what you want.
Do you want an off-the-shelf ready-to-go RF section?
Or the discrete components and/or ICs to do the job?
Narrow band or wide band? Analog or digital? What is the data rate?
Have you decided on a specific modulation technique? You mentioned
FM. Narrow band FM voice?
500 milliWatts or 500 MegaWatts? ;-)
Amateur, commercial or hacker? Guess which of the 3 has less options? :-)))
Legal or clandestine? ;-)
--
/`-_ kevin.jessup@mixcom.com | The US Constitution defines the
{ }/ Marquette Electronics, Inc | "rights" the people give to the
\ / Milwaukee, Wisconsin, USA | government, not the reverse!
|__*| N9SQB, ARRL, Amateur Radio |
------------------------------
Date: Fri, 5 Aug 1994 11:14:11
From: ihnp4.ucsd.edu!munnari.oz.au!quagga.ru.ac.za!ucthpx!uctvax.uct.ac.za!thebox.ee.ctech.ac.za!jakes@network.ucsd.edu
Subject: <none>
To: ham-digital@ucsd.edu
------------------------------
Date: Fri, 5 Aug 1994 11:28:43
From: ihnp4.ucsd.edu!munnari.oz.au!quagga.ru.ac.za!ucthpx!uctvax.uct.ac.za!thebox.ee.ctech.ac.za!jakes@network.ucsd.edu
Subject: Best Modulation Scheme for 9600 Baud
To: ham-digital@ucsd.edu
Hi all!
I just want to know which modulation scheme , eg. FSK ,GMSK..etc., to use in
order to run 9600 baud or higher data rates in a 12,5kHz channel spacing.
Thanx
Jakes
Please reply to: jakes@maxwell.ctech.ac.za
and I will forward all answers to this newsgroup.
J. du Toit
Electrical Engineering
Cape Technikon
Cape Town
South Africa
------------------------------
Date: Sat, 6 Aug 94 10:53:47 +1000
From: munnari.oz.au!foxhound.dsto.gov.au!fang.dsto.gov.au!yoyo.aarnet.edu.au!yarrina.connect.com.au!news.uwa.edu.au!harbinger.cc.monash.edu.au!news.cs.su.oz.au!metro!@@ihnp4.ucsd.edu
Subject: Recommendations on low-power TNC
To: ham-digital@ucsd.edu
I'm looking for a TNC for portable field applications, so low power
consumption is a primary consideration. Small physical size would
also be nice. It also needs to support KISS (do any TNCs *not*
do KISS these days?), but frills like mailboxes and the like don't
really worry me one way or the other.
The KPC-3 looks like it'll fit the bill, and the Tiny 2 might too,
but I don't have much info on that one. Are there any others I
should be considering, or anything (bad) I should know about either
of those two?
Thanks in advance,
Mark VK2XGK
--
Mark Cheeseman cheese@active.asstdc.com.au Fido: 3:712/412.0 [+61 2 314 6117]
PO Box 1287 North Sydney NSW 2015 Ph +61 2 966 1722 Fax +61 2 955 8871
------------------------------
Date: Wed, 3 Aug 1994 22:39:00 GMT
From: ihnp4.ucsd.edu!nntp.ucsb.edu!library.ucla.edu!agate!iat.holonet.net!bthouse!mike.grose@network.ucsd.edu
Subject: Tandy 1000EX
To: ham-digital@ucsd.edu
I have a friend trying to get his packet station going. He has a Tandy
1000EX with the memory expansion board giving it 640 ram. It loads up
DOS fine, but when he loads up a packet program, it gives an error
message:Pack File Corrupt. Does anyone have any suggestions on
correcting this problem. He has an AEA PK232-MBX tnc also. Any help
would be appreciated. 73's de KE4CLE.
* * InterNet * Outward Bound BBS * Hendersonville, NC (704) 696-2503
------------------------------
Date: 7 Aug 1994 02:24:49 GMT
From: news.uiowa.edu!panda@uunet.uu.net
Subject: Tandy 1000EX
To: ham-digital@ucsd.edu
In note <RU1R8mL.brunelli_pc@delphi.com>, brunelli_pc@delphi.com writes:
>Mike Grose <mike.grose@bthouse.com> writes:
>
>>I have a friend trying to get his packet station going. He has a Tandy
>>1000EX with the memory expansion board giving it 640 ram. It loads up
>>DOS fine, but when he loads up a packet program, it gives an error
>>message:Pack File Corrupt. Does anyone have any suggestions on
>>correcting this problem. He has an AEA PK232-MBX tnc also. Any help
>>would be appreciated. 73's de KE4CLE.
>
Apparently Micro$oft's messed up again 8-)...until recently EXEPACK had a
bug so it would report a "packed file corrupt" whenever you try to run it in
the first 64K. DOS 5.0 has loadfix.com to fix this, or just load some little
TSR so you have less than umm.. *listens to gears in head spin up* 576K free.
I guess this is fairly unlikely.. you usually can't get 576K free without
loading things high (which you probably can't do on the 1000EX..) but it's
possible.. if that's it, this will help.
If it's not that, then like that other person said, it actually *is*
corrupt and try getting it again, or get it somewhere else...
------------------------------
Date: 7 Aug 94 12:26:13 GMT
From: news-mail-gateway@ucsd.edu
Subject: TNC-20
To: ham-digital@ucsd.edu
Hello everybody,
A TELEREADER TNC-20 Packet controler was given to me but without any
documentation. Beside that, I believe that the internal software is not the
original one. Here is what the startup message says :
PacComm TINY-2 Packet Controller
AX.25 Level 2 Version 2.0
Features:
KISS
PERSONAL MESSAGE SYSTEM V 2.3
CLOCK CHIP SUPPORT
CWID
Release S1.1.6B2 17/05/89 - 32K RAM
Copyright U.K. by SISKIN ELECTRONICS
Checksum $B6
cmd:
I am just starting with packet and I am looking for a documentation on this
box as well as the list of the software commands for this firmware. Also,
being a Mac user, what are the best software packages to take full
advantages of this controler.
Thank you in advance for all the answers.
73's - F1BAQ
Francois Locqueville : flocq@dialup.francenet.fr
------------------------------
Date: 6 Aug 1994 23:38:34 GMT
From: ihnp4.ucsd.edu!agate!howland.reston.ans.net!gatech!newsxfer.itd.umich.edu!zip.eecs.umich.edu!umn.edu!lynx.unm.edu!mack.einet.com!usenet@network.ucsd.edu
Subject: Windows and Packet Radio
To: ham-digital@ucsd.edu
In article <31jge6$bb5@usenet.INS.CWRU.Edu>, ei938@cleveland.Freenet.Edu (Andrew J Lynch) says:
>
>
>Packet Folks
>
>Two questions:
>
>1. Does a packet modem driver for Win 3 exist for the Baycom modem? It occured
>to me this weekend that if Baycom can be used for TCPIP, then it could be used
>for TCPIP under Windows, right?
>
I am running a full Winsock suite of Internet tools at the moment, using
a SLIP connection to a commercial provider. I also run a Baypac modem
on the same machine (A Gateway Handbook 486 - at 3 pounds!) The currently
available Baycom software ain't that smart. I have problems running any Baycom
stuff in a Dos box so I usually bail out and run from the (UGH) Dos prompt.
The difference between the two environments is VERY ANOYING!
I have run vanilla NOS with the AX25 driver under Dos with no problems, and
it may be possible to use some of the Packet wedges to make them work under
Windows, but I want a real WIndoze device driver that is Winsock compliant!
I have been reading up on the Winsock interface and am working on a Baycom
style driver. But, I am trying to do that without having access to the
Windows Device Driver development tools. (Who says Hams are cheap?)
A few books seem to say it is possible, but more say plunk down the bucks
and have fun.
There was an interesting talk at the last TAPR meeting on running packet
through Winsock, and thats what started me off on this adventure. If you, or
anyone else have tried working on this - I's like to know how things are
going. I'd like the same quality user interface we see in commercial Windows
applications for my packet work. The current crop of interfaces probably
worked fine when we had teletype machines. (I Know, many hams still DO
have those mechanical marvels - but it is time to upgrade!)
------------------------------
End of Ham-Digital Digest V94 #263
******************************