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- Date: Tue, 16 Aug 94 04:30:21 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 #273
- To: Ham-Digital
-
-
- Ham-Digital Digest Tue, 16 Aug 94 Volume 94 : Issue 273
-
- Today's Topics:
- 900 MHz spread spectrum systems
- [Q] best software for KAM+ (2 msgs)
- [Q] ftp site for xpkam ?
- Help! I need info for a telemetry project(packet driver??)
- Jnos Config with E/Net card
- Packet Radio with apple LC ?
- PACTOR/AMTOR subbands...where?
- PacTOR subbands
- PK-88 to Kenwood TM-231A interface
- Quadra 610 DOS/Packet Gold <-> PK232 Help: It's not working.
- RE >Packet with Mac LC
- TAPR FTP SITE???
- TNC construction article
- Widrow-Hoff LMS algorithm for DSP???
-
- 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: Mon, 15 Aug 1994 17:19:50 GMT
- From: netcomsv!netcom.com!grady@decwrl.dec.com
- Subject: 900 MHz spread spectrum systems
- To: ham-digital@ucsd.edu
-
- Steve_Allen (stevalln@dorsai.org) wrote:
-
- : My understanding is that these phones use direct sequence spread spectrum.
- : I was browsing thru a book on this the other day (idly, at the bookstore
- : while looking for other stuff), and seem to recall reading that dsss is
- : the easiest mode to sync to. I think you sort of slide your sequence back
- : and forth over the signal, and when they're synced, the signal gets clear
- : in an easily detectable way. (Can't remember the details of that, tho).
-
- The same principle is used in the GPS constellation and some kinds of
- amateur packet modems to enhance the transmission reliability of small
- amounts of data in the presence of a large amount of random noise.
-
- The base transmits a short pseudorandom sequence of bits. The receiver
- slides the same sequence along the uncorrelated background noise until
- the receiver notices that in one particular position their are far
- more matching "peaks" and "valleys" than in any other position. You
- are now in sync and can then copy the bursts that follow relatively
- easily.
-
- Reputedly phones like the Tropez do not actually use spread-spectrum for
- the voice portion of the transmission, though, so we're still going to
- have to wait for Voice-PGP or something before we have true voice/data
- radio security.
-
- --
- Grady Ward | For information and free samples on | "Look!"
- grady@netcom.com | royalty-free Moby natural language | -- Madame Sosostris
- +1 707 826 7715 | lexicons (largest in the world), | A91F2740531E6801
- (voice/24hr FAX) | run: finger grady@netcom.com | 5B117D084B916B27
-
- ------------------------------
-
- Date: Mon, 15 Aug 1994 14:44:44 GMT
- From: equalizer!timbuk.cray.com!cdsmail!uchinews!kimbark!khopper@network.ucsd.edu
- Subject: [Q] best software for KAM+
- To: ham-digital@ucsd.edu
-
- New KAM+ owner seeks good software suggestions.
- OP only on HF.
-
- TNX,
- ___________
- Ken Hopper, | ___ |
- November 9 Vivid Video |o o \_/ o o|
- HF - CW,PacTOR,RTTY,SSTV |o o @ o o|
- k-hopper@uchicago.edu |___________|
-
- ------------------------------
-
- Date: Mon, 15 Aug 1994 18:03:41 GMT
- From: ihnp4.ucsd.edu!news.cerf.net!mvb.saic.com!eskimo!ranger@network.ucsd.edu
- Subject: [Q] best software for KAM+
- To: ham-digital@ucsd.edu
-
- In article <1994Aug15.144444.23552@midway.uchicago.edu>,
- khopper@kimbark.uchicago.edu (Kenneth C Hopper) writes:
- > New KAM+ owner seeks good software suggestions.
- > OP only on HF.
- >
- > TNX,
- > ___________
- > Ken Hopper, | ___ |
- > k-hopper@uchicago.edu |___________|
- >
-
-
- [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,
- .
-
- ------------------------------
-
- Date: Mon, 15 Aug 1994 15:03:03 GMT
- From: equalizer!timbuk.cray.com!cdsmail!uchinews!kimbark!khopper@network.ucsd.edu
- Subject: [Q] ftp site for xpkam ?
- To: ham-digital@ucsd.edu
-
- Anyone have an ftp site for the latest version of xpkam ?
-
- TNX
- Ken - N9VV k-hopper@uchicago.edu
-
- ------------------------------
-
- Date: Mon, 15 Aug 1994 05:07:00 GMT
- From: ihnp4.ucsd.edu!dog.ee.lbl.gov!agate!usenet.ins.cwru.edu!magnus.acs.ohio-state.edu!csn!news.usafa.af.mil!cs30-23.usafa.af.mil!LOUXWE96%CS25@network.ucsd.edu
- Subject: Help! I need info for a telemetry project(packet driver??)
- To: ham-digital@ucsd.edu
-
- Hello,
- I am a cadet at the US Air Force Academy and this semester I am taking an
- independent research project where we will be building a hybrid rocket and
- testing it.
-
- I am in charge of the telemetry on this rocket. We must send and receive
- various info(i.e. temp, pressure, g's, etc.) and put this info in some
- readable digital form. Being as this is only a college project we do not
- have very much money and need to find a cheap alternative to expensive
- telemetry equipment.
-
- I have been reading hobby radio magazines and think that your technology
- would be just right for my purpose. I need you to tell me if there is
- anything in the radio community that I could use for this. I think that it
- may be possible to send the info from an onboard transmitter and then use a
- reciver and packet driver to send this information into a PC and in a
- digital form, but I do not know enough about this technlogy to know if this
- is something that will work. I need info from you.
-
- Please, any information on what to do or where to look for what to do would
- assure my undying support!
-
- Thank you!
- Bill
- -------------------------------------------------------------------------
- * Cadet William E. Loux | "I have never let my *
- * P.O. Box 2835 | schooling interfere *
- * United States Air Force Academy | with my education." *
- * Email=> louxwe96%cs25@cadetmail.usafa.af.mil | -Mark Twain *
- --------"All know the way; Few actually walk it." -Bohhidharma-----------
-
- ------------------------------
-
- Date: Sun, 14 Aug 1994 01:09:28 GMT
- From: ihnp4.ucsd.edu!sdd.hp.com!usc!elroy.jpl.nasa.gov!netline-fddi.jpl.nasa.gov!nntp-server.caltech.edu!news.cerf.net!mvb.saic.com!eskimo!rdonnell@network.ucsd.edu
- Subject: Jnos Config with E/Net card
- To: ham-digital@ucsd.edu
-
- Alastair "J." Downs (ee17@csu.napier.ac.uk) wrote:
- : Has anyone managed to configure Jnos v1.10xx to work with an ethernet card.
- : The cards I have in mind are NE2000, WD8003 etc.
- : Sample config file would be very much appreciated.
- : I have tried using the clarkson packet drivers and using the Attach packet
- : command without any success.
-
- Well, that is what I did - I'm using an NE-2000 and the clarkson packet
- drivers, along with the 'attach packet ...' command. Here is a
- transliteration (typing from one monitor to the other keyboard) of the batch
- file, which will be followed by the autoexec.nos fragment that gets it
- going.
- ---------------------------------------------------------------------------
- ne2000 0x60 0xf 0x320 # for sw interupt 60, IRQ 15, address 320
- nos
- ---------------------------------------------------------------------------
- attach packet 0x60 ether 10 1500 # for sw interupt 60, 10 buffers, 1500 bytes
- ifconfig ether ipaddress <my ip address>
- ifconfig ether netmask 0xffffffff # not running ethernet as its own subnet
- ifconfig ether broadcast <my broadcast address>
- arp publish <ethernet machine #1's ip address> ax25 <ax25 mycall> <ax25 iface>
- arp publish <ethernet machine #2's ip address> ax25 <ax25 mycall> <ax25 iface>
- arp publish <ethernet machine #3's ip address> ax25 <ax25 mycall> <ax25 iface>
- route addprivate <ethernet machine #1's ip address> ether
- route addprivate <ethernet machine #2's ip address> ether
- route addprivate <ethernet machine #3's ip address> ether
- ---------------------------------------------------------------------------
- The main reason for the broadcast address is to allow using rip routing on
- the network. The 'arp publish' causes the router to respond as if it were
- the computer you were really trying to reach, so other stations will send
- a packet with the ethernetted computer's IP address to the router. Hope
- that helps.
-
- Also - does the version of JNOS you are using have the packet driver
- compiled in? Look at 'info' to see if it says 'FTP Software's PACKET driver
- interface. If not, you can't use ethernet cards with that version.
-
- : 73s de
-
- : %% Alastair J. Downs \__\_\_\ a.downs@csu.napier.ac.uk %%
- : %% E.E & Comp.Eng.Dept. \ |\ \ \ phone +44 31 455 4389 %%
- : %% Napier University, Edinburgh | _ fax: +44 31 455 7938 %%
- : %% Scotland, UK |_| |_ GM6NEI@GB7EDN.#77.GBR.EU %%
-
- 73,
-
- Bob
-
- --
- ---------------------------------------------------------------------------
- Bob Donnell, kd7nm bob@ethanac.kd7nm.ampr.org rdonnell@eskimo.com
- Western Washington Amateur IP Address Coordinator (206) 775-3651
- ---------------------------------------------------------------------------
-
- ------------------------------
-
- Date: 15 Aug 94 19:09:53 GMT
- From: news-mail-gateway@ucsd.edu
- Subject: Packet Radio with apple LC ?
- To: ham-digital@ucsd.edu
-
- > Hello there,
- > does anyone know how to use a mac (lc) for packet radio, i.e. with the baycom
- or another
- > modem? Are programms available on anon. FTP sites ?
- > 73's Adrie.
- >
- Yes, look for SoftKiss 1.8. This driver makes a Baycom-style modem look like a
- KISS TNC. Then you need NET/Mac and IM/Mac for NOS style use, or you can buy
- the commercial program "Savant" for AX.25 use.
-
- Look for the freeware stuff at ftp.ucsd.edu and the sumex site. Savant is by
- the same author as the shareware program Virtuoso.
-
- 73, David N4HHE
- dkelly@nebula.tbe.com
-
- ------------------------------
-
- Date: 13 Aug 1994 14:06:26 -0700
- From: ihnp4.ucsd.edu!sdd.hp.com!usc!howland.reston.ans.net!agate!darkstar.UCSC.EDU!news.hal.COM!olivea!isc-br!tau-ceti!on-ramp.ior.com!not-for-mail@network.ucsd.edu
- Subject: PACTOR/AMTOR subbands...where?
- To: ham-digital@ucsd.edu
-
- I believe that Hawaii and Alaska are in different ITU Zones and that someof
- the phone allocations maybe be different. I know that hams in Alaska can
- use phone in the lower portion of 40 meters, but I am not sure if this
- applies to Hawaii. Maybe someone else can comment on that.
-
- As to the PACTOR subbands..you will usually find PACTOR stations operating
- in the .070 - .080 range of each band where those frequencies are authorized,
- e.g. 14.070-14.080, 7.070-7.80. An exception to this rule might be the WARC
- bands where 10.140 seems to be a popular frequency. Hope this helps.
-
- 73, Bob KG7WC
-
- --
- +---------------------+------------------------+-------------------------+
- | Robert J. Raymond | Spokane, Washington | bobr@on-ramp.ior.com |
- | Patricia Raymond | Amateur Callsign KG7WC | 70235.430@compuserv.com |
- +---------------------+------------------------+-------------------------+
-
- ------------------------------
-
- Date: 12 Aug 1994 00:13:04 -0400
- From: ihnp4.ucsd.edu!usc!howland.reston.ans.net!swiss.ans.net!newstf01.cr1.aol.com!search01.news.aol.com!not-for-mail@network.ucsd.edu
- Subject: PacTOR subbands
- To: ham-digital@ucsd.edu
-
- Joe,
-
- I can't answer the first part of your question; but I can tell you
- where you'll find the digital modes on 40 meters. From about 7.065 to
- about 7.070 you'll hear alot of AMTOR. A G-TOR station or two will hang
- around 7.070 to about 7.072.
- PacTOR freely takes up the spectrum from about 7.073 to about 7.080 or
- there abouts. At 7.080 to about 7.090, you'll hear alot of plain ol'
- vanilla RTTY. Above there you'll hear HF packet.
-
- Good luck and have fun!
-
- 73 de Larry N2ELW
- LarryN2ELW@AOL.com
-
- ------------------------------
-
- Date: Sun, 14 Aug 1994 01:19:22 GMT
- From: ihnp4.ucsd.edu!sdd.hp.com!usc!elroy.jpl.nasa.gov!netline-fddi.jpl.nasa.gov!nntp-server.caltech.edu!news.cerf.net!mvb.saic.com!eskimo!rdonnell@network.ucsd.edu
- Subject: PK-88 to Kenwood TM-231A interface
- To: ham-digital@ucsd.edu
-
- Jay Sissom (JAY@medicine.dmed.iupui.edu) wrote:
- : Last night, I built a cable to connect my PK-88 to my TM-231A. I don't have
- : the pin out here, but it was quite simple.
-
- : Unfortunately, the DCD lite on the PK-88 stays on when the radio is squelched.
- : Because of this, the PK-88 will never tell the radio to transmit. It
- : receives fine. If I am tuned to a repeater and there is no sound coming
- : through the repeater, then the DCD lite is off. I'm kind of confused. This
- : PK-88 has been hooked up to my Icon IC-28H for years with no problems.
-
- : Has anyone else seen this problem, and solved it?
-
- Sounds like you have one of the Kenwoods that has unsquelched audio on the
- mike connector. Without adding a 'true DCD' circuit (surgery required) to
- the PK-88, you will have to disconnect the receive audio wire in the Kenwood
- mike plug (green wire if you're using AEA's cable) and use the speaker jack
- on the back of the radio for receive audio - or back to the IC-28 :)
-
-
- : Thanks
- : Jay
- : KA9OKT
- : jay@medicine.dmed.iupui.edu
-
- Sure thing! 73
- Bob (ex AEA tech support guy)
- --
- ---------------------------------------------------------------------------
- Bob Donnell, kd7nm bob@ethanac.kd7nm.ampr.org rdonnell@eskimo.com
- Western Washington Amateur IP Address Coordinator (206) 775-3651
- ---------------------------------------------------------------------------
-
- ------------------------------
-
- Date: Fri, 12 Aug 1994 04:08:07 GMT
- From: ihnp4.ucsd.edu!usc!howland.reston.ans.net!agate!dog.ee.lbl.gov!newshub.nosc.mil!news!news@network.ucsd.edu
- Subject: Quadra 610 DOS/Packet Gold <-> PK232 Help: It's not working.
- To: ham-digital@ucsd.edu
-
- Hi. We have a problem with a Mac serial port controlling a PK232MBX:
- My father, WA7JHA, used PacketGold v8 with his AEA PD232MBX on an IBM
- 286AT clone for years.
-
- Now he has upgraded to an Apple Macintosh Quadra 610 DOS machine which
- has a 486 chip
- on board with DOS 6.0 and it runs the PacketGold software just fine.
- However, he's having
- trouble - in fact it isn't working at all - getting the software to
- interact with the PK232
- via a standard Hayes modem cable for the Mac, via the Mac modem serial
- port.
-
- The PacketGold software reports: "Turn the modem off" and when he
- complies, it reports
- "Unable to find modem on any serial port.."
-
- We have written to Apple, Interflex, and AEA about this, and are
- waiting for responses.
-
- We have Zterm, a basic terminal application for the Mac, but this
- doesn't make the PK232
- respond either.
-
- Who has run the Quadra 610 DOS with packet, and how did you do it?
- If you're using
- a DOS 486 card on a Quadra 610 (or any Mac) to control a serial port
- device, how is it working
- out?
-
- Please contact me via internet, (post a response if you like, but
- please email directly to me as well) with suggestions or comments
- regarding System 7 applications for packet on Macs
- or his specific problem.
-
- If you have a suggestion for who else to contact about this problem,
- please speak up. Thanks.
-
- Thanks for your help and 73.
-
- Roger Keating - KD6EFQ - Ken Keating - WA7JHA
- keating@nosc.mil
-
- ------------------------------
-
- Date: 16 Aug 94 02:52:40 GMT
- From: news-mail-gateway@ucsd.edu
- Subject: RE >Packet with Mac LC
- To: ham-digital@ucsd.edu
-
- >Subject: Packet Radio with apple LC ?
- >To: ham-digital@ucsd.edu
-
- >Hello there,
- >does anyone know how to use a mac (lc) for packet radio, i.e. with the baycom
- >or another
- >modem? Are programms available on anon. FTP sites ?
- > 73's Adrie.
-
- Dear Adrie,
-
- Your modem or printer ports on your Mac LC are RS-422 with is compatible with
- the RS-232 interfaces on most TNCs. The trick is to find the proper adapter
- cable to convert 8-pin DIN to 25-pin RS-232. Most Radio Shacks or Apple dealers
- sell them. Find the simplest, cheapest terminal program (some are available
- from ftp sites free) and see if you can communicate with the TNC with the
- terminal program. If you can do this you are ready to get on packet.
-
- Follow the TNC manufacturer's insructions for connecting it to your VHF/UHF
- radio. This may require a little cable soldering to make the proper connection
- to the PTT and earphone jack on your rig. Most TNC makers are good with
- detailed instructions.
-
- I use a Quadra 660 AV connected to a MFJ-1270B and can do standard BBS packet
- with a terminal program. I also am experimenting with TCP/IP using NET/Mac 2.3
- software (this requires a TNC with KISS capablilty. Good luck.
-
- Jerry Benterou kk6wb
- ampr: <jerry%kk6wb%ww6i@kg6kf.ampr.org>
- Internet: <benterou1@llnl.gov>
-
- Monday, August 15, 1994
- 7:52:40 PM
-
- ------------------------------
-
- Date: 14 Aug 1994 14:51:20 GMT
- From: nntp.crl.com!lgenco@decwrl.dec.com
- Subject: TAPR FTP SITE???
- To: ham-digital@ucsd.edu
-
- Michael Warchut (mwarchut@twain.ucs.umass.edu) wrote:
- : Does anyone know the ftp site for TAPR.
-
- Try:
- ftp.hereford.ampr.org
-
- 73 de N5SGL / Lou
-
- ------------------------------
-
- Date: Sun, 14 Aug 94 08:58:32 EDT
- From: ihnp4.ucsd.edu!dog.ee.lbl.gov!agate!howland.reston.ans.net!sol.ctr.columbia.edu!news.kei.com!world!mv!lmr!rapp@network.ucsd.edu
- Subject: TNC construction article
- To: ham-digital@ucsd.edu
-
- <BSoranno@vax2.winona.msus.edu> writes:
-
- > Does anybody know of a construction article for a "general purpose" TNC?
- >
- > These are my reguirements:
- > 1) Standard serial connection. (I have 4 different computers and would like
- > to be able to connect to all).
- >
- > 2) An internal processor of some type to minimize the overhead on the
- > computer.
- >
- > If these are too strict, please let me know.
- > Thanks.
- >
- > Bill Soranno -- KB0NKX
- > 7 Fairfax
- > Winona, MN 55987
- > 507/452-3789
-
- All TNC's fit your bill pretty well. They all run off a serial port, and
- contain a microcomputer to handle most of the overhead. MFJ, Kantronics,
- Tiny TNC - all will do what you want.
-
- Larry W1HJF
-
-
-
- -----------------------------------------------------------------------------
- L. M. Rappaport & Associates, Inc. rapp@lmr.mv.com voice +1 603 237 8400
- Colebrook, NH 03576-0158 CIS 72427,2567 fax +1 603 237 8430
-
- ------------------------------
-
- Date: 14 Aug 1994 20:18:14 GMT
- From: ihnp4.ucsd.edu!pacbell.com!sgiblab!uhog.mit.edu!news.kei.com!sol.ctr.columbia.edu!howland.reston.ans.net!vixen.cso.uiuc.edu!kspencer@network.ucsd.edu
- Subject: Widrow-Hoff LMS algorithm for DSP???
- To: ham-digital@ucsd.edu
-
- schenck@jicama.ece.ucdavis.edu (Jeff Schenck) writes:
-
- >In article <ahall-1308940337410001@ruger-5.slip.uiuc.edu> ahall@ux4.cso.uiuc.edu (Allen Hall) writes:
-
- > Hello again everyone,
-
- > I was wondering if you knew anything about the Widrow-Hoff LMS algorithm
- > that was used in Sept. 1992 QST's article "Low-Cost Digital Signal
- > Processing for the Radio Amateur". Appearantly the LMS algorithm is nice
- > to use to cut out signals that are repetetive when listening to SSB (you
- > wouldn't use it for CW- cause all you would hear instead of the morse code
- > was a "click" evertime a new tone came buy :)
-
- [stuff deleted]
-
- >LMS is a form of the steepest descent algorithm dating back to Cauchy
- >(or some other famous dead guy), where the gradient of the mean
- >squared error (MSE) with respect to the weight vector is used adjust
- >the weights so as to minimize the MSE.
-
- [stuff deleted]
-
- >As you can see, it's a simple algorithm to implement, which is why
- >it's so popular. It can be slow to converge, however, depending on
- >the error surface and the initial weight vector. Also, because it
- >never (or almost never) actually reaches the minimum MSE, the LMS name
- >is not quite acurate; some people prefer "stochastic gradient"
- >algorithm. But since it's so simple, it's easy to simulate and play
- >around with on a computer. Have fun.
-
- >--
- >Jeff Schenck
- >schenck@ece.ucdavis.edu
- >Department of Electrical and Computer Engineering __o
- >University of California _`\<,_
- >Davis, CA 95616 (_)/ (_)
- >(916) 752-1326 ~~~~~~~~~~~~~~~
-
-
- And by the way, the Widrow-Hoff algorithm is the same as a back-propagation
- neural network.
-
- -----------------------------------------------------------
- Kevin Spencer
- Cognitive Psychophysiology Laboratory and Beckman Institute
- University of Illinois at Urbana-Champaign
- kspencer@p300.cpl.uiuc.edu / kspencer@psych.uiuc.edu
- -----------------------------------------------------------
-
- ------------------------------
-
- End of Ham-Digital Digest V94 #273
- ******************************
-