QRZ! Ham Radio 4/QRZ Ham Radio Callsign Database - Volume 4.iso/digests/digital/940290.txt

Internet Message Format | 1994-11-13 | 20KB

Date: Wed, 31 Aug 94 04:30:17 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 #290
To: Ham-Digital


Ham-Digital Digest          Wed, 31 Aug 94       Volume 94 : Issue  290

Today's Topics:
                         1200/9600 Packet TNC
            9600 baud using Kenwood TM201 & TM401 (2 msgs)
                    HF Packet (Mac vs PC) (2 msgs)
                   MSYS 1.17 Fwd Flood vs Routing?
                         Packet and Internet?
                       Recognize this PROMer???
                        RS232 --> FT990 FSK ?
                        TAPR Library (2 msgs)
                        Which DSP kit to buy?

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: Tue, 30 Aug 1994 02:23:55 GMT
From: ihnp4.ucsd.edu!usc!howland.reston.ans.net!gatech!newsxfer.itd.umich.edu!jobone!lynx.unm.edu!mack.rt66.com!kb5rtk.einet.com![e-mail]
Subject: 1200/9600 Packet TNC
To: [e-mail]

Bob,

>For radios I have sucessfully used:
>Icom IC-290 (the first radio I modified)
>Icom IC-22S (uses diode matrix synthsizer in 15 kHz steps.  Designed for
>146-148, tho usually goes to 145.35 or so OK.)
>GE MVP (high band VHF - xtal controlled, easy to modify)

>I currently use the GE on the local 2M packet repeater, as I hope one day to
>get the IC-290 back on SSB.  The IC-22S is probably going to get modified to
>20 kHz channel spacing and to cover the whole 2M band.  Then it will
>probably go into my (ever evolving) portable packet station.

>Hope that gives some insight on 9600 operations.

The new Kenwood TM-451A is really sweet for 440 9600 baud!

Cliff
___________________________________________________________________________
Cliff Nail
US - 227   USWA!!!!
KB5RTK - Ham radio on the water .....  There is no faster Ham on the water!
Internet - [e-mail]
Ham internet 44.30.0.54 (KB5RTK on 145.01 MHz - Albuquerque NM)

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

Date: 30 Aug 94 07:27:00 GMT
From: elroy.jpl.nasa.gov!swrinde!cs.utexas.edu!convex!news.duke.edu!news-feed-1.peachnet.edu!emory!wa4mei!totrbbs![e-mail]
Subject: 9600 baud using Kenwood TM201 & TM401
To: [e-mail]

-> From: Tom WB7ASR <[e-mail]>
-> Newsgroups:
-> rec.radio.amateur.equipment,rec.radio.amateur.digital.misc Subject:
-> 9600 baud using Kenwood TM201 & TM401
-> Date: Mon, 29 Aug 94 08:55:17 PDT
-> Message-ID: <33t0gk$[e-mail]>
->
-> Does anyone have 9600 baud mod information for the Kenwood TM201
-> (2meters) and TM401 (70cm) FM radios? Please post here or send
-> direct.
->
-> Thanks, 73s
-> Tom WB7ASR...

Tom,

I have been trying to get the TM401 to work reliably at 9600 baud with 6
months, and I can tell you from direct experience that it is NOT a good
candidate for modification. The problem is isolated to the transmit
interface: the TM401 uses a PLL curcuit that is close coupled to the
VCO. In the normal approach to 9600 interface, you insert the 9600 audio
directly at the Varactor in the VCO and everything works fine. In this
case, the PLL senses a frequency drift after all but the shortest of
packets, and commences to cancel the drift. The net effect is to cause
short packets to transmit OK but long packets are almost always corrupt.
FYI, the receive side is great, as the TM401 uses the CF455E
discriminator, which gives excellent receive bandwidth in the IF.

I haven't given up completely. James Miller, G3RUH, has agreed to look
at the schematics of this rig with ideas on ANY POSSIBLE way to make the
rig work. Possibilities are to lengthen the RC time constant in the
PLL's feedback curcuit, or perhaps modulate the master reference
oscillator of the PLL, along with the Varactor. (To prevent the PLL from
detecting a frequency drift) James just sent me a confirming note on
8/28 acknowledging receipt of the info package, and his intent to shart
on the project in the near future.

Finally, if you just insist on aggravating yourself, <grin> I will send
the interface points in a follow up email. Also, I'll be happy to let
you know what James Miller says on best ideas on the TM401 interface.
BTW, the TM201 will work the same way, I'm sure.

Regards,
Steve Diggs, President
East Atlanta LAN

----
Top Of The Rock BBS - Lilburn, GA         SYSOP: Steve Diggs
UUCP: totrbbs.atl.ga.us               Snailmail: 4181 Wash Lee Ct.
Phone: [phone]                           Lilburn, GA 30247-7407

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

Date: Tue, 30 Aug 94 10:10:36 PDT
From: ihnp4.ucsd.edu!dog.ee.lbl.gov!agate!howland.reston.ans.net!gatech!news-feed-1.peachnet.edu!news.duke.edu!eff!news.kei.com!ssd.intel.com!chnews![e-mail]
Subject: 9600 baud using Kenwood TM201 & TM401
To: [e-mail]

Steve,

I have the 201/401 pair sitting in my storage cabinet collecting dust and I
would like to put them to use. I would appreicate if you would eMail me or post
the mod information that you currently have. I would like to at least do the
receive mod so I can monitor the 9600 baud activity around the valley.

Please keep me on your eMail list, if and when you resolve the transmit issue.
I will do the same on this end, if I find out any other information.

Thanks & 73s,
Tom WB7ASR

[e-mail]

In article <[e-mail]>, <[e-mail]>
writes:
> Path:
chnews!ennews!asuvax!cs.utexas.edu!convex!news.duke.edu!news-feed-1.peachnet.ed
u!emory!wa4mei!totrbbs!steve.diggs
> From: [e-mail] (Steve Diggs)
> Newsgroups: rec.radio.amateur.digital.misc
> Subject: 9600 baud using Kenwood TM201 & TM401
> Message-ID: <[e-mail]>
> Date: 30 Aug 94 07:27:00 GMT
> Distribution: world
> Organization: Top Of The Rock BBS Atl, GA 404-921-8687
> Reply-To: [e-mail] (Steve Diggs)
> References: <33t0gk$[e-mail]>
> Lines: 50
>
> -> From: Tom WB7ASR <[e-mail]>
> -> Newsgroups:
> -> rec.radio.amateur.equipment,rec.radio.amateur.digital.misc Subject:
> -> 9600 baud using Kenwood TM201 & TM401
> -> Date: Mon, 29 Aug 94 08:55:17 PDT
> -> Message-ID: <33t0gk$[e-mail]>
> ->
> -> Does anyone have 9600 baud mod information for the Kenwood TM201
> -> (2meters) and TM401 (70cm) FM radios? Please post here or send
> -> direct.
> ->
> -> Thanks, 73s
> -> Tom WB7ASR...
>
> Tom,
>
> I have been trying to get the TM401 to work reliably at 9600 baud with 6
> months, and I can tell you from direct experience that it is NOT a good
> candidate for modification. The problem is isolated to the transmit
> interface: the TM401 uses a PLL curcuit that is close coupled to the
> VCO. In the normal approach to 9600 interface, you insert the 9600 audio
> directly at the Varactor in the VCO and everything works fine. In this
> case, the PLL senses a frequency drift after all but the shortest of
> packets, and commences to cancel the drift. The net effect is to cause
> short packets to transmit OK but long packets are almost always corrupt.
> FYI, the receive side is great, as the TM401 uses the CF455E
> discriminator, which gives excellent receive bandwidth in the IF.
>
> I haven't given up completely. James Miller, G3RUH, has agreed to look
> at the schematics of this rig with ideas on ANY POSSIBLE way to make the
> rig work. Possibilities are to lengthen the RC time constant in the
> PLL's feedback curcuit, or perhaps modulate the master reference
> oscillator of the PLL, along with the Varactor. (To prevent the PLL from
> detecting a frequency drift) James just sent me a confirming note on
> 8/28 acknowledging receipt of the info package, and his intent to shart
> on the project in the near future.
>
> Finally, if you just insist on aggravating yourself, <grin> I will send
> the interface points in a follow up email. Also, I'll be happy to let
> you know what James Miller says on best ideas on the TM401 interface.
> BTW, the TM201 will work the same way, I'm sure.
>
> Regards,
> Steve Diggs, President
> East Atlanta LAN
>
> ----
> Top Of The Rock BBS - Lilburn, GA         SYSOP: Steve Diggs
> UUCP: totrbbs.atl.ga.us               Snailmail: 4181 Wash Lee Ct.
> Phone: [phone]                           Lilburn, GA 30247-7407

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

Date: Mon, 29 Aug 1994 23:48:07 GMT
From: taligent!tom-taylor.taligent.com![e-mail]
Subject: HF Packet (Mac vs PC)
To: [e-mail]

>
> As a shipboard user, you will be interested to know that there were (also as
> of 5 months ago) no offerings at all for grey-scale fax reception/display
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> for the Mac, anywhere, for any price, that I had heard of.  I had >lots< of
> requests for this kind of capability, and after looking at the prices of
> stand-alone FAX printers, a few of the Mac users decided to get a PC laptop
> just for receiving FAX.  This is a great frustration to a lot of the marine
> dealers too, as the Mac laptops appear to be rather popular among the
> boating community.


MFJ's MacMultiCom 1.0 for the 1278 DOES support 16 level grayscale FAX
reception and transmission.  It also supports color SSTV in a number
of different popular formats.  The program takes advantage of System 7
features, but will still work on a MacPlus (of course you only get B&W
pictures then).  MacMultiCom supports all of the other 1278 modes, too.

Unfortunately, MFJ doesn't advertise it very much.  However, they've been
shipping it for over a year.

AH6IX and I wrote the program for MFJ.

--
Tom Taylor
aa6br

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

Date: 30 Aug 1994 13:28:34 GMT
From: ihnp4.ucsd.edu!dog.ee.lbl.gov!agate!howland.reston.ans.net!cs.utexas.edu!chpc.utexas.edu!news.utdallas.edu!corpgate!bcarh8ac.bnr.ca!bcarh8ab.bnr.ca![e-mail]
Subject: HF Packet (Mac vs PC)
To: [e-mail]

In article <[e-mail]>
[e-mail] (Tom Taylor) writes:

> MFJ's MacMultiCom 1.0 for the 1278 DOES support 16 level grayscale FAX
> reception and transmission.  It also supports color SSTV in a number
> of different popular formats.  The program takes advantage of System 7
> features, but will still work on a MacPlus (of course you only get B&W
> pictures then).  MacMultiCom supports all of the other 1278 modes, too.
>
> Unfortunately, MFJ doesn't advertise it very much.  However, they've been
> shipping it for over a year.
>
> AH6IX and I wrote the program for MFJ.
>
And I've been using it for the better part of last year.  Works well
with
both an LC and PB170.  I especially like the separate windows for each
mode,
and easy switching from one to the other.  I could generate a wishlist
for
the program, and wonder if Tom or MFJ are planning subsequent versions?


Peter Dodd VE3IPD
Bell Northern Research
Ottawa Canada
(My opinions not BNR's)

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

Date: Tue, 30 Aug 1994 11:33:34 JST
From: pa.dec.com!tanuki.twics.com![e-mail]
Subject: MSYS 1.17 Fwd Flood vs Routing?
To: [e-mail]

How can I make distinctions in my MSYS forwarding files between the
use of a word for a flood routing pattern ( @ ASIA) and as part of
a hierarchical address ( HL1XXX @ HL1YYY.KOR.ASIA) ?

Is there an MSYS internet mailing list?

Thanks & 73,  Jim  7J1AJH/AI8A  [e-mail]
                        packet: 7J1AJH @ 7J1YAA.10.JNET1.JPN.AS
                           www: file://twics.co.jp/html/hamradio.html

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

Date: Tue, 30 Aug 94 01:42:58 -0500
From: news.delphi.com![e-mail]
Subject: Packet and Internet?
To: [e-mail]

 I don't know anything about the Packet world but I am wondering if it is
common (possible) to access the internet (mail? usenet? irc?) with a packet
rig?
William Como - [e-mail] -N2QMU
P.S. What is there on packet?

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

Date: 30 Aug 1994 03:19:12 GMT
From: ihnp4.ucsd.edu!usc!howland.reston.ans.net!gatech!news-feed-1.peachnet.edu!hobbes.cc.uga.edu!aisun3.ai.uga.edu![e-mail]
Subject: Recognize this PROMer???
To: [e-mail]

At a swap meet I recently bought (very cheaply) a device that is said to be
an EPROM programmer, and which consists of a 2 x 5-inch board containing a
28-pin socket, a 68HC705, a ROM, and a few other chips one of which is
labeled "Altera module."

Coming out one end is a flat cable with a 24-pin DIP plug, obviously for
EPROM emulation or something like that.

But the fellow who sold it to me said that it could be connected to the
serial port of a PC using a few of the wires in the 24-conductor cable,
and the software for programming EPROMs was then in the firmware on the
board, with the PC serving only as a terminal.

Obviously, the power supply is missing and I can't do anything without
knowing the pinout.  Does anyone recognize this product?

--
< Michael A. Covington, Assc Rsch Scientist, Artificial Intelligence Center >
< The University of Georgia, Athens, GA 30602-7415 USA  [e-mail] >
< Unless specifically indicated, I am not speaking for the University. >  <><
> "To 'see through' all things is the same as not to see them." -C.S. Lewis <

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

Date: Mon, 29 Aug 1994 19:03:30 GMT
From: equalizer!timbuk.cray.com!cdsmail!uchinews!kimbark![e-mail]
Subject: RS232 --> FT990 FSK ?
To: [e-mail]

I need to interface RS232 from a TNC to my FT-990.
There is no info on the FT-990 FSK input signal
levels - but those who know say it is TTL.

Is there a good universal way to interface RS232
to TTL ? how about an opto-isolator ?

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

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

Date: Tue, 30 Aug 1994 02:27:54 GMT
From: ihnp4.ucsd.edu!usc!howland.reston.ans.net!math.ohio-state.edu!cs.utexas.edu!chpc.utexas.edu!news.utdallas.edu!feenix.metronet.com![e-mail]
Subject: TAPR Library
To: [e-mail]

In message <[e-mail]> - mmunster@qua
lcomm.com (Marvin J. Munster) writes:
>Does anyone know the FTP address for TAPR?  The one I have doesn't seem to
>be working.
>
>Marvin.  WB6PKK
>
  Marvin, when you find it, please post it. i would like to get
  to the ftp server also.

Neal McEwen K5RW, Dallas

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

Date: 30 Aug 1994 06:52:21 GMT
From: ihnp4.ucsd.edu!library.ucla.edu!europa.eng.gtefsd.com!howland.reston.ans.net!cs.utexas.edu!news.unt.edu!tcet.unt.edu![e-mail]
Subject: TAPR Library
To: [e-mail]

Marvin J. Munster ([e-mail]) wrote:
: Does anyone know the FTP address for TAPR?  The one I have doesn't seem to
: be working.

Here is the most recent information.  TAPR.ORG will be changing
locations the end of the week, so some outages might result.

In addition, I just found out that the ftp site we use had an 'act of god'
failure last week and Bill Beech is working on reestablishing the
system.  I do not have a current report, but it should be available now
or very soon.

Cheers - Greg

---

'[e-mail]' can also be used to access TAPR's file system.
The electronic issue of the PSR (Packet Status Regiester) is now being made
available via the server as a file.   If your club editor is looking
for packet articles and information to republish this is a great source.
To get more information, send Internet mail to '[e-mail]'
and include in the message of the body the command 'help'.

---

The TAPR Software Library is now available via anonymous FTP.  You can
access the library by ftp access to 'ftp.hereford.ampr.org' in the directory
pub/hamradio/tapr.  Login in as 'anonymous', with a password of
'your_account@internet_address'.


------------------------------------------------------------------------
Tucson Amateur Packet Radio
8987-309 E Tanque Verde Rd #337 * Tucson, Az * 85749-9399 * 817-383-0000

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

Date: Mon, 29 Aug 1994 20:35:27 GMT
From: ihnp4.ucsd.edu!sdd.hp.com!math.ohio-state.edu!sol.ctr.columbia.edu!usenet.ucs.indiana.edu!indyvax.iupui.edu!jsissom.dmed.iupui.edu![e-mail]
Subject: Which DSP kit to buy?
To: [e-mail]

>There are two kits, the 'C26 DSK which is based on the TMS320C26 processor
>and the 'C50 DSK which is based on the TMS320C50 processor.

>You could say that the 'C50 is the next generation up from the 'C26
>in that it has more memory and is faster.  Both are fixed point (as
>opposed to floating point) processors and will do just about any
>DSP trick that you want. Both chips have built-in memory.

>The boards are small, approximately 2.5 X 4 inches and have the
>necessary A/D and D/A chip (TLC3240).

>There is an analog input and output (rca jacks) and a serial connector
>(9 pin RS232).  You have to supply a 9VAC plug-in-the-wall (Radio
>Shack) power supply.

>TI supplies a simple Assembler and a Debugger.  They also throw in
>a loader and a couple of sample programs.  No, there is not a
>'C' compiler :-)

>You connect the 9VAC (notice AC) power supply, attach a cable from
>the board to your serial port on your PC and then you can download
>or debug programs.

>There are quite a few Ham type programs for the 'C26 DSK on the
>internet.  'C26 programs can be converted to 'C50 programs with
>some effort.

>The cost is $99.00.  I am not sure what the availability is at
>this time (Wyle, Marshall, etc)

I received one from Arrow Electronics last week.  It took a little less than a
week to get, so availablility is very good.

Jay


>If any more questions, Email me.

>Smitty, NA5K
>--
>Henry Smith ([e-mail])

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

Date: 30 Aug 1994 07:01:09 -0700
From: nntp.crl.com!crl3.crl.com![e-mail]
To: [e-mail]

References <[e-mail]>, <33jn2v$[e-mail]>, <[e-mail]>
Subject : Re: Which DSP kit to buy?

Jay Sissom ([e-mail]) wrote:
: I received one from Arrow Electronics last week.  It took a little less than a
: week to get, so availablility is very good.

: Jay


Is there an 800 number for Arrow or should they call their local Arrow
number?

Thanks,

Smitty, NA5K
--
Henry Smith ([e-mail])

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

End of Ham-Digital Digest V94 #290
******************************