| |
PA2AGA > HDDIG 23.09.99 06:00l 193 Lines 7200 Bytes #-9769 (0) @ EU
BID : HD_99_238J
Read: GUEST
Subj: HamDigitalDigest 99/238J
Path: DB0AAB<DB0FSG<DB0PV<OE2XOM<OE5XBL<DB0RGB<OK0PPL<OK0POK<OK0PAB<HA5OB<
HA3PG<SV1AAW<EA7URC<PE0MAR<PI8VNW
Sent: 990922/2343Z @:PI8VNW.#ZH2.NLD.EU #:1534 [HvHolland] FBB7.00g $:HD_99_238
From: PA2AGA@PI8VNW.#ZH2.NLD.EU
To : HDDIG@EU
Received: from pa2aga by pi1hvh with SMTP
id AA19571 ; Wed, 22 Sep 99 22:30:07 UTC
Received: from pa2aga by pa2aga (NET/Mac 2.3.67/7.5.3) with SMTP
id AA00015827 ; Wed, 22 Sep 99 21:24:31 MET
Date: Wed, 22 Sep 99 21:17:43 MET
Message-Id: <hd_99_238J>
From: pa2aga
To: hd_broadcast@pa2aga
Subject: HamDigitalDigest 99/238J
X-BBS-Msg-Type: B
On HF most systems are frequency agile. i.e. the recievers scan a list
of frequencies when waiting for incoming connections. For outgoing
connections, different frequencies are attempted until a link is
established.
The order of frequencies attempted for a given path changes during
the year and during the sunspot cycle, so the sysop needs to make occasional
changes. Some systems are point to point. Examples:
I have one radio on 7.087 (LSB CLOVER) full time. It is used to link
the Pacific NW to Central and Southern California. The 40M band is
open between these locations nearly 24 hours per day.
My other radio scans various frequencies on the 10/15/20 meter bands.
It is mainly used for a CLOVER link with WB1DSW in New Hampshire.
Optimal conditions might be on any of these bands. During daylight, the
attempt is first made on 10M, then on 15, and last on 20. At night the
10M attempt is not made.
Another example: if N0IA in Florida has NTS traffic for the Pacific NW,
he has the choice of 3 or 4 stations using CLOVER, and another 5 or 6
using PACTOR. Between us we cover "most" bands 100% of the time.
I do not know what N0IA has as his list of attempts, but I do notice
him connect here on 20M most often.
> Please understand that I ask these questions as a systems guy, not a
> programmer. I hope I haven't gotten to far off the track.
The systems implications are "interesting". There need to be lists of which
station scans what frequencies with what capability. Sysops need to
discuss routing changes from time to time. Stations drop out of the net,
new stations arrive. Propagation changes, making some links useless
and other links improve. Example: with 10M now open most days, I
can move a LOT of traffic to/from WB1DSW because the link is very
good; we often get actual data rates well above 300 BPS for hours at
a time.
We need more participation in these HF nets. Many sysops have shut
down because the traffic into and out of their area was grabbed off
the ham radio nets and moved to the internet instead. To a large extent,
those sysops have not been replaced, and the HF nets are rapidly dying.
---
... Hank
http://horedson.home.att.net
>.
------------------------------
Date: Tue, 21 Sep 1999 23:51:12 -0700
From: "Cathryn Mataga" <cathryn@junglevision.com>
Subject: Those Wide, Open Spaces
Hank Oredson wrote in message <7s9ep5$d68$1@bgtnsc02.worldnet.att.net>...
>> Well, the scoop is that the super duper new generation of BBS's equiped
>> with the ultra-nifty, but slightly expensive PCTII boxes are able to scan
>> scan many bands and many HF frequencies.
>
><rest deleted>
>
>Does not need an expensive controller. Some folks use PK-232
>and standard PACTOR, or use the P-38 CLOVER/PACTOR
>boards (can be found used for $200 or less). An old junker
>386 or 486 is good enough to run some of the software, some
>requires Windows and a faster machine. However it is a good
>idea to have a reasonably good HF setup ...
Yeah, interesting. I'm still a little unclear how these systems
work exactly. I thought the scanning was a feature of the PCTII.
Or, I'm still not exactly clear what the difference between the
PCT2e and the old boxes will be. I'd write some scanning
code myself -- except I'm out of serial ports on that machine,
and need to re-organize stuff properly to get it all together
properly. I got the computers, but I'm dreading setting up
another one.
Me, I think my little 3'el triband beam does okay on 20/15/10, or
at least I seem to be able to connect pretty good to stations I call.
Though I think my 40m antenna still needs to go up a little higher
to really make things happen on that band. (Seems however
'good' my HF setup is, it's never quite good enough.)
I guess the internet forwarding people are still plugging away on the
-- though it seems that the prominent ones I've looked up seem to
have shut down their HF forwarding of PBBS and VHF radio ports
in favor of systems to link people aboard ships to email. Where,
me, I'm not on a boat, so that's not so interesting.
Does anyone forward from the US to Japan, btw? And, come to think
of it, is anyone interested in setting my call KE6I, as a BBS call, and
specifying some stuff to forward to me, so I can test out my new code
with some real data. I have Pactor 1, and a 3 'el beam at 30 feet or
so, and a dipole and Butternut for 40m and 30m on the roof. I can
run the amp, as long as I don't switch bands, and I'm in Berkeley
California. I am properly coordinated, as a full-service BBS, though
I haven't seemed to have shown up on the TAPR list yet.
>.
------------------------------
Date: Tue, 21 Sep 1999 11:22:04 -0500
From: Steve Heller <stheller@koyote.com>
Subject: Weather fax receiving software for PK 232 wanted
I would appreciate any leads on where I can find some weather fax
software that will run with my PK 232 TNC. It doesn't have to be
fancy, and I'm not planning to send any weather faxes (if that's an
option anyway). Freeware, shareware, or commercial software are all
acceptable.
--
Steve Heller, WA0CPP
PGP public key available from http://pgpkeys.mit.edu:11371
http://www.koyote.com/users/stheller/homepage.html
Author of "Who's Afraid of C++?", "Who's Afraid of More C++?",
"Optimizing C++", and other books
>.
------------------------------
Date: Tue, 21 Sep 1999 18:47:50 -0500
From: "Rick Ruhl" <ricker@cssincorp.com>
Subject: Weather fax receiving software for PK 232 wanted
Hi Steve,
We will be releasing Wefax '99 for AEA/Timewave TNCs in October. This will
be like the Wefax '99 that is out for the Kantronics, and will retail in for
$49.95. It will work on the PK-232 and the PK-900 in 2 color fax mode.
We did our first major internal test with it today with the Halifax wefax
station and was quite impressed with the results. Having the DSP addon to
the PK-232 made it very readable, even with the S7 noise level we had.
--
Rick Ruhl
President, Creative Services Software
http://www.cssincorp.com
Steve Heller wrote in message ...
>I would appreciate any leads on where I can find some weather fax
>software that will run with my PK 232 TNC. It doesn't have to be
>fancy, and I'm not planning to send any weather faxes (if that's an
>option anyway). Freeware, shareware, or commercial software are all
>acceptable.
>
>--
>Steve Heller, WA0CPP
>PGP public key available from http://pgpkeys.mit.edu:11371
>http://www.koyote.com/users/stheller/homepage.html
>Author of "Who's Afraid of C++?", "Who's Afraid of More C++?",
>"Optimizing C++", and other books
>.
------------------------------
End of Ham-Digital Digest V99 #238
******************************
You can send in your contribution to this digest by
sending an e-mail to: hd-group@pa2aga.ampr.org
or (via BBS-net) to: hdaga@pi8vnw.#zh2.nld.eu
Read previous mail | Read next mail
| |
