| |
PA2AGA > HDDIG 09.10.99 16:15l 209 Lines 6585 Bytes #-9725 (0) @ EU
BID : HD_99_253B
Read: DL6KCF GUEST
Subj: HamDigitalDigest 99/253B
Path: DB0AAB<DB0ZKA<DB0CRL<DB0TTM<DB0FP<DB0SON<DB0SIF<DB0HSK<PI8DRS<PI8DAZ<
PI8GCB<PI8HGL<PE1NMB<EA7URC<PE0MAR<PI8VNW
Sent: 991009/1026Z @:PI8VNW.#ZH2.NLD.EU #:6840 [HvHolland] FBB7.00g $:HD_99_253
From: PA2AGA@PI8VNW.#ZH2.NLD.EU
To : HDDIG@EU
Received: from pa2aga by pi1hvh with SMTP
id AA20987 ; Sat, 09 Oct 99 10:14:50 UTC
Received: from pa2aga by pa2aga (NET/Mac 2.3.67/7.5.3) with SMTP
id AA00016288 ; Sat, 09 Oct 99 11:02:07 MET
Date: Sat, 09 Oct 99 10:52:36 MET
Message-Id: <hd_99_253B>
From: pa2aga
To: hd_broadcast@pa2aga
Subject: HamDigitalDigest 99/253B
X-BBS-Msg-Type: B
> > Station.
> Isn't this just the signal to noise ratio?!
No, since the Station is not listening to it's own signals.
If it were, then yes, it would be S/N at the Station.
In the case of EME, for example, Power Spread tells you
whether you will hear your own echos.
It's just a term used to describe the capability of the Station.
e.g. "My station is capable of 187 db in 500 Hz bandwidth on 2M."
If your Station has similar capability, and the path loss betwen us
plus the desired S/N is less than 187 db, we can work each other.
I have no idea if the term is used by commercial radio folks.
When I ran across it (with reference to EME communication)
I found it a nice intutive way to describe a station's capability.
--
... Hank
http://horedson.home.att.net
+61 3 9894 3362 USA: 1 888 667 7839
>.
------------------------------
Date: Wed, 6 Oct 1999 19:35:45 -0700
From: "Hank Oredson" <horedson@att.net>
Subject: Let's look at real numbers for TNC software sales
Brian Kantor <brian@karoshi.ucsd.edu> wrote in message
news:7te2l3$ac0$1@karoshi.ucsd.edu...
> Cathryn Mataga <cathryn@junglevision.com> wrote:
> >
> >And in nntp, how does it handle it when people come up with new fields,
like
> >Pactor@ww or pact@ww -- do you create a new newsgroup for
> >each type?
>
> That's a good way to handle it. The left-hand-side of the @ in the old
> PBBS addressing format can be thought of as a newsgroup, and the RHS as
> a distribution. Or you can swap the two, replace the @ with a dot, and
> see it as a hierarchical newsgroup name. Of these two schemes, I prefer
> the second one. e.g., you might have a pbbs.ww.pactor newsgroup where
> you stuff incoming pact@ww traffic.
We're using roughly that mapping, so we get, for example alt.ww.sysop.
Postings to alt.ww.sysop are gated through to SYSOP@WW and
vice versa. Quite simple. I've played a bit with gating
rec.radio.amateur.digital.misc
to and from RECRAD@WW just for giggles. Works ok. Have kept the
resultant BBS network bulletins local though; suspect I'd get even more
than the usual amount of flames if they were forwarded out of area.
> There are several Windows NNTP clients out there, but few servers.
> Linux, of course, and the various BSD OSs come with INN, which is a
> superb NNTP server. Perhaps having one of those accessable by the
> local community might be worthwhile.
SNOS handles all the required services and can run in Windows or
DOS as you wish. Linux is a good solution, but a lot of overhead
to get set up and running. It will, of course, do a lot more ...
> One problem is that most ham tcp/ip connections still run over lossy
> links. This causes delays as the lost packets get replaced. Where
> this is the biggest problem is that the Microsoft (and Macintosh)
> TCP implementations seem to be tuned for higher-performance networks
> where lost packets are far less frequent. Side-by-side, the Linux
> and BSD networking implementations work better in ham networks than
> the consumer-grade OSs. Since they're free, the Linux and BSD OSs
> don't present a cost problem, but they might require a bit more
> management skill (albeit, less often) than Win9X does. Still, it's
> fun either way.
For nntp, smtp and pop, even 1200 baud networks are somewhat useful.
nntp in particular, since there is usually no big hurry to get the latest
postings.
I've been working on the SNOS tcp/ip stack to make it run better over
AX.25 and NET/ROM links. The traditional tuning parameters don't work
very well over those links. Long discussion about AX.25 and NET/ROM
implementation problems avoided here ... <smile>
> That's why I play with it.
>
> - Brian
--
... Hank
http://horedson.home.att.net
>.
------------------------------
Date: Wed, 06 Oct 1999 17:22:24 -0400
From: Darryl Wagoner <darryl@sai.com>
Subject: Packet with an HT
Hi,
I have been able to receive with my VX5 but could never get the cable
to work for xmit. Then I picked up an old 2 meter rig that I am
now going to use for packet.
Good luck
Paul Dickson wrote:
>
> Has anybody successfully operated packet mode with a Yaesu VX-5R? The
> manual says you can, and shows how to make the interface cable. I did
> that. Hooked it to a Timewave PK-12.
>
> But the PK-12 is rejecting a large number of incoming packets unless the
> signal is really booming in strongly. (I set WHYNOT ON to see why packets
> are ignored, and it reports lots of "PASSALL" errors, which means the
> packets are ignored due to incorrect CRCs.)
>
> The guy I spoke to at Timewave said the PK-12 is pretty immune to incorrect
> setting of receiver volume - I have the volume set at about 10-oclock. I
> did have to turn the PK-12's output level down condiderably to meet Yaesu's
> spec that the level in to the mic jack be just 5mv.
>
> Would a 2m preamp help? Any other tips? I live in a very rural area.
>
> --
> Paul Dickson
> Opinions expressed are not necessarily those of Oracle Corporation.
--
Darryl Wagoner -- WA1GON
Moderator of the Global Early Warning EMail System
http://dova.sai.com/y2k/earlywarning.html
We need you!!!!
>.
------------------------------
Date: Wed, 6 Oct 1999 20:11:39 -0700
From: "Hank Oredson" <horedson@att.net>
Subject: Personal Mail Box Software
Tony Baca <tbaca@hpbs1129.boi.hp.com> wrote in message
news:7tdddq$ija$1@hpbs1500.boi.hp.com...
> I have an old TNC (TAPR) that does not support a personal
> mailbox. I also have an old MSDOS (286) computer that is
> looking for something to do. Is there any software that
> I could use to provide a personal mailbox with this
> equipment?
>
> Thanks
> _____
> /ony
Any of the usual BBS programs will do this job quite well.
MBL, MSYS, CBBS, AA4RE, etc. etc. all will run in DOS on a 286.
The newer programs (FBB, RLI, etc.) probably require a 386.
--
... Hank
http://horedson.home.att.net
>.
------------------------------
End of Ham-Digital Digest V99 #253
******************************
Attachment converted: Macintosh HD:money.txt (TEXT/MSWD) (00037BF4)
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
| |
