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PA2AGA > HDDIG 13.08.00 19:16l 261 Lines 6808 Bytes #999 (0) @ EU
BID : HD_2000_219C
Read: GUEST
Subj: HamDigitalDigest 2000/219C
Path: DB0AAB<DB0ZKA<DB0GPP<DB0LX<DB0LEL<DB0TTM<DB0FP<DB0CWS<DB0AIS<DB0ME<
ON6AR<PI8HWB<PI8ZAA<PI8WFL<PI8HGL
Sent: 000813/1624Z @:PI8HGL.#ZH1.NLD.EU #:4578 [Den Haag] FBB $:HD_2000_219C
From: PA2AGA@PI8HGL.#ZH1.NLD.EU
To : HDDIG@EU
Date: Sun, 13 Aug 00 17:14:48 MET
Message-Id: <hd_2000_219C>
From: pa2aga@pe1mvx.ampr.org
To: hd_broadcast@pa2aga.ampr.org
X-BBS-Msg-Type: B
Date: Sat, 12 Aug 2000 13:11:20 GMT
From: k8cpa@arrl.net (chuck)
Subject: PSK31 Traders Net
Hi All,
The PSK31 Traders Net Meets every Saturday at 8:00P.M. EDT.
PSK31 - Traders, Traffic and Info
14.070
Your NCS is me, K8CPA
Prenet Starts at 7:00P.M!
See you then!
73
-Chuck K8CPA
Talk around the world....LEGALLY!
http://www.arrl.org/hamradio.html
How do you get your ham Ticket?
http://www.arrl.org/fastrak.html
------------------------------
Date: Sat, 12 Aug 2000 13:22:04 GMT
From: k8cpa@arrl.net (chuck)
Subject: PSK31 Traders Net
On Sat, 12 Aug 2000 13:11:20 GMT, k8cpa@arrl.net (chuck) wrote:
>Hi All,
>
>
>The PSK31 Traders Net Meets every Saturday at 8:00P.M. EDT.
>
>
>PSK31 - Traders, Traffic and Info
>
>14.070
>
>Your NCS is me, K8CPA
>
>Prenet Starts at 7:00P.M!
>
>See you then!
>
>73
>
>
Sorry about that all, The time for this net has changed.... The NEW
Net Time is 10:00P.M. EDT Prenet Starts at 9:00P.M. EDT
73
>-Chuck K8CPA
>
>Talk around the world....LEGALLY!
>http://www.arrl.org/hamradio.html
>
>How do you get your ham Ticket?
>http://www.arrl.org/fastrak.html
-Chuck K8CPA
Talk around the world....LEGALLY!
http://www.arrl.org/hamradio.html
How do you get your ham Ticket?
http://www.arrl.org/fastrak.html
------------------------------
Date: Sat, 12 Aug 2000 22:13:00 -0400
From: "Richard H." <rh3x@erols.com>
Subject: PSK31 Traders Net
Chuck: 14070 plus what tone? ....exact freq?
Tks,
de Richard/N2JR
On Sat, 12 Aug 2000 13:11:20 GMT, k8cpa@arrl.net (chuck) wrote:
>Hi All,
>
>
>The PSK31 Traders Net Meets every Saturday at 8:00P.M. EDT.
>
>
>PSK31 - Traders, Traffic and Info
>
>14.070
>
>Your NCS is me, K8CPA
>
>Prenet Starts at 7:00P.M!
>
>See you then!
>
>73
>
>
>-Chuck K8CPA
>
>Talk around the world....LEGALLY!
>http://www.arrl.org/hamradio.html
>
>How do you get your ham Ticket?
>http://www.arrl.org/fastrak.html
------------------------------
Date: Sat, 12 Aug 2000 21:12:19 -0500
From: "K5OKC" <ssampson@usa-site.net>
Subject: PSK31 Traders Net
I think it's 14.070 and it's the 3rd PSK31 signal from the left on the
waterfall
:-)
"Richard H." wrote
> Chuck: 14070 plus what tone? ....exact freq?
>
> Tks,
>
> de Richard/N2JR
------------------------------
Date: Sun, 13 Aug 2000 02:16:31 GMT
From: Marc Passy <laikaservices@yahoo.com>
Subject: Stupid Question
I've been reading up on Packet radio, and a question was prompted by
something I read, and I can't find the answer. A couple of documents
made a real point of differentiating between the data rate between the
computer/TNC and the TNC to the radio, as if they could ever be
effectively different. I understand data communications well, in
general, and I was wondereing, did I mis-read, or is there really some
effective difference?
I mean, if the highest effective bit rate out of the TNC is 9600, for
example, how can I possibly get more throughput?
Thanks in advance.
--
To reply, remove two pounds of spam-proofing.
My Opinions are all my own. Nobody else, especially the
people I work for, wants to claim them.
"At the core of the risk-free society is a self-indulgent failure of
nerve."
Edwin "Buzz" Aldrin, 1999
------------------------------
Date: Sat, 12 Aug 2000 22:32:53 -0400
From: "Bob Lewis" <rlewis@staffnet.com>
Subject: Stupid Question
> A couple of documents made a real point of differentiating
> between the data rate between the computer/TNC and the
> TNC to the radio, as if they could ever be effectively different
They usually are different. The TNC to Radio baud rate may be 1200
baud while the TNC to Computer (serial port) baud rate is usually much
higher (9600, 19.2, etc). The serial port uses a handshake (hardware
or software) to control the flow of data from the computer and prevent
the buffers in the TNC from overflowing. A higher baud rate is used on
the serial port in order to quickly fill up a packet during file
transfers so it can get transmitted by the TNC. That improves the
throughput. The total throughput is limited by the radio side though.
The throughput for 1200 baud is less than 1200 baud because of the
packet overhead (addressing, CRC check, etc). The more "real data" you
can stuff into a packet, the more efficient it is.
------------------------------
Date: Sat, 12 Aug 2000 21:21:42 -0500
From: "K5OKC" <ssampson@usa-site.net>
Subject: Stupid Question
"Marc Passy" wrote
> ...
> made a real point of differentiating between the data rate between the
> computer/TNC and the TNC to the radio, as if they could ever be
> effectively different.
>
> I mean, if the highest effective bit rate out of the TNC is 9600, for
> example, how can I possibly get more throughput?
Memory. A TNC is essentially a big buffer and a modem. With enough
memory you can fill up the buffer and then signal the computer to hold
off until it's through.
The TNC hardware is generally a microcontroller and very low horse-power,
so terminal baud rates are limited.
------------------------------
Date: Sat, 12 Aug 2000 23:47:38 GMT
From: "Colin Campbell" <mm5agm@cableinet.co.uk>
Subject: VB code for PSK31 utilising Moe's DLL
Hi All,
I am a bit disappointed to see that no one has released Visual Basic code
that shows how to use Moe Wheatley's (AE4JY) DLL. VB isn't the easiest
language to use with the DLL and it occurred to me that the lack of code
could be because programmers couldn't get past the initial hurdles of
sub-classing, to get to the messages sent from the DLL, and passing Arrays
to/from the DLL. I have quickly written some code that decodes the PSK
signal and shows how some of the Moe's functions work. I am working on the
transmit side but have to admit that it doesn't work yet. My reason for
writing this is to show others how to get past these initial hurdles. If you
are a VB programmer and would like to write a PSK31 program using the DLL I
will send you the code I have. ( if there are too many requests I'll put it
on my webpage ) Note that this code is no use to you unless
you have Visual Basic 6. I am not releasing a compiled usable program for
PSK31 because I think there are more than enough simple programs already. If
you
want the code e-mail me and confirm that you have Visual Basic 6 so that you
can compile it. If the above means nothing to you then PLEASE do not request
the code!
Colin MM5AGM
------------------------------
End of Ham-Digital Digest V2000 #219
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