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Subject: HamDigitalDigest 2000/91A
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Ham-Digital Digest Fri, 31 Mar 2000 Volume 2000 : Issue 91
Today's Topics:
Baycom and Linux
Boost a digital RF signal? (2 msgs)
Can you identify the mystery signal? (2 msgs)
Digipan
Digital Amateur Radio License (10 msgs)
Dolt needs suggestions on KamPlus v.8 software
IC-735 Software?
ICOM 746 and PK-232 (2 msgs)
May QEX digital voice article (2 msgs)
MFJ-1278 and Pactor
Need description of FSTV TR70A
Rtty and PSK 31 interface Help needed
RTTY Contests Software for SWL ?
Sound card programming
Trade Hal PCI-4000
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Archives of past issues of the Ham-Digital Digest are available
(by FTP only) from ftp.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.
Loop-Detect: Ham-Digital:2000/91
----------------------------------------------------------------------
Date: 23 Mar 2000 05:54:15 GMT
From: nielsen@primenet.com (Bob Nielsen)
Subject: Baycom and Linux
On Wed, 22 Mar 2000 19:41:50 -0800, Kevin wrote:
>Hi,
>
>Does anyone know if there is program to allow use of the simple
>Baycom modem with Linux?
Compile support into the kernel and it will work with all sorts of
programs.
--
Bob Nielsen, N7XY (RN2) nielsen@primenet.com
Tucson, AZ DM42nh QRP-L #1985 SOC #77 http://www.primenet.com/~nielsen
------------------------------
Date: Fri, 31 Mar 2000 03:58:07 GMT
From: chiral_dude@my-deja.com
Subject: Boost a digital RF signal?
I have one of thoes Genie Intelicode door locks and I like it except for
the whimpy range of the keychain transmitter.
I am thinking about building an RF repeater that could pickup the
transmitter signal and then give it a boost so it works from 20 yards
instead of 20 feet. It uses a rolling code for security so it must be a
digital signal.
I am thinking all I have to do is tune it to the transmitter frequency
and let it boost any signal it receives.
Am I on the right track or is it more complicated than that? What would
I call this circuit/device so I can search for it using a keyword?
BDS
Sent via Deja.com http://www.deja.com/
Before you buy.
------------------------------
Date: Thu, 30 Mar 2000 20:55:46 -0800
From: "Cathryn Mataga" <cathryn@junglevision.com>
Subject: Boost a digital RF signal?
<chiral_dude@my-deja.com> wrote in message news:8c17oa$i7j$1@nnrp1.deja.com...
> I have one of thoes Genie Intelicode door locks and I like it except for
> the whimpy range of the keychain transmitter.
>
> I am thinking about building an RF repeater that could pickup the
> transmitter signal and then give it a boost so it works from 20 yards
> instead of 20 feet. It uses a rolling code for security so it must be a
> digital signal.
>
> I am thinking all I have to do is tune it to the transmitter frequency
> and let it boost any signal it receives.
>
> Am I on the right track or is it more complicated than that? What would
> I call this circuit/device so I can search for it using a keyword?
What about putting a better antenna on the door receiver?
Seems like that would be simpler. Just find the frequency
it's on, and make a little dipole or something -- raise it
up in the air a bit.
------------------------------
Date: Wed, 22 Mar 2000 11:38:31 -0600
From: "John Dewey" <KA9CAR@NS.arrl.net>
Subject: Can you identify the mystery signal?
I have heard that signal on most ham bands above 20 meters. It is a good
way to find the MUF.
I have two theories. 1) It is some kind of natural signal that is running
near the MUF, or 2) it is over the horizon radar, less annoying than the old
woodpecker style radar. I don't think it is natural.
KA9CAR
Michael Borowiec wrote in message <8baokf$10m$1@Mars.mcs.net>...
>I've been hearing a strange signal on 17 meters lately, and I cannot
>identify it. I have a 15 second sound bite on the web which was recorded
>on March 22, 2000 at approximately 0500Z on 18.090 MHz, and I tuned up
>1 KHz during recording. I think it sounds like water falling over rocks.
>If you know what this signal is, please send me an e-mail, and I'll post
>the answer.
>
>Here's the URL pointing to the sound bite (100KB MP3).
>http://www.mcs.net/~mikebo/personal/water.mp3
>
>Regards,
>- Mike, WA9CQ
------------------------------
Date: 22 Mar 2000 23:38:13 -0600
From: mikebo@Mars.mcs.net (Michael Borowiec)
Subject: Can you identify the mystery signal?
Thanks to everyone who responded... especially Jack, WA9FVP, who
correctly identified the signal as ALE, or Automatic Link Establishment.
ALE is a protocol for automatically determining an available channel on
HF frequencies. Radios that implement ALE are currently being sold by
Motorola and others.
Check out:
http://www.motorola.com/LMPS/RNSG/mobiles/micom/micom_2e/
Also, a ham in England has written software to implement ALE protocol
on two specific amateur radios, including the ICOM 706.
Check out:
http://www.chbrain.dircon.co.uk/
73, Mike, WA9CQ
In article <8baokf$10m$1@Mars.mcs.net>,
Michael Borowiec <mikebo@Mars.mcs.net> wrote:
>I've been hearing a strange signal on 17 meters lately, and I cannot
>identify it. I have a 15 second sound bite on the web which was recorded
>on March 22, 2000 at approximately 0500Z on 18.090 MHz, and I tuned up
>1 KHz during recording. I think it sounds like water falling over rocks.
>If you know what this signal is, please send me an e-mail, and I'll post
>the answer.
>
>Here's the URL pointing to the sound bite (100KB MP3).
>http://www.mcs.net/~mikebo/personal/water.mp3
>
>Regards,
>- Mike, WA9CQ
------------------------------
Date: Thu, 23 Mar 2000 14:37:57 GMT
From: dpknight@digital.com (Dave Knight)
Subject: Digipan
In article <8apg96$g8s$1@news.cy-net.net>, dyess@txcyber.com (Dale Dyess)
To be continued in digest: hd_2000_91B
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