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ZL3AI > APRDIG 24.03.03 00:17l 107 Lines 3674 Bytes #999 (0) @ WW
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Subj: TAPR Digest, Mar 21, 2/2
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From: ZL3AI@ZL3VML.#80.NZL.OC
To : APRDIG@WW
Subject: MJF-9030 on HF APRS 10.151 ? Anyone?
From: "Douglas Quagliana" <dquagliana@hotmail.com>
Date: Sat, 22 Mar 2003 01:24:13 +0000
X-Message-Number: 17
MFJ's 9030 CW QRP rig looks like it *might* have a wide enough receive
filter to enable it to copy HF packet on 10.151.
Has anyone successfully copied 300 baud packet with an MFJ-9030?
Bonus points to you if you can tell me how to shift the transmitted CW
carrier to FSK it at the correct shift at 300 baud (using a TNC, a modem
disconnect header and ????). Anyone?
Douglas
dquagliana@hotmail.com
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Subject: Re: Homeland Security Threat Level Beacons
From: Bill Vodall <wa7nwp@jnos.org>
Date: Fri, 21 Mar 2003 17:40:34 -0800
X-Message-Number: 18
>Will this send the packets to the IS? If so, only one person needs
>to send the message out and the I-Gates can send them to the RF
>networks as the SYSOP wants.
That's ok if you want to depend on a single nationwide server. I believe
that it's a better scheme to have regional servers and even redundancy
there. If extra messages from the regionals radio transmissions end up on
the IS - that's no big deal.
73,
Bill - WA7NWP
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Subject: Re: MJF-9030 on HF APRS 10.151 ? Anyone?
From: WA8LMF2@aol.com
Date: Fri, 21 Mar 2003 21:45:43 EST
X-Message-Number: 19
In a message dated 3/21/2003 5:26:01 PM Pacific Standard Time,
dquagliana@hotmail.com writes:
>Has anyone successfully copied 300 baud packet with
>an MFJ-9030?
>
>Bonus points to you if you can tell me how to shift
>the transmitted CW carrier to FSK it at the correct
>shift at 300 baud (using a TNC, a modem disconnect
>header and ????). Anyone?
Try using MixW as a soundcard softmodem. You can tune the tones used in
200Hz Shift 300 baud mode to whatever arbitrary audio tone pair comes out of
the radio, using a waterfall display similar to the way PSK31 is tuned.
MixW can emulate a KISS TNC and output data to external applications via a
real or virtual serial port.
I thing you would be mainly receiving. 1 watt transmit isn't going to do
much on HF packet. I wouldn't worry about FSKing the TX. But if you want
to do it, Mix can provide a direct (DC level) FSK output for applications
where you don't want to use the AFSK output it generates via the soundcard.
It uses one of the handshaking lines of the serial port to do this.
Stephen H. Smith wa8lmf @ aol.com
Home Page: http://wa8lmf.com
Ham Radio/Mobile SSTV page: http://members.aol.com/wa8lmf/ham
APRS Stuff
http://members.aol.com/wa8lmf/aprs
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Subject: cheaper transceivers for HF APRS?
From: James Jefferson <jjeffers@aprsworld.net>
Date: Fri, 21 Mar 2003 15:31:48 -0600
X-Message-Number: 20
Hi group, as a follow-up on the question regarding the MFJ QRP rig.
I'm interested in a cheap, very very low standby current consumption radio
for HF APRS. My application is a remote solar powered weather station. The
radio would also have to be frequency stable over the temperature range of
northern Wisconsin (15 below to 100 degrees F).
-Jim KB0THN
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Subject: Re: Homeland Security Threat Level Beacons
From: <christensene@mebtel.net>
Date: Sat, 22 Mar 2003 02:45:43 -0000 (GMT)
X-Message-Number: 21
I think there has to be a better way...
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