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ZL3AI > APRDIG 13.09.06 01:48l 141 Lines 4418 Bytes #999 (0) @ WW
BID : 8748-ZL3AI
Read: GUEST
Subj: [APRSSIG] Vol 27 #10, 1/1
Path: DB0FHN<DB0RGB<OK0PPL<DB0RES<ON0AR<ZL2BAU
Sent: 060912/2343Z @:ZL2BAU.#87.NZL.OC #:3788 [Waimate] $:8748-ZL3AI
From: ZL3AI@ZL2BAU.#87.NZL.OC
To : APRDIG@WW
Today's Topics:
1. GPS ? (Jeff Kelly)
2. Re: GPS Display of D700 stations (kb2scs_at_optonline.net)
3. Re: GPS Display of D700 stations (desloan_at_earthlink.net)
4. Re: Packet Node on 144.390 ? (Geoffrey Dick)
5. RE: Packet Node on 144.390 ? (Robert Bruninga)
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Message: 1
Date: Sat, 09 Sep 2006 13:34:12 -0400
From: "Jeff Kelly" <jkelly_at_bellatlantic.net>
Subject: [aprssig] GPS ?
Not sure if this any good but might help some folks.
http://www.geeks.com/details.asp?invtid=UT-41&cat=CON
Jeff
------------------------------
Message: 2
Date: Sat, 09 Sep 2006 22:22:08 -0400
From: kb2scs_at_optonline.net
Subject: Re: [aprssig] GPS Display of D700 stations
Hi Bob
My very old Garmin 45
On 8 Sep 2006 at 16:44, Robert Bruninga wrote:
>] Does anyone have a GPS connected to their D7 or D700
>] that does not capture and display the positions of
>] stations heard by the radio?
>
>In otherwords what NMEA GPS's do not accept the $GPWPL sentence
>That the D7 and D700 use to send positions to the GPS for
>display?
>
>Thanks
>Bob, Wb4APR
Let us hope we never witness the "Silence Of The Hams"
73 DE John KB2SCS
E-Mail: kb2scs_at_arrl.net
APRS-SCS http://www.tapr.org/~kb2scs
Web Page: http://www.qsl.net/kb2scs
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Message: 3
Date: Sat, 9 Sep 2006 22:33:26 -0400 (GMT-04:00)
From: desloan_at_earthlink.net
Subject: Re: [aprssig] GPS Display of D700 stations
Hi Bob,
I'm like John. I use a Garmin 45XL.
73
Dave N0EOP
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Message: 4
Date: Sun, 10 Sep 2006 08:07:23 -0400 (EDT)
From: wa4ikq_at_nevets.oau.org (Geoffrey Dick)
Subject: Re: [aprssig] Packet Node on 144.390 ?
Subject: Re: [aprssig] Packet Node on 144.390 ?
William McKeehan, KI4HDU wrote:
>I'm really looking for reasons to give someone to NOT put a packet
>node (BBS or just PBBS) on 144.39.
This largest reason I can think of is that packet bulletin board traffic
would block time-sensitive APRS information. Position and weather fall in
this category. Unconnected APRS packets are less than a second long, and
are not retransmitted. If the channel is busy, an APRS station will delay
to a set interval for fresh position or weather information. If the
channel is busy, then time-sensitive information is permanently lost.
Each transmission is unique for those who can receive them, and each APRS
packet burst is separated by minute to several minutes to allow others to
share the channel. With DCD taking precedence, Connected Packet will
impede others from sharing the channel.
Simply put, are speaking of two AX25 packet operating modes competing on a
single frequency:
connected-long-burst verses unconnected-short burst
Two connected Packet stations, transmitting, confirming, and retransmitting
will tie up the frequency for several minutes, preventing a multitude of
short-burst APRS stations from sharing the channel. This is not a good
plan for a shared frequency of 10 to 250 active stations in an ALOHA
circle.
Kind regards,
Geoffrey Dick, wa4ikq
Winter Park, FL
------------------------------
Message: 5
Date: Sun, 10 Sep 2006 11:49:42 -0400
From: "Robert Bruninga" <bruninga_at_usna.edu>
Subject: RE: [aprssig] Packet Node on 144.390 ?
I am all for BBS's and other conventional packet systems, but there is no
need for them on 144.39. Put them on a dedicated frequency (maybe 145.01)
and then make sure there are some 145.01 digis on the air too. Then one
can download from the BBS without QRM from APRS and APRS can operate
without QRM from the BBS.
The two modes are totally different. There is no reason whatsoever to have
them on the same frequency when a simple button push will QSY any radio for
optinum use on either.
BUT, be sure and have a BEACON on the APRS frquency (DIRECT ONLY in the
DIRECT area of the BBS) that shows the BBS on the map for those that might
need it. An object placed in the LT of a local digi would do that nicely.
The object would be the BBS ICON and the object text would be something
like. "145.01 MHz AARC BBS. Join us" This would show up nicely on the D7
and D700 displays.
De Wb4APR, Bob
------------------------------
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End of aprssig Digest, Vol 27, Issue 10
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