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ZL3AI > APRDIG 19.02.07 08:43l 176 Lines 6882 Bytes #999 (0) @ WW
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Subj: [APRSSIG] Vol 32 #18, 2/2
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From: ZL3AI@ZL2BAU.#79.NZL.OC
To : APRDIG@WW
Message: 10
Date: Sat, 17 Feb 2007 09:03:52 -0600
From: "John Habbinga" <kc5zrq_at_gmail.com>
Subject: Re: [aprssig] Consulting
Steve, I don't know where you'd find a "Pro" to consult about APRS. Are
they wanting to use APRS so that they can increase their interoperability
with ham radio operators, or are they wanting to use the AVL features of
APRS to track their own assets for improved law enforcement activities?
If that is the case, then most APRS client software and software like
javAPRSSrvr, is either not available for commercial use or requires a
licensing fee.
A small police department in my area has started using APRS, but each
officer is becoming a ham radio operator and its primary use is to include
ham radio in their emergency operations plan.
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Message: 11
Date: Sat, 17 Feb 2007 10:08:52 -0500
From: "Robert Bruninga" <bruninga_at_usna.edu>
Subject: RE: [aprssig] Sky Ccommand...
>Didn't the FCC rule SkyCommand illegal in the US?
Along with the recent FCC rules eliminating CW, they also approved Sky
Command II. (I think). The problem is finding a 2m frequency on which to
link the audio... Normally you keep the 2m link at 5 watts or so to keep it
local and from overheating your finals.
Bob, WB4APR
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Message: 12
Date: Sat, 17 Feb 2007 09:23:22 -0600
From: "John Habbinga" <kc5zrq_at_gmail.com>
Subject: Re: [aprssig] Sky Ccommand...
I believe that the rules were recently changed. I notice that 97.201(b)
says, "An auxiliary station may only transmit on the 2 m and shorter
wavelength bands, except the 144.0-144.5 MHz, 145.8-146.0 MHz..." So
operation above 146 MHz should be legal.
I think that the rule changes are described in the December 2006 issue of
QST magazine, but I can't find my issue right now, so I'm not certain.
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Message: 13
Date: Sat, 17 Feb 2007 10:33:26 -0500
From: Steve Dimse <steve_at_dimse.com>
Subject: Re: [aprssig] Consulting
On Feb 17, 2007, at 10:03 AM, John Habbinga wrote:
>Steve, I don't know where you'd find a "Pro" to consult about APRS.
Actually they are a number of APRS users that do have real AVL consulting
businesses, turns out one lived about 50 miles from this city.
>Are they wanting to use APRS so that they can increase their
>interoperability with ham radio operators, or are they wanting to
>use the AVL features of APRS to track their own assets for
>improved law enforcement activities?
The latter.
>If that is the case, then most APRS client software and software
>like javAPRSSrvr, is either not available for commercial use or
>requires a licensing fee.
At least one hub and two clients are unencumbered by commercial
restrictions, but regardless, commercial users are generally willing to pay
reasonable fees. This is really not a hurdle.
Steve K4HG
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Message: 14
Date: Sat, 17 Feb 2007 11:58:39 -0500
From: "Robert Bruninga" <bruninga_at_usna.edu>
Subject: RE: [aprssig] Sky Ccommand...
New learnings about SKYCOMMAND: Neat stuff!
I have a TS-2000 radio at work on HF set to skycomand TRANSPORTER mode.
I can have my HT and my D700 and a Laptop running APRSdos all acting as
COMMANDERS and all display on their screen's the same HF radio info no
matter who is controlling. I can even use DUMB terminal on the APRS packet
station and control the HF radio too, and my COMMANDER radios are all
updated to the new HF radio settings. The packets are simply UI packets
sent to the TOCALL of SC2.
Thus we can have GROUP operations of a REMOTE HF transceiver and all can
see on the front panels of their radios what is going on! Neat! And
anyone can listen to the VHF link to hear what we are all hearing.
Do here is where we stand (and I have to go visit the inlaws for the next 3
days so I cnnot play anymore)...
>1) does it ever time out?
>2) What does #1 ON/OFF command do? I saw no change.
>3) Can others share my rig [Yes! All use call of CMDR!}
>4) Can others use UHF as a voice coord channel? [YES, change PL!]
>5) Can the GROUP see the HF freq while I am commanding. [yes!]
>6) what is safe TS-2000 VHF 100% TX power level?
>7) How to remotely band change? Just have multiple memories?
>8) how can you edit out an extra character in a 4 or 5
>character call? There is no SPACE character and no DEL
>button that I can find.
So while station A is controlling the radio, anyone with the SKYCOMMAND PL
set and keys his UHF, will go out on HF, but all the rest of the group can
chat back and forth on the same UHF channel as a coordinationg backchannel
without keying the HF rig if they just set a different skycommand PL. Thus
everyone on the local COMMANDERS VHF/UHF net can still do everytihg with
their D7 and D700 mobile withouht needing ANY kluges.
Oh, I also found that if I set the TXD from 500ms down to 150 ms in all the
radio's TNC's before bringing up sky command, that the packets are MUCH
shorter. Almost half as long.
Oh, and do NOT have CTCSS set (APRS voice alert) before you bring up
SKYCOMMAD, or you wont ever hear anything on the VHF side. Apparently
SKYCOMAND does not ovveride your previous setting of CTCSS if left on.
Wow, now from my D700 front panel, I can:
1) Do all of APRS (positions, messages, Igates, FINDU, etc)
2) Send and receive Email (via WU2Z engine)
3) Send and receive WinLINNK email (APRS-link system)
4) See ALERTS to local VOICE repeaters while traveling
5) See alerts to local nets and hamfest objects
6) See traffic info from APRS-TRAFFIC alerts
7) Remotely OPERATE any public SKYCOMMAND RADIO!
By using the APRS UHF channel of 445.925 (if avaliable in your area) and
setting a TRANSPORTER callsign of TPTR and mobile skycommand calls of CMDR,
then any and all mobiles in the area can see/command any local SKYCOMMND
systems. We willuse PL of 67 to CONTROL the HF rig and PL100 for chatting
on the UHF backchannel. This way, all an APRS mobile has to do to see if
anything is going on on SKYcommand is simply QSY his 144.39 Voice Alert
channel to 445.925 and call out. PL is arelady set for backchannel voice.
And if anyone is listening, they will hear it. Etc...
Ill put this all on a web page soon. For now, here is my not-yet-updated
SKYCOMMAND plan in Annaplois Marlyand:
\\coyote\bruninga\web-docs\USNAremoteHF.html
This is a GREAT use for that $2000 radio when you aren't using your
TS-2000...
What I want is somone in my area to make up a list of HF channels that a
mobile might be niterested in listening too. Since the D7 or D700 can call
up any channel by MEMORY, then it is easy to check in on all the HF nets,
etc...
Bob, WB4APR
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