| |
ZL3AI > APRDIG 20.01.04 16:05l 266 Lines 9304 Bytes #999 (0) @ WW
BID : 2690-ZL3AI
Read: GUEST
Subj: TAPR Digest, Jan 18, 4/5
Path: DB0FHN<DB0RGB<OK0PPL<DB0RES<ON0AR<IK1ZNW<ZL2TZE<ZL3VML
Sent: 040120/1302Z @:ZL3VML.#80.NZL.OC #:17195 [Chch-NZ] FBB7.00i $:2690-ZL3AI
From: ZL3AI@ZL3VML.#80.NZL.OC
To : APRDIG@WW
Subject: RE: PCsat Endangered
From: Brian D Heaton <bdheaton@c4i2.com>
Date: Sun, 18 Jan 2004 17:51:38 -0500
X-Message-Number: 24
Scott,
It can also be important in the car. I've wired up trackers (TT-IIs) that
used the second personality as the operating mode when the car is on
(accessory power lead to relay for grounding the pin). When the car is off
the relay drops out and the transmit rate is greatly reduced (1.5-2mins
when on/moving, 30-45mins when off) in what would normally be the "primary"
mode.
This all works great until you park the car at the airport and head out for
a 2-week trip and forget to turn the system off. (DOH!!!). What you
propose would be perfect for this. I'm guessing you would intend for it to
operate as an LCD (low voltage disconnect) to shut things down in the case
of low bus voltage.
I'll be doing the tracker install in the XYLs car next weekend with a TT3.
I'll likely do it this way, but use the control pin output to only power up
the GPS/radio a few minutes before the TX time in the slow transmit mode.
THX/BDH
----------------------------------------------------------------------
Subject: RE: Attended vs Unattended
From: "Bill Diaz" <william.diaz@comcast.net>
Date: Sun, 18 Jan 2004 18:10:40 -0600
X-Message-Number: 25
Bob,
I don't think a change to an existing APRS construct could be considered
backwards compatible. In particular, a change to the formatting of
location information should be avoided, IMO.
If there is truly a need for sending new information, we should consider
adding something to the comment field rather than modifying the existing
location fields. This would be backwards compatible since the Spec permits
almost anything in this field. Highly unlikely that ANY software would
break unless there was a conflict with an existing comment field construct.
Bill KC9XG
----------------------------------------------------------------------
Subject: RE: PCsat Endangered
From: Bob Bruninga <bruninga@usna.edu>
Date: Sun, 18 Jan 2004 19:34:05 -0500 (EST)
X-Message-Number: 26
On Sun, 18 Jan 2004, Scott Miller wrote:
>battery voltage monitoring circuit in my tracker. What I've come up
>with so far is just a two resistor voltage divider, with a tap going to
>a spare A/D input....... Is this the accepted way to do such a thing, or
Yes, and in all my projects I use a 10k/2.4k voltage divider and then the
digital count turns out to equal the voltage in tenths of a volt. In
other words, a digital count of 138 means 13.8 volts.
The exact ratio is not exactly 10k/2.4k but close enough using those
standard resistors. I think it is within 0.2 volts or so. And it is good
up to 25.5 volts... You can parallel some megohom resistors to tweak it
exactly if you like...
This makes it possible to watch the telemetry from PCsat for example
without having a decoder program... (at least for the battery voltage
terms)...
de Wb4APR, Bob
----------------------------------------------------------------------
Subject: Re: Attended vs Unattended
From: Bob Bruninga <bruninga@usna.edu>
Date: Sun, 18 Jan 2004 19:43:44 -0500 (EST)
X-Message-Number: 27
On Sun, 18 Jan 2004, Steve Dimse wrote:
>Personally, I am against this, but I don't feel strongly enough to mount
>an argument on the proposal itself. My position is this is not the minor
>change Bob sells it as, and it really needs to be considered
>carefully...
Yes, agreed. it all depends on compatibility. Although N,S,E,W were
required, my code always accepted lower case, beacuse back in the early
days (and still now), there were always digi owners that mistakenly
entered lower case for those characters, and I decided that accepting both
cases was prudent.
My big concern is the Kenwoods. If they dont accept it, then forget the
idea. (Mine is still off with my wife... who took my car today...)
So I cant test it...
de WB4APR, Bob
----------------------------------------------------------------------
Subject: Need Character for RELAY Digi BTEXT
From: "Rich Garcia" <k4gps@bellsouth.net>
Date: Sun, 18 Jan 2004 20:03:45 -0500
X-Message-Number: 28
Can anyone point me in the right direction for the character that represents
a STAR (Digi) with a R in it for RELAY? I am getting a TNC ready and need to
get the BTEXT set up.
Thanks,
Rich
----------------------------------------------------------------------
Subject: Re: Need Character for RELAY Digi BTEXT
From: Robbie WA9INF <mwrobertson@comcast.net>
Date: Sun, 18 Jan 2004 19:11:57 -0600
X-Message-Number: 29
Place an R after the N in Lat, and a # after the W in Lon
Robbie (I think), ;-)
----------------------------------------------------------------------
Subject: Re: Need Character for RELAY Digi BTEXT
From: "Spider" <spider@rivcom.net>
Date: Sun, 18 Jan 2004 18:45:04 -0700
X-Message-Number: 30
>Can anyone point me in the right direction for the character that represents
>a STAR (Digi) with a R in it for RELAY? I am getting a TNC ready and need to
>get the BTEXT set up.
>
>Thanks,
>Rich
Hey Rich!
A 'star' Digi can not have an O'ly.
Jim, WA6OFT
----------------------------------------------------------------------
Subject: Re: Attended vs Unattended
From: Bob Bruninga <bruninga@usna.edu>
Date: Sun, 18 Jan 2004 21:11:09 -0500 (EST)
X-Message-Number: 31
I tested the D700 and it accepts either case of N/S. So the reports so
far on the availabiility of this bit are:
1) Accepts U/L case for N/S: APRSdos, Kenwoods
2) Does not accept and would impact present users: ... tbd
3) Other: FINDU does not accept it. But being a single point,
could be changed if determined to be in best interest of community.
Again, not forcing the issue, just gathering data on the availability of
this bit for backwards compatibility... So if you can test your favorite
software, let us know.
Test would be !4044.44n/10555.55w-Test
SPEC says: !4044.44N/10555.55W-Test
but does your software decode it?
de Wb4APR, Bob
----------------------------------------------------------------------
Subject: Re: Attended vs Unattended
From: Bob Bruninga <bruninga@usna.edu>
Date: Sun, 18 Jan 2004 21:12:29 -0500 (EST)
X-Message-Number: 32
On Sun, 18 Jan 2004, Brian D Heaton wrote:
>I think you're attempting a technical solution to what is really a
>variable TTP (Tactics Techniques and Procedures) issue.
Its not a proposed solution to anything. It is a bit of data.
>I've often got an APRS client running in the shack while I do other
>things. If something of interest happens I get an audio alarm. For
>normal operations this is fine. I don't spend all day staring at the
>screen or occasionally typing/mousing.
Nor should you.
>If, on the other hand, I was actively involved in an event/incident
>utilizing APRS I would be paying much more attention to the display.
And that is a "bit" of information that could be of value to others...
>Even if its active on the display I still may not touch the KB/mouse for
>quite a while. This doesn't mean I'm not active, it just means that
>I've got the display how I want it.
And there is no problem with that. This bit of information is not used
as some big-brother discriminator.. it is only a bit of info..
>The solution you propose would break the packet validation code in
>many clients for little real gain. If there is a problem on some
>tactical nets with net participants walking away from the system and not
>performing their defined function then you have an issue with net
>participants following established procedures.
Again, it is not a proposed solution to anything, and there is no problem
I am trying to fix. I'm just curious when I sit at my APRS screen and
want to engage in some APRS activity, its nice to know who else is sitting
at their screen and actively doing something too.
Bob, WB4APR
----------------------------------------------------------------------
Subject: Re: Need Character for RELAY Digi BTEXT
From: Bob Bruninga <bruninga@usna.edu>
Date: Sun, 18 Jan 2004 21:13:27 -0500 (EST)
X-Message-Number: 33
On Sun, 18 Jan 2004, Rich Garcia wrote:
>Can anyone point me in the right direction for the character that represents
>a STAR (Digi) with a R in it for RELAY? I am getting a TNC ready and need to
>get the BTEXT set up.
Use the # symbol and put the "R" in place of the usual "/" lat/long
separator...
de WB4APR, Bob
----------------------------------------------------------------------
Subject: Re: Attended vs Unattended
From: "Richard Amirault" <ramirault@erols.com>
Date: Sun, 18 Jan 2004 21:44:04 -0500
X-Message-Number: 34
----- Original Message -----
From: "Bob Bruninga" <bruninga@usna.edu>
Subject: [aprssig] Re: Attended vs Unattended
(snip)
>Again, it is not a proposed solution to anything, and there is no problem
>I am trying to fix. I'm just curious when I sit at my APRS screen and
>want to engage in some APRS activity, its nice to know who else is sitting
>at their screen and actively doing something too.
(snip)
If thats the case then I,for one, am certainly against such a change.
Richard Amirault N1JDU Boston,
MA, USA
www.erols.com/ramirault "Go Fly A Kite"
----------------------------------------------------------------------
Read previous mail | Read next mail
| |
