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ZL3AI > APRDIG 23.03.07 09:03l 277 Lines 9874 Bytes #999 (0) @ WW
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To : APRDIG@WW
Today's Topics:
1. Re: Balloon Paths again... (Bob Bruninga )
2. Re: mobile antenna for D7? (Greg D.)
3. RE: Road Trip - Lessons Learned ('Scott Miller')
4. Re: Road Trip - Lessons Learned (Stephen H. Smith)
5. Re: Re: Road Trip - Lessons Learned (Earl Needham)
6. RE: Re: Road Trip - Lessons Learned ('Scott Miller')
7. Re: Does anyone have a fix for the 70cm tone encoder problem on the
TH-7ag? (Al Wolfe)
8. Re: D710A ports - was Re: D700 bugs (Tapio Sokura)
9. Re: Road Trip - Lessons Learned (Joel Maslak)
10. The "portable" problem (Joel Maslak)
11. Re: Re: Does anyone have a fix for the 70cm tone encoder problem on the
TH-7ag? (Thomas t)
12. Re: Re: Does anyone have a fix for the 70cm tone encoder problem on the
TH-7ag? (Stephen H. Smith)
13. RE: The "portable" problem ('Scott Miller')
14. D7's,D700's and TinyTrak (Alex Carver)
15. Re: Re: Does anyone have a fix for the 70cm tone encoder problem on the
TH-7ag? (Thomas t)
----------------------------------------------------------------------
Message: 1
Date: Sun, 18 Mar 2007 14:45:49 -0400 (EDT)
From: "Bob Bruninga " <bruninga_at_usna.edu>
Subject: Re: [aprssig] Balloon Paths again...
>The Open Tracker in this balloon was set to switch
>to WIDE2-2 above 1000 meters altitude. The GPS
>failed, however, shortly after flight and so the
>Open Tracker never switched to the other path.
Ah, that is a perfect plan. Thanks.
>Stuff happens, ya know... :)
Yep, sorry. Didnt mean to complain. Keep up the great and exciting work!
Bob
Wb4APR
------------------------------
Message: 2
Date: Sun, 18 Mar 2007 12:05:13 -0700
From: "Greg D." <ko6th_greg_at_hotmail.com>
Subject: Re: [aprssig] mobile antenna for D7?
I also have a dual-band glass mount (Larsen 2/70) at the bottom of the
glass area on a hatchback type car (Acura Integra). It works well with my
dual-band mobile rig, but I do notice that the radiation pattern is not
circular. There is a definite preference to the back of the car. This is
likely caused either by the better ground plane to the back, or the fact
that it is shooting through the bulk of the car towards the front. But,
with garage heights as they are, there is no alternative, and any antenna
is far far better than none.
73s,
Greg KO6TH
----Original Message Follows----
>From: w2pi_at_optonline.net
>Reply-To: TAPR APRS Mailing List <aprssig_at_lists.tapr.org>
>To: TAPR APRS Mailing List <aprssig_at_lists.tapr.org>
>Subject: Re: [aprssig] mobile antenna for D7?
>Date: Wed, 14 Mar 2007 19:16:00 +0000 (GMT)
>
>I use a glass-mount dual band antenna with good success. It's actually
>mounted near the bottom of the window, to keep the top of the antenna below
>the 6'4" height of the garage I park in at work.
>
>Paul, W2PI (-7)
>
>----- Original Message -----
>From: Chris Kantarjiev
>Date: Wednesday, March 14, 2007 2:12 pm
>Subject: [aprssig] mobile antenna for D7?
>To: aprssig_at_lists.tapr.org
>
>>I'll ask this on the D7 list as well, but I think I'll get a more
>>useful response here.
>>
>>I'm revisiting my antenna choice for my vehicles. I've been
>>using a
>>couple of different mag mount antennas which are very flexible. That's
>>nice from a stealth point of view (they're pretty much invisible),
>>but the flex causes enough frequency shift that the D7 doesn't
>>decode most packets while in motion.
>>
>>I'm giving up on mag mounts, and will probably use a Diamond K600
>>trunk lid mount. The question, then, is what antenna to attach
>>to it.
>>
>>On another vehicle, I'm probably stuck with a through-glass antenna,
>>though I'm not sure of that yet.
>>
>>I'd really like to hear from folks that have had good luck with
>>a mobile D7.
>>
>>Thanks!
>>
>>73 de chris K6DBG
------------------------------
Message: 3
Date: Sun, 18 Mar 2007 13:15:45 -0700
From: "'Scott Miller'" <scott_at_opentrac.org>
Subject: RE: [aprssig] Road Trip - Lessons Learned
>Portability of the tracker is nice, but not nearly as important as
>robustness and difficulty for accidental reconfigurations. I might
This is a very good point. I sent a DR-135 (with Tracker2) along with a
friend on a cross-country trip. I made sure to set the keypad lock and had
no trouble with it. Though for some reason, my old Alinco DJ-F1T will
occasionally move 5 kHz off frequency when you turn it on, despite the
f-lock being enabled.
>I did 1 minute beacons for the "dumb" vehicle. I am not sorry about
>that at all. Even one minute at 70 MPH is quite some distance.
This is an application where Bob's proportional pathing scheme would be
good. You can get rapid updates direct, and occasional WIDE beacons for
longer range.
>We also used FRS between the vehicles. That didn't work nearly as
>well - after more than 1/4 mile or so at the most, we lost
>communication that way.
FRS has always disappointed me for vehicle to vehicle communications. It
can't compete even with a 5-watt 2-meter HT with a cheap 1/4 wave magmount.
Scott
N1VG
------------------------------
Message: 4
Date: Sun, 18 Mar 2007 15:34:12 -0700
From: "Stephen H. Smith" <wa8lmf2_at_aol.com>
Subject: [aprssig] Re: Road Trip - Lessons Learned
scott_at_opentrac.org wrote:
>FRS has always disappointed me for vehicle to vehicle communications. It
>can't compete even with a 5-watt 2-meter HT with a cheap 1/4 wave magmount.
Why would you expect one radio with an antenna inside the vehicle to be
remotely competitive with a second one with 10 time the power output with
an external antenna inside the car? Of course, you could always try one
of those the FRS radios where the radio and antenna are in a magmount box
on the roof with an external mic inside the car.
------------------------------
Message: 5
Date: Sun, 18 Mar 2007 17:31:06 -0600
From: Earl Needham <needhame1_at_plateautel.net>
Subject: Re: [aprssig] Re: Road Trip - Lessons Learned
At 04:34 PM 3/18/2007, Stephen H. Smith wrote:
>Why would you expect one radio with an antenna inside the vehicle to
>be remotely competitive with a second one with 10 time the power
>output with an external antenna inside the car? Of course, you
>could always try one of those the FRS radios where the radio and
>antenna are in a magmount box on the roof with an external mic inside the car.
I have one of those and it beats the daylights of the HT's.
Earl
KD5XB -- Earl Needham
Clovis, New Mexico DM84jk
http://groups.yahoo.com/group/cw_bugs
------------------------------
Message: 6
Date: Sun, 18 Mar 2007 17:38:23 -0700
From: "'Scott Miller'" <scott_at_opentrac.org>
Subject: RE: [aprssig] Re: Road Trip - Lessons Learned
>Why would you expect one radio with an antenna inside the vehicle to be
>remotely competitive with a second one with 10 time the power output
I don't, of course. There's no contest.
>with an external antenna inside the car? Of course, you could always
>try one of those the FRS radios where the radio and antenna are in a
>magmount box on the roof with an external mic inside the car.
Now that's an interesting way around the rules. Wonder what the FCC thinks
of that, and how long it'll take them to adapt the rules...
Scott
N1VG
------------------------------
Message: 7
Date: Sun, 18 Mar 2007 19:54:18 -0500
From: "Al Wolfe" <awolfe_at_Route24.net>
Subject: [aprssig] Re: Does anyone have a fix for the 70cm tone
encoder problem on the TH-7ag?
Thomas,
It sounds to me that there is no or inadequate high pass filtering
between the mike and the modulator. Low frequency mike audio is mixing with
the tone and confusing the repeater's tone decoder. Lowering interstage cap
values in the TH-7 might correct this.
Al, K9SI
------------------------------
Message: 8
Date: Mon, 19 Mar 2007 03:43:14 +0200
From: Tapio Sokura <oh2kku_at_iki.fi>
Subject: Re: [aprssig] D710A ports - was Re: D700 bugs
Chuck Gooden wrote:
>Could some one please provide more details on the infamous Green wire.
>I had my D700 apart and did not see any green wire.
Google for tm-d700 green wire, for me the first link went here:
http://www.radiomods.co.nz/kenwood/kenwoodtmd700.html
If your tm-d700 doesn't have the green wire visible, then maybe it was
already cut for you, if you have a second hand rig. You really can't
miss the wire on the underside of the radio unit, if it's intact.
Tapio
------------------------------
Message: 9
Date: Sun, 18 Mar 2007 21:21:50 -0600
From: Joel Maslak <jmaslak-aprs_at_antelope.net>
Subject: Re: [aprssig] Road Trip - Lessons Learned
On Mar 18, 2007, at 2:15 PM, Scott Miller wrote:
>>I did 1 minute beacons for the "dumb" vehicle. I am not sorry about
>>that at all. Even one minute at 70 MPH is quite some distance.
>
>This is an application where Bob's proportional pathing scheme would be
>good. You can get rapid updates direct, and occasional WIDE beacons for
>longer range.
Yes, I thought the same thing. Unfortunately Kenwood doesn't let you do
that. Too bad they don't give a good interface to the radio/TNC when the
thing is in APRS mode, as this would be the sort of thing that is trivial
if there was an interface (it would also be trivial to extract waypoints
properly into some of the proprietary formats such as Garmin).
>>We also used FRS between the vehicles. That didn't work nearly as
>>well - after more than 1/4 mile or so at the most, we lost
>>communication that way.
>
>FRS has always disappointed me for vehicle to vehicle communications. It
>can't compete even with a 5-watt 2-meter HT with a cheap 1/4 wave magmount.
Agreed, but for $7 and no license, you can't really beat it right now (I
got the radios out of a bargain bin at Wal-Mart - they are garbage, but I
don't care if the unlicensed user runs one over with their car either).
But yes I would have had second thoughts if I didn't also have a cell
phone!
------------------------------
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