[OZAPRS] Balloon

Fri Sep 8 23:05:29 EST 2006

Hi Chris,

There are 2 things you can do to get D700 data from the radio in APRS
mode.
Here is a copy of the suggestions below from the APRSSig.

Good luck with the balloon launch, there are a lot of people interested in
it.

Cheers
Richard
VK3JFK

>From agcme2002 at yahoo.com  Wed Aug 16 12:30:02 2006
From: agcme2002 at yahoo.com (Alex Carver)
Date: Wed Aug 16 12:30:39 2006
Subject: [aprssig] D700 plus mapping
In-Reply-To: <E1GDOkf-0004UV-58 at giskard.tapr.org>
Message-ID: <20060816173002.70416.qmail at web50408.mail.yahoo.com>

It would depend entirely on the mapping software but
if it understands GPWPL sentences, there's no need for
external TNCs or splitting the GPS cable to get
mapping to work while the D700 is in APRS mode.

When in APRS mode, the serial port is still active.  
It will spit out each station heard as a NEMA GPWPL
sentence up to the GPS but also back towards a
computer.  This is as long as you've done two things. 
One, enable the GPS on the unit including uploading
received posits.  Two, you need to be sure to issue
the "AI 1" (alpha india one) command to the D700
through its serial port.  This is the "Auto
Information" mode of the D700.  It will echo back
every command you send and anything the radio is
doing.  So if the GPS sends a position sentence to the
D700, that will appear on the D700's serial port if AI
is turned on.  If a posit is received, the D700 will
split it and send GPWPLs to both the GPS port and the
serial port.

Alex KF4LVZ

Message: 16
Date: Wed, 16 Aug 2006 06:09:37 -0500
From: Jason Winningham <jdw at eng.uah.edu>
Subject: Re: [aprssig] APRS wish list
To: TAPR APRS Mailing List <aprssig at lists.tapr.org>
Message-ID:
<200C71C8-B9AA-4E4A-96B5-27D0099036F3 at eng.uah.edu>
Content-Type: text/plain; charset=US-ASCII; delsp=yes;
format=flowed

On Aug 15, 2006, at 9:12 PM, Bob Burns K4RXR wrote:

> It'd be great if there was a way to let the D700
continue to run in  
> APRS mode and then have a mapping program that pulls
the positions  
> from the D700. I haven't seen anything like that out
there.

Let the D700 operate APRS as normal (TNC in APRS mode)
and use an  
external TNC, a packet decoder, or a sound card
interface to decode  
the audio output from the D700 for use by the mapping
program.  This  
does not allow the program to transmit, but works
quite well otherwise.

I use this frequently on balloon chases; the data
stream feeding the  
laptop for logging, mapping, ascent rate/descent rate
calculation,  
etc is vital, but I still like to have the data
displayed on the D700  
as I'm navigating to the LZ.

-Jason
kg4wsv

> -----Original Message-----
> From: ozaprs-bounces at aprs.net.au [mailto:ozaprs-bounces at aprs.net.au] On
> Behalf Of Craig Turner
> Sent: Thursday, 7 September 2006 7:19 PM
> To: vk4tec at tech-software.net; VK / ZL APRS Users
> Subject: [OZAPRS] Balloon
> 
> Hi Ladies and Gents,
> 
> A while ago I discussed a friend and I launching a balloon and tracking
> it via APRS.
> 
> Well, work and weather have combined to allow us to set a launch date of
> Sun 11 Sep. The exact time is yet to be determined, but it will be early
> Sunday morning.
> 
> The launch site is Murrumbateman football oval. I've created an APRS
> Object called ICLaunch
> 
> The Balloon will be VK1HCT-11 and the tracking station will be VK1HCT-7
> 
> I will also have a Tinytrack with VK1HCT-9 in case I have to get out and
> hike after the balloon.
> 
> I've just lashed out and purchase an Kenwood TM D700, and will be using
> that connected to a lap top running UI-View. I will be listening to
> 146.500 on Channel B (or a local repeater)
> 
> I will also be listening on HF, at this stage I propose 21.195 USB, the
> intent being here, if anyone happens interested enough to be watching at
> home, they could let us know if they are picking up balloon, which may
> even be of assistance if we loose track.
> 
> On Saturday I'll send out a BLN giving further details, and a BLN on
> successful (or otherwise) launch.
> 
> Quick question on the TM D700,  I would like to have the Data channel
> receiving APRS as well as feeding it to the laptop, this way my co
> driver can watch the lap top and navigate, and I can keep and eye on the
> signals on the kenwood, but at the moment it appears that to connect
> UI-View to the Kenwood, the radio has to be in packet mode, not APRS. Is
> it possible to have APRS running on the radio as well as feeding the
> info to the lap top?
> 
> Regards
> Craig
> VK1HCT
> _______________________________________________
> Ozaprs mailing list
> Ozaprs at aprs.net.au
> http://aprs.net.au/mailman/listinfo/ozaprs

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