Date   

Re: Got Helium?

paul.verhage@...
 

I have carried one tank in my car, I should be able to get at least two in there.
It might take me a few trips but if no one closer, I'll do it. They will be okay
at Johnson Near Space Center right?
The center locks, so the tanks will be safe.

Paul


Re: Got Helium?

Don Pfister <ka0jlf@...>
 

I have carried one tank in my car, I should be able to get at least two in there.
It might take me a few trips but if no one closer, I'll do it. They will be okay
at Johnson Near Space Center right?

paul.verhage@boiseschools.org wrote:

Paul, I'll take one tank of helium. I could drive out to Manhattan and help
(manpower) but my car too is small. What about delivery? Does the gas place
charge for delivery or is it going to be delivered to the school?
Linweld won't deliver. I have to carry the tanks out myself.

Paul


July 4th weekend

Keith Sproul <ksproul@...>
 

Can someone tell me where and when the events are for the July 5th-6th
weekend? I am making my travel plans etc..

Keith Sproul


--
Keith Sproul Ham Radio: WU2Z
Student Housing Network Coordinator 732 445-3695 Work
Rutgers University Computing Services 732 445-2968 Fax
mailto://ksproul@noc.rutgers.edu


Re: Got Helium?

Michael L. Bogard <kd0fw@...>
 

If I could get a tank that would be great also. I will be driving my truck to the gpsl and might be able to help haul the tanks. I may not be able to get off work on Friday early so I might not get there till about 6:00 or 7:00pm. Keep in touch and thanks de kd0fw


Re: July 4th weekend

Mark Conner <n9xtn@...>
 

Hi Keith,

The symposium is scheduled for Friday, July 5th starting at 9am
and lasting most of the day. The launch will be Saturday the 6th
with a rain date of Sunday the 7th.

I believe both Manhattan and Topeka have limited air service, but
it's probably expensive. It's probably more cost-effective to
travel to Kansas City (MCI) and drive a rental car the 120 miles
(2 hrs) from the airport to Manhattan.

Your return date depends on how sure you want to be of seeing the
launches. If you go back Sunday afternoon, you could chase with
us on Saturday if we get off the ground, or if it ends up being
on Sunday you'd at least see the launch.

73 de Mark N9XTN

----- Original Message -----
From: "Keith Sproul" <ksproul@td.rutgers.edu>
To: <GPSL@yahoogroups.com>
Sent: Friday, May 31, 2002 21:24
Subject: [GPSL] July 4th weekend



Can someone tell me where and when the events are for the July
5th-6th
weekend? I am making my travel plans etc..

Keith Sproul


GPSL web site

Mark Conner <n9xtn@...>
 

Forgot to mention that the main GPSL 2002 web site is at:

http://users.crosspaths.net/~wallio/GPSL2002.html

73 de Mark N9XTN
------
Mark D. Conner
E-mail: n9xtn@arrl.net
Homepage: http://members.cox.net/mconner1
"Arrogance and stupidity, all in the same package.....how
efficient of you!" - Ambassador Londo Mollari, Babylon 5


Re: July 4th weekend

Keith Sproul <ksproul@...>
 

Thanks for the info..

The web site told me what I needed.. It is at K-State.. My father went
there.. My grandparents live in Clay Center.. I am going to fly to KC,
get a car, and go visit my grandparents for the 4th, then go to Manhattan
for the conf and launch.. Since it is close enough, I will stay with my
grandparents and save on the hotel bill. I know the area much better than
you would expect for someone from New Jersey....

Also, what is JNSC and where exactly is the launch from???

Keith

On Sat, 1 Jun 2002, Mark Conner wrote:

Hi Keith,

The symposium is scheduled for Friday, July 5th starting at 9am
and lasting most of the day. The launch will be Saturday the 6th
with a rain date of Sunday the 7th.

I believe both Manhattan and Topeka have limited air service, but
it's probably expensive. It's probably more cost-effective to
travel to Kansas City (MCI) and drive a rental car the 120 miles
(2 hrs) from the airport to Manhattan.

Your return date depends on how sure you want to be of seeing the
launches. If you go back Sunday afternoon, you could chase with
us on Saturday if we get off the ground, or if it ends up being
on Sunday you'd at least see the launch.

73 de Mark N9XTN

----- Original Message -----
From: "Keith Sproul" <ksproul@td.rutgers.edu>
To: <GPSL@yahoogroups.com>
Sent: Friday, May 31, 2002 21:24
Subject: [GPSL] July 4th weekend



Can someone tell me where and when the events are for the July
5th-6th
weekend? I am making my travel plans etc..

Keith Sproul




To unsubscribe from this group, send an email to:
GPSL-unsubscribe@yahoogroups.com



Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/


--
Keith Sproul Ham Radio: WU2Z
Student Housing Network Coordinator 732 445-3695 Work
Rutgers University Computing Services 732 445-2968 Fax
mailto://ksproul@noc.rutgers.edu


Re: July 4th weekend

Mark Conner <n9xtn@...>
 

The launch will be at the Johnson Near Space Center, which is
about 10 miles south of Manhattan. The main feature of the JNSC
is a large storage building where we can fill 4-6 balloons inside
out of the wind.

Take a look at the pictures linked from this site - there are
several taken at the launch site.
http://members.cox.net/mconner1/knsp.html

- Mark

----- Original Message -----
From: "Keith Sproul" <ksproul@td.rutgers.edu>
To: <GPSL@yahoogroups.com>
Sent: Saturday, June 01, 2002 11:21
Subject: Re: [GPSL] July 4th weekend



Thanks for the info..

The web site told me what I needed.. It is at K-State.. My
father went
there.. My grandparents live in Clay Center.. I am going to
fly to KC,
get a car, and go visit my grandparents for the 4th, then go to
Manhattan
for the conf and launch.. Since it is close enough, I will stay
with my
grandparents and save on the hotel bill. I know the area much
better than
you would expect for someone from New Jersey....

Also, what is JNSC and where exactly is the launch from???

Keith


On Sat, 1 Jun 2002, Mark Conner wrote:

Hi Keith,

The symposium is scheduled for Friday, July 5th starting at
9am
and lasting most of the day. The launch will be Saturday the
6th
with a rain date of Sunday the 7th.

I believe both Manhattan and Topeka have limited air service,
but
it's probably expensive. It's probably more cost-effective
to
travel to Kansas City (MCI) and drive a rental car the 120
miles
(2 hrs) from the airport to Manhattan.

Your return date depends on how sure you want to be of seeing
the
launches. If you go back Sunday afternoon, you could chase
with
us on Saturday if we get off the ground, or if it ends up
being
on Sunday you'd at least see the launch.

73 de Mark N9XTN

----- Original Message -----
From: "Keith Sproul" <ksproul@td.rutgers.edu>
To: <GPSL@yahoogroups.com>
Sent: Friday, May 31, 2002 21:24
Subject: [GPSL] July 4th weekend



Can someone tell me where and when the events are for the
July
5th-6th
weekend? I am making my travel plans etc..

Keith Sproul




To unsubscribe from this group, send an email to:
GPSL-unsubscribe@yahoogroups.com



Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/terms/


--
Keith Sproul Ham Radio: WU2Z
Student Housing Network Coordinator 732 445-3695 Work
Rutgers University Computing Services 732 445-2968 Fax
mailto://ksproul@noc.rutgers.edu


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Frequency coordination

Mark Conner <n9xtn@...>
 

Hi everybody,

It's been a busy few weeks, and it's not getting any better for
me. In addition to the GPSL, I have a design review for a
software project next week, we are doing some minor renovation,
painting, and installing new floor and carpet in the house in
June, and two weeks after the GPSL I'll be getting married.

I think we are gravitating towards the use of 144.34 MHz for
primary APRS use for all payloads that will support it. I have
been told that it's also used for FM simplex for ATV DX
coordination, but most balloon groups use it for non-.39 work.
ANSR uses 70cm for downlinks, so they'll be the exception.
Backup beacons can use 144.39 MHz if desired, keeping in mind
that you should keep the rate down (1x/minute or less) so we
don't hog the channel.

We have used 147.585 MHz for SSTV in the past in case anyone
plans to fly that mode. A simplex repeater can use 446.300 MHz
which appears to be pretty clear in this area.

I believe we have frequency information for ANSR, TVNSP, KD0FW,
and NSTAR, though not yet compiled in one place. I would like to
get info from EOSS, WB8ELK, HABITAT/SkyLab, and Traveler. I
don't think we have reps from Traveler and EOSS on the GPSL list,
so I'll see about getting them to come up on the net here. If
you've posted your info elsewhere, please copy it here to the
GPSL list so we have it archived. See
http://groups.yahoo.com/group/GPSL/files/ANSRFreqPlan.txt for an
example. You can either post it or upload it to the files area.

73 de Mark N9XTN
------
Mark D. Conner
E-mail: n9xtn@arrl.net
Homepage: http://members.cox.net/mconner1
"Arrogance and stupidity, all in the same package.....how
efficient of you!" - Ambassador Londo Mollari, Babylon 5


GPSL Logos

paul.verhage@...
 

Let me try again. This time the logo and saying are in Corel Draw.
Feel free to do with the logos as you wish, but make sure it's not
something embarassing. I plan to bring a t-shirt with the logos.

Paul


EOSS "Standard" Frequencies

lcerney <lcerney@...>
 

Hello all,

EOSS "standard" frequencies are:

Telemetry 144.34 MHz
Tracking Beacon 147.555 MHz
xBand Down 147.555 MHZ
Up 445.975 MHz
ATV 426.25 MHz
Simplex in field 146.58 MHz

I also suggest a back channel frequency for each group to keep
tactical chatter off the repeater. EOSS could use our xBand Up link
frequency of 445.975 simplex.

This is a preliminary listing. Many Freqs can be changed if needed.
I'm sure Mike, W5VSI, will have more to add when he gets on the list.

73.....
Larry K0ANI


Re: GPSL cancellation

Bill Brown
 

Sorry to hear about that Jack,

I was looking forward to seeing you again....guess I'll just have to make
the trip to hot hot dry dry Arizona from hot hot muggy muggy Alabama!!!

I'll try to send a balloon your way this Summer special delivery balloon
mail.

73s de Bill WB8ELK


Frequencies for WB8ELK Balloon for GPSL

Bill Brown
 

I am still thinking about the payload I'll be launching...scavenging parts
from a dozen past payloads sitting in my garage at the moment. Currently I
plan to fly an altitude record attempt with APRS GPS on 147.45 MHz
(alternates are 144.34, 144.36 or 144.39) and camera video on 434 MHz
ATV....I'll also have a 20 milliwatt 28.322 MHz CW transmitter as well for
tracking.

73s de Bill Brown WB8ELK


GPSL cancellation

aa0p <aa0p@...>
 

I am sorry, but an emergency reschedule at work has caused me to
cancel my particpation at GPSL 2002. As this project is of National
need, I will not be able to attend your fine symposium. I will
however, endeaver to get our ANSR video up to the EOSS team and I
hope it will tell our story here in dry, dry, dry, hot, hot, Arizona.
I will also write a tribute to Bill Brown from my early memories of
his projects and the inspriration he provided to us in Colorado and
that we still feel in Arizona. Sorry for the cancellation.

73 de AA0P


Re: GPSL cancellation

K. Mark Caviezel
 

Shucks, Jack, sorry to hear the news.

I had been thinking about lofting a low altitude
floater from Denver to Manhattan, but the critical
mass for that project just hasn't formed, and indeed I
will be out of the country July 5th and onwards.

If any of the GPSL participant groups want to try
their hand at a modest sized zero pressure
polyethelene floater, just let me know. I'd be happy
to provide a bag for the GPSL event. Check photos
from EOSS 55 mission archieves to see one of my home
built bags in action.

- KMC KC0JHQ

__________________________________________________
Do You Yahoo!?
Yahoo! - Official partner of 2002 FIFA World Cup
http://fifaworldcup.yahoo.com


Re: SiRF receivers

Ralph Wallio, W0RPK <wallio@...>
 

Michael,

My response is delayed because I have been on the road for several days.
Thank you for this good news. There are very few of us involved in amateur
high altitude ballooning with roughly 10 active programs nationwide at any
given time. Regardless, GPS receiver performance above 60kft is absolutely
necessary.

We do not have access to a GPS simulator so the only method we have to test
for high altitude performance is to fly a mission and find out. Typically
we fly a primary receiver we already understand while we test a secondary
receiver. Primary and secondary receiver NMEA output rides an Amateur Radio
telemetry downlink to ground stations either directly or via payload
processing.

I maintain a web page where we attempt to steer designers toward GPS
receivers we know will work at high altitudes (see
http://users.crosspaths.net/~wallio/gps60kft.html). I would like to add
your information to this list but we first need to fly a test mission.
Unfortunately all SIRF and partner, e.g., AXIOM, specification sheets I have
seen specify maximum altitude as 60,000ft (this includes all SIRF
specification sheets in your web pages).

Manifests for several flights in early July are already locked but we will
prepare for a test flight and advise you of results.

Regards, Ralph Wallio, W0RPK
wallio@crosspaths.net
http://members.crosspaths.net/wallio
Never use software to compensate for a poor hardware system

----- Original Message -----
From: "Michael Castle" <michael.castle@ntlworld.com>
To: <wallio@crosspaths.net>
Sent: Monday, May 27, 2002 17:16 PM
Subject: SiRF receivers


I work for SiRF and can confirm that all SiRFstar 1 and 2 receivers will
work over 60kft. Also SiRF receivers modules are very cheap now, and
have
some excellent low power modes which may be useful for ballooning.
Regards,
Michael Castle


Re: SiRF receivers

Bill Brown
 

Ralph,

I flew an Axiom Sandpiper model receiver using the SiRF chipset on a
mission in the Gulf of Mexico on our last Rockoon mission...it flew on the
launch platform gondola. Their engineer claimed it would work over 60k feet
just like the Motorola VP Oncore would...i.e. as long as you didn't exceed
the speed limit (somewhere over 600 knots or so), the altitude limit of 60k
would not be a problem. Some receivers will lock up at 60k feet regardless of
the speed travelled, it depends on the manufacturer. I know that the VP
Oncore works great, the Garmin 35 and (if specially modified, the Trimble See
Vee 6).

My experience was that although we were only travelling about 20 knots
groundspeed, the Axiom Sandpiper receiver completely locked up at 60k feet
and never came back up again during the rest of the flight. I haven't tried
any more flights with the Axiom units, although I may try an experiment using
the very tiny Swift model Axiom receiver that I have as a backup GPS to see
if it works above 60k.

73s de Bill WB8ELK


Re: SiRF receivers

Ralph Wallio, W0RPK <wallio@...>
 

Bill,

Use of SiRFStar chipsets above 60kft is being discussed because AXIOM
Sandpiper receivers are appearing on the inexpensive surplus market. I have
evaluated a pair of these receivers for terrestrial applications, e.g.,
APRS, and find documentation and PC software to be readily available.

Michael Castle has further contributed his knowledge that SiRF code will
allow receivers based on SiRFStar-II chipsets to work above 60kft when
velocity is <1000kts. However, the AXIOM Sandpiper receiver uses the
SiRFStar-I chipset which Michael had not yet completely investigated. Your
empirical evidence appears to definitively tell us that code in the
SiRFStar-I chipset limits performance to altitudes below 60kt regardless of
vehicle velocity and acceleration.

All models of AXIOM Swift receivers use SiRFStar-II chipsets so Michael's
contribution is valuable.

Please compile and forward detailed information required for an AXIOM
Sandpiper entry to http://users.crosspaths.net/~wallio/gps60kft.html and I
will add it to the RED list.

For comparison, this what I see when my Sandpiper receivers come up:

SiRF Baseline Version: 1.3.1DKIT144 Axiom Variant: k201AX
$
Build date: Nov 12 1999
$Build time: 14:42:07

TNX es 73 de Ralph Wallio, W0RPK
wallio@crosspaths.net
http://members.crosspaths.net/wallio
Results may not be reproducible

----- Original Message -----
From: <wb8elk@aol.com>
To: <GPSL@yahoogroups.com>
Sent: Friday, June 07, 2002 0:19 AM
Subject: Re: [GPSL] Re: SiRF receivers


Ralph,

I flew an Axiom Sandpiper model receiver using the SiRF chipset on a
mission in the Gulf of Mexico on our last Rockoon mission...it flew on the
launch platform gondola. Their engineer claimed it would work over 60k
feet
just like the Motorola VP Oncore would...i.e. as long as you didn't exceed
the speed limit (somewhere over 600 knots or so), the altitude limit of
60k
would not be a problem. Some receivers will lock up at 60k feet regardless
of
the speed travelled, it depends on the manufacturer. I know that the VP
Oncore works great, the Garmin 35 and (if specially modified, the Trimble
See
Vee 6).

My experience was that although we were only travelling about 20 knots
groundspeed, the Axiom Sandpiper receiver completely locked up at 60k feet
and never came back up again during the rest of the flight. I haven't
tried
any more flights with the Axiom units, although I may try an experiment
using
the very tiny Swift model Axiom receiver that I have as a backup GPS to
see
if it works above 60k.

73s de Bill WB8ELK


Frequency coordination page

Mark Conner <n9xtn@...>
 

I have uploaded a summary page to:
http://groups.yahoo.com/group/GPSL/files/gpsl_2002_freq_coordinat
ion.htm

If you can't get to the files area, try:
http://members.cox.net/n9xtn/gpsl_2002_freq_coordination.htm

Please take a look and let me know what to correct or add.

73 de Mark N9XTN
------
Mark D. Conner
E-mail: n9xtn@arrl.net
Homepage: http://members.cox.net/mconner1
"Arrogance and stupidity, all in the same package.....how
efficient of you!" - Ambassador Londo Mollari, Babylon 5


Re: Frequency coordination page

Bill Brown
 

I'll see if I can move the frequency off 147.455 if I can get a custom
oscillator...the cheap one from Digikey puts it right on 147.455...it's a
design I've been working on for a cheap 2m FM transmitter for balloons.

73s de Bill WB8ELK

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