Date   
Re: GPSL transport and catering?

Mike Manes <manes@...>
 

Hi Paul,
Ok .... that's one large canadian bacon pizza, right? :={}
Mike

paul.verhage@... wrote:


For GPSL attendees: any dietary preferences or restrictions for lunch?
My only restrictions is that the food taste good and there be plenty
of it.
;)

Paul


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Re: CU SGC Workshop / GPSL 2003 Flight 14 June

Mike Manes <manes@...>
 

Hi Bill,

My apologies for any unintended snub regarding the title of the
workshop -- I think I generally refer to it as the CU SGG BalloonSat
Workshop, at least when introducing the event.

And as you may have learned, the 2003 Great Plains Super Launch (GPSL)
is being hosted by EOSS this year and will be held inconjunction with
the Workshop. GPSL attendees will be meeting all day Fri 13 June
at CU, courtesy Chris Koehler. We plan to meet for dinner at the
Souper Salad Thursday evening, any you and Chris are more than welcome
to join us - I think we can work out any last minute hitches then. And
you or another of the Mt State team is welcome to the GPSL conference as
well. See http://gpsl.eoss.org for all the details.

Regarding the APRS beaconing: EOSS has committed to provide FAA Denver
Center and DIA Tracon controllers with enroute position reports as per
last year. But since that time, some of our group have developed
a web-based APRS reporting system using findu.com processes. This
scheme provides FAA controllers with VOR radial and range with altitude
reports with 60-sec updates. We've used it on the last 3 EOSS flights,
and the FAA have taken a strong liking to it. And it saves us a bunch
of cell phome roaming fees as well. This system relies entirely upon
certain cooperating Denver-area ham stations to serve as gateways
(Igates) from the 70cm and 2m APRS beacon downlinks and into the
internet. So far, our Igates can receive only one 70cm freq and one
2m freq at a time.

Since last year, the FAA has become pretty antsy about balloons
intruding on DIA approach and departure corridors -- we're launching
just 35 NM from DIA. So even though all of the Workshop flights are
FAR-101 exempt, EOSS has a policy of letting the FAA know where we are
so they can keep their aeroplanes away from our valuable payload
strings :=}.

Thus for this flight of five balloons, we are
compelled to do some frequency reuse by means of time-slotting, i.e,
allocating each balloon its own 10-sec segment of each GPS UTC minute
in which it can xmit its APRS beacon without stepping on another.
For that purpose, EOSS has picked 445.975 MHz and 144.340 MHz, both of
which have been proven to be QRM-free during past flights. The 144.39
MHz APRS backbone would eventually get you gated into the internet,
provided you include IGATE in you path; but that freq is extremely
busy in the Denver area, even for terrestrial stations. We tried it
once during a flight, and our KPC-3's mind got blown ascending above
40K' and it stopped generating position reports. And any APRS
beacon hitting on 144.39 every 11 sec is sure to create consternation
amongst the Front Range APRS community.

In the event of an APRS failure, EOSS is prepared to manually track
the balloons and make cell phone reports.

Now, you are not the only balloon team that would like to downlink
more frequent reports. EOSS would like to as well. So what we have
done in those cases is to carry two APRS beacons on each balloon.
One operates on one of the shared freqs with 60-sec time slotted
time, lat/lon and altitude, while the busier downlink goes on a
separate freq. And it's not a bad idea to carry up a spare beacon -
it's saved EOSS's bacon many times in the past!

An easy, albeit costly, backup beacon can be built using a Kenwood
D-7 HT plus any GPS receiver that has NMEA $GPGGA serial output.
Or the cheap route is to get a Dyoincs TinyTrak 3 and a cheap HT
(Alinco DJ-C5 dual-bander is flight proven), plus the GPS; this does
require more sweat equity, however. Either one can yield a flight-
ready package that weighs under 1.7 lb with antenna and 48-hrs of
battery.

If neither of these alternatives is acceptable, then I'd propose that
you do you own thing and accept the responsibility for making you
own FAA reports. At launch and up thru FL230, call DIA Tracon Ops
at 303-342-1590; above that up thru FL600, call Denver Center Military
Desk at 303-651-4252. Let them know your cell phone number. Reverse
that process during descent, and call 'em both when you've landed.
These reports should include your flight ID (EOSS-67C, which will
have been filed on our HiBal Notice), altitude, time and VOR position
(3-letter VOR ID, mag radial and NM range) For this flight, suggest
you use the Falcon (FQF) VOR. The controller will advise you at
which altitude to make your next report. (They normally ask for
FL230, 350, 450 and 600 in ascent and dscent, but if we're close to
DIA, they may want more frequent reports). These reports should be
no more than 3 minutes old when you call 'em in.

For Merle K0YUK: can you let Bill know what fill tube diameter
to use with a 1200 gm Kaysam?



"W. A. Hiscock" wrote:


Mike:

Sorry for the delay, I finally have some answers for your questions. See
below.

And we should all refer to the workshop as the "Space Grant Workshop",
not the CU workshop, please.

Mike Manes wrote:


1. Parachute diameter or MSL terminal descent rate w/ 12# load.
Parachute diameter is 9 feet; terminal descent rate w/12# load is rated
at 15-20 fps.

2. Beacon weight in flight configuration. (this deducts from the
allowable balloonsat load)
Not counting the parachute (as I know EOSS does not), our beacon (we
call it the "command capsule") total weight is anticipated to be about
1800 g, or just under four pounds.

3. Beacon callsign and SSID (-11 preferred).
KD7MFJ-11

4. Which bands / freqs can you downlink on?
We usually downlink our APRS packets on 144.39, which is not so crowded
up here in MT.

Our preference would be to stay in the 2 m band. We also like to send
packets more often than 1/minute (we usually send at the max possible
rate, 11 sec. period with our equipment). It would be ideal for us to
have our APRS tracking on a 2-m frequency offset from the other balloons
so that we can utilize a high packet rate and not get involved in time
slotting (which we've never done -- I'm very leery about trying new
things, esp. with so many other folks on the airwaves).

5. Can your beacon transmissions be time-slotted to a particular second
after the top of each GPS minute? (Provides for freq sharing w/
other beacons).
We have no experience with this, and, as I said above, I'd rather not be
experimenting with new techniques when the emphasis is on a safe ride
for the workshop balloonsats.

Finally, a question for your regarding balloon fill plumbing: we've used
1500g Kaysams, but never a 1200 g. Is the nozzle diameter the same as
the 1500? We need to make sure we've got the right diameter pipe to do
the fill.

Looking forward to the GPSL,

Bill

P.S. I think Chris may have already mentioned this idea, but I think it
would be very valuable to have a dinner of all the team Flight Directors
(EOSS, TVNSP, ANSP, MT BOREALIS, plus Chris and myself representing the
SG workshop), possibly on Thursday, to do final coordination on plans
and frequencies, as we did last year. Saturday morning is just too
hectic.

*****************************************************************
William A. Hiscock (406)-994-6170
Professor of Physics (406)-994-4452 (FAX)
Director, Montana Space Grant Consortium hiscock@...
261A EPS Building KD7MFF
Montana State University
Bozeman, MT 59717-3840
http://www.physics.montana.edu/faculty/hiscock
*****************************************************************
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Mike Manes manes@... Tel: 303-979-4899
"Things should be made as simple as possible, but not more so." A.
Einstein

GPSL and 2m

Mark Conner <n9xtn@...>
 

Hi all,

I'm hoping to fly June 14th from the Omaha area, at the same time
the large group is flying in Colorado. Will anyone out there be
sending packet data on 2 meters? Perhaps one of the payloads
could transmit via NSTAR and we'd see if we could get it
digipeated this way. It wouldn't be a 2-way path, but at least
we'd get BBE out of the deal.

Also, if someone were doing crossband voice to 70cm out, we could
put our simplex repeater on the output and maybe pick that up
too.

73 de Mark N9XTN

Re: GPSL conference

Mike Manes <manes@...>
 

Hi Bill,

The "400 lb gorilla" in my 70cm ATV package is 0.6 lb of Li batts
to run it for 3 hrs. That 1W out/6W in (16%) power conversion
effiency gags me. I've seen power oscillators do better than 90%
at 1 MHz, and CU has developed ~80% 2.5 GHz RF sources for the old
microwave satellite solar power idea (shades of N. Tesla!). I figger
it's simple to FM a "semi-disciplined" uW power osc and run the whole
rig for a flight using one 85 gm 4 A-hr Li cell.

You have the 1300 slot on Friday. Thanks!

73 de Mike W5VSI

WB8ELK@... wrote:


I prefer after lunch for the talk.

Probably the easiest way to generate decent power for a balloon is to go with
the TVHAM.com solution....their 50 milliwatt transmitter along with their 1
watt amplifier module....$88 each. This is for 23cm band.....for 2.4 GHz they
have equipment as well...I like to use the micro and nano-wheels that Dave
Clingerman makes for these bands. I've run 1 watt on 2.4 GHZ FM ATV before from a
balloon and got P5 signals at 25 miles....but not sure just how much further
you can get....probably best to use 23 cm band for best range.

- Bill WB8ELK
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Mike Manes manes@... Tel: 303-979-4899
"Things should be made as simple as possible, but not more so." A.
Einstein

Re: GPSL Launches

Mike Manes <manes@...>
 

Hi Paul,

If you and whomever TVNSP comes along can track and recover >three<
balloons, then go for it. But CU and EOSS have agreed to support
only a max of five balloons for GPSL & the CU Workshop. To date,
those will be EOSS(1), ANSR(1), Mt St(1) and TVNSP (2). K.I.L.L!
The 6th balloon and gas are held in reserve for launch contingency
only.

73 de Mike W5VSI

paul.verhage@... wrote:


Mike, will it be alright for me tolaunch two stacks with you folks
providing the gas and balloon? How about if we can field
equipment for three stacks?

Paul


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Re: GPSL transport and catering?

paul.verhage@...
 

For GPSL attendees: any dietary preferences or restrictions for lunch?
My only restrictions is that the food taste good and there be plenty
of it.
;)

Paul

Re: GPSL A/V & i'net?

paul.verhage@...
 

How much assistance will you need to fill two ballons in time for
a mass launch at 0900? EOSS is having to grub a bit for balloon prep
crews. Maybe you could bend a few TVNSP arms to join you? More the
merrier.
I'm trying to get a few TVNSPers out this way. Dr. Hiscock and
the Montana Boys will help me with the filling and launching.

Which KD4STH SSIS's will you be using? We need these to get 'em set
up for the FAA VOR reports on wxqa.com.
I'll use KD4STH-11 and 9.

I'll work on the weight and get it down to 5 pounds each.

Paul

Re: GPSL Launches

paul.verhage@...
 

If you and whomever TVNSP comes along can track and recover >three<
balloons, then go for it. But CU and EOSS have agreed to support
only a max of five balloons for GPSL & the CU Workshop. To date,
those will be EOSS(1), ANSR(1), Mt St(1) and TVNSP (2). K.I.L.L!
The 6th balloon and gas are held in reserve for launch contingency
only.
Thansk for the info. I'll launch just two balloons.

Paul

Re: GPSL A/V & i'net?

Mike Manes <manes@...>
 

Hi Paul,

Yup! CU has some NASA Spacegrant budget to supply the GPSL teams
that can carry at least >7 lb< of >recovered< balloonsats with 1200 gm
latex bags and the He to fill 'em for ~ 1000 fpm for 12 lb.
They'll be supplied gratis by EOSS at the launch site.

So you should keep hacking away at your stacks to get 'em down to <5 lb,
including any backup beacons. Note that the EOSS team can do DFing
on a any backup beacon on 2m having at least 300 mW ERP (DJ-C1).
I've come up with a corrolary to K.I.S.S for ballooning: K.I.L.L:
"Keep It Light, Larry!", w/ apologies to Larry "Lawnchair" Walters,
may his soul Rest in Peace.... (or was that "Lunkhead"? ...)

The balloonsats use Onset Hobos to log data, so they don't use or need
downlinks. So provide yer own RF. But that makes recovery a must!

How much assistance will you need to fill two ballons in time for
a mass launch at 0900? EOSS is having to grub a bit for balloon prep
crews. Maybe you could bend a few TVNSP arms to join you? More the
merrier.

Which KD4STH SSIS's will you be using? We need these to get 'em set
up for the FAA VOR reports on wxqa.com.

73 de Mike W5VSI

VERHAP@... wrote:

Free balloons and gas?!
I was about to order two balloons. I'll launch one capsule with each
stack and keep the weight to 6 pounds. I'd like to fly a backup
beacon on a seperate capsule. I'll bring them in case there's some
extra weight.

Are the balloonsats sending telemetry? I could use those as a
backup beacon.

Paul


You can have the 0:30 and 0:40 time slots on 144.34, and your callsigns
will KD4STH-11 and -12. You'll be sharing that freq with the backup
EOSS APRS beacon (I've gotta test fly the APRSLite that crumped on
EOSS-66 to regain confidence in it).

I hope that the balloonsat kits come in closer to 500 than 700 gm,
especially if 25 teams show. This would pare the student load
back to 27.6 lb, leaving you and MT just 12.1 lb to split up. Then
you could fly some more goodies. We should be hearing more accurate
figures from CU by the end of May.

THanks, and look forward to a fun event next month!

73 de Mike W5VSI, EOSS

VERHAP@... wrote:

Hi Paul,

Thanks for the info. A few more questions:

1. Were you planning on flying all 3 beacons on your flight string?
If so, then could you put the TT3 w/ plain text hhmmss and alt format
on KPC-3 on 445.975 as KD4STH-11? Your time slot would be 20 sec after
the GPS minute. We will have an I-gate station committed to the GPSL
beacons on that freq.
I plan to launch two stacks. What time slots do you want for the
second stack?

2. How much do your beacons weigh, and which will you be flying?
We want to reserve as much weight budget under the 12 lb limit for
SpaceGrant balloonsats as possible.
I can probably keep each stack to 9 pounds. If you need more
available weight, I'll modify my experiments. I'll carry cameras on
each stack. If we can place the balloon sats below mine, I'll get
photos of the balloonsats.

3. If you wish, Jim K0JLZ has invited you to join him as navigator on
the T&R crew. Jim has both APRS and doppler DF in his SUV.
That sounds fine. Thanks.

4. Although 144.39 is a sure way to get yourself gated onto the I'net,
that freq is terribly crowded out here near Denver -- you may have a
hard time avoiding collisions. EOSS normally uses 144.34 or 147.555
for our 2m beacons. Our I-gate can also gate beacons from one of
those freqs.
I'll switch to 34 then.

Paul
--
Mike Manes manes@... Tel: 303-979-4899
"Things should be made as simple as possible, but not more so." A.
Einstein

--
Mike Manes manes@... Tel: 303-979-4899
"Things should be made as simple as possible, but not more so." A.
Einstein

Re: GPSL A/V & i'net?

Mike Manes <manes@...>
 

Hi Chris,

I assume the laptop also has uSoft PowerPoint loaded? If not, then
I can bring one that does, but not sure how to interface to your
projector -- safe to assume it has a SVGA cable supplied?

And I'll bring along the EOSS VCR and RCA cables for tapes.

Have you got a final meeting room for the GPSL conference assigned?
If so, could you provide directions / map?

BTW, http://gpsl.eoss.org has Rick's fine stuff on the GSPL event/

73 de Mike W5VSI

Thanks!

73 de Mike W5VSI

Chris Koehler wrote:


Mike,

I have been on vacation, sorry for the delay on my responses.

We can get you a LCD projector, screen, and one laptop that has a DVD
player but I don't have a VCR. I will be checking the room next week to
make sure but I don't think it has a VCR. You will have to bring one to
hook up to the projector.

Chris Koehler
Deputy Director
Colorado Space Grant Consortium
University of Colorado at Boulder
303-492-4750
spacegrant.colorado.edu

-----Original Message-----
From: Mike Manes [mailto:manes@...]
Sent: Monday, May 19, 2003 11:57 AM
To: Mike Gray KD7LMO - ANSR; Paul Verhage KD4STH
Cc: GPSL@...; Ralph Wallio, W0RPK; Chris Koehler - CU Space
Grant
Subject: Re: [GPSL] GPSL A/V & i'net?

Hi Mike,
VHS playback and video display (usually projection) have been in
every classroom I've worked in at CU Eng'g. Not sure about DVD
or S-video. I'll wait for Chris's response re Ralph's query
re SVGA interface.

BTW Mike, Jack said he thought your flight computer payload could
downlink APRS beacons as KD7LMO-11 on 445.975 MHz, time slotted at
10 sec after the top of each GPS minute. 'Zat so?

For Paul: Still need the TVNSP APRS beacon capabilities re time
slotting, carrier detect, callsign, freqs.

73 de Mike

mgray@... wrote:

What about video playback devices (VHS tape or DVD)?

Is there an S-video input available if we bring our own VCR or DVD
player?

Michael Gray
ANSR

On Mon, 19 May 2003, Mike Manes wrote:

Chris, could you respond to Ralph's inquiry? I think the video
projector is a given, but not sure how it interfaces to a 3rd party
laptop. And I assume that the video projector can show VHS tapes as
well as SVGA? - Mike

"Ralph Wallio, W0RPK" wrote:

Mike,

Is it reasonable to assume that we will have A/V support on
Friday, e.g., a
PC e/w high speed internet connection and a video projector?

TNX Ralph W0RPK
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Einstein
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Einstein

Re: GPSL transport and catering?

Mike Manes <manes@...>
 

Thanks Chris,

For Ralph: It looks like a under a one mile hike to the GPSL site,
but I suspect that rides will be available if you need one. The
big kink is pricey and rare on-campus parking.

For Bernadette Garcia: What do you show for box lunches @ about $5 per
person delivered to the Eng'g bldg on Fri 13 June? How about AM coffee
/ juice & bagels / donuts?

For GPSL attendees: any dietary preferences or restrictions for lunch?

73 de Mike W5VSI

Chris Koehler wrote:


There is no shuttle service from the hotel. The old fashioned shuttle
is the only thing available (by foot).

There are many good caterers but the prices range all over the place.
Contact Bernadette Garcia (cc in this message for more details)

Chris Koehler
Deputy Director
Colorado Space Grant Consortium
University of Colorado at Boulder
303-492-4750
spacegrant.colorado.edu
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Mike Manes manes@... Tel: 303-979-4899
"Things should be made as simple as possible, but not more so." A.
Einstein

Re: National Geographics, Jan 1963

Mike Manes <manes@...>
 

Hi Bill,

Thanks for pitching GPSL at Dayton - guess we'll find out if there
were any takers, eh? And I have you slotted for 1 hr at GPSL - hope
that'll be enough time. We have 4 1 hr slots - 2 AM and 2 after
lunch. Any preference?

There's been a lot of chatter and pondering about going to WBFM ATV
on 1.2 or 2.4 GHz lately. I think WBFM would present a less severe
QRM problem for other stuff on the payload string (the KPA-5 wiped
out GPS lock on the EOSS-66 / UK Big Blue glider). And I think I
might be able to get better than 50% dc->rf power conversion on 1.2 GHz
using a modulated PP power osc. Your thoughts would be welcome.

73 de Mike W5VSI

wb8elk@... wrote:


Hi Paul,

I found a lot of Geographics in the garage and barn, but couldn't find the
early sixties, sad to say.

Hope you find another source.

- Bill WB8ELK

BTW, I gave a talk about GPSL2002 at the Dayton Hamvention ATV forum and also
at the ATV dinner on Friday night.....everyone loved the Mr. Potato Head in
Jail photos. I gave out info on GPSL2003 so hopefully some folks will be
interested.


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Re: GPSL A/V & i'net?

paul.verhage@...
 

For Paul Verhage: can your beacon operate on 445.975? And I need your
beacon weight(s) and 'chute properties.
It can. Both of my stacks will weigh around 9-10 pounds each.
That includes beacon.

My chutes will descend at around 1000-1200 feet per minute. I'm
using a 5' diameter chute on one stack and a new 7' chute on the
second.

Paul

GPSL Launches

paul.verhage@...
 

Mike, will it be alright for me tolaunch two stacks with you folks
providing the gas and balloon? How about if we can field
equipment for three stacks?

Paul

Re: Transport in Boulder

Mike Manes <manes@...>
 

Hi Ralph,

Sorry to hear about the scotched plans to visit old friends out
thisaway.
But thanks for hanging in for GPSL! I know there are folks who will
enjoy meeting you for the first time.

I've not yet got my head around where I'll spend Fri nite. My QTH
is a bit closer to Deer Trail than Boulder is, and I'll need to get
the >>ElectroVan<< fully loaded as well. So may not even be able to
make the Fri PM Banquet. I might even consider getting a room in
Byers (10 mi W of Deer Trail) that night to get on site for setup
at 0600. But I'm sure that you'll find transport, either with GPSL
folks or a van from the Ramada. I'll check the latter availability.

73 de Mike W5VSI

"Ralph Wallio, W0RPK" wrote:


Mike,

Thanks for your offer which will probably help. Bill Brown may also be
staying in the Ramada Inn and there might be others. I could be ready to go
substantially earlier than for our 10am schedule so anything will work.

It occurs to me that there will be Space Grant attendees needing a ride.
Perhaps they will have a van going back and forth a few times, maybe a
Ramada Inn courtesy van. I will call them and pass on what they tell me.

We had planned on several days of family vacation in the area before
arriving in Boulder on Thursday afternoon. However, several realities
raised their ugly heads and our vacation had to be cancelled. I will be
able to leave home Wednesday afternoon but have to be back mid-day on
Sunday.

It is not reasonable for me to make the long driving trip by myself.
Daughter Stephanie is making my participation possible by coming along for
the ride. She has a close friend who is working in Englewood for a few
months on assignment. They will be together on Friday while we are at CU
and then Steph and I will be at Deer Trail on Saturday morning on our way
back east to her home in Lawrence.

Thanks for GPSL2003!

- Ralph W0RPK
--
Mike Manes manes@... Tel: 303-979-4899
"Things should be made as simple as possible, but not more so." A.
Einstein

Re: GPSL A/V & i'net?

Mike Manes <manes@...>
 

Hi Mike,

I failed to mention payload flight line to support up to 8 balloonsats.
They're fitted with vertical thru tubes to pass at least a 3/32" OD
line (we use Technical Textiles dacron for this), and will be spaced
at spaced about every 12" down the line and separated by a half-hitch
on a bight. EOSS can supply this if you can't. You will need a
bowline at the bottom of your flight line to tie the balloonsat string
to, however.

OK on the 4 @ Li D-cells. I assume that you use the 1.32" OD x 2.3" H
cells from surplus BA-5513/U packs? Trade ya for a dc-dc converter?

Re the APRS downlink freqs: EOSS has taken the responsibility for
notifying the FAA (Denver Center and DIA Tracon) of what could be up
to five separate balloon positions in flight. This is part of long-
standing agreement that allows us to operate in one of heaviest-
trafficked air corridors in the US. During the past 3 EOSS flights,
the local FAA controllers have taken a strong liking to the 60-sec
VOR and altitude updates provided via www.wxqa.com, and they will
expect the same during GPSL.

445.975 MHz has been designated as the time-slotted APRS downlink freq
for what could be up to five separate balloon tracking beacons. This
freq has been shown to be free of QRM in the Denver area, and it's the
one that our Igate stations will be tuned to on 70 cm. So in order to
accomodate 60-sec APRS updates from five separate beacons, we will
have to time slot at :00, :10, :20, :30 and :40 after the GPS minute.
So as you can see, this freq can't support much more than just those
beacons, and certainly not 8 slots from just one balloon. At least
some of these beacons are "deaf", so conventional CD collision
avoidance will not be operative.

I'd propose that you put your micro-beacon, time slotted at 0:10 on
445.975, and your flight computer downlink on a separate freq -- say
446.025. This will provide your rapid-update and still leave room
for your cross-band repeater downlink on 445.525.

In the interest of conserving weight, and in view of the fact that
the EOSS crossband uplink is rockbound on 445.975 (which is how we
know it's a clear freq!), I don't plan on flying that module during
GPSL. I do plan on flying the EOSS APRS module and APRSLite (2.3 &
1.7 lb) on the EOSS string; the 445.975 bcn will be slotted at 0:00,
and the other will be on 144.34. This leaves 8.0 lb for balloonsats.
Weight budget permitting, I'll add the 1.1 lb DF/cutter on 145.600.

For Bill Hiscock: still need your beacon and 'chute properties and
weights.

For Paul Verhage: can your beacon operate on 445.975? And I need your
beacon weight(s) and 'chute properties.

73 de Mike W5VSI

mgray@... wrote:


Thanks for the info on the AV equipment. I'll be sure to bring a VHS tape
as well.

Here is the information on the equipment we will bring.

Should we bring our own Lithium batteries or will you have some available?
I need 1 (one) for the Beacon and 3 (three) for the cross band repeater.
If we need to bring them, I'll have to ship them via UPS ground ahead of
time. The airlines won't let you fly with them and I'm not going to take
a chance if one of them decided to "vent" during the flight.

1. 1400'/min descent at 5000' MSL with "heavy" 12 pound load

2. Cross Band Repeater (3 pounds), Redundant Beacon (1 pound),
cutdown/antennas (0.5 pounds), 7.5 pounds for student payload

3. KD7LMO-11

4. APRS on 445.950 MHz

Cross Band Repeater uplink 145.560MHz / PL 162.2
downlink 445.525 MHz

5. 445.950 MHz time slotted as follows in GPS seconds:

00, 30 Micro Beacon

10, 20, 40, 50 Cross Band repater when repeater not keyed up

15, 45 Landing prediction based on in-flight wind data collection
(After burst. SSID set to -0)

Lots of packets, but tracking and recovery likes to know where
everything is.

The cross band repeater is open for anyone to use for tracking and
recovery or general contact. It can also be set to link with the EOSS
cross band repeater in flight. So we will finally get our EBBE link.

73s de Michael Gray, ANSR, KD7LMO
--
Mike Manes manes@... Tel: 303-979-4899
"Things should be made as simple as possible, but not more so." A.
Einstein

Re: National Geographics, Jan 1963

Bill Brown
 

Hi Paul,

I found a lot of Geographics in the garage and barn, but couldn't find the
early sixties, sad to say.

Hope you find another source.

- Bill WB8ELK

BTW, I gave a talk about GPSL2002 at the Dayton Hamvention ATV forum and also
at the ATV dinner on Friday night.....everyone loved the Mr. Potato Head in
Jail photos. I gave out info on GPSL2003 so hopefully some folks will be
interested.

Re: GPSL A/V & i'net?

Mike Manes <manes@...>
 

Oh, one other question: I'm scheduling the speakers for the GPSL
conference Fri 13 Jun, and recall that you have a presentation to
give. You'd be joined by Bill Brown, Ralph Wallio, Mike Grey and
myself (+ perhaps 1 more EOSS presentation). Do you have a preferred
time? The program schedule is shaping up as:

Thurs 12 June
1900 - Group dinner for early arrival at Souper Salad, Boulder

Fri 13 June
0900 - Open room, set up displays and greet attendees
1000 - 1st speaker
1100 - 2nd spkr
1200 - Lunch (I'm looking into on-site catering)
1300 - 3rd spkr
1400 - 4th spkr
1500 - Final plans, forecasts Q&A for GPSL flight Sat 14th.
1600 - Adjourn
1700 - GPSL Banquet at Turley's Restaurant
1900 - EOSS preflight net on 147.225 / 145.46 rptr (107.3 PL)
this is 1 hr earlier than normal due to 1.5 hr AM drive

Sat 14 Jun
0530 - Depart Boulder for Deer Trail (I-70 50 mi E of Denver)
0700 - Arrive Deer Trail High School launch site
0900 - Launch 4-5 ballons w/ balloonsats
1115 - Tally-hos begin.
1300(?) - Meet at Marty's favorite greasy spoon (TBD depending
on landing sites) for lunch and recap.

73 de Mike W5VSI


VERHAP@... wrote:


For Paul: Still need the TVNSP APRS beacon capabilities re time
slotting, carrier detect, callsign, freqs.
I'm using a TT2 and TT3, along with a KPC3+ They should all be
time slotted. The callsigns are KD4STH-9,10, and 11. There's no
carrier detect. I'll use 144.390

Paul
--
Mike Manes manes@... Tel: 303-979-4899
"Things should be made as simple as possible, but not more so." A.
Einstein

Re: GPSL A/V & i'net?

mgray@...
 

Thanks for the info on the AV equipment. I'll be sure to bring a VHS tape
as well.

Here is the information on the equipment we will bring.

Should we bring our own Lithium batteries or will you have some available?
I need 1 (one) for the Beacon and 3 (three) for the cross band repeater.
If we need to bring them, I'll have to ship them via UPS ground ahead of
time. The airlines won't let you fly with them and I'm not going to take
a chance if one of them decided to "vent" during the flight.

1. 1400'/min descent at 5000' MSL with "heavy" 12 pound load

2. Cross Band Repeater (3 pounds), Redundant Beacon (1 pound),
cutdown/antennas (0.5 pounds), 7.5 pounds for student payload

3. KD7LMO-11

4. APRS on 445.950 MHz

Cross Band Repeater uplink 145.560MHz / PL 162.2
downlink 445.525 MHz

5. 445.950 MHz time slotted as follows in GPS seconds:

00, 30 Micro Beacon

10, 20, 40, 50 Cross Band repater when repeater not keyed up

15, 45 Landing prediction based on in-flight wind data collection
(After burst. SSID set to -0)

Lots of packets, but tracking and recovery likes to know where
everything is.

The cross band repeater is open for anyone to use for tracking and
recovery or general contact. It can also be set to link with the EOSS
cross band repeater in flight. So we will finally get our EBBE link.

73s de Michael Gray, ANSR, KD7LMO

On Mon, 19 May 2003, Mike Manes wrote:

Hi Mike,
VHS playback and video display (usually projection) have been in
every classroom I've worked in at CU Eng'g. Not sure about DVD
or S-video. I'll wait for Chris's response re Ralph's query
re SVGA interface.

BTW Mike, Jack said he thought your flight computer payload could
downlink APRS beacons as KD7LMO-11 on 445.975 MHz, time slotted at
10 sec after the top of each GPS minute. 'Zat so?

For Paul: Still need the TVNSP APRS beacon capabilities re time
slotting, carrier detect, callsign, freqs.

73 de Mike

mgray@... wrote:

What about video playback devices (VHS tape or DVD)?

Is there an S-video input available if we bring our own VCR or DVD
player?

Michael Gray
ANSR

On Mon, 19 May 2003, Mike Manes wrote:

Chris, could you respond to Ralph's inquiry? I think the video
projector is a given, but not sure how it interfaces to a 3rd party
laptop. And I assume that the video projector can show VHS tapes as
well as SVGA? - Mike

"Ralph Wallio, W0RPK" wrote:

Mike,

Is it reasonable to assume that we will have A/V support on Friday, e.g., a
PC e/w high speed internet connection and a video projector?

TNX Ralph W0RPK

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Re: GPSL A/V & i'net?

Mike Manes <manes@...>
 

Hi Paul,

Thanks for the info. A few more questions:

1. Were you planning on flying all 3 beacons on your flight string?
If so, then could you put the TT3 w/ plain text hhmmss and alt format
on KPC-3 on 445.975 as KD4STH-11? Your time slot would be 20 sec after
the GPS minute. We will have an I-gate station committed to the GPSL
beacons on that freq.

2. How much do your beacons weigh, and which will you be flying?
We want to reserve as much weight budget under the 12 lb limit for
SpaceGrant balloonsats as possible.

3. If you wish, Jim K0JLZ has invited you to join him as navigator on
the T&R crew. Jim has both APRS and doppler DF in his SUV.

4. Although 144.39 is a sure way to get yourself gated onto the I'net,
that freq is terribly crowded out here near Denver -- you may have a
hard time avoiding collisions. EOSS normally uses 144.34 or 147.555
for our 2m beacons. Our I-gate can also gate beacons from one of
those freqs.

73 de Mike W5VSI

VERHAP@... wrote:


For Paul: Still need the TVNSP APRS beacon capabilities re time
slotting, carrier detect, callsign, freqs.
I'm using a TT2 and TT3, along with a KPC3+ They should all be
time slotted. The callsigns are KD4STH-9,10, and 11. There's no
carrier detect. I'll use 144.390

Paul
--
Mike Manes manes@... Tel: 303-979-4899
"Things should be made as simple as possible, but not more so." A.
Einstein