For a brief while I was able to talk to the telemetrum, and
unsuccesfully tried to fire the charges (what voltage is supposed to
come across those terminals - I tried a couple of small LED's in
place, 12v ones, but they didn't light up - too high a voltage
Anyway, after that, I was trying to see if I could Monitor Idle Mode
etc, and I started getting "Connecting... Call Sign etc", but it just
hangs. I've rebooted everything but my computer to no avail! I get 3
beeps a delay then 2 beeps and 2 short beeps (I think - my ability to
count short sounds is poor). The altimeter is lying down.
Just an FYI to those of you following our progress on unreleased
products. Keith and I just renamed 'MegaMetrum' to 'TeleMega'. This is
more consistent with the naming of our existing products and other
things we're working on.
I just downloaded the zip file, extracted it. But when I click on it, I get
"AltisUI" is damaged and can't be opened. You should move it to the Trash.
Any ideas? I examined the package contents and I see the various Jars etc
Decimal degrees, seems to work!
LUNAR "Snow Ranch" 37.949198, -120.795944
LUNAR "Moffett Field" 37.412582, -122.052290
How long does the "cache" last for? Is it just effectively "forever",
except it won't be updated, or does it get purged at some point (eg
10MB exceeded, LRU?)
Thanks so much!
do not route the wires from the battery directly over the GPS antenna.
It's an RF thing...
We re-arranged the Telemetrum between now and the time things last
worked in order to get a straighter antenna run.
With a slight displacement of the battery wires, we got absolutely solid
GPS lock now and are back to our state of great happiness with our
Thanks again, Keith!
-The Falls Church HS SLI team
What's you airframe made from, could it be radio opaque? Did it work at home?
-------- Original message --------
From: "Dan Moses (Home)" <r90s(a)verizon.net>
Subject: [altusmetrum] Soliciting GPS Troubleshooting Tios
In preparation for the NASA SLI launch this Saturday, I had the team turn on their TeleMetrum to simulate the up to 1 hour hold time on the pad. It has been months since the altimeter has been even turned on. In general, we could not get any GpS satellites (0). We left the unit on for the hour and the monitor indicated 3 sats had been found, but no lock (none expected, of course). We took the altimeter for a walk around the neighborhood in the hopes of avoiding shadowing, but with no improvement. We will try again today in case the local ionosphere LOS was particularly strange yesterday, but that is really grasping at straws. Can someone point us in the right direction to troubleshoot the problem?
Dan and the FCHS SLI Team
Somewhere in the saddle on the way to AL
I have two windows laptops, on the older one, I can connect directly to the
Telemetrum and to the TeleDongle with no problems. On the new laptop, I can't
get the computer to recognize that I've plugged into the Telemetrum. I switch
the Telemetrum on, allow the Telemetrum to go through its startup sequence,
then I plug it into the USB, and I get the "da-da" sound from the computer
signifiying it doesn't recognize the device. If I then try to select
"Configure Altimeter" from ALTOS, no devices are listed.
The new computer has Java jre6, as does the old computer. Both computers are
running ALTOS Rev 1.1.
Can you point me in the right direction for troubleshooting? I'd really
like to get the new laptop working, as the battery life is about 5X that of
the old laptop.
I was hoping to get the TM into a 2.6" diam x 5" long AV bay (the Madcow
one) - however my forward and rear payloads are already pretty crowded with
linen, and I'd rather not have a dangling wire in there that could be
So - How much signal loss if that wire is just curved to fit the AV bay ?
It'll be inside 2 layers of fibreglass, (not CF) obviously?
Has anyone flown with it dangling outside through a static pressure port?
Should I consider some kind of compromise - like 2" of the 7" whip antenna
outside, epoxied in place to the bulkhead, with the bulk of it inside the
bay, connected by an SMA-SMA coax?
Has anyone gotten a good solution for this?