Dear John,
The definitions for the 5 APRS telemetry chanels are as follows:
1.) Vbat = Battery Voltage in Volts. I hope you have used a lithium AA
battery (not AAA) The Pecan Femto tracker should work down to 1.2 V at least
2.) SiTemp = Temperature measured in the Si4063 transmitter chip in
degrees Celsius (sorry forgot to change)
3.) ucTemp = Temperature measured in the micro controller chip in
degrees Celsius (sorry forgot to change)
4.) TTFF = Time to first fix. How long does it take until the GPS
receiver gets a (3D) position lock in seconds.
5.) Sats = Number of GPS satellites that were received to get the
position lock.
The equations can be seen on the APRS.fi Telemetry page:
https://aprs.fi/telemetry/?call=W5ACM-10&date_start=2019-03-23+14%3A00%3A00
Congrats on the launch and Hamfest from Berlin!
73
Thomas
DL4MDW / KT5TK
On 3/24/19 22:48, john Parmalee via BVARC wrote:
It looks like 51 want's to visit a couple more states before it goes
over the pond.
Now in South Carolina.
Weather looks clear ahead with a forecast of a wind direction of ENE
75 degrees.
Maybe it is going to take the great circle route to Europe.
Andy please explain a couple of the telemetry graphs.
Vbat in volts , got it. That little AAA battery is doing it's thing
SI temp and Uc temp, in degree C; they track close but not exact, what
are they?
TTFF in seconds ??
Channel 5 doesn't seem to have a value or name.
I know I can change the value designators.
John Parmalee
[email protected] <mailto:[email protected]>
281-380-3811
K5VGM WI2XLJ
In a message dated 3/24/2019 11:37:35 AM Central Standard Time,
[email protected] writes:
BLT-51 (W5ACM-10) is headed for the Georgia Coast!
Andy W5ACM
*From:* [email protected] [mailto:[email protected]] *On Behalf Of *Andy
*Sent:* Saturday, March 23, 2019 11:46 PM
*To:* [email protected]
*Cc:* 'BRAZOS VALLEY AMATEUR RADIO CLUB' <[email protected]>;
[email protected]; [email protected] <mailto:[email protected]>
*Subject:* Re: [BLT] [Ham-Radio-Tech-Notes] BLT-51
We have crossed into Alabama!
Andy W5ACM
Tracking W5ACM-10
*From:* [email protected]
<mailto:[email protected]>
[mailto:[email protected]] *On Behalf Of *Walter
Holmes K5WH
*Sent:* Saturday, March 23, 2019 9:51 PM
*To:* [email protected]
<mailto:[email protected]>
*Subject:* [Ham-Radio-Tech-Notes] BLT-51
The floater balloon from this morning is still clipping across the
country.
https://aprs.fi/#!call=a%2FW5ACM-10&timerange=43200&tail=43200
<https://aprsfi/#!call=a%2FW5ACM-10&timerange=43200&tail=43200>
Walter/K5WH
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