Bus Shelter Install Notes
=========================
DHD20160308

LoRa range-test run.

Installation crew: Damon HD & Deniz E.

Observations before starting:

 a) c2a1 battery (LoRa node 22) battery voltage (NiMH 2xAA) 2.65V after 1 week,
    QM1 disabled (no power), mobdet not installed.

 b) b9f9 battery (LoRa node 04) battery voltage (alkaline 2xAA) 2.45V after 1W,
    QM1 enabled (and powered), mobdet not installed.

 c) SF11 / data rate 1 should allow one full-size frame every ~140s,
    so we will try that, and a mix of adaptive and non-adaptive.

Sensors:

 1) node 24 in Curtain Rod flag (timetable R).

 2) & 3) 21&23 TXing from "Hoxton 7" (Garden Walk).

Using OpenTRV GFSK managed ~200m+ line of sight, and 100m through buuldings.
(1dBm / ~1mW nominal TX power.)
Turning up power to max (~25mW) makes little difference to range,
so interference may be more of an issue than raw range.

Also TXed back from Curtain Road flag to Jones Family ~20% success rate.
(This is far as LoRa has reached at power 1, 14dBm maybe 25mW.)
Some corrupted frame (structurally correct, ID correct, final trailer byte OK)
fail auth, so a flipped bit in the middle?

See end of transcript below.

>
?RX auth 9F 9C
{"@":"9F9C8BB2A0E2E2AF","+":13,"T|C16":153,"O":1,"vac|h":0}
{"@":"9F9C8BB2A0E2E2AF","+":14,"vC|%":40,"L":254,"v|%":40}
{"@":"9F9C8BB2A0E2E2AF","+":14,"T|C16":159,"O":1,"vac|h":0}
{"@":"9F9C8BB2A0E2E2AF","+":15,"L":252,"v|%":20,"tT|C":14}
{"@":"9F9C8BB2A0E2E2AF","+":0,"tS|C":0,"vC|%":20}
{"@":"9F9C8BB2A0E2E2AF","+":1,"T|C16":159,"O":1,"vac|h":0}
{"@":"9F9C8BB2A0E2E2AF","+":2,"vC|%":40,"L":253,"v|%":40}
{"@":"9F9C8BB2A0E2E2AF","+":13,"T|C16":161,"O":1,"vac|h":0}
{"@":"9F9C8BB2A0E2E2AF","+":14,"L":252,"v|%":20,"tT|C":14}
{"@":"9F9C8BB2A0E2E2AF","+":15,"tS|C":0,"vC|%":20}
?RX auth 9F 9C
=F@10C5;X0;T3 56 W255 0 F255 0 W12 0 F14 6;S 6 18 e;C1

>
?RX auth 9F 9C
?RX auth 9F 9C
?RX auth 9F 9C
{"@":"9F9C8BB2A0E2E2AF","+":7,"T|C16":162,"O":1,"vac|h":0}
?RX auth 9F 9C
{"@":"9F9C8BB2A0E2E2AF","+":14,"L":254,"v|%":20,"tT|C":14}
?RX auth 9F 9C

>

>

>E
=F@10C3;X0;T4 0 W255 0 F255 0 W12 0 F14 6;S 6 18 e;C1
?RX auth 9F 9C