Mobilefish.com
Author: Robert Lie

Determine Moxon antenna gain for elevation=90° and azimuth=180°, 
see LoRa/LoRaWAN tutorial 49.
See: https://www.mobilefish.com/developer/lorawan/lorawan_quickguide_tutorial.html

The ½λ dipole antenna used is the ½λ dipole antenna with less parts as explained in 
tutorial 41.

==========================================================================================
½λ dipole antenna measurements
==========================================================================================

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{
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      "timestamp": 3698248947,
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{
  "time": "2019-09-16T14:58:50.111002919Z",
  "frequency": 868.3,
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  "coding_rate": "4/5",
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{
  "time": "2019-09-16T15:01:04.478831901Z",
  "frequency": 868.5,
  "modulation": "LORA",
  "data_rate": "SF7BW125",
  "coding_rate": "4/5",
  "gateways": [
    {
      "gtw_id": "eui-aa555a0000088013",
      "timestamp": 3833703171,
      "time": "2019-09-16T15:01:01.278505Z",
      "channel": 2,
      "rssi": -119,
      "snr": -8.2,
      "rf_chain": 1
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}

{
  "time": "2019-09-16T15:02:10.537098022Z",
  "frequency": 867.3,
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  "data_rate": "SF7BW125",
  "coding_rate": "4/5",
  "gateways": [
    {
      "gtw_id": "eui-aa555a0000088013",
      "timestamp": 3899936771,
      "time": "2019-09-16T15:02:07.512128Z",
      "channel": 4,
      "rssi": -120,
      "snr": -6
    },
    {
      "gtw_id": "eui-b827ebfffec74b36",
      "timestamp": 70960299,
      "time": "",
      "channel": 4,
      "rssi": -27,
      "snr": 9.2,
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      "longitude": 4.8112044,
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{
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  "frequency": 867.5,
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  "gateways": [
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{
  "time": "2019-09-16T15:05:28.696216398Z",
  "frequency": 868.3,
  "modulation": "LORA",
  "data_rate": "SF7BW125",
  "coding_rate": "4/5",
  "gateways": [
    {
      "gtw_id": "eui-b827ebfffec74b36",
      "timestamp": 269126875,
      "time": "",
      "channel": 1,
      "rssi": -27,
      "snr": 9,
      "rf_chain": 1,
      "latitude": 52.451794,
      "longitude": 4.8112044,
      "altitude": 9,
      "location_source": "registry"
    }
  ]
}

{
  "time": "2019-09-16T15:06:36.086105978Z",
  "frequency": 867.7,
  "modulation": "LORA",
  "data_rate": "SF7BW125",
  "coding_rate": "4/5",
  "gateways": [
    {
      "gtw_id": "eui-b827ebfffec74b36",
      "timestamp": 336511532,
      "time": "",
      "channel": 6,
      "rssi": -29,
      "snr": 10,
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      "longitude": 4.8112044,
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}

{
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  "frequency": 868.5,
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  "data_rate": "SF7BW125",
  "coding_rate": "4/5",
  "gateways": [
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      "gtw_id": "eui-b827ebfffec74b36",
      "timestamp": 403145003,
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      "longitude": 4.8112044,
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{
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  "frequency": 867.9,
  "modulation": "LORA",
  "data_rate": "SF7BW125",
  "coding_rate": "4/5",
  "gateways": [
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      "gtw_id": "eui-b827ebfffec74b36",
      "timestamp": 470579732,
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}

{
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  "frequency": 868.1,
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  "data_rate": "SF7BW125",
  "coding_rate": "4/5",
  "gateways": [
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      "gtw_id": "eui-b827ebfffec74b36",
      "timestamp": 936337099,
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{
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  "frequency": 867.7,
  "modulation": "LORA",
  "data_rate": "SF7BW125",
  "coding_rate": "4/5",
  "gateways": [
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      "timestamp": 1003179116,
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}

{
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  "frequency": 868.3,
  "modulation": "LORA",
  "data_rate": "SF7BW125",
  "coding_rate": "4/5",
  "gateways": [
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      "timestamp": 1069323571,
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{
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  "frequency": 867.9,
  "modulation": "LORA",
  "data_rate": "SF7BW125",
  "coding_rate": "4/5",
  "gateways": [
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      "gtw_id": "eui-b827ebfffec74b36",
      "timestamp": 1135460796,
      "time": "",
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{
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  "frequency": 867.1,
  "modulation": "LORA",
  "data_rate": "SF7BW125",
  "coding_rate": "4/5",
  "gateways": [
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      "gtw_id": "eui-b827ebfffec74b36",
      "timestamp": 1268170363,
      "time": "",
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    }
  ]
}


==========================================================================================
Moxon antenna measurements 
==========================================================================================

{
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  "gateways": [
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{
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  "gateways": [
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      "timestamp": 2802715499,
      "time": "",
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      "snr": 10,
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  ]
}

{
  "time": "2019-09-16T13:25:39.56350786Z",
  "frequency": 868.3,
  "modulation": "LORA",
  "data_rate": "SF7BW125",
  "coding_rate": "4/5",
  "gateways": [
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      "gtw_id": "eui-b827ebfffec74b36",
      "timestamp": 2869935499,
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      "longitude": 4.8112044,
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      "location_source": "registry"
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}

{
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  "frequency": 867.5,
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  "gateways": [
    {
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      "timestamp": 2937073188,
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}

{
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  "frequency": 868.5,
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  "gateways": [
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{
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{
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  "frequency": 868.1,
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  "gateways": [
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{
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  "frequency": 867.9,
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{
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{
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  "frequency": 868.5,
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{
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{
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{
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{
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{
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